./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 f4b24e32 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-?-f4b24e3 [2022-07-13 23:48:17,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 23:48:17,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 23:48:17,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 23:48:17,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 23:48:17,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 23:48:17,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 23:48:17,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 23:48:17,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 23:48:17,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 23:48:17,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 23:48:17,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 23:48:17,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 23:48:17,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 23:48:17,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 23:48:17,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 23:48:17,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 23:48:17,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 23:48:17,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 23:48:17,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 23:48:17,224 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 23:48:17,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 23:48:17,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 23:48:17,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 23:48:17,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 23:48:17,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 23:48:17,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 23:48:17,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 23:48:17,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 23:48:17,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 23:48:17,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 23:48:17,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 23:48:17,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 23:48:17,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 23:48:17,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 23:48:17,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 23:48:17,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 23:48:17,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 23:48:17,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 23:48:17,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 23:48:17,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 23:48:17,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 23:48:17,242 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 23:48:17,263 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 23:48:17,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 23:48:17,264 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 23:48:17,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 23:48:17,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 23:48:17,264 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 23:48:17,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 23:48:17,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 23:48:17,265 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 23:48:17,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 23:48:17,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 23:48:17,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 23:48:17,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 23:48:17,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 23:48:17,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 23:48:17,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 23:48:17,267 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 23:48:17,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 23:48:17,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 23:48:17,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 23:48:17,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 23:48:17,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 23:48:17,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 23:48:17,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 23:48:17,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 23:48:17,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 23:48:17,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 23:48:17,269 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 23:48:17,269 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 23:48:17,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 23:48:17,269 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ad6d1ed8310d8e3264189ac87472d58c77647a0c63d75779b5974e889987542 [2022-07-13 23:48:17,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 23:48:17,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 23:48:17,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 23:48:17,445 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 23:48:17,445 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 23:48:17,446 INFO L432 ainManager$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 [2022-07-13 23:48:17,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a82092d9a/fe5154945c82438ca62cc2c03345d6d8/FLAG9f36f4010 [2022-07-13 23:48:18,026 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 23:48:18,026 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 [2022-07-13 23:48:18,049 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a82092d9a/fe5154945c82438ca62cc2c03345d6d8/FLAG9f36f4010 [2022-07-13 23:48:18,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a82092d9a/fe5154945c82438ca62cc2c03345d6d8 [2022-07-13 23:48:18,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 23:48:18,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 23:48:18,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 23:48:18,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 23:48:18,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 23:48:18,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:48:18" (1/1) ... [2022-07-13 23:48:18,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d7b612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:18, skipping insertion in model container [2022-07-13 23:48:18,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:48:18" (1/1) ... [2022-07-13 23:48:18,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 23:48:18,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 23:48:19,173 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] [2022-07-13 23:48:19,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 23:48:19,254 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 23:48:19,374 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] [2022-07-13 23:48:19,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 23:48:19,533 INFO L208 MainTranslator]: Completed translation [2022-07-13 23:48:19,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:19 WrapperNode [2022-07-13 23:48:19,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 23:48:19,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 23:48:19,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 23:48:19,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 23:48:19,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:19" (1/1) ... [2022-07-13 23:48:19,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:19" (1/1) ... [2022-07-13 23:48:19,731 INFO L137 Inliner]: procedures = 115, calls = 2009, calls flagged for inlining = 45, calls inlined = 37, statements flattened = 5217 [2022-07-13 23:48:19,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 23:48:19,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 23:48:19,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 23:48:19,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 23:48:19,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:19" (1/1) ... [2022-07-13 23:48:19,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:19" (1/1) ... [2022-07-13 23:48:19,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:19" (1/1) ... [2022-07-13 23:48:19,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:19" (1/1) ... [2022-07-13 23:48:19,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:19" (1/1) ... [2022-07-13 23:48:19,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:19" (1/1) ... [2022-07-13 23:48:19,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:19" (1/1) ... [2022-07-13 23:48:19,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 23:48:19,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 23:48:19,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 23:48:19,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 23:48:19,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:19" (1/1) ... [2022-07-13 23:48:19,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 23:48:19,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:48:19,920 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) [2022-07-13 23:48:19,937 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 [2022-07-13 23:48:19,947 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_set_limit [2022-07-13 23:48:19,947 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_set_limit [2022-07-13 23:48:19,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 23:48:19,947 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-07-13 23:48:19,947 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-07-13 23:48:19,947 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-07-13 23:48:19,947 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-07-13 23:48:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_limit [2022-07-13 23:48:19,948 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_limit [2022-07-13 23:48:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_update_device [2022-07-13 23:48:19,948 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_update_device [2022-07-13 23:48:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_input [2022-07-13 23:48:19,948 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_input [2022-07-13 23:48:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_read_adc [2022-07-13 23:48:19,948 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_read_adc [2022-07-13 23:48:19,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-13 23:48:19,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-13 23:48:19,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_max16065_data [2022-07-13 23:48:19,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_max16065_data [2022-07-13 23:48:19,949 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_alarm [2022-07-13 23:48:19,949 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_alarm [2022-07-13 23:48:19,949 INFO L130 BoogieDeclarations]: Found specification of procedure LIMIT_TO_MV [2022-07-13 23:48:19,949 INFO L138 BoogieDeclarations]: Found implementation of procedure LIMIT_TO_MV [2022-07-13 23:48:19,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 23:48:19,950 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-13 23:48:19,950 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-13 23:48:19,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-13 23:48:19,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-13 23:48:19,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-13 23:48:19,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-13 23:48:19,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 23:48:19,951 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-13 23:48:19,951 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-13 23:48:19,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 23:48:19,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 23:48:19,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 23:48:19,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2022-07-13 23:48:19,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2022-07-13 23:48:19,951 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-07-13 23:48:19,952 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-07-13 23:48:19,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 23:48:19,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 23:48:19,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 23:48:19,952 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_cleanup [2022-07-13 23:48:19,952 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_cleanup [2022-07-13 23:48:19,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 23:48:19,952 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-07-13 23:48:19,953 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-07-13 23:48:19,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 23:48:19,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 23:48:19,953 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_file [2022-07-13 23:48:19,953 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_file [2022-07-13 23:48:19,953 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-13 23:48:19,954 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-13 23:48:20,441 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 23:48:20,443 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 23:48:23,585 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 23:48:23,596 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 23:48:23,596 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 23:48:23,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:48:23 BoogieIcfgContainer [2022-07-13 23:48:23,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 23:48:23,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 23:48:23,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 23:48:23,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 23:48:23,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:48:18" (1/3) ... [2022-07-13 23:48:23,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cff7ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:48:23, skipping insertion in model container [2022-07-13 23:48:23,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:19" (2/3) ... [2022-07-13 23:48:23,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cff7ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:48:23, skipping insertion in model container [2022-07-13 23:48:23,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:48:23" (3/3) ... [2022-07-13 23:48:23,603 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2022-07-13 23:48:23,613 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 23:48:23,613 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 23:48:23,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 23:48:23,715 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@5255793d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@40738545 [2022-07-13 23:48:23,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 23:48:23,722 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) [2022-07-13 23:48:23,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-13 23:48:23,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:23,745 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] [2022-07-13 23:48:23,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:23,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:23,749 INFO L85 PathProgramCache]: Analyzing trace with hash -2019820294, now seen corresponding path program 1 times [2022-07-13 23:48:23,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:23,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345279618] [2022-07-13 23:48:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:23,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:24,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 23:48:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:24,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:48:24,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:24,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345279618] [2022-07-13 23:48:24,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345279618] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:24,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:24,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:48:24,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503819452] [2022-07-13 23:48:24,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:24,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:48:24,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:24,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:48:24,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:48:24,542 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) [2022-07-13 23:48:25,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:25,722 INFO L93 Difference]: Finished difference Result 3401 states and 5976 transitions. [2022-07-13 23:48:25,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:48:25,724 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 [2022-07-13 23:48:25,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:25,759 INFO L225 Difference]: With dead ends: 3401 [2022-07-13 23:48:25,760 INFO L226 Difference]: Without dead ends: 2295 [2022-07-13 23:48:25,772 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 [2022-07-13 23:48:25,775 INFO L413 NwaCegarLoop]: 1976 mSDtfsCounter, 1952 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2083 SdHoareTripleChecker+Valid, 5135 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:25,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2083 Valid, 5135 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 23:48:25,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2022-07-13 23:48:25,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 2166. [2022-07-13 23:48:25,917 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) [2022-07-13 23:48:25,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 3547 transitions. [2022-07-13 23:48:25,928 INFO L78 Accepts]: Start accepts. Automaton has 2166 states and 3547 transitions. Word has length 33 [2022-07-13 23:48:25,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:25,928 INFO L495 AbstractCegarLoop]: Abstraction has 2166 states and 3547 transitions. [2022-07-13 23:48:25,929 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) [2022-07-13 23:48:25,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2166 states and 3547 transitions. [2022-07-13 23:48:25,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-13 23:48:25,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:25,931 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] [2022-07-13 23:48:25,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 23:48:25,932 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:25,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:25,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1851303095, now seen corresponding path program 1 times [2022-07-13 23:48:25,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:25,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109071690] [2022-07-13 23:48:25,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:25,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:26,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 23:48:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:26,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:48:26,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:26,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109071690] [2022-07-13 23:48:26,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109071690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:26,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:26,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:48:26,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840032277] [2022-07-13 23:48:26,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:26,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:48:26,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:26,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:48:26,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:48:26,164 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) [2022-07-13 23:48:27,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:27,219 INFO L93 Difference]: Finished difference Result 6708 states and 11239 transitions. [2022-07-13 23:48:27,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:48:27,219 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 [2022-07-13 23:48:27,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:27,242 INFO L225 Difference]: With dead ends: 6708 [2022-07-13 23:48:27,242 INFO L226 Difference]: Without dead ends: 4545 [2022-07-13 23:48:27,249 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 [2022-07-13 23:48:27,251 INFO L413 NwaCegarLoop]: 2105 mSDtfsCounter, 1945 mSDsluCounter, 3369 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2015 SdHoareTripleChecker+Valid, 5474 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:27,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2015 Valid, 5474 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 23:48:27,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2022-07-13 23:48:27,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 4302. [2022-07-13 23:48:27,358 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) [2022-07-13 23:48:27,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 7052 transitions. [2022-07-13 23:48:27,374 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 7052 transitions. Word has length 34 [2022-07-13 23:48:27,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:27,374 INFO L495 AbstractCegarLoop]: Abstraction has 4302 states and 7052 transitions. [2022-07-13 23:48:27,375 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) [2022-07-13 23:48:27,375 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 7052 transitions. [2022-07-13 23:48:27,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-13 23:48:27,376 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:27,377 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] [2022-07-13 23:48:27,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 23:48:27,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:27,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:27,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1553931897, now seen corresponding path program 1 times [2022-07-13 23:48:27,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:27,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639830409] [2022-07-13 23:48:27,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:27,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:27,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 23:48:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:27,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:27,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:48:27,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:27,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639830409] [2022-07-13 23:48:27,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639830409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:27,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:27,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:48:27,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140635275] [2022-07-13 23:48:27,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:27,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:48:27,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:27,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:48:27,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:48:27,603 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) [2022-07-13 23:48:28,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:28,699 INFO L93 Difference]: Finished difference Result 13332 states and 22354 transitions. [2022-07-13 23:48:28,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:48:28,699 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 [2022-07-13 23:48:28,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:28,739 INFO L225 Difference]: With dead ends: 13332 [2022-07-13 23:48:28,739 INFO L226 Difference]: Without dead ends: 9033 [2022-07-13 23:48:28,752 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 [2022-07-13 23:48:28,753 INFO L413 NwaCegarLoop]: 2088 mSDtfsCounter, 1944 mSDsluCounter, 3335 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2027 SdHoareTripleChecker+Valid, 5423 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:28,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2027 Valid, 5423 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 23:48:28,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9033 states. [2022-07-13 23:48:28,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9033 to 8562. [2022-07-13 23:48:28,975 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) [2022-07-13 23:48:29,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8562 states to 8562 states and 14040 transitions. [2022-07-13 23:48:29,003 INFO L78 Accepts]: Start accepts. Automaton has 8562 states and 14040 transitions. Word has length 37 [2022-07-13 23:48:29,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:29,003 INFO L495 AbstractCegarLoop]: Abstraction has 8562 states and 14040 transitions. [2022-07-13 23:48:29,004 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) [2022-07-13 23:48:29,004 INFO L276 IsEmpty]: Start isEmpty. Operand 8562 states and 14040 transitions. [2022-07-13 23:48:29,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 23:48:29,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:29,006 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] [2022-07-13 23:48:29,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 23:48:29,006 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:29,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:29,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1378079213, now seen corresponding path program 1 times [2022-07-13 23:48:29,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:29,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395146586] [2022-07-13 23:48:29,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:29,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:29,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 23:48:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:29,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:29,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:48:29,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:29,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395146586] [2022-07-13 23:48:29,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395146586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:29,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:29,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:48:29,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221464532] [2022-07-13 23:48:29,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:29,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:48:29,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:29,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:48:29,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:48:29,248 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) [2022-07-13 23:48:30,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:30,506 INFO L93 Difference]: Finished difference Result 26544 states and 44514 transitions. [2022-07-13 23:48:30,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:48:30,507 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 [2022-07-13 23:48:30,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:30,593 INFO L225 Difference]: With dead ends: 26544 [2022-07-13 23:48:30,594 INFO L226 Difference]: Without dead ends: 17985 [2022-07-13 23:48:30,630 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 [2022-07-13 23:48:30,631 INFO L413 NwaCegarLoop]: 2093 mSDtfsCounter, 1933 mSDsluCounter, 3364 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2039 SdHoareTripleChecker+Valid, 5457 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:30,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2039 Valid, 5457 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 23:48:30,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17985 states. [2022-07-13 23:48:31,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17985 to 17058. [2022-07-13 23:48:31,208 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) [2022-07-13 23:48:31,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17058 states to 17058 states and 27972 transitions. [2022-07-13 23:48:31,268 INFO L78 Accepts]: Start accepts. Automaton has 17058 states and 27972 transitions. Word has length 41 [2022-07-13 23:48:31,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:31,269 INFO L495 AbstractCegarLoop]: Abstraction has 17058 states and 27972 transitions. [2022-07-13 23:48:31,270 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) [2022-07-13 23:48:31,270 INFO L276 IsEmpty]: Start isEmpty. Operand 17058 states and 27972 transitions. [2022-07-13 23:48:31,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-13 23:48:31,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:31,272 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] [2022-07-13 23:48:31,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 23:48:31,272 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:31,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:31,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1020050902, now seen corresponding path program 1 times [2022-07-13 23:48:31,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:31,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779992150] [2022-07-13 23:48:31,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:31,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:31,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 23:48:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:31,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:31,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 23:48:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:48:31,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:31,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779992150] [2022-07-13 23:48:31,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779992150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:31,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:31,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:48:31,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122721152] [2022-07-13 23:48:31,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:31,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:48:31,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:31,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:48:31,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:48:31,564 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) [2022-07-13 23:48:33,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:33,024 INFO L93 Difference]: Finished difference Result 52832 states and 88582 transitions. [2022-07-13 23:48:33,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:48:33,025 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 [2022-07-13 23:48:33,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:33,171 INFO L225 Difference]: With dead ends: 52832 [2022-07-13 23:48:33,171 INFO L226 Difference]: Without dead ends: 35777 [2022-07-13 23:48:33,214 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 [2022-07-13 23:48:33,215 INFO L413 NwaCegarLoop]: 2072 mSDtfsCounter, 1916 mSDsluCounter, 3262 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 5334 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:33,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2024 Valid, 5334 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 23:48:33,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35777 states. [2022-07-13 23:48:34,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35777 to 33938. [2022-07-13 23:48:34,200 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) [2022-07-13 23:48:34,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33938 states to 33938 states and 55636 transitions. [2022-07-13 23:48:34,298 INFO L78 Accepts]: Start accepts. Automaton has 33938 states and 55636 transitions. Word has length 46 [2022-07-13 23:48:34,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:34,300 INFO L495 AbstractCegarLoop]: Abstraction has 33938 states and 55636 transitions. [2022-07-13 23:48:34,300 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) [2022-07-13 23:48:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 33938 states and 55636 transitions. [2022-07-13 23:48:34,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 23:48:34,302 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:34,302 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] [2022-07-13 23:48:34,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 23:48:34,302 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:34,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:34,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1204380704, now seen corresponding path program 1 times [2022-07-13 23:48:34,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:34,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200278396] [2022-07-13 23:48:34,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:34,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 23:48:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 23:48:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:48:34,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:34,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200278396] [2022-07-13 23:48:34,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200278396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:34,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:34,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:48:34,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424626019] [2022-07-13 23:48:34,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:34,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:48:34,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:34,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:48:34,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:48:34,532 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) [2022-07-13 23:48:36,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:36,646 INFO L93 Difference]: Finished difference Result 105136 states and 176214 transitions. [2022-07-13 23:48:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:48:36,646 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 [2022-07-13 23:48:36,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:37,128 INFO L225 Difference]: With dead ends: 105136 [2022-07-13 23:48:37,129 INFO L226 Difference]: Without dead ends: 71201 [2022-07-13 23:48:37,218 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 [2022-07-13 23:48:37,221 INFO L413 NwaCegarLoop]: 2159 mSDtfsCounter, 1938 mSDsluCounter, 3412 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1998 SdHoareTripleChecker+Valid, 5571 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:37,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1998 Valid, 5571 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 23:48:37,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71201 states. [2022-07-13 23:48:39,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71201 to 67538. [2022-07-13 23:48:39,347 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) [2022-07-13 23:48:39,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67538 states to 67538 states and 110676 transitions. [2022-07-13 23:48:39,566 INFO L78 Accepts]: Start accepts. Automaton has 67538 states and 110676 transitions. Word has length 41 [2022-07-13 23:48:39,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:39,567 INFO L495 AbstractCegarLoop]: Abstraction has 67538 states and 110676 transitions. [2022-07-13 23:48:39,567 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) [2022-07-13 23:48:39,567 INFO L276 IsEmpty]: Start isEmpty. Operand 67538 states and 110676 transitions. [2022-07-13 23:48:39,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 23:48:39,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:39,570 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] [2022-07-13 23:48:39,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 23:48:39,570 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:39,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:39,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1886641317, now seen corresponding path program 1 times [2022-07-13 23:48:39,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:39,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582011808] [2022-07-13 23:48:39,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:39,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:40,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 23:48:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:40,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:40,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 23:48:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:40,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:48:40,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:40,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582011808] [2022-07-13 23:48:40,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582011808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:40,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:40,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:48:40,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386054024] [2022-07-13 23:48:40,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:40,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:48:40,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:40,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:48:40,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:48:40,052 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) [2022-07-13 23:48:43,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:43,342 INFO L93 Difference]: Finished difference Result 209264 states and 350582 transitions. [2022-07-13 23:48:43,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:48:43,343 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 [2022-07-13 23:48:43,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:44,042 INFO L225 Difference]: With dead ends: 209264 [2022-07-13 23:48:44,042 INFO L226 Difference]: Without dead ends: 141729 [2022-07-13 23:48:44,230 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 [2022-07-13 23:48:44,230 INFO L413 NwaCegarLoop]: 2070 mSDtfsCounter, 1958 mSDsluCounter, 3304 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2086 SdHoareTripleChecker+Valid, 5374 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:44,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2086 Valid, 5374 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 23:48:44,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141729 states. [2022-07-13 23:48:48,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141729 to 134418. [2022-07-13 23:48:48,549 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) [2022-07-13 23:48:49,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134418 states to 134418 states and 220180 transitions. [2022-07-13 23:48:49,088 INFO L78 Accepts]: Start accepts. Automaton has 134418 states and 220180 transitions. Word has length 43 [2022-07-13 23:48:49,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:49,088 INFO L495 AbstractCegarLoop]: Abstraction has 134418 states and 220180 transitions. [2022-07-13 23:48:49,089 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) [2022-07-13 23:48:49,089 INFO L276 IsEmpty]: Start isEmpty. Operand 134418 states and 220180 transitions. [2022-07-13 23:48:49,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-13 23:48:49,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:49,090 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] [2022-07-13 23:48:49,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 23:48:49,091 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:49,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:49,091 INFO L85 PathProgramCache]: Analyzing trace with hash -259417434, now seen corresponding path program 1 times [2022-07-13 23:48:49,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:49,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480482759] [2022-07-13 23:48:49,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:49,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:49,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 23:48:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:49,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:49,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 23:48:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:48:49,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:49,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480482759] [2022-07-13 23:48:49,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480482759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:49,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:49,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:48:49,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516296303] [2022-07-13 23:48:49,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:49,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:48:49,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:49,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:48:49,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:48:49,292 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) [2022-07-13 23:48:55,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:55,313 INFO L93 Difference]: Finished difference Result 416560 states and 697526 transitions. [2022-07-13 23:48:55,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:48:55,313 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 [2022-07-13 23:48:55,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:57,128 INFO L225 Difference]: With dead ends: 416560 [2022-07-13 23:48:57,128 INFO L226 Difference]: Without dead ends: 282145 [2022-07-13 23:48:57,494 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 [2022-07-13 23:48:57,496 INFO L413 NwaCegarLoop]: 2117 mSDtfsCounter, 1937 mSDsluCounter, 3367 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2068 SdHoareTripleChecker+Valid, 5484 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:57,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2068 Valid, 5484 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 23:48:57,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282145 states. [2022-07-13 23:49:04,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282145 to 267538. [2022-07-13 23:49:05,107 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) [2022-07-13 23:49:06,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267538 states to 267538 states and 438036 transitions. [2022-07-13 23:49:06,495 INFO L78 Accepts]: Start accepts. Automaton has 267538 states and 438036 transitions. Word has length 47 [2022-07-13 23:49:06,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:49:06,495 INFO L495 AbstractCegarLoop]: Abstraction has 267538 states and 438036 transitions. [2022-07-13 23:49:06,495 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) [2022-07-13 23:49:06,496 INFO L276 IsEmpty]: Start isEmpty. Operand 267538 states and 438036 transitions. [2022-07-13 23:49:06,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-13 23:49:06,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:49:06,497 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] [2022-07-13 23:49:06,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 23:49:06,506 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:49:06,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:49:06,507 INFO L85 PathProgramCache]: Analyzing trace with hash 599135497, now seen corresponding path program 1 times [2022-07-13 23:49:06,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:49:06,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526095714] [2022-07-13 23:49:06,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:49:06,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:49:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:06,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:49:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:06,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:49:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:06,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 23:49:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:06,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:49:06,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:49:06,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526095714] [2022-07-13 23:49:06,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526095714] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:49:06,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:49:06,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:49:06,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627247993] [2022-07-13 23:49:06,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:49:06,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:49:06,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:49:06,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:49:06,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:49:06,714 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)