./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1ad6d1ed8310d8e3264189ac87472d58c77647a0c63d75779b5974e889987542 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 23:10:19,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:10:19,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:10:19,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:10:19,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:10:19,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:10:19,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:10:19,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:10:19,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:10:19,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:10:19,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:10:19,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:10:19,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:10:19,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:10:19,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:10:19,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:10:19,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:10:19,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:10:19,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:10:19,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:10:19,080 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:10:19,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:10:19,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:10:19,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:10:19,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:10:19,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:10:19,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:10:19,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:10:19,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:10:19,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:10:19,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:10:19,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:10:19,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:10:19,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:10:19,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:10:19,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:10:19,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:10:19,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:10:19,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:10:19,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:10:19,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:10:19,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:10:19,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 23:10:19,136 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:10:19,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:10:19,137 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:10:19,137 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:10:19,138 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:10:19,138 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:10:19,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:10:19,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:10:19,139 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:10:19,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:10:19,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 23:10:19,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:10:19,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:10:19,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:10:19,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:10:19,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:10:19,141 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:10:19,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:10:19,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:10:19,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:10:19,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:10:19,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:10:19,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:10:19,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:10:19,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:10:19,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 23:10:19,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 23:10:19,144 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:10:19,144 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:10:19,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:10:19,145 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ad6d1ed8310d8e3264189ac87472d58c77647a0c63d75779b5974e889987542 [2022-07-19 23:10:19,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:10:19,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:10:19,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:10:19,452 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:10:19,453 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:10:19,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2022-07-19 23:10:19,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2104ef02c/fde90ec527da418aae3d49846d099e49/FLAG2b8fd6c3e [2022-07-19 23:10:20,160 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:10:20,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2022-07-19 23:10:20,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2104ef02c/fde90ec527da418aae3d49846d099e49/FLAG2b8fd6c3e [2022-07-19 23:10:20,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2104ef02c/fde90ec527da418aae3d49846d099e49 [2022-07-19 23:10:20,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:10:20,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:10:20,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:10:20,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:10:20,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:10:20,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:10:20" (1/1) ... [2022-07-19 23:10:20,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f532d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:20, skipping insertion in model container [2022-07-19 23:10:20,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:10:20" (1/1) ... [2022-07-19 23:10:20,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:10:20,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:10:21,268 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i[168201,168214] [2022-07-19 23:10:21,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:10:21,411 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:10:21,622 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i[168201,168214] [2022-07-19 23:10:21,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:10:21,856 INFO L208 MainTranslator]: Completed translation [2022-07-19 23:10:21,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:21 WrapperNode [2022-07-19 23:10:21,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 23:10:21,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 23:10:21,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 23:10:21,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 23:10:21,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:21" (1/1) ... [2022-07-19 23:10:21,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:21" (1/1) ... [2022-07-19 23:10:22,132 INFO L137 Inliner]: procedures = 115, calls = 2009, calls flagged for inlining = 45, calls inlined = 37, statements flattened = 5217 [2022-07-19 23:10:22,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 23:10:22,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 23:10:22,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 23:10:22,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 23:10:22,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:21" (1/1) ... [2022-07-19 23:10:22,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:21" (1/1) ... [2022-07-19 23:10:22,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:21" (1/1) ... [2022-07-19 23:10:22,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:21" (1/1) ... [2022-07-19 23:10:22,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:21" (1/1) ... [2022-07-19 23:10:22,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:21" (1/1) ... [2022-07-19 23:10:22,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:21" (1/1) ... [2022-07-19 23:10:22,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 23:10:22,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 23:10:22,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 23:10:22,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 23:10:22,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:21" (1/1) ... [2022-07-19 23:10:22,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:10:22,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:10:22,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 23:10:22,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 23:10:22,487 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_set_limit [2022-07-19 23:10:22,488 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_set_limit [2022-07-19 23:10:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 23:10:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-07-19 23:10:22,488 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-07-19 23:10:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-07-19 23:10:22,488 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-07-19 23:10:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_limit [2022-07-19 23:10:22,489 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_limit [2022-07-19 23:10:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_update_device [2022-07-19 23:10:22,489 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_update_device [2022-07-19 23:10:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_input [2022-07-19 23:10:22,489 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_input [2022-07-19 23:10:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_read_adc [2022-07-19 23:10:22,490 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_read_adc [2022-07-19 23:10:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 23:10:22,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 23:10:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_max16065_data [2022-07-19 23:10:22,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_max16065_data [2022-07-19 23:10:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_alarm [2022-07-19 23:10:22,491 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_alarm [2022-07-19 23:10:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure LIMIT_TO_MV [2022-07-19 23:10:22,491 INFO L138 BoogieDeclarations]: Found implementation of procedure LIMIT_TO_MV [2022-07-19 23:10:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 23:10:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-19 23:10:22,491 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-19 23:10:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 23:10:22,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 23:10:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 23:10:22,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 23:10:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 23:10:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-19 23:10:22,492 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-19 23:10:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 23:10:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 23:10:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 23:10:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2022-07-19 23:10:22,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2022-07-19 23:10:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-07-19 23:10:22,493 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-07-19 23:10:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 23:10:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 23:10:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 23:10:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_cleanup [2022-07-19 23:10:22,494 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_cleanup [2022-07-19 23:10:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 23:10:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-07-19 23:10:22,495 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-07-19 23:10:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 23:10:22,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 23:10:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_file [2022-07-19 23:10:22,495 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_file [2022-07-19 23:10:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-19 23:10:22,496 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-19 23:10:23,052 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 23:10:23,055 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 23:10:27,245 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 23:10:27,269 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 23:10:27,270 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 23:10:27,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:10:27 BoogieIcfgContainer [2022-07-19 23:10:27,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 23:10:27,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 23:10:27,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 23:10:27,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 23:10:27,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:10:20" (1/3) ... [2022-07-19 23:10:27,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c0f8ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:10:27, skipping insertion in model container [2022-07-19 23:10:27,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:21" (2/3) ... [2022-07-19 23:10:27,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c0f8ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:10:27, skipping insertion in model container [2022-07-19 23:10:27,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:10:27" (3/3) ... [2022-07-19 23:10:27,286 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2022-07-19 23:10:27,300 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 23:10:27,301 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 23:10:27,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 23:10:27,408 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@485b4973, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@69e93e61 [2022-07-19 23:10:27,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 23:10:27,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 1101 states, 896 states have (on average 1.6049107142857142) internal successors, (1438), 903 states have internal predecessors, (1438), 182 states have call successors, (182), 21 states have call predecessors, (182), 21 states have return successors, (182), 182 states have call predecessors, (182), 182 states have call successors, (182) [2022-07-19 23:10:27,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-19 23:10:27,432 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:10:27,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:10:27,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:10:27,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:10:27,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2019820294, now seen corresponding path program 1 times [2022-07-19 23:10:27,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:10:27,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113577303] [2022-07-19 23:10:27,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:10:27,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:10:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:28,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 23:10:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:28,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:10:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:28,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:10:28,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:10:28,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113577303] [2022-07-19 23:10:28,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113577303] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:10:28,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:10:28,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:10:28,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988348918] [2022-07-19 23:10:28,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:10:28,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:10:28,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:10:28,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:10:28,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:10:28,453 INFO L87 Difference]: Start difference. First operand has 1101 states, 896 states have (on average 1.6049107142857142) internal successors, (1438), 903 states have internal predecessors, (1438), 182 states have call successors, (182), 21 states have call predecessors, (182), 21 states have return successors, (182), 182 states have call predecessors, (182), 182 states have call successors, (182) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 23:10:30,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:10:30,139 INFO L93 Difference]: Finished difference Result 3401 states and 5976 transitions. [2022-07-19 23:10:30,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:10:30,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-07-19 23:10:30,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:10:30,222 INFO L225 Difference]: With dead ends: 3401 [2022-07-19 23:10:30,223 INFO L226 Difference]: Without dead ends: 2295 [2022-07-19 23:10:30,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:10:30,250 INFO L413 NwaCegarLoop]: 2029 mSDtfsCounter, 1947 mSDsluCounter, 3286 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 5315 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:10:30,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2053 Valid, 5315 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 23:10:30,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2022-07-19 23:10:30,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 2166. [2022-07-19 23:10:30,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2166 states, 1768 states have (on average 1.6057692307692308) internal successors, (2839), 1773 states have internal predecessors, (2839), 357 states have call successors, (357), 41 states have call predecessors, (357), 40 states have return successors, (351), 351 states have call predecessors, (351), 351 states have call successors, (351) [2022-07-19 23:10:30,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 3547 transitions. [2022-07-19 23:10:30,476 INFO L78 Accepts]: Start accepts. Automaton has 2166 states and 3547 transitions. Word has length 33 [2022-07-19 23:10:30,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:10:30,479 INFO L495 AbstractCegarLoop]: Abstraction has 2166 states and 3547 transitions. [2022-07-19 23:10:30,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 23:10:30,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2166 states and 3547 transitions. [2022-07-19 23:10:30,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-19 23:10:30,487 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:10:30,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:10:30,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 23:10:30,488 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:10:30,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:10:30,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1851303095, now seen corresponding path program 1 times [2022-07-19 23:10:30,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:10:30,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804310283] [2022-07-19 23:10:30,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:10:30,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:10:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:30,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:10:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:30,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:10:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:30,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:10:30,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:10:30,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804310283] [2022-07-19 23:10:30,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804310283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:10:30,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:10:30,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:10:30,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549172346] [2022-07-19 23:10:30,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:10:30,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:10:30,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:10:30,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:10:30,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:10:30,854 INFO L87 Difference]: Start difference. First operand 2166 states and 3547 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 23:10:32,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:10:32,204 INFO L93 Difference]: Finished difference Result 6708 states and 11239 transitions. [2022-07-19 23:10:32,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:10:32,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-07-19 23:10:32,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:10:32,238 INFO L225 Difference]: With dead ends: 6708 [2022-07-19 23:10:32,238 INFO L226 Difference]: Without dead ends: 4545 [2022-07-19 23:10:32,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:10:32,249 INFO L413 NwaCegarLoop]: 2059 mSDtfsCounter, 1944 mSDsluCounter, 3273 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2016 SdHoareTripleChecker+Valid, 5332 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:10:32,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2016 Valid, 5332 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 23:10:32,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2022-07-19 23:10:32,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 4302. [2022-07-19 23:10:32,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 3515 states have (on average 1.6062588904694168) internal successors, (5646), 3520 states have internal predecessors, (5646), 706 states have call successors, (706), 81 states have call predecessors, (706), 80 states have return successors, (700), 700 states have call predecessors, (700), 700 states have call successors, (700) [2022-07-19 23:10:32,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 7052 transitions. [2022-07-19 23:10:32,423 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 7052 transitions. Word has length 34 [2022-07-19 23:10:32,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:10:32,423 INFO L495 AbstractCegarLoop]: Abstraction has 4302 states and 7052 transitions. [2022-07-19 23:10:32,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 23:10:32,424 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 7052 transitions. [2022-07-19 23:10:32,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-19 23:10:32,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:10:32,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:10:32,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 23:10:32,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:10:32,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:10:32,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1553931897, now seen corresponding path program 1 times [2022-07-19 23:10:32,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:10:32,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088924348] [2022-07-19 23:10:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:10:32,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:10:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:32,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:10:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:32,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:10:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:32,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:10:32,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:10:32,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088924348] [2022-07-19 23:10:32,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088924348] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:10:32,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:10:32,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:10:32,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217792793] [2022-07-19 23:10:32,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:10:32,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:10:32,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:10:32,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:10:32,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:10:32,769 INFO L87 Difference]: Start difference. First operand 4302 states and 7052 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 23:10:34,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:10:34,343 INFO L93 Difference]: Finished difference Result 13332 states and 22354 transitions. [2022-07-19 23:10:34,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:10:34,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2022-07-19 23:10:34,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:10:34,411 INFO L225 Difference]: With dead ends: 13332 [2022-07-19 23:10:34,412 INFO L226 Difference]: Without dead ends: 9033 [2022-07-19 23:10:34,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:10:34,441 INFO L413 NwaCegarLoop]: 2016 mSDtfsCounter, 1939 mSDsluCounter, 3217 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 5233 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:10:34,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2046 Valid, 5233 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 23:10:34,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9033 states. [2022-07-19 23:10:34,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9033 to 8562. [2022-07-19 23:10:34,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8562 states, 6999 states have (on average 1.6062294613516217) internal successors, (11242), 7004 states have internal predecessors, (11242), 1402 states have call successors, (1402), 161 states have call predecessors, (1402), 160 states have return successors, (1396), 1396 states have call predecessors, (1396), 1396 states have call successors, (1396) [2022-07-19 23:10:34,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8562 states to 8562 states and 14040 transitions. [2022-07-19 23:10:34,911 INFO L78 Accepts]: Start accepts. Automaton has 8562 states and 14040 transitions. Word has length 37 [2022-07-19 23:10:34,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:10:34,912 INFO L495 AbstractCegarLoop]: Abstraction has 8562 states and 14040 transitions. [2022-07-19 23:10:34,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 23:10:34,912 INFO L276 IsEmpty]: Start isEmpty. Operand 8562 states and 14040 transitions. [2022-07-19 23:10:34,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-19 23:10:34,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:10:34,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:10:34,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 23:10:34,915 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:10:34,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:10:34,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1378079213, now seen corresponding path program 1 times [2022-07-19 23:10:34,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:10:34,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172433539] [2022-07-19 23:10:34,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:10:34,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:10:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:35,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 23:10:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:35,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:10:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:10:35,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:10:35,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172433539] [2022-07-19 23:10:35,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172433539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:10:35,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:10:35,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:10:35,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924852435] [2022-07-19 23:10:35,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:10:35,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:10:35,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:10:35,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:10:35,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:10:35,310 INFO L87 Difference]: Start difference. First operand 8562 states and 14040 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 23:10:36,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:10:36,877 INFO L93 Difference]: Finished difference Result 26544 states and 44514 transitions. [2022-07-19 23:10:36,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:10:36,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-07-19 23:10:36,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:10:37,016 INFO L225 Difference]: With dead ends: 26544 [2022-07-19 23:10:37,016 INFO L226 Difference]: Without dead ends: 17985 [2022-07-19 23:10:37,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:10:37,083 INFO L413 NwaCegarLoop]: 2139 mSDtfsCounter, 1933 mSDsluCounter, 3410 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 5549 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:10:37,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1993 Valid, 5549 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 23:10:37,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17985 states. [2022-07-19 23:10:37,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17985 to 17058. [2022-07-19 23:10:37,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17058 states, 13947 states have (on average 1.605936760593676) internal successors, (22398), 13952 states have internal predecessors, (22398), 2790 states have call successors, (2790), 321 states have call predecessors, (2790), 320 states have return successors, (2784), 2784 states have call predecessors, (2784), 2784 states have call successors, (2784) [2022-07-19 23:10:37,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17058 states to 17058 states and 27972 transitions. [2022-07-19 23:10:37,969 INFO L78 Accepts]: Start accepts. Automaton has 17058 states and 27972 transitions. Word has length 41 [2022-07-19 23:10:37,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:10:37,969 INFO L495 AbstractCegarLoop]: Abstraction has 17058 states and 27972 transitions. [2022-07-19 23:10:37,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 23:10:37,970 INFO L276 IsEmpty]: Start isEmpty. Operand 17058 states and 27972 transitions. [2022-07-19 23:10:37,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-19 23:10:37,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:10:37,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:10:37,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 23:10:37,974 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:10:37,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:10:37,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1020050902, now seen corresponding path program 1 times [2022-07-19 23:10:37,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:10:37,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731774368] [2022-07-19 23:10:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:10:37,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:10:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:38,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 23:10:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:38,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:10:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:38,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:10:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:10:38,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:10:38,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731774368] [2022-07-19 23:10:38,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731774368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:10:38,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:10:38,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:10:38,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946183124] [2022-07-19 23:10:38,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:10:38,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:10:38,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:10:38,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:10:38,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:10:38,327 INFO L87 Difference]: Start difference. First operand 17058 states and 27972 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 23:10:40,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:10:40,371 INFO L93 Difference]: Finished difference Result 52832 states and 88582 transitions. [2022-07-19 23:10:40,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:10:40,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 46 [2022-07-19 23:10:40,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:10:40,634 INFO L225 Difference]: With dead ends: 52832 [2022-07-19 23:10:40,634 INFO L226 Difference]: Without dead ends: 35777 [2022-07-19 23:10:40,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:10:40,722 INFO L413 NwaCegarLoop]: 2004 mSDtfsCounter, 1957 mSDsluCounter, 3232 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2085 SdHoareTripleChecker+Valid, 5236 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:10:40,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2085 Valid, 5236 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 23:10:40,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35777 states. [2022-07-19 23:10:42,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35777 to 33938. [2022-07-19 23:10:42,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33938 states, 27755 states have (on average 1.6054044316339398) internal successors, (44558), 27760 states have internal predecessors, (44558), 5542 states have call successors, (5542), 641 states have call predecessors, (5542), 640 states have return successors, (5536), 5536 states have call predecessors, (5536), 5536 states have call successors, (5536) [2022-07-19 23:10:42,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33938 states to 33938 states and 55636 transitions. [2022-07-19 23:10:42,500 INFO L78 Accepts]: Start accepts. Automaton has 33938 states and 55636 transitions. Word has length 46 [2022-07-19 23:10:42,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:10:42,500 INFO L495 AbstractCegarLoop]: Abstraction has 33938 states and 55636 transitions. [2022-07-19 23:10:42,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 23:10:42,501 INFO L276 IsEmpty]: Start isEmpty. Operand 33938 states and 55636 transitions. [2022-07-19 23:10:42,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-19 23:10:42,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:10:42,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:10:42,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 23:10:42,503 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:10:42,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:10:42,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1204380704, now seen corresponding path program 1 times [2022-07-19 23:10:42,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:10:42,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263086607] [2022-07-19 23:10:42,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:10:42,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:10:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:42,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 23:10:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:42,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:10:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:42,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:10:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:10:42,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:10:42,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263086607] [2022-07-19 23:10:42,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263086607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:10:42,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:10:42,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:10:42,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193222407] [2022-07-19 23:10:42,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:10:42,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:10:42,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:10:42,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:10:42,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:10:42,881 INFO L87 Difference]: Start difference. First operand 33938 states and 55636 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 23:10:45,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:10:45,759 INFO L93 Difference]: Finished difference Result 105136 states and 176214 transitions. [2022-07-19 23:10:45,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:10:45,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2022-07-19 23:10:45,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:10:46,293 INFO L225 Difference]: With dead ends: 105136 [2022-07-19 23:10:46,294 INFO L226 Difference]: Without dead ends: 71201 [2022-07-19 23:10:46,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:10:46,424 INFO L413 NwaCegarLoop]: 2116 mSDtfsCounter, 1938 mSDsluCounter, 3366 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 5482 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:10:46,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2046 Valid, 5482 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 23:10:46,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71201 states. [2022-07-19 23:10:49,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71201 to 67538. [2022-07-19 23:10:49,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67538 states, 55243 states have (on average 1.6048006082218562) internal successors, (88654), 55248 states have internal predecessors, (88654), 11014 states have call successors, (11014), 1281 states have call predecessors, (11014), 1280 states have return successors, (11008), 11008 states have call predecessors, (11008), 11008 states have call successors, (11008) [2022-07-19 23:10:49,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67538 states to 67538 states and 110676 transitions. [2022-07-19 23:10:49,745 INFO L78 Accepts]: Start accepts. Automaton has 67538 states and 110676 transitions. Word has length 41 [2022-07-19 23:10:49,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:10:49,745 INFO L495 AbstractCegarLoop]: Abstraction has 67538 states and 110676 transitions. [2022-07-19 23:10:49,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 23:10:49,746 INFO L276 IsEmpty]: Start isEmpty. Operand 67538 states and 110676 transitions. [2022-07-19 23:10:49,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-19 23:10:49,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:10:49,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:10:49,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 23:10:49,749 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:10:49,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:10:49,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1886641317, now seen corresponding path program 1 times [2022-07-19 23:10:49,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:10:49,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715728503] [2022-07-19 23:10:49,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:10:49,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:10:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:50,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:10:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:50,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:10:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:50,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 23:10:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:10:50,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:10:50,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715728503] [2022-07-19 23:10:50,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715728503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:10:50,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:10:50,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:10:50,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505504454] [2022-07-19 23:10:50,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:10:50,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:10:50,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:10:50,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:10:50,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:10:50,067 INFO L87 Difference]: Start difference. First operand 67538 states and 110676 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 23:10:53,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:10:53,929 INFO L93 Difference]: Finished difference Result 209264 states and 350582 transitions. [2022-07-19 23:10:53,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:10:53,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2022-07-19 23:10:53,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:10:54,981 INFO L225 Difference]: With dead ends: 209264 [2022-07-19 23:10:54,981 INFO L226 Difference]: Without dead ends: 141729 [2022-07-19 23:10:55,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:10:55,315 INFO L413 NwaCegarLoop]: 2054 mSDtfsCounter, 1958 mSDsluCounter, 3320 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2086 SdHoareTripleChecker+Valid, 5374 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:10:55,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2086 Valid, 5374 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 23:10:55,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141729 states. [2022-07-19 23:10:59,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141729 to 134418. [2022-07-19 23:10:59,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134418 states, 109963 states have (on average 1.6041577621563616) internal successors, (176398), 109968 states have internal predecessors, (176398), 21894 states have call successors, (21894), 2561 states have call predecessors, (21894), 2560 states have return successors, (21888), 21888 states have call predecessors, (21888), 21888 states have call successors, (21888) [2022-07-19 23:11:00,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134418 states to 134418 states and 220180 transitions. [2022-07-19 23:11:00,485 INFO L78 Accepts]: Start accepts. Automaton has 134418 states and 220180 transitions. Word has length 43 [2022-07-19 23:11:00,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:11:00,486 INFO L495 AbstractCegarLoop]: Abstraction has 134418 states and 220180 transitions. [2022-07-19 23:11:00,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 23:11:00,487 INFO L276 IsEmpty]: Start isEmpty. Operand 134418 states and 220180 transitions. [2022-07-19 23:11:00,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-19 23:11:00,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:11:00,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:11:00,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 23:11:00,489 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:11:00,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:11:00,490 INFO L85 PathProgramCache]: Analyzing trace with hash -259417434, now seen corresponding path program 1 times [2022-07-19 23:11:00,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:11:00,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821666579] [2022-07-19 23:11:00,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:11:00,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:11:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:00,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:11:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:00,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:11:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:00,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 23:11:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:00,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:11:00,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:11:00,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821666579] [2022-07-19 23:11:00,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821666579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:11:00,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:11:00,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:11:00,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161788907] [2022-07-19 23:11:00,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:11:00,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:11:00,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:11:00,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:11:00,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:11:00,799 INFO L87 Difference]: Start difference. First operand 134418 states and 220180 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 23:11:07,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:11:07,190 INFO L93 Difference]: Finished difference Result 416560 states and 697526 transitions. [2022-07-19 23:11:07,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:11:07,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 47 [2022-07-19 23:11:07,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:11:08,998 INFO L225 Difference]: With dead ends: 416560 [2022-07-19 23:11:08,998 INFO L226 Difference]: Without dead ends: 282145 [2022-07-19 23:11:09,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:11:09,441 INFO L413 NwaCegarLoop]: 2195 mSDtfsCounter, 1934 mSDsluCounter, 3445 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 5640 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:11:09,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1993 Valid, 5640 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 23:11:09,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282145 states. [2022-07-19 23:11:18,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282145 to 267538. [2022-07-19 23:11:18,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267538 states, 218891 states have (on average 1.6034921490604912) internal successors, (350990), 218896 states have internal predecessors, (350990), 43526 states have call successors, (43526), 5121 states have call predecessors, (43526), 5120 states have return successors, (43520), 43520 states have call predecessors, (43520), 43520 states have call successors, (43520) [2022-07-19 23:11:19,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267538 states to 267538 states and 438036 transitions. [2022-07-19 23:11:19,526 INFO L78 Accepts]: Start accepts. Automaton has 267538 states and 438036 transitions. Word has length 47 [2022-07-19 23:11:19,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:11:19,527 INFO L495 AbstractCegarLoop]: Abstraction has 267538 states and 438036 transitions. [2022-07-19 23:11:19,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 23:11:19,527 INFO L276 IsEmpty]: Start isEmpty. Operand 267538 states and 438036 transitions. [2022-07-19 23:11:19,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-19 23:11:19,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:11:19,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:11:19,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 23:11:19,529 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:11:19,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:11:19,530 INFO L85 PathProgramCache]: Analyzing trace with hash 599135497, now seen corresponding path program 1 times [2022-07-19 23:11:19,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:11:19,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268691524] [2022-07-19 23:11:19,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:11:19,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:11:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:19,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:11:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:20,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:11:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:20,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:11:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:20,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:11:20,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:11:20,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268691524] [2022-07-19 23:11:20,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268691524] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:11:20,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:11:20,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:11:20,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160698168] [2022-07-19 23:11:20,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:11:20,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:11:20,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:11:20,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:11:20,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:11:20,531 INFO L87 Difference]: Start difference. First operand 267538 states and 438036 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)