./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 20e4a1f568783894f17840aa5f338f3fb65a6686c2b0eb1bb7dec08049ab8d00 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 03:21:15,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 03:21:15,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 03:21:15,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 03:21:15,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 03:21:15,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 03:21:15,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 03:21:15,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 03:21:15,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 03:21:15,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 03:21:15,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 03:21:15,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 03:21:15,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 03:21:15,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 03:21:15,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 03:21:15,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 03:21:15,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 03:21:15,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 03:21:15,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 03:21:15,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 03:21:15,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 03:21:15,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 03:21:15,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 03:21:15,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 03:21:15,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 03:21:15,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 03:21:15,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 03:21:15,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 03:21:15,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 03:21:15,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 03:21:15,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 03:21:15,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 03:21:15,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 03:21:15,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 03:21:15,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 03:21:15,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 03:21:15,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 03:21:15,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 03:21:15,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 03:21:15,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 03:21:15,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 03:21:15,313 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 03:21:15,337 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 03:21:15,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 03:21:15,338 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 03:21:15,338 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 03:21:15,339 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 03:21:15,339 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 03:21:15,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 03:21:15,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 03:21:15,344 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 03:21:15,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 03:21:15,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 03:21:15,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 03:21:15,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 03:21:15,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 03:21:15,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 03:21:15,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 03:21:15,345 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 03:21:15,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 03:21:15,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 03:21:15,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 03:21:15,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 03:21:15,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 03:21:15,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 03:21:15,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 03:21:15,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 03:21:15,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 03:21:15,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 03:21:15,347 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 03:21:15,347 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 03:21:15,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 03:21:15,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 03:21:15,347 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20e4a1f568783894f17840aa5f338f3fb65a6686c2b0eb1bb7dec08049ab8d00 [2021-11-17 03:21:15,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 03:21:15,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 03:21:15,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 03:21:15,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 03:21:15,520 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 03:21:15,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2021-11-17 03:21:15,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccf3c40d6/37bb527080e94e5d998ffaf926d5d50e/FLAGd905f75e8 [2021-11-17 03:21:16,177 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 03:21:16,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2021-11-17 03:21:16,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccf3c40d6/37bb527080e94e5d998ffaf926d5d50e/FLAGd905f75e8 [2021-11-17 03:21:16,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccf3c40d6/37bb527080e94e5d998ffaf926d5d50e [2021-11-17 03:21:16,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 03:21:16,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 03:21:16,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 03:21:16,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 03:21:16,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 03:21:16,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:21:16" (1/1) ... [2021-11-17 03:21:16,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b902e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:21:16, skipping insertion in model container [2021-11-17 03:21:16,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:21:16" (1/1) ... [2021-11-17 03:21:16,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 03:21:16,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 03:21:17,403 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i[175998,176011] [2021-11-17 03:21:17,456 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 03:21:17,495 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 03:21:17,687 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i[175998,176011] [2021-11-17 03:21:17,697 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 03:21:17,810 INFO L208 MainTranslator]: Completed translation [2021-11-17 03:21:17,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:21:17 WrapperNode [2021-11-17 03:21:17,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 03:21:17,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 03:21:17,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 03:21:17,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 03:21:17,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:21:17" (1/1) ... [2021-11-17 03:21:17,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:21:17" (1/1) ... [2021-11-17 03:21:17,962 INFO L137 Inliner]: procedures = 199, calls = 2183, calls flagged for inlining = 73, calls inlined = 51, statements flattened = 3123 [2021-11-17 03:21:17,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 03:21:17,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 03:21:17,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 03:21:17,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 03:21:17,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:21:17" (1/1) ... [2021-11-17 03:21:17,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:21:17" (1/1) ... [2021-11-17 03:21:17,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:21:17" (1/1) ... [2021-11-17 03:21:17,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:21:17" (1/1) ... [2021-11-17 03:21:18,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:21:17" (1/1) ... [2021-11-17 03:21:18,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:21:17" (1/1) ... [2021-11-17 03:21:18,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:21:17" (1/1) ... [2021-11-17 03:21:18,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 03:21:18,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 03:21:18,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 03:21:18,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 03:21:18,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:21:17" (1/1) ... [2021-11-17 03:21:18,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 03:21:18,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 03:21:18,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-17 03:21:18,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-17 03:21:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-17 03:21:18,168 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-17 03:21:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2021-11-17 03:21:18,168 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2021-11-17 03:21:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-17 03:21:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 03:21:18,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 03:21:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-17 03:21:18,169 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-17 03:21:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-17 03:21:18,169 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-17 03:21:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 03:21:18,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 03:21:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru_data [2021-11-17 03:21:18,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru_data [2021-11-17 03:21:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-17 03:21:18,170 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-17 03:21:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 03:21:18,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 03:21:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-11-17 03:21:18,170 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-11-17 03:21:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-17 03:21:18,171 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-17 03:21:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_resume [2021-11-17 03:21:18,171 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_resume [2021-11-17 03:21:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-17 03:21:18,171 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-17 03:21:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 03:21:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 03:21:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-17 03:21:18,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-17 03:21:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 03:21:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 03:21:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru_data [2021-11-17 03:21:18,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru_data [2021-11-17 03:21:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-17 03:21:18,172 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-17 03:21:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_send_address [2021-11-17 03:21:18,173 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_send_address [2021-11-17 03:21:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-11-17 03:21:18,173 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-11-17 03:21:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 03:21:18,173 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_wait [2021-11-17 03:21:18,174 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_wait [2021-11-17 03:21:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_remove [2021-11-17 03:21:18,174 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_remove [2021-11-17 03:21:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 03:21:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 03:21:18,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 03:21:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-17 03:21:18,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-17 03:21:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 03:21:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2021-11-17 03:21:18,175 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2021-11-17 03:21:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 03:21:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_write [2021-11-17 03:21:18,176 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_write [2021-11-17 03:21:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 03:21:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_ready [2021-11-17 03:21:18,177 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_ready [2021-11-17 03:21:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-17 03:21:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_suspend [2021-11-17 03:21:18,177 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_suspend [2021-11-17 03:21:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_read [2021-11-17 03:21:18,177 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_read [2021-11-17 03:21:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_probe [2021-11-17 03:21:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_probe [2021-11-17 03:21:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-17 03:21:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-17 03:21:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-11-17 03:21:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-11-17 03:21:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 03:21:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-11-17 03:21:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-11-17 03:21:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 03:21:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 03:21:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-17 03:21:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-17 03:21:18,522 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 03:21:18,523 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 03:21:26,708 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 03:21:29,510 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 03:21:29,524 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 03:21:29,524 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-17 03:21:29,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:21:29 BoogieIcfgContainer [2021-11-17 03:21:29,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 03:21:29,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 03:21:29,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 03:21:29,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 03:21:29,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:21:16" (1/3) ... [2021-11-17 03:21:29,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a01564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:21:29, skipping insertion in model container [2021-11-17 03:21:29,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:21:17" (2/3) ... [2021-11-17 03:21:29,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a01564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:21:29, skipping insertion in model container [2021-11-17 03:21:29,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:21:29" (3/3) ... [2021-11-17 03:21:29,533 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2021-11-17 03:21:29,537 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 03:21:29,537 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 03:21:29,579 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 03:21:29,585 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-17 03:21:29,585 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 03:21:29,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 751 states, 578 states have (on average 1.4792387543252594) internal successors, (855), 592 states have internal predecessors, (855), 140 states have call successors, (140), 32 states have call predecessors, (140), 31 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) [2021-11-17 03:21:29,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-17 03:21:29,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:21:29,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:21:29,624 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:21:29,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:21:29,628 INFO L85 PathProgramCache]: Analyzing trace with hash 392482652, now seen corresponding path program 1 times [2021-11-17 03:21:29,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:21:29,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600191639] [2021-11-17 03:21:29,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:21:29,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:21:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:29,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:21:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:29,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-17 03:21:29,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:21:29,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600191639] [2021-11-17 03:21:29,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600191639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:21:29,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:21:29,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-17 03:21:29,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124913324] [2021-11-17 03:21:29,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:21:29,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 03:21:29,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:21:30,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 03:21:30,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 03:21:30,004 INFO L87 Difference]: Start difference. First operand has 751 states, 578 states have (on average 1.4792387543252594) internal successors, (855), 592 states have internal predecessors, (855), 140 states have call successors, (140), 32 states have call predecessors, (140), 31 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-17 03:21:30,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:21:30,946 INFO L93 Difference]: Finished difference Result 2181 states and 3329 transitions. [2021-11-17 03:21:30,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 03:21:30,949 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-11-17 03:21:30,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:21:30,965 INFO L225 Difference]: With dead ends: 2181 [2021-11-17 03:21:30,965 INFO L226 Difference]: Without dead ends: 1419 [2021-11-17 03:21:30,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 03:21:30,980 INFO L933 BasicCegarLoop]: 1253 mSDtfsCounter, 1087 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-17 03:21:30,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 2303 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-17 03:21:30,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-11-17 03:21:31,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1415. [2021-11-17 03:21:31,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1096 states have (on average 1.4753649635036497) internal successors, (1617), 1108 states have internal predecessors, (1617), 258 states have call successors, (258), 61 states have call predecessors, (258), 60 states have return successors, (253), 253 states have call predecessors, (253), 253 states have call successors, (253) [2021-11-17 03:21:31,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 2128 transitions. [2021-11-17 03:21:31,081 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 2128 transitions. Word has length 21 [2021-11-17 03:21:31,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:21:31,082 INFO L470 AbstractCegarLoop]: Abstraction has 1415 states and 2128 transitions. [2021-11-17 03:21:31,082 INFO L471 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-17 03:21:31,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 2128 transitions. [2021-11-17 03:21:31,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-17 03:21:31,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:21:31,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:21:31,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 03:21:31,090 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:21:31,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:21:31,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1015935201, now seen corresponding path program 1 times [2021-11-17 03:21:31,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:21:31,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071480763] [2021-11-17 03:21:31,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:21:31,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:21:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:31,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 03:21:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:31,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-17 03:21:31,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:21:31,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071480763] [2021-11-17 03:21:31,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071480763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:21:31,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:21:31,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-17 03:21:31,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655227125] [2021-11-17 03:21:31,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:21:31,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 03:21:31,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:21:31,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 03:21:31,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 03:21:31,277 INFO L87 Difference]: Start difference. First operand 1415 states and 2128 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-17 03:21:31,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:21:31,441 INFO L93 Difference]: Finished difference Result 3978 states and 5978 transitions. [2021-11-17 03:21:31,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 03:21:31,442 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-17 03:21:31,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:21:31,454 INFO L225 Difference]: With dead ends: 3978 [2021-11-17 03:21:31,455 INFO L226 Difference]: Without dead ends: 2566 [2021-11-17 03:21:31,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 03:21:31,462 INFO L933 BasicCegarLoop]: 1244 mSDtfsCounter, 904 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-17 03:21:31,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 2288 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-17 03:21:31,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2021-11-17 03:21:31,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2549. [2021-11-17 03:21:31,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2549 states, 1962 states have (on average 1.4658511722731906) internal successors, (2876), 1982 states have internal predecessors, (2876), 481 states have call successors, (481), 106 states have call predecessors, (481), 105 states have return successors, (476), 476 states have call predecessors, (476), 476 states have call successors, (476) [2021-11-17 03:21:31,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 3833 transitions. [2021-11-17 03:21:31,548 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 3833 transitions. Word has length 24 [2021-11-17 03:21:31,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:21:31,548 INFO L470 AbstractCegarLoop]: Abstraction has 2549 states and 3833 transitions. [2021-11-17 03:21:31,548 INFO L471 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-17 03:21:31,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 3833 transitions. [2021-11-17 03:21:31,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-17 03:21:31,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:21:31,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:21:31,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 03:21:31,551 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:21:31,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:21:31,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2094049435, now seen corresponding path program 1 times [2021-11-17 03:21:31,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:21:31,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449810838] [2021-11-17 03:21:31,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:21:31,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:21:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:31,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:21:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-17 03:21:31,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:21:31,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449810838] [2021-11-17 03:21:31,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449810838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:21:31,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:21:31,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 03:21:31,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332041995] [2021-11-17 03:21:31,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:21:31,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 03:21:31,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:21:31,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 03:21:31,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 03:21:31,701 INFO L87 Difference]: Start difference. First operand 2549 states and 3833 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-17 03:21:33,757 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:21:35,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:21:35,256 INFO L93 Difference]: Finished difference Result 2559 states and 3854 transitions. [2021-11-17 03:21:35,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 03:21:35,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-11-17 03:21:35,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:21:35,268 INFO L225 Difference]: With dead ends: 2559 [2021-11-17 03:21:35,269 INFO L226 Difference]: Without dead ends: 2556 [2021-11-17 03:21:35,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 03:21:35,270 INFO L933 BasicCegarLoop]: 1086 mSDtfsCounter, 1064 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 185 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-17 03:21:35,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1158 Valid, 1803 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 164 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-11-17 03:21:35,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-11-17 03:21:35,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2548. [2021-11-17 03:21:35,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 1962 states have (on average 1.4653414882772682) internal successors, (2875), 1981 states have internal predecessors, (2875), 480 states have call successors, (480), 106 states have call predecessors, (480), 105 states have return successors, (476), 476 states have call predecessors, (476), 476 states have call successors, (476) [2021-11-17 03:21:35,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 3831 transitions. [2021-11-17 03:21:35,337 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 3831 transitions. Word has length 25 [2021-11-17 03:21:35,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:21:35,337 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 3831 transitions. [2021-11-17 03:21:35,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-17 03:21:35,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 3831 transitions. [2021-11-17 03:21:35,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-17 03:21:35,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:21:35,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:21:35,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-17 03:21:35,339 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:21:35,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:21:35,339 INFO L85 PathProgramCache]: Analyzing trace with hash -491175993, now seen corresponding path program 1 times [2021-11-17 03:21:35,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:21:35,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482243151] [2021-11-17 03:21:35,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:21:35,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:21:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:35,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:21:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-17 03:21:35,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:21:35,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482243151] [2021-11-17 03:21:35,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482243151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:21:35,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:21:35,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 03:21:35,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433881708] [2021-11-17 03:21:35,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:21:35,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 03:21:35,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:21:35,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 03:21:35,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 03:21:35,438 INFO L87 Difference]: Start difference. First operand 2548 states and 3831 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-17 03:21:37,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:21:38,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:21:38,942 INFO L93 Difference]: Finished difference Result 2558 states and 3852 transitions. [2021-11-17 03:21:38,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 03:21:38,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-17 03:21:38,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:21:38,953 INFO L225 Difference]: With dead ends: 2558 [2021-11-17 03:21:38,953 INFO L226 Difference]: Without dead ends: 2555 [2021-11-17 03:21:38,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 03:21:38,955 INFO L933 BasicCegarLoop]: 1084 mSDtfsCounter, 1061 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 184 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-17 03:21:38,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1155 Valid, 1800 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 164 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2021-11-17 03:21:38,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2021-11-17 03:21:39,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 2547. [2021-11-17 03:21:39,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2547 states, 1962 states have (on average 1.4648318042813455) internal successors, (2874), 1980 states have internal predecessors, (2874), 479 states have call successors, (479), 106 states have call predecessors, (479), 105 states have return successors, (476), 476 states have call predecessors, (476), 476 states have call successors, (476) [2021-11-17 03:21:39,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 3829 transitions. [2021-11-17 03:21:39,038 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 3829 transitions. Word has length 26 [2021-11-17 03:21:39,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:21:39,038 INFO L470 AbstractCegarLoop]: Abstraction has 2547 states and 3829 transitions. [2021-11-17 03:21:39,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-17 03:21:39,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 3829 transitions. [2021-11-17 03:21:39,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-17 03:21:39,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:21:39,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:21:39,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-17 03:21:39,040 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:21:39,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:21:39,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1953265320, now seen corresponding path program 1 times [2021-11-17 03:21:39,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:21:39,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314513322] [2021-11-17 03:21:39,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:21:39,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:21:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:39,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:21:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:39,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-17 03:21:39,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:21:39,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314513322] [2021-11-17 03:21:39,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314513322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:21:39,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:21:39,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 03:21:39,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603777153] [2021-11-17 03:21:39,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:21:39,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 03:21:39,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:21:39,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 03:21:39,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 03:21:39,178 INFO L87 Difference]: Start difference. First operand 2547 states and 3829 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-17 03:21:41,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:21:43,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:21:43,656 INFO L93 Difference]: Finished difference Result 7585 states and 11451 transitions. [2021-11-17 03:21:43,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 03:21:43,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-11-17 03:21:43,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:21:43,678 INFO L225 Difference]: With dead ends: 7585 [2021-11-17 03:21:43,678 INFO L226 Difference]: Without dead ends: 5029 [2021-11-17 03:21:43,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 03:21:43,688 INFO L933 BasicCegarLoop]: 1197 mSDtfsCounter, 1126 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 315 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-17 03:21:43,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1227 Valid, 2910 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 378 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2021-11-17 03:21:43,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5029 states. [2021-11-17 03:21:43,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5029 to 5004. [2021-11-17 03:21:43,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5004 states, 3857 states have (on average 1.467461757842883) internal successors, (5660), 3900 states have internal predecessors, (5660), 949 states have call successors, (949), 205 states have call predecessors, (949), 197 states have return successors, (939), 930 states have call predecessors, (939), 939 states have call successors, (939) [2021-11-17 03:21:43,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5004 states to 5004 states and 7548 transitions. [2021-11-17 03:21:43,886 INFO L78 Accepts]: Start accepts. Automaton has 5004 states and 7548 transitions. Word has length 27 [2021-11-17 03:21:43,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:21:43,887 INFO L470 AbstractCegarLoop]: Abstraction has 5004 states and 7548 transitions. [2021-11-17 03:21:43,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-17 03:21:43,887 INFO L276 IsEmpty]: Start isEmpty. Operand 5004 states and 7548 transitions. [2021-11-17 03:21:43,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-17 03:21:43,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:21:43,889 INFO L514 BasicCegarLoop]: 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] [2021-11-17 03:21:43,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-17 03:21:43,890 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:21:43,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:21:43,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1400463080, now seen corresponding path program 1 times [2021-11-17 03:21:43,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:21:43,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898179863] [2021-11-17 03:21:43,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:21:43,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:21:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:44,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:21:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:44,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-17 03:21:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:44,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:21:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:44,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:21:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:44,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 03:21:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:44,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 03:21:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:44,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:21:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-17 03:21:44,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:21:44,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898179863] [2021-11-17 03:21:44,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898179863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:21:44,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:21:44,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:21:44,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472467746] [2021-11-17 03:21:44,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:21:44,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:21:44,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:21:44,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:21:44,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:21:44,093 INFO L87 Difference]: Start difference. First operand 5004 states and 7548 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-17 03:21:46,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:21:48,185 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:21:53,677 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:21:55,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:21:57,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:21:59,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:21:59,541 INFO L93 Difference]: Finished difference Result 10466 states and 15931 transitions. [2021-11-17 03:21:59,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 03:21:59,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2021-11-17 03:21:59,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:21:59,565 INFO L225 Difference]: With dead ends: 10466 [2021-11-17 03:21:59,575 INFO L226 Difference]: Without dead ends: 5461 [2021-11-17 03:21:59,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:21:59,590 INFO L933 BasicCegarLoop]: 1102 mSDtfsCounter, 182 mSDsluCounter, 3984 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 154 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 5086 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2021-11-17 03:21:59,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 5086 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1071 Invalid, 5 Unknown, 0 Unchecked, 15.3s Time] [2021-11-17 03:21:59,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5461 states. [2021-11-17 03:21:59,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5461 to 5006. [2021-11-17 03:21:59,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5006 states, 3859 states have (on average 1.4661829489505054) internal successors, (5658), 3902 states have internal predecessors, (5658), 949 states have call successors, (949), 205 states have call predecessors, (949), 197 states have return successors, (939), 930 states have call predecessors, (939), 939 states have call successors, (939) [2021-11-17 03:21:59,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5006 states to 5006 states and 7546 transitions. [2021-11-17 03:21:59,729 INFO L78 Accepts]: Start accepts. Automaton has 5006 states and 7546 transitions. Word has length 77 [2021-11-17 03:21:59,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:21:59,730 INFO L470 AbstractCegarLoop]: Abstraction has 5006 states and 7546 transitions. [2021-11-17 03:21:59,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-17 03:21:59,731 INFO L276 IsEmpty]: Start isEmpty. Operand 5006 states and 7546 transitions. [2021-11-17 03:21:59,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-17 03:21:59,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:21:59,740 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 03:21:59,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-17 03:21:59,740 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:21:59,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:21:59,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1710126176, now seen corresponding path program 1 times [2021-11-17 03:21:59,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:21:59,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853563046] [2021-11-17 03:21:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:21:59,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:21:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:59,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:21:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:59,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 03:21:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:21:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:59,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 03:21:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:59,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:21:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:59,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-17 03:21:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:59,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:21:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:59,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:21:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:59,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 03:21:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:59,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 03:21:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:59,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:21:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:21:59,950 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-17 03:21:59,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:21:59,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853563046] [2021-11-17 03:21:59,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853563046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:21:59,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:21:59,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:21:59,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31469750] [2021-11-17 03:21:59,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:21:59,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:21:59,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:21:59,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:21:59,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:21:59,953 INFO L87 Difference]: Start difference. First operand 5006 states and 7546 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-17 03:22:01,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:22:07,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:22:09,182 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:22:11,255 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:22:12,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:22:12,624 INFO L93 Difference]: Finished difference Result 11182 states and 17097 transitions. [2021-11-17 03:22:12,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 03:22:12,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 104 [2021-11-17 03:22:12,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:22:12,652 INFO L225 Difference]: With dead ends: 11182 [2021-11-17 03:22:12,652 INFO L226 Difference]: Without dead ends: 6179 [2021-11-17 03:22:12,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-17 03:22:12,667 INFO L933 BasicCegarLoop]: 1354 mSDtfsCounter, 728 mSDsluCounter, 3849 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 339 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 5203 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-11-17 03:22:12,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 5203 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 840 Invalid, 4 Unknown, 0 Unchecked, 12.5s Time] [2021-11-17 03:22:12,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6179 states. [2021-11-17 03:22:12,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6179 to 5014. [2021-11-17 03:22:12,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 3867 states have (on average 1.465218515645203) internal successors, (5666), 3910 states have internal predecessors, (5666), 949 states have call successors, (949), 205 states have call predecessors, (949), 197 states have return successors, (939), 930 states have call predecessors, (939), 939 states have call successors, (939) [2021-11-17 03:22:12,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 7554 transitions. [2021-11-17 03:22:12,856 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 7554 transitions. Word has length 104 [2021-11-17 03:22:12,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:22:12,857 INFO L470 AbstractCegarLoop]: Abstraction has 5014 states and 7554 transitions. [2021-11-17 03:22:12,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-17 03:22:12,858 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 7554 transitions. [2021-11-17 03:22:12,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-17 03:22:12,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:22:12,861 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 03:22:12,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-17 03:22:12,861 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:22:12,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:22:12,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1744883690, now seen corresponding path program 1 times [2021-11-17 03:22:12,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:22:12,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023372055] [2021-11-17 03:22:12,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:22:12,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:22:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:12,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:22:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:12,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 03:22:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:12,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:22:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:12,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 03:22:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:12,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:22:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:13,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 03:22:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:13,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:22:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:13,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:22:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:13,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-17 03:22:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-17 03:22:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:13,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:22:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:13,036 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-17 03:22:13,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:22:13,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023372055] [2021-11-17 03:22:13,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023372055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:22:13,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:22:13,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 03:22:13,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665380555] [2021-11-17 03:22:13,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:22:13,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 03:22:13,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:22:13,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 03:22:13,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 03:22:13,038 INFO L87 Difference]: Start difference. First operand 5014 states and 7554 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-17 03:22:15,069 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:22:17,139 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:22:21,840 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:22:23,903 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:22:26,020 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:22:27,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:22:27,311 INFO L93 Difference]: Finished difference Result 10407 states and 16031 transitions. [2021-11-17 03:22:27,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 03:22:27,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 102 [2021-11-17 03:22:27,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:22:27,338 INFO L225 Difference]: With dead ends: 10407 [2021-11-17 03:22:27,339 INFO L226 Difference]: Without dead ends: 5396 [2021-11-17 03:22:27,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:22:27,360 INFO L933 BasicCegarLoop]: 1005 mSDtfsCounter, 1194 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 468 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2021-11-17 03:22:27,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1294 Valid, 2248 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 509 Invalid, 5 Unknown, 0 Unchecked, 14.1s Time] [2021-11-17 03:22:27,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5396 states. [2021-11-17 03:22:27,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5396 to 4990. [2021-11-17 03:22:27,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4990 states, 3851 states have (on average 1.3996364580628409) internal successors, (5390), 3894 states have internal predecessors, (5390), 941 states have call successors, (941), 205 states have call predecessors, (941), 197 states have return successors, (931), 922 states have call predecessors, (931), 931 states have call successors, (931) [2021-11-17 03:22:27,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4990 states to 4990 states and 7262 transitions. [2021-11-17 03:22:27,523 INFO L78 Accepts]: Start accepts. Automaton has 4990 states and 7262 transitions. Word has length 102 [2021-11-17 03:22:27,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:22:27,524 INFO L470 AbstractCegarLoop]: Abstraction has 4990 states and 7262 transitions. [2021-11-17 03:22:27,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-17 03:22:27,524 INFO L276 IsEmpty]: Start isEmpty. Operand 4990 states and 7262 transitions. [2021-11-17 03:22:27,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-17 03:22:27,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:22:27,530 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 03:22:27,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-17 03:22:27,530 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:22:27,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:22:27,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1621242927, now seen corresponding path program 1 times [2021-11-17 03:22:27,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:22:27,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313959837] [2021-11-17 03:22:27,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:22:27,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:22:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:27,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:22:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:27,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 03:22:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:27,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:22:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:27,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 03:22:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:27,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:22:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:27,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 03:22:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:27,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-17 03:22:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:27,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:22:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:27,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:22:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:27,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-17 03:22:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:27,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-17 03:22:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:27,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:22:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:27,731 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-17 03:22:27,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:22:27,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313959837] [2021-11-17 03:22:27,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313959837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:22:27,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:22:27,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 03:22:27,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561311071] [2021-11-17 03:22:27,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:22:27,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 03:22:27,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:22:27,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 03:22:27,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 03:22:27,734 INFO L87 Difference]: Start difference. First operand 4990 states and 7262 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-17 03:22:29,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:22:37,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:22:39,484 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:22:41,549 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:22:43,678 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:22:45,214 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:22:47,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:22:47,112 INFO L93 Difference]: Finished difference Result 15758 states and 23270 transitions. [2021-11-17 03:22:47,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 03:22:47,113 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 108 [2021-11-17 03:22:47,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:22:47,212 INFO L225 Difference]: With dead ends: 15758 [2021-11-17 03:22:47,214 INFO L226 Difference]: Without dead ends: 10771 [2021-11-17 03:22:47,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:22:47,227 INFO L933 BasicCegarLoop]: 1625 mSDtfsCounter, 1277 mSDsluCounter, 2903 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 555 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 4528 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2021-11-17 03:22:47,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1409 Valid, 4528 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 1078 Invalid, 5 Unknown, 0 Unchecked, 19.1s Time] [2021-11-17 03:22:47,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2021-11-17 03:22:47,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 9936. [2021-11-17 03:22:47,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9936 states, 7665 states have (on average 1.3993476842791912) internal successors, (10726), 7750 states have internal predecessors, (10726), 1877 states have call successors, (1877), 407 states have call predecessors, (1877), 393 states have return successors, (1861), 1842 states have call predecessors, (1861), 1861 states have call successors, (1861) [2021-11-17 03:22:47,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9936 states to 9936 states and 14464 transitions. [2021-11-17 03:22:47,511 INFO L78 Accepts]: Start accepts. Automaton has 9936 states and 14464 transitions. Word has length 108 [2021-11-17 03:22:47,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:22:47,512 INFO L470 AbstractCegarLoop]: Abstraction has 9936 states and 14464 transitions. [2021-11-17 03:22:47,512 INFO L471 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, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-17 03:22:47,512 INFO L276 IsEmpty]: Start isEmpty. Operand 9936 states and 14464 transitions. [2021-11-17 03:22:47,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-17 03:22:47,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:22:47,516 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 03:22:47,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-17 03:22:47,516 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:22:47,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:22:47,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1012080502, now seen corresponding path program 1 times [2021-11-17 03:22:47,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:22:47,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254767115] [2021-11-17 03:22:47,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:22:47,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:22:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:47,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:22:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:47,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 03:22:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:47,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:22:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:47,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 03:22:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:47,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:22:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:47,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 03:22:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:47,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 03:22:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:47,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:22:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:47,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:22:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:47,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-17 03:22:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:47,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 03:22:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:47,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:22:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:22:47,729 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-17 03:22:47,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:22:47,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254767115] [2021-11-17 03:22:47,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254767115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:22:47,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:22:47,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 03:22:47,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719080600] [2021-11-17 03:22:47,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:22:47,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 03:22:47,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:22:47,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 03:22:47,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 03:22:47,731 INFO L87 Difference]: Start difference. First operand 9936 states and 14464 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-17 03:22:49,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:22:51,836 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:22:53,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:00,011 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:02,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:04,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:06,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:08,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:10,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:12,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:23:12,273 INFO L93 Difference]: Finished difference Result 25936 states and 38367 transitions. [2021-11-17 03:23:12,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 03:23:12,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2021-11-17 03:23:12,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:23:12,326 INFO L225 Difference]: With dead ends: 25936 [2021-11-17 03:23:12,326 INFO L226 Difference]: Without dead ends: 16003 [2021-11-17 03:23:12,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:23:12,348 INFO L933 BasicCegarLoop]: 1688 mSDtfsCounter, 1183 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 660 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 4510 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2021-11-17 03:23:12,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1310 Valid, 4510 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 1100 Invalid, 9 Unknown, 0 Unchecked, 24.1s Time] [2021-11-17 03:23:12,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16003 states. [2021-11-17 03:23:12,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16003 to 14784. [2021-11-17 03:23:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14784 states, 11449 states have (on average 1.3945322735610097) internal successors, (15966), 11566 states have internal predecessors, (15966), 2761 states have call successors, (2761), 587 states have call predecessors, (2761), 573 states have return successors, (2745), 2726 states have call predecessors, (2745), 2745 states have call successors, (2745) [2021-11-17 03:23:12,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14784 states to 14784 states and 21472 transitions. [2021-11-17 03:23:12,951 INFO L78 Accepts]: Start accepts. Automaton has 14784 states and 21472 transitions. Word has length 110 [2021-11-17 03:23:12,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:23:12,952 INFO L470 AbstractCegarLoop]: Abstraction has 14784 states and 21472 transitions. [2021-11-17 03:23:12,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-17 03:23:12,953 INFO L276 IsEmpty]: Start isEmpty. Operand 14784 states and 21472 transitions. [2021-11-17 03:23:12,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-17 03:23:12,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:23:12,958 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 03:23:12,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-17 03:23:12,958 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:23:12,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:23:12,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1582291269, now seen corresponding path program 1 times [2021-11-17 03:23:12,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:23:12,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831212414] [2021-11-17 03:23:12,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:23:12,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:23:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:13,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:23:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:13,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 03:23:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:13,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:23:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:13,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 03:23:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:13,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:23:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:13,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 03:23:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:13,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 03:23:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:13,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:23:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:13,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:23:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:13,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 03:23:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:13,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-17 03:23:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:13,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:23:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-17 03:23:13,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:23:13,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831212414] [2021-11-17 03:23:13,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831212414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:23:13,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:23:13,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 03:23:13,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109412015] [2021-11-17 03:23:13,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:23:13,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 03:23:13,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:23:13,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 03:23:13,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 03:23:13,213 INFO L87 Difference]: Start difference. First operand 14784 states and 21472 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-17 03:23:15,244 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:17,310 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:19,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:26,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:28,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:30,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:32,522 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:34,723 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:36,760 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:38,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:23:38,907 INFO L93 Difference]: Finished difference Result 36024 states and 53119 transitions. [2021-11-17 03:23:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 03:23:38,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 131 [2021-11-17 03:23:38,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:23:39,011 INFO L225 Difference]: With dead ends: 36024 [2021-11-17 03:23:39,012 INFO L226 Difference]: Without dead ends: 21243 [2021-11-17 03:23:39,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:23:39,050 INFO L933 BasicCegarLoop]: 1931 mSDtfsCounter, 1189 mSDsluCounter, 3206 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 607 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 5137 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2021-11-17 03:23:39,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1316 Valid, 5137 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 1131 Invalid, 9 Unknown, 0 Unchecked, 25.1s Time] [2021-11-17 03:23:39,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21243 states. [2021-11-17 03:23:39,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21243 to 19632. [2021-11-17 03:23:39,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19632 states, 15233 states have (on average 1.3921092365259633) internal successors, (21206), 15382 states have internal predecessors, (21206), 3645 states have call successors, (3645), 767 states have call predecessors, (3645), 753 states have return successors, (3629), 3610 states have call predecessors, (3629), 3629 states have call successors, (3629) [2021-11-17 03:23:39,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19632 states to 19632 states and 28480 transitions. [2021-11-17 03:23:39,817 INFO L78 Accepts]: Start accepts. Automaton has 19632 states and 28480 transitions. Word has length 131 [2021-11-17 03:23:39,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:23:39,817 INFO L470 AbstractCegarLoop]: Abstraction has 19632 states and 28480 transitions. [2021-11-17 03:23:39,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-17 03:23:39,817 INFO L276 IsEmpty]: Start isEmpty. Operand 19632 states and 28480 transitions. [2021-11-17 03:23:39,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-17 03:23:39,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:23:39,825 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2021-11-17 03:23:39,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-17 03:23:39,825 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:23:39,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:23:39,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1020367177, now seen corresponding path program 1 times [2021-11-17 03:23:39,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:23:39,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091191613] [2021-11-17 03:23:39,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:23:39,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:23:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:39,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:23:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:39,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 03:23:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:39,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:23:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:39,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 03:23:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:39,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:23:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:39,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 03:23:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:39,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 03:23:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:40,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:23:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:40,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:23:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:40,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-17 03:23:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:40,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:23:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:40,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:23:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:40,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:23:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:40,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-17 03:23:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:23:40,033 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-17 03:23:40,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:23:40,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091191613] [2021-11-17 03:23:40,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091191613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:23:40,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:23:40,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:23:40,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056039219] [2021-11-17 03:23:40,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:23:40,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:23:40,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:23:40,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:23:40,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:23:40,036 INFO L87 Difference]: Start difference. First operand 19632 states and 28480 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:23:41,650 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:43,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:45,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:47,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:49,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:57,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:23:59,663 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:01,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:03,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:05,854 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:07,894 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:09,928 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:11,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:14,203 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:17,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:19,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:21,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:24,037 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:26,069 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:28,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:30,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:32,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:34,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:36,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:38,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:43,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:24:43,246 INFO L93 Difference]: Finished difference Result 46112 states and 67871 transitions. [2021-11-17 03:24:43,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 03:24:43,247 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 152 [2021-11-17 03:24:43,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:24:43,347 INFO L225 Difference]: With dead ends: 46112 [2021-11-17 03:24:43,347 INFO L226 Difference]: Without dead ends: 26483 [2021-11-17 03:24:43,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-17 03:24:43,387 INFO L933 BasicCegarLoop]: 1734 mSDtfsCounter, 1439 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 4748 mSolverCounterSat, 835 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 3597 SdHoareTripleChecker+Invalid, 5605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 835 IncrementalHoareTripleChecker+Valid, 4748 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.4s IncrementalHoareTripleChecker+Time [2021-11-17 03:24:43,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1554 Valid, 3597 Invalid, 5605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [835 Valid, 4748 Invalid, 22 Unknown, 0 Unchecked, 62.4s Time] [2021-11-17 03:24:43,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26483 states. [2021-11-17 03:24:44,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26483 to 24480. [2021-11-17 03:24:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24480 states, 19017 states have (on average 1.3906504706315401) internal successors, (26446), 19198 states have internal predecessors, (26446), 4529 states have call successors, (4529), 947 states have call predecessors, (4529), 933 states have return successors, (4513), 4494 states have call predecessors, (4513), 4513 states have call successors, (4513) [2021-11-17 03:24:44,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24480 states to 24480 states and 35488 transitions. [2021-11-17 03:24:44,387 INFO L78 Accepts]: Start accepts. Automaton has 24480 states and 35488 transitions. Word has length 152 [2021-11-17 03:24:44,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:24:44,387 INFO L470 AbstractCegarLoop]: Abstraction has 24480 states and 35488 transitions. [2021-11-17 03:24:44,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:24:44,388 INFO L276 IsEmpty]: Start isEmpty. Operand 24480 states and 35488 transitions. [2021-11-17 03:24:44,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-17 03:24:44,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:24:44,395 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-11-17 03:24:44,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-17 03:24:44,396 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:24:44,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:24:44,396 INFO L85 PathProgramCache]: Analyzing trace with hash 2130073905, now seen corresponding path program 1 times [2021-11-17 03:24:44,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:24:44,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289092534] [2021-11-17 03:24:44,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:24:44,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:24:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:24:44,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:24:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:24:44,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 03:24:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:24:44,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:24:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:24:44,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 03:24:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:24:44,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:24:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:24:44,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 03:24:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:24:44,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 03:24:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:24:44,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:24:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:24:44,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:24:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:24:44,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-17 03:24:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:24:44,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:24:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:24:44,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:24:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:24:44,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:24:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:24:44,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:24:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:24:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-17 03:24:44,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:24:44,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289092534] [2021-11-17 03:24:44,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289092534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:24:44,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:24:44,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 03:24:44,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598855104] [2021-11-17 03:24:44,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:24:44,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 03:24:44,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:24:44,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 03:24:44,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:24:44,692 INFO L87 Difference]: Start difference. First operand 24480 states and 35488 transitions. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:24:46,735 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:48,786 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:50,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:56,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:24:58,501 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:00,528 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:02,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:04,749 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:06,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:08,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:10,847 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:13,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:15,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:17,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:19,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:22,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:25:22,299 INFO L93 Difference]: Finished difference Result 50943 states and 74695 transitions. [2021-11-17 03:25:22,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 03:25:22,300 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 153 [2021-11-17 03:25:22,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:25:22,426 INFO L225 Difference]: With dead ends: 50943 [2021-11-17 03:25:22,427 INFO L226 Difference]: Without dead ends: 26466 [2021-11-17 03:25:22,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-11-17 03:25:22,482 INFO L933 BasicCegarLoop]: 953 mSDtfsCounter, 1740 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 2783 mSolverCounterSat, 1064 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 3862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1064 IncrementalHoareTripleChecker+Valid, 2783 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.8s IncrementalHoareTripleChecker+Time [2021-11-17 03:25:22,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1760 Valid, 2499 Invalid, 3862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1064 Valid, 2783 Invalid, 15 Unknown, 0 Unchecked, 36.8s Time] [2021-11-17 03:25:22,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26466 states. [2021-11-17 03:25:23,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26466 to 24480. [2021-11-17 03:25:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24480 states, 19017 states have (on average 1.3904401325130147) internal successors, (26442), 19198 states have internal predecessors, (26442), 4529 states have call successors, (4529), 947 states have call predecessors, (4529), 933 states have return successors, (4513), 4494 states have call predecessors, (4513), 4513 states have call successors, (4513) [2021-11-17 03:25:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24480 states to 24480 states and 35484 transitions. [2021-11-17 03:25:23,581 INFO L78 Accepts]: Start accepts. Automaton has 24480 states and 35484 transitions. Word has length 153 [2021-11-17 03:25:23,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:25:23,582 INFO L470 AbstractCegarLoop]: Abstraction has 24480 states and 35484 transitions. [2021-11-17 03:25:23,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:25:23,582 INFO L276 IsEmpty]: Start isEmpty. Operand 24480 states and 35484 transitions. [2021-11-17 03:25:23,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-17 03:25:23,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:25:23,591 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2021-11-17 03:25:23,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-17 03:25:23,592 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:25:23,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:25:23,592 INFO L85 PathProgramCache]: Analyzing trace with hash 574017791, now seen corresponding path program 1 times [2021-11-17 03:25:23,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:25:23,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634417459] [2021-11-17 03:25:23,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:25:23,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:25:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:25:23,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:25:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:25:23,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 03:25:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:25:23,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:25:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:25:23,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 03:25:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:25:23,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:25:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:25:23,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 03:25:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:25:23,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 03:25:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:25:23,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:25:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:25:23,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:25:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:25:23,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 03:25:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:25:23,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:25:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:25:23,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:25:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:25:23,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:25:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:25:23,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-17 03:25:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:25:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-17 03:25:23,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:25:23,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634417459] [2021-11-17 03:25:23,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634417459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:25:23,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:25:23,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:25:23,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136454400] [2021-11-17 03:25:23,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:25:23,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:25:23,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:25:23,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:25:23,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:25:23,836 INFO L87 Difference]: Start difference. First operand 24480 states and 35484 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:25:25,867 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:27,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:29,606 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:31,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:33,742 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:42,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:44,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:46,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:48,606 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:50,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:52,831 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:54,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:56,888 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:25:59,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:01,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:03,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:05,245 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:08,174 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:10,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:12,234 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:14,743 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:16,777 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:18,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:20,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:22,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:24,920 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:29,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:26:29,520 INFO L93 Difference]: Finished difference Result 56200 states and 82615 transitions. [2021-11-17 03:26:29,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 03:26:29,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 152 [2021-11-17 03:26:29,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:26:29,647 INFO L225 Difference]: With dead ends: 56200 [2021-11-17 03:26:29,647 INFO L226 Difference]: Without dead ends: 31723 [2021-11-17 03:26:29,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-17 03:26:29,700 INFO L933 BasicCegarLoop]: 1725 mSDtfsCounter, 1439 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 4744 mSolverCounterSat, 833 mSolverCounterUnsat, 25 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 3547 SdHoareTripleChecker+Invalid, 5602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 833 IncrementalHoareTripleChecker+Valid, 4744 IncrementalHoareTripleChecker+Invalid, 25 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.7s IncrementalHoareTripleChecker+Time [2021-11-17 03:26:29,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1559 Valid, 3547 Invalid, 5602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [833 Valid, 4744 Invalid, 25 Unknown, 0 Unchecked, 64.7s Time] [2021-11-17 03:26:29,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31723 states. [2021-11-17 03:26:30,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31723 to 29328. [2021-11-17 03:26:30,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29328 states, 22801 states have (on average 1.389500460506118) internal successors, (31682), 23014 states have internal predecessors, (31682), 5413 states have call successors, (5413), 1127 states have call predecessors, (5413), 1113 states have return successors, (5397), 5378 states have call predecessors, (5397), 5397 states have call successors, (5397) [2021-11-17 03:26:30,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29328 states to 29328 states and 42492 transitions. [2021-11-17 03:26:30,802 INFO L78 Accepts]: Start accepts. Automaton has 29328 states and 42492 transitions. Word has length 152 [2021-11-17 03:26:30,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:26:30,803 INFO L470 AbstractCegarLoop]: Abstraction has 29328 states and 42492 transitions. [2021-11-17 03:26:30,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:26:30,807 INFO L276 IsEmpty]: Start isEmpty. Operand 29328 states and 42492 transitions. [2021-11-17 03:26:30,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-17 03:26:30,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:26:30,835 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2021-11-17 03:26:30,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-17 03:26:30,836 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:26:30,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:26:30,836 INFO L85 PathProgramCache]: Analyzing trace with hash 440004285, now seen corresponding path program 1 times [2021-11-17 03:26:30,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:26:30,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883832545] [2021-11-17 03:26:30,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:26:30,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:26:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:26:30,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:26:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:26:30,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 03:26:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:26:30,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:26:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:26:30,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 03:26:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:26:30,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:26:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:26:30,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 03:26:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:26:30,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 03:26:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:26:30,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:26:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:26:31,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:26:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:26:31,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 03:26:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:26:31,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:26:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:26:31,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:26:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:26:31,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:26:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:26:31,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-17 03:26:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:26:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-17 03:26:31,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:26:31,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883832545] [2021-11-17 03:26:31,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883832545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:26:31,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:26:31,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 03:26:31,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829531845] [2021-11-17 03:26:31,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:26:31,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 03:26:31,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:26:31,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 03:26:31,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:26:31,042 INFO L87 Difference]: Start difference. First operand 29328 states and 42492 transitions. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:26:33,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:34,580 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:36,652 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:43,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:45,304 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:47,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:50,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:52,558 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:54,595 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:56,626 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:26:58,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:01,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:03,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:06,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:27:06,800 INFO L93 Difference]: Finished difference Result 61031 states and 89439 transitions. [2021-11-17 03:27:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 03:27:06,801 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 152 [2021-11-17 03:27:06,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:27:06,917 INFO L225 Difference]: With dead ends: 61031 [2021-11-17 03:27:06,917 INFO L226 Difference]: Without dead ends: 31706 [2021-11-17 03:27:06,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-11-17 03:27:06,972 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 1745 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 2787 mSolverCounterSat, 1070 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 3868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1070 IncrementalHoareTripleChecker+Valid, 2787 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.6s IncrementalHoareTripleChecker+Time [2021-11-17 03:27:06,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1766 Valid, 2479 Invalid, 3868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1070 Valid, 2787 Invalid, 11 Unknown, 0 Unchecked, 34.6s Time] [2021-11-17 03:27:06,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31706 states. [2021-11-17 03:27:07,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31706 to 29328. [2021-11-17 03:27:07,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29328 states, 22801 states have (on average 1.3893250296039648) internal successors, (31678), 23014 states have internal predecessors, (31678), 5413 states have call successors, (5413), 1127 states have call predecessors, (5413), 1113 states have return successors, (5397), 5378 states have call predecessors, (5397), 5397 states have call successors, (5397) [2021-11-17 03:27:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29328 states to 29328 states and 42488 transitions. [2021-11-17 03:27:07,935 INFO L78 Accepts]: Start accepts. Automaton has 29328 states and 42488 transitions. Word has length 152 [2021-11-17 03:27:07,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:27:07,943 INFO L470 AbstractCegarLoop]: Abstraction has 29328 states and 42488 transitions. [2021-11-17 03:27:07,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:27:07,943 INFO L276 IsEmpty]: Start isEmpty. Operand 29328 states and 42488 transitions. [2021-11-17 03:27:07,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-17 03:27:07,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:27:07,952 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 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] [2021-11-17 03:27:07,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-17 03:27:07,953 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:27:07,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:27:07,953 INFO L85 PathProgramCache]: Analyzing trace with hash 2001149956, now seen corresponding path program 1 times [2021-11-17 03:27:07,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:27:07,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421020700] [2021-11-17 03:27:07,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:27:07,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:27:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:08,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:27:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:08,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 03:27:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:08,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:27:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:08,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 03:27:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:08,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:27:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:08,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 03:27:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:08,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 03:27:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:08,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:27:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:08,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:27:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:08,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-17 03:27:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:08,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:27:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:08,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:27:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:08,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:27:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:08,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-17 03:27:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:08,339 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-17 03:27:08,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:27:08,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421020700] [2021-11-17 03:27:08,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421020700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:27:08,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:27:08,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:27:08,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711215562] [2021-11-17 03:27:08,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:27:08,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:27:08,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:27:08,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:27:08,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:27:08,342 INFO L87 Difference]: Start difference. First operand 29328 states and 42488 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:27:10,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:12,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:14,517 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:16,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:23,872 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:25,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:27,948 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:30,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:32,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:34,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:36,386 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:38,431 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:40,462 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:43,140 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:45,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:47,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:49,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:51,742 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:53,776 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:27:57,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:27:57,305 INFO L93 Difference]: Finished difference Result 66288 states and 97359 transitions. [2021-11-17 03:27:57,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 03:27:57,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 150 [2021-11-17 03:27:57,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:27:57,440 INFO L225 Difference]: With dead ends: 66288 [2021-11-17 03:27:57,440 INFO L226 Difference]: Without dead ends: 36963 [2021-11-17 03:27:57,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-17 03:27:57,495 INFO L933 BasicCegarLoop]: 1726 mSDtfsCounter, 1636 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 3474 mSolverCounterSat, 1163 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 3205 SdHoareTripleChecker+Invalid, 4656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1163 IncrementalHoareTripleChecker+Valid, 3474 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.9s IncrementalHoareTripleChecker+Time [2021-11-17 03:27:57,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1756 Valid, 3205 Invalid, 4656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1163 Valid, 3474 Invalid, 19 Unknown, 0 Unchecked, 47.9s Time] [2021-11-17 03:27:57,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36963 states. [2021-11-17 03:27:58,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36963 to 34176. [2021-11-17 03:27:58,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34176 states, 26585 states have (on average 1.3886778258416401) internal successors, (36918), 26830 states have internal predecessors, (36918), 6297 states have call successors, (6297), 1307 states have call predecessors, (6297), 1293 states have return successors, (6281), 6262 states have call predecessors, (6281), 6281 states have call successors, (6281) [2021-11-17 03:27:58,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34176 states to 34176 states and 49496 transitions. [2021-11-17 03:27:58,556 INFO L78 Accepts]: Start accepts. Automaton has 34176 states and 49496 transitions. Word has length 150 [2021-11-17 03:27:58,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:27:58,556 INFO L470 AbstractCegarLoop]: Abstraction has 34176 states and 49496 transitions. [2021-11-17 03:27:58,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:27:58,557 INFO L276 IsEmpty]: Start isEmpty. Operand 34176 states and 49496 transitions. [2021-11-17 03:27:58,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-17 03:27:58,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:27:58,565 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2021-11-17 03:27:58,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-17 03:27:58,566 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:27:58,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:27:58,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1307824516, now seen corresponding path program 1 times [2021-11-17 03:27:58,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:27:58,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263107292] [2021-11-17 03:27:58,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:27:58,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:27:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:58,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:27:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:58,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 03:27:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:58,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:27:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:58,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 03:27:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:58,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:27:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:58,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 03:27:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:58,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 03:27:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:58,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:27:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:58,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:27:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:58,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-17 03:27:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:58,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:27:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:58,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:27:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:58,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:27:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:58,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-17 03:27:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:27:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-17 03:27:58,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:27:58,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263107292] [2021-11-17 03:27:58,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263107292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:27:58,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:27:58,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 03:27:58,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599148330] [2021-11-17 03:27:58,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:27:58,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 03:27:58,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:27:58,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 03:27:58,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:27:58,731 INFO L87 Difference]: Start difference. First operand 34176 states and 49496 transitions. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:28:00,762 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:28:08,396 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:28:10,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:28:11,486 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:28:13,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:28:15,545 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:28:17,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:28:19,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:28:21,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:28:24,156 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:28:26,191 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:28:28,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:28:31,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:28:31,958 INFO L93 Difference]: Finished difference Result 71119 states and 104183 transitions. [2021-11-17 03:28:31,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 03:28:31,959 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 151 [2021-11-17 03:28:31,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:28:32,100 INFO L225 Difference]: With dead ends: 71119 [2021-11-17 03:28:32,100 INFO L226 Difference]: Without dead ends: 36946 [2021-11-17 03:28:32,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-11-17 03:28:32,166 INFO L933 BasicCegarLoop]: 934 mSDtfsCounter, 1571 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 3349 mSolverCounterSat, 780 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 4140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 780 IncrementalHoareTripleChecker+Valid, 3349 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.0s IncrementalHoareTripleChecker+Time [2021-11-17 03:28:32,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1591 Valid, 2695 Invalid, 4140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [780 Valid, 3349 Invalid, 11 Unknown, 0 Unchecked, 32.0s Time] [2021-11-17 03:28:32,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36946 states. [2021-11-17 03:28:33,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36946 to 34176. [2021-11-17 03:28:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34176 states, 26585 states have (on average 1.3885273650554824) internal successors, (36914), 26830 states have internal predecessors, (36914), 6297 states have call successors, (6297), 1307 states have call predecessors, (6297), 1293 states have return successors, (6281), 6262 states have call predecessors, (6281), 6281 states have call successors, (6281) [2021-11-17 03:28:33,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34176 states to 34176 states and 49492 transitions. [2021-11-17 03:28:33,410 INFO L78 Accepts]: Start accepts. Automaton has 34176 states and 49492 transitions. Word has length 151 [2021-11-17 03:28:33,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:28:33,410 INFO L470 AbstractCegarLoop]: Abstraction has 34176 states and 49492 transitions. [2021-11-17 03:28:33,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:28:33,411 INFO L276 IsEmpty]: Start isEmpty. Operand 34176 states and 49492 transitions. [2021-11-17 03:28:33,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-17 03:28:33,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:28:33,436 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 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] [2021-11-17 03:28:33,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-17 03:28:33,436 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:28:33,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:28:33,436 INFO L85 PathProgramCache]: Analyzing trace with hash 134942618, now seen corresponding path program 1 times [2021-11-17 03:28:33,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:28:33,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964410203] [2021-11-17 03:28:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:28:33,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:28:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:33,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:28:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:33,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 03:28:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:33,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:28:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:33,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 03:28:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:33,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:28:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:33,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 03:28:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:33,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 03:28:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:33,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:28:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:33,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:28:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:33,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-17 03:28:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:33,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:28:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:33,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:28:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:33,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:28:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:33,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 03:28:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-17 03:28:33,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:28:33,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964410203] [2021-11-17 03:28:33,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964410203] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 03:28:33,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579692124] [2021-11-17 03:28:33,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:28:33,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 03:28:33,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 03:28:33,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 03:28:33,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-17 03:28:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:34,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 3270 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-17 03:28:34,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 03:28:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-17 03:28:34,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 03:28:34,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579692124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:28:34,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 03:28:34,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-11-17 03:28:34,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320626324] [2021-11-17 03:28:34,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:28:34,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 03:28:34,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:28:34,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 03:28:34,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-11-17 03:28:34,457 INFO L87 Difference]: Start difference. First operand 34176 states and 49492 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:28:36,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:28:37,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:28:37,662 INFO L93 Difference]: Finished difference Result 68389 states and 99027 transitions. [2021-11-17 03:28:37,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 03:28:37,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 150 [2021-11-17 03:28:37,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:28:37,779 INFO L225 Difference]: With dead ends: 68389 [2021-11-17 03:28:37,779 INFO L226 Difference]: Without dead ends: 34188 [2021-11-17 03:28:37,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-17 03:28:37,845 INFO L933 BasicCegarLoop]: 1075 mSDtfsCounter, 28 mSDsluCounter, 4253 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 5328 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-17 03:28:37,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 5328 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-17 03:28:37,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34188 states. [2021-11-17 03:28:38,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34188 to 34129. [2021-11-17 03:28:38,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34129 states, 26538 states have (on average 1.3881603738036024) internal successors, (36839), 26790 states have internal predecessors, (36839), 6297 states have call successors, (6297), 1307 states have call predecessors, (6297), 1293 states have return successors, (6281), 6255 states have call predecessors, (6281), 6281 states have call successors, (6281) [2021-11-17 03:28:38,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34129 states to 34129 states and 49417 transitions. [2021-11-17 03:28:38,947 INFO L78 Accepts]: Start accepts. Automaton has 34129 states and 49417 transitions. Word has length 150 [2021-11-17 03:28:38,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:28:38,947 INFO L470 AbstractCegarLoop]: Abstraction has 34129 states and 49417 transitions. [2021-11-17 03:28:38,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:28:38,948 INFO L276 IsEmpty]: Start isEmpty. Operand 34129 states and 49417 transitions. [2021-11-17 03:28:38,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-17 03:28:38,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:28:38,955 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-17 03:28:38,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-17 03:28:39,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-17 03:28:39,175 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:28:39,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:28:39,175 INFO L85 PathProgramCache]: Analyzing trace with hash -226382408, now seen corresponding path program 1 times [2021-11-17 03:28:39,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:28:39,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770786605] [2021-11-17 03:28:39,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:28:39,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:28:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:39,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:28:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:39,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 03:28:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:39,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:28:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:39,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 03:28:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:39,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:28:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:39,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 03:28:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:39,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:28:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:39,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:28:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:39,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 03:28:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:28:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:39,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:28:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:39,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-17 03:28:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:39,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:28:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:39,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:28:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:39,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:28:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:39,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-17 03:28:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-17 03:28:39,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:28:39,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770786605] [2021-11-17 03:28:39,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770786605] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 03:28:39,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227206993] [2021-11-17 03:28:39,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:28:39,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 03:28:39,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 03:28:39,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 03:28:39,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-17 03:28:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:39,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 3345 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 03:28:39,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 03:28:40,106 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-17 03:28:40,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 03:28:40,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227206993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:28:40,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 03:28:40,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2021-11-17 03:28:40,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544028690] [2021-11-17 03:28:40,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:28:40,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 03:28:40,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:28:40,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 03:28:40,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:28:40,108 INFO L87 Difference]: Start difference. First operand 34129 states and 49417 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-17 03:28:41,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:28:44,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:28:44,403 INFO L93 Difference]: Finished difference Result 102380 states and 148243 transitions. [2021-11-17 03:28:44,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 03:28:44,403 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 159 [2021-11-17 03:28:44,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:28:44,886 INFO L225 Difference]: With dead ends: 102380 [2021-11-17 03:28:44,886 INFO L226 Difference]: Without dead ends: 102365 [2021-11-17 03:28:44,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:28:44,947 INFO L933 BasicCegarLoop]: 2126 mSDtfsCounter, 2009 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2009 SdHoareTripleChecker+Valid, 4120 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-17 03:28:44,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2009 Valid, 4120 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-17 03:28:45,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102365 states. [2021-11-17 03:28:48,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102365 to 102319. [2021-11-17 03:28:48,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102319 states, 79560 states have (on average 1.3882227249874308) internal successors, (110447), 80314 states have internal predecessors, (110447), 18881 states have call successors, (18881), 3915 states have call predecessors, (18881), 3877 states have return successors, (18841), 18761 states have call predecessors, (18841), 18841 states have call successors, (18841) [2021-11-17 03:28:48,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102319 states to 102319 states and 148169 transitions. [2021-11-17 03:28:48,839 INFO L78 Accepts]: Start accepts. Automaton has 102319 states and 148169 transitions. Word has length 159 [2021-11-17 03:28:48,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:28:48,842 INFO L470 AbstractCegarLoop]: Abstraction has 102319 states and 148169 transitions. [2021-11-17 03:28:48,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-17 03:28:48,843 INFO L276 IsEmpty]: Start isEmpty. Operand 102319 states and 148169 transitions. [2021-11-17 03:28:48,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-17 03:28:48,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:28:48,861 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-17 03:28:48,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-17 03:28:49,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 03:28:49,075 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:28:49,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:28:49,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1026502117, now seen corresponding path program 1 times [2021-11-17 03:28:49,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:28:49,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118067453] [2021-11-17 03:28:49,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:28:49,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:28:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:49,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:28:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:49,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 03:28:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:49,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:28:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:49,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 03:28:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:49,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:28:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:49,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-17 03:28:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:49,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:28:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:49,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:28:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:49,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 03:28:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:49,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:28:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:49,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:28:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:49,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-17 03:28:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:49,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:28:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:49,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:28:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:49,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:28:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:49,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-17 03:28:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:28:49,317 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-17 03:28:49,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:28:49,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118067453] [2021-11-17 03:28:49,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118067453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:28:49,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:28:49,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:28:49,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348847478] [2021-11-17 03:28:49,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:28:49,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:28:49,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:28:49,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:28:49,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:28:49,319 INFO L87 Difference]: Start difference. First operand 102319 states and 148169 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-17 03:28:51,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:28:53,733 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:28:55,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:28:57,819 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:06,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:08,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:10,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:12,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:14,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:16,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:18,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:20,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:22,771 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:24,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:27,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:32,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:29:32,101 INFO L93 Difference]: Finished difference Result 159195 states and 232798 transitions. [2021-11-17 03:29:32,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 03:29:32,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 167 [2021-11-17 03:29:32,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:29:32,372 INFO L225 Difference]: With dead ends: 159195 [2021-11-17 03:29:32,372 INFO L226 Difference]: Without dead ends: 53369 [2021-11-17 03:29:32,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-17 03:29:32,709 INFO L933 BasicCegarLoop]: 1433 mSDtfsCounter, 1719 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 3157 mSolverCounterSat, 1057 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 4227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1057 IncrementalHoareTripleChecker+Valid, 3157 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.3s IncrementalHoareTripleChecker+Time [2021-11-17 03:29:32,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1833 Valid, 2480 Invalid, 4227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1057 Valid, 3157 Invalid, 13 Unknown, 0 Unchecked, 40.3s Time] [2021-11-17 03:29:32,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53369 states. [2021-11-17 03:29:33,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53369 to 26388. [2021-11-17 03:29:33,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26388 states, 20492 states have (on average 1.3911770447003708) internal successors, (28508), 20691 states have internal predecessors, (28508), 4907 states have call successors, (4907), 999 states have call predecessors, (4907), 988 states have return successors, (4894), 4877 states have call predecessors, (4894), 4894 states have call successors, (4894) [2021-11-17 03:29:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26388 states to 26388 states and 38309 transitions. [2021-11-17 03:29:33,981 INFO L78 Accepts]: Start accepts. Automaton has 26388 states and 38309 transitions. Word has length 167 [2021-11-17 03:29:33,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:29:33,982 INFO L470 AbstractCegarLoop]: Abstraction has 26388 states and 38309 transitions. [2021-11-17 03:29:33,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-17 03:29:33,982 INFO L276 IsEmpty]: Start isEmpty. Operand 26388 states and 38309 transitions. [2021-11-17 03:29:33,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-17 03:29:33,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:29:33,995 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-17 03:29:33,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-17 03:29:33,995 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:29:33,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:29:33,995 INFO L85 PathProgramCache]: Analyzing trace with hash -532768531, now seen corresponding path program 1 times [2021-11-17 03:29:33,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:29:33,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94877810] [2021-11-17 03:29:33,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:29:33,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:29:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:29:34,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:29:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:29:34,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 03:29:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:29:34,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:29:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:29:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 03:29:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:29:34,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:29:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:29:34,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 03:29:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:29:34,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:29:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:29:34,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:29:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:29:34,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 03:29:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:29:34,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:29:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:29:34,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:29:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:29:34,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-17 03:29:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:29:34,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:29:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:29:34,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:29:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:29:34,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:29:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:29:34,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-17 03:29:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:29:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-17 03:29:34,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:29:34,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94877810] [2021-11-17 03:29:34,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94877810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:29:34,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:29:34,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:29:34,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46871557] [2021-11-17 03:29:34,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:29:34,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:29:34,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:29:34,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:29:34,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:29:34,177 INFO L87 Difference]: Start difference. First operand 26388 states and 38309 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:29:36,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:38,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:40,928 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:48,466 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:50,505 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:52,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:54,678 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:56,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:29:58,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:00,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:03,001 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:05,035 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:07,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:09,903 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:12,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:14,452 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:16,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:20,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:30:20,722 INFO L93 Difference]: Finished difference Result 55199 states and 81370 transitions. [2021-11-17 03:30:20,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 03:30:20,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 177 [2021-11-17 03:30:20,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:30:20,846 INFO L225 Difference]: With dead ends: 55199 [2021-11-17 03:30:20,846 INFO L226 Difference]: Without dead ends: 32390 [2021-11-17 03:30:20,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-17 03:30:20,898 INFO L933 BasicCegarLoop]: 1658 mSDtfsCounter, 1569 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 3460 mSolverCounterSat, 1140 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1676 SdHoareTripleChecker+Valid, 2976 SdHoareTripleChecker+Invalid, 4617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1140 IncrementalHoareTripleChecker+Valid, 3460 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.2s IncrementalHoareTripleChecker+Time [2021-11-17 03:30:20,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1676 Valid, 2976 Invalid, 4617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1140 Valid, 3460 Invalid, 17 Unknown, 0 Unchecked, 45.2s Time] [2021-11-17 03:30:20,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32390 states. [2021-11-17 03:30:21,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32390 to 29856. [2021-11-17 03:30:21,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29856 states, 23198 states have (on average 1.3911544098629192) internal successors, (32272), 23421 states have internal predecessors, (32272), 5543 states have call successors, (5543), 1125 states have call predecessors, (5543), 1114 states have return successors, (5530), 5513 states have call predecessors, (5530), 5530 states have call successors, (5530) [2021-11-17 03:30:22,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29856 states to 29856 states and 43345 transitions. [2021-11-17 03:30:22,036 INFO L78 Accepts]: Start accepts. Automaton has 29856 states and 43345 transitions. Word has length 177 [2021-11-17 03:30:22,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:30:22,036 INFO L470 AbstractCegarLoop]: Abstraction has 29856 states and 43345 transitions. [2021-11-17 03:30:22,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:30:22,036 INFO L276 IsEmpty]: Start isEmpty. Operand 29856 states and 43345 transitions. [2021-11-17 03:30:22,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-17 03:30:22,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:30:22,051 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-17 03:30:22,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-17 03:30:22,051 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:30:22,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:30:22,052 INFO L85 PathProgramCache]: Analyzing trace with hash 112076445, now seen corresponding path program 1 times [2021-11-17 03:30:22,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:30:22,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532874029] [2021-11-17 03:30:22,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:30:22,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:30:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:30:22,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:30:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:30:22,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 03:30:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:30:22,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:30:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:30:22,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 03:30:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:30:22,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:30:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:30:22,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 03:30:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:30:22,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:30:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:30:22,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:30:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:30:22,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 03:30:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:30:22,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:30:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:30:22,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:30:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:30:22,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 03:30:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:30:22,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:30:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:30:22,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:30:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:30:22,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:30:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:30:22,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-11-17 03:30:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:30:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-17 03:30:22,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:30:22,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532874029] [2021-11-17 03:30:22,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532874029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:30:22,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:30:22,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:30:22,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712677831] [2021-11-17 03:30:22,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:30:22,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:30:22,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:30:22,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:30:22,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:30:22,232 INFO L87 Difference]: Start difference. First operand 29856 states and 43345 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:30:24,263 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:26,321 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:28,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:30,442 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:37,461 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:39,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:41,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:43,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:45,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:47,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:49,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:51,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:54,010 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:56,696 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:30:58,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:31:01,367 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:31:03,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:31:05,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:31:07,479 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:31:11,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:31:11,136 INFO L93 Difference]: Finished difference Result 62429 states and 91988 transitions. [2021-11-17 03:31:11,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 03:31:11,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 182 [2021-11-17 03:31:11,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:31:11,297 INFO L225 Difference]: With dead ends: 62429 [2021-11-17 03:31:11,297 INFO L226 Difference]: Without dead ends: 36152 [2021-11-17 03:31:11,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-17 03:31:11,364 INFO L933 BasicCegarLoop]: 1638 mSDtfsCounter, 1488 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 3586 mSolverCounterSat, 994 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 2960 SdHoareTripleChecker+Invalid, 4599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 994 IncrementalHoareTripleChecker+Valid, 3586 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.5s IncrementalHoareTripleChecker+Time [2021-11-17 03:31:11,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1597 Valid, 2960 Invalid, 4599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [994 Valid, 3586 Invalid, 19 Unknown, 0 Unchecked, 47.5s Time] [2021-11-17 03:31:11,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36152 states. [2021-11-17 03:31:12,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36152 to 33324. [2021-11-17 03:31:12,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33324 states, 25904 states have (on average 1.391136504014824) internal successors, (36036), 26151 states have internal predecessors, (36036), 6179 states have call successors, (6179), 1251 states have call predecessors, (6179), 1240 states have return successors, (6166), 6149 states have call predecessors, (6166), 6166 states have call successors, (6166) [2021-11-17 03:31:12,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33324 states to 33324 states and 48381 transitions. [2021-11-17 03:31:12,793 INFO L78 Accepts]: Start accepts. Automaton has 33324 states and 48381 transitions. Word has length 182 [2021-11-17 03:31:12,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:31:12,794 INFO L470 AbstractCegarLoop]: Abstraction has 33324 states and 48381 transitions. [2021-11-17 03:31:12,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:31:12,794 INFO L276 IsEmpty]: Start isEmpty. Operand 33324 states and 48381 transitions. [2021-11-17 03:31:12,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-17 03:31:12,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:31:12,806 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-17 03:31:12,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-17 03:31:12,807 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:31:12,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:31:12,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1761369724, now seen corresponding path program 1 times [2021-11-17 03:31:12,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:31:12,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369147604] [2021-11-17 03:31:12,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:31:12,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:31:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:12,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:31:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:12,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 03:31:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:12,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:31:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:12,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 03:31:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:12,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:31:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:12,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 03:31:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:12,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:31:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:12,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:31:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:12,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 03:31:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:12,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:31:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:12,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:31:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:12,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-17 03:31:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:12,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:31:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:12,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:31:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:12,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:31:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:12,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-17 03:31:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:13,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:31:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:13,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-11-17 03:31:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:13,005 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-17 03:31:13,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:31:13,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369147604] [2021-11-17 03:31:13,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369147604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:31:13,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:31:13,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:31:13,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994736210] [2021-11-17 03:31:13,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:31:13,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:31:13,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:31:13,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:31:13,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:31:13,009 INFO L87 Difference]: Start difference. First operand 33324 states and 48381 transitions. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-17 03:31:15,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:31:17,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:31:19,735 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:31:24,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:31:26,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:31:28,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:31:29,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:31:31,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:31:33,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:31:36,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:31:36,710 INFO L93 Difference]: Finished difference Result 73317 states and 107271 transitions. [2021-11-17 03:31:36,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-17 03:31:36,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 182 [2021-11-17 03:31:36,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:31:36,836 INFO L225 Difference]: With dead ends: 73317 [2021-11-17 03:31:36,836 INFO L226 Difference]: Without dead ends: 39996 [2021-11-17 03:31:36,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-17 03:31:36,899 INFO L933 BasicCegarLoop]: 1032 mSDtfsCounter, 1852 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 1206 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 2144 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1206 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2021-11-17 03:31:36,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1873 Valid, 2144 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1206 Valid, 1563 Invalid, 7 Unknown, 0 Unchecked, 22.2s Time] [2021-11-17 03:31:36,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39996 states. [2021-11-17 03:31:38,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39996 to 37087. [2021-11-17 03:31:38,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37087 states, 29256 states have (on average 1.3879887886245557) internal successors, (40607), 29516 states have internal predecessors, (40607), 6398 states have call successors, (6398), 1449 states have call predecessors, (6398), 1432 states have return successors, (6379), 6349 states have call predecessors, (6379), 6379 states have call successors, (6379) [2021-11-17 03:31:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37087 states to 37087 states and 53384 transitions. [2021-11-17 03:31:38,334 INFO L78 Accepts]: Start accepts. Automaton has 37087 states and 53384 transitions. Word has length 182 [2021-11-17 03:31:38,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:31:38,334 INFO L470 AbstractCegarLoop]: Abstraction has 37087 states and 53384 transitions. [2021-11-17 03:31:38,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-17 03:31:38,334 INFO L276 IsEmpty]: Start isEmpty. Operand 37087 states and 53384 transitions. [2021-11-17 03:31:38,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-17 03:31:38,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:31:38,351 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-17 03:31:38,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-17 03:31:38,352 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:31:38,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:31:38,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1867857801, now seen corresponding path program 1 times [2021-11-17 03:31:38,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:31:38,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875575638] [2021-11-17 03:31:38,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:31:38,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:31:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:38,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:31:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:38,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 03:31:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:38,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:31:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:38,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 03:31:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:38,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:31:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:38,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 03:31:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:38,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:31:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:38,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:31:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:38,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 03:31:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:38,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:31:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:38,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:31:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:38,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-17 03:31:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:38,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:31:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:38,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:31:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:38,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:31:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:38,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-11-17 03:31:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:38,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:31:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:38,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 03:31:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-17 03:31:38,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:31:38,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875575638] [2021-11-17 03:31:38,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875575638] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 03:31:38,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415011980] [2021-11-17 03:31:38,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:31:38,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 03:31:38,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 03:31:38,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 03:31:38,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-17 03:31:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:39,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 3462 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 03:31:39,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 03:31:39,597 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-17 03:31:39,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 03:31:39,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415011980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:31:39,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 03:31:39,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 10 [2021-11-17 03:31:39,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34460926] [2021-11-17 03:31:39,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:31:39,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 03:31:39,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:31:39,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 03:31:39,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-17 03:31:39,599 INFO L87 Difference]: Start difference. First operand 37087 states and 53384 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-17 03:31:41,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:31:41,330 INFO L93 Difference]: Finished difference Result 93938 states and 135722 transitions. [2021-11-17 03:31:41,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 03:31:41,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 184 [2021-11-17 03:31:41,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:31:41,530 INFO L225 Difference]: With dead ends: 93938 [2021-11-17 03:31:41,530 INFO L226 Difference]: Without dead ends: 56854 [2021-11-17 03:31:41,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-17 03:31:41,611 INFO L933 BasicCegarLoop]: 1197 mSDtfsCounter, 917 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 2247 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 03:31:41,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 2247 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 03:31:41,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56854 states. [2021-11-17 03:31:43,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56854 to 56819. [2021-11-17 03:31:43,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56819 states, 45010 states have (on average 1.3930904243501445) internal successors, (62703), 45419 states have internal predecessors, (62703), 9768 states have call successors, (9768), 2066 states have call predecessors, (9768), 2040 states have return successors, (9740), 9697 states have call predecessors, (9740), 9740 states have call successors, (9740) [2021-11-17 03:31:43,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56819 states to 56819 states and 82211 transitions. [2021-11-17 03:31:43,699 INFO L78 Accepts]: Start accepts. Automaton has 56819 states and 82211 transitions. Word has length 184 [2021-11-17 03:31:43,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:31:43,699 INFO L470 AbstractCegarLoop]: Abstraction has 56819 states and 82211 transitions. [2021-11-17 03:31:43,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-17 03:31:43,699 INFO L276 IsEmpty]: Start isEmpty. Operand 56819 states and 82211 transitions. [2021-11-17 03:31:43,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-17 03:31:43,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:31:43,710 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-17 03:31:43,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-17 03:31:43,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 03:31:43,931 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:31:43,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:31:43,931 INFO L85 PathProgramCache]: Analyzing trace with hash -534054421, now seen corresponding path program 1 times [2021-11-17 03:31:43,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:31:43,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373271798] [2021-11-17 03:31:43,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:31:43,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:31:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:44,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:31:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:44,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 03:31:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:44,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:31:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:44,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 03:31:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:44,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:31:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:44,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 03:31:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:44,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:31:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:44,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:31:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:44,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 03:31:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:44,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:31:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:44,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:31:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:44,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 03:31:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:44,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:31:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:44,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:31:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:44,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:31:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:44,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-17 03:31:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:31:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-17 03:31:44,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:31:44,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373271798] [2021-11-17 03:31:44,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373271798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:31:44,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:31:44,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:31:44,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865244285] [2021-11-17 03:31:44,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:31:44,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:31:44,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:31:44,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:31:44,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:31:44,080 INFO L87 Difference]: Start difference. First operand 56819 states and 82211 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:31:47,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:31:49,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:31:54,817 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:31:56,415 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:31:58,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:32:00,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:32:02,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:32:04,842 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:32:06,882 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:32:09,656 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:32:11,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:32:18,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:32:21,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:32:25,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:32:25,951 INFO L93 Difference]: Finished difference Result 122073 states and 179136 transitions. [2021-11-17 03:32:25,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 03:32:25,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 183 [2021-11-17 03:32:25,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:32:26,218 INFO L225 Difference]: With dead ends: 122073 [2021-11-17 03:32:26,218 INFO L226 Difference]: Without dead ends: 67947 [2021-11-17 03:32:26,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-17 03:32:26,466 INFO L933 BasicCegarLoop]: 1670 mSDtfsCounter, 1369 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 4689 mSolverCounterSat, 821 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 3325 SdHoareTripleChecker+Invalid, 5522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 821 IncrementalHoareTripleChecker+Valid, 4689 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.6s IncrementalHoareTripleChecker+Time [2021-11-17 03:32:26,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1478 Valid, 3325 Invalid, 5522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [821 Valid, 4689 Invalid, 12 Unknown, 0 Unchecked, 39.6s Time] [2021-11-17 03:32:26,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67947 states. [2021-11-17 03:32:28,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67947 to 62925. [2021-11-17 03:32:28,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62925 states, 49864 states have (on average 1.3928084389539548) internal successors, (69451), 50313 states have internal predecessors, (69451), 10810 states have call successors, (10810), 2276 states have call predecessors, (10810), 2250 states have return successors, (10782), 10739 states have call predecessors, (10782), 10782 states have call successors, (10782) [2021-11-17 03:32:28,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62925 states to 62925 states and 91043 transitions. [2021-11-17 03:32:28,734 INFO L78 Accepts]: Start accepts. Automaton has 62925 states and 91043 transitions. Word has length 183 [2021-11-17 03:32:28,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:32:28,734 INFO L470 AbstractCegarLoop]: Abstraction has 62925 states and 91043 transitions. [2021-11-17 03:32:28,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:32:28,735 INFO L276 IsEmpty]: Start isEmpty. Operand 62925 states and 91043 transitions. [2021-11-17 03:32:28,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-17 03:32:28,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:32:28,747 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-17 03:32:28,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-17 03:32:28,747 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:32:28,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:32:28,748 INFO L85 PathProgramCache]: Analyzing trace with hash -783704340, now seen corresponding path program 1 times [2021-11-17 03:32:28,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:32:28,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617002371] [2021-11-17 03:32:28,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:32:28,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:32:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:32:28,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:32:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:32:28,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 03:32:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:32:28,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:32:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:32:28,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 03:32:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:32:28,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:32:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:32:28,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 03:32:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:32:28,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:32:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:32:28,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:32:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:32:28,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 03:32:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:32:28,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:32:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:32:28,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:32:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:32:28,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-17 03:32:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:32:28,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:32:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:32:28,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:32:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:32:28,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:32:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:32:28,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 03:32:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:32:28,881 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-17 03:32:28,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:32:28,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617002371] [2021-11-17 03:32:28,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617002371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:32:28,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:32:28,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:32:28,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135188211] [2021-11-17 03:32:28,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:32:28,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:32:28,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:32:28,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:32:28,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:32:28,883 INFO L87 Difference]: Start difference. First operand 62925 states and 91043 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:32:30,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:32:32,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:32:38,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:32:40,522 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:32:42,556 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:32:44,873 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:32:46,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:32:48,939 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:32:50,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:32:53,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:32:55,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:00,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:02,328 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:07,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:33:07,144 INFO L93 Difference]: Finished difference Result 134775 states and 197710 transitions. [2021-11-17 03:33:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 03:33:07,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 186 [2021-11-17 03:33:07,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:33:07,451 INFO L225 Difference]: With dead ends: 134775 [2021-11-17 03:33:07,451 INFO L226 Difference]: Without dead ends: 74543 [2021-11-17 03:33:07,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-17 03:33:07,713 INFO L933 BasicCegarLoop]: 1654 mSDtfsCounter, 1570 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 3443 mSolverCounterSat, 1143 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 2972 SdHoareTripleChecker+Invalid, 4597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1143 IncrementalHoareTripleChecker+Valid, 3443 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.7s IncrementalHoareTripleChecker+Time [2021-11-17 03:33:07,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1679 Valid, 2972 Invalid, 4597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1143 Valid, 3443 Invalid, 11 Unknown, 0 Unchecked, 35.7s Time] [2021-11-17 03:33:07,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74543 states. [2021-11-17 03:33:09,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74543 to 69031. [2021-11-17 03:33:09,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69031 states, 54718 states have (on average 1.3925764830585914) internal successors, (76199), 55207 states have internal predecessors, (76199), 11852 states have call successors, (11852), 2486 states have call predecessors, (11852), 2460 states have return successors, (11824), 11781 states have call predecessors, (11824), 11824 states have call successors, (11824) [2021-11-17 03:33:10,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69031 states to 69031 states and 99875 transitions. [2021-11-17 03:33:10,194 INFO L78 Accepts]: Start accepts. Automaton has 69031 states and 99875 transitions. Word has length 186 [2021-11-17 03:33:10,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:33:10,195 INFO L470 AbstractCegarLoop]: Abstraction has 69031 states and 99875 transitions. [2021-11-17 03:33:10,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:33:10,195 INFO L276 IsEmpty]: Start isEmpty. Operand 69031 states and 99875 transitions. [2021-11-17 03:33:10,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-17 03:33:10,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:33:10,206 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-17 03:33:10,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-17 03:33:10,206 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:33:10,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:33:10,206 INFO L85 PathProgramCache]: Analyzing trace with hash -778309093, now seen corresponding path program 1 times [2021-11-17 03:33:10,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:33:10,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707545626] [2021-11-17 03:33:10,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:33:10,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:33:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:33:10,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:33:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:33:10,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 03:33:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:33:10,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:33:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:33:10,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 03:33:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:33:10,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:33:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:33:10,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 03:33:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:33:10,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:33:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:33:10,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:33:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:33:10,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 03:33:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:33:10,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:33:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:33:10,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:33:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:33:10,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-17 03:33:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:33:10,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:33:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:33:10,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:33:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:33:10,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:33:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:33:10,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 03:33:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:33:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-17 03:33:10,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:33:10,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707545626] [2021-11-17 03:33:10,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707545626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:33:10,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:33:10,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:33:10,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353627318] [2021-11-17 03:33:10,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:33:10,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:33:10,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:33:10,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:33:10,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:33:10,530 INFO L87 Difference]: Start difference. First operand 69031 states and 99875 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:33:12,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:14,626 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:17,255 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:21,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:23,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:25,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:27,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:29,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:31,570 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:33,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:35,652 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:37,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:43,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:45,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:48,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:50,097 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:52,137 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:54,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:33:58,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:33:58,594 INFO L93 Difference]: Finished difference Result 147477 states and 216284 transitions. [2021-11-17 03:33:58,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 03:33:58,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 185 [2021-11-17 03:33:58,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:33:58,919 INFO L225 Difference]: With dead ends: 147477 [2021-11-17 03:33:58,919 INFO L226 Difference]: Without dead ends: 81139 [2021-11-17 03:33:59,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-17 03:33:59,064 INFO L933 BasicCegarLoop]: 1662 mSDtfsCounter, 1566 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 3464 mSolverCounterSat, 1139 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 4620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1139 IncrementalHoareTripleChecker+Valid, 3464 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.2s IncrementalHoareTripleChecker+Time [2021-11-17 03:33:59,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1672 Valid, 2984 Invalid, 4620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1139 Valid, 3464 Invalid, 17 Unknown, 0 Unchecked, 45.2s Time] [2021-11-17 03:33:59,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81139 states. [2021-11-17 03:34:01,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81139 to 75137. [2021-11-17 03:34:01,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75137 states, 59572 states have (on average 1.392382327267844) internal successors, (82947), 60101 states have internal predecessors, (82947), 12894 states have call successors, (12894), 2696 states have call predecessors, (12894), 2670 states have return successors, (12866), 12823 states have call predecessors, (12866), 12866 states have call successors, (12866) [2021-11-17 03:34:01,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75137 states to 75137 states and 108707 transitions. [2021-11-17 03:34:02,000 INFO L78 Accepts]: Start accepts. Automaton has 75137 states and 108707 transitions. Word has length 185 [2021-11-17 03:34:02,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:34:02,001 INFO L470 AbstractCegarLoop]: Abstraction has 75137 states and 108707 transitions. [2021-11-17 03:34:02,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:34:02,001 INFO L276 IsEmpty]: Start isEmpty. Operand 75137 states and 108707 transitions. [2021-11-17 03:34:02,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-17 03:34:02,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:34:02,013 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-17 03:34:02,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-17 03:34:02,013 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:34:02,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:34:02,013 INFO L85 PathProgramCache]: Analyzing trace with hash -775377285, now seen corresponding path program 1 times [2021-11-17 03:34:02,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:34:02,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052378774] [2021-11-17 03:34:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:34:02,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:34:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:34:02,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:34:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:34:02,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 03:34:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:34:02,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:34:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:34:02,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 03:34:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:34:02,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:34:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:34:02,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 03:34:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:34:02,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:34:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:34:02,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:34:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:34:02,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 03:34:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:34:02,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:34:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:34:02,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:34:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:34:02,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-17 03:34:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:34:02,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:34:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:34:02,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:34:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:34:02,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:34:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:34:02,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-17 03:34:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:34:02,147 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-17 03:34:02,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:34:02,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052378774] [2021-11-17 03:34:02,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052378774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:34:02,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:34:02,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:34:02,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383546831] [2021-11-17 03:34:02,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:34:02,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:34:02,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:34:02,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:34:02,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:34:02,148 INFO L87 Difference]: Start difference. First operand 75137 states and 108707 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:34:04,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:06,238 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:08,317 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:10,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:12,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:18,140 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:20,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:22,964 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:25,282 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:27,318 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:29,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:31,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:33,438 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:35,473 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:37,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:39,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:45,868 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:47,900 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:49,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:52,786 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:54,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:56,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:34:58,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:35:00,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:35:02,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:35:08,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:35:08,142 INFO L93 Difference]: Finished difference Result 160179 states and 234858 transitions. [2021-11-17 03:35:08,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 03:35:08,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 189 [2021-11-17 03:35:08,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:35:08,483 INFO L225 Difference]: With dead ends: 160179 [2021-11-17 03:35:08,483 INFO L226 Difference]: Without dead ends: 87735 [2021-11-17 03:35:08,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-17 03:35:08,829 INFO L933 BasicCegarLoop]: 1657 mSDtfsCounter, 1380 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 4680 mSolverCounterSat, 820 mSolverCounterUnsat, 24 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 3313 SdHoareTripleChecker+Invalid, 5524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 820 IncrementalHoareTripleChecker+Valid, 4680 IncrementalHoareTripleChecker+Invalid, 24 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.8s IncrementalHoareTripleChecker+Time [2021-11-17 03:35:08,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 3313 Invalid, 5524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [820 Valid, 4680 Invalid, 24 Unknown, 0 Unchecked, 62.8s Time] [2021-11-17 03:35:08,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87735 states. [2021-11-17 03:35:11,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87735 to 81243. [2021-11-17 03:35:11,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81243 states, 64426 states have (on average 1.392217427746562) internal successors, (89695), 64995 states have internal predecessors, (89695), 13936 states have call successors, (13936), 2906 states have call predecessors, (13936), 2880 states have return successors, (13908), 13865 states have call predecessors, (13908), 13908 states have call successors, (13908) [2021-11-17 03:35:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81243 states to 81243 states and 117539 transitions. [2021-11-17 03:35:11,875 INFO L78 Accepts]: Start accepts. Automaton has 81243 states and 117539 transitions. Word has length 189 [2021-11-17 03:35:11,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:35:11,875 INFO L470 AbstractCegarLoop]: Abstraction has 81243 states and 117539 transitions. [2021-11-17 03:35:11,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:35:11,875 INFO L276 IsEmpty]: Start isEmpty. Operand 81243 states and 117539 transitions. [2021-11-17 03:35:11,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-17 03:35:11,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:35:11,890 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-17 03:35:11,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-17 03:35:11,890 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:35:11,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:35:11,890 INFO L85 PathProgramCache]: Analyzing trace with hash -69958801, now seen corresponding path program 1 times [2021-11-17 03:35:11,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:35:11,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060405511] [2021-11-17 03:35:11,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:35:11,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:35:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:35:11,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 03:35:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:35:11,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 03:35:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:35:11,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:35:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:35:11,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 03:35:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:35:11,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:35:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:35:12,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 03:35:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:35:12,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:35:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:35:12,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:35:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:35:12,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 03:35:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:35:12,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:35:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:35:12,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:35:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:35:12,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-17 03:35:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:35:12,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:35:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:35:12,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:35:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:35:12,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:35:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:35:12,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-11-17 03:35:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:35:12,037 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-17 03:35:12,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:35:12,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060405511] [2021-11-17 03:35:12,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060405511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:35:12,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:35:12,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:35:12,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066932324] [2021-11-17 03:35:12,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:35:12,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:35:12,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:35:12,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:35:12,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:35:12,039 INFO L87 Difference]: Start difference. First operand 81243 states and 117539 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:35:14,070 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15