./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--w83781d.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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--w83781d.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 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:36:14,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:36:14,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:36:14,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:36:14,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:36:14,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:36:14,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:36:14,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:36:14,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:36:14,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:36:14,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:36:14,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:36:14,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:36:14,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:36:14,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:36:14,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:36:14,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:36:14,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:36:14,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:36:15,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:36:15,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:36:15,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:36:15,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:36:15,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:36:15,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:36:15,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:36:15,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:36:15,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:36:15,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:36:15,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:36:15,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:36:15,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:36:15,011 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:36:15,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:36:15,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:36:15,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:36:15,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:36:15,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:36:15,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:36:15,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:36:15,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:36:15,017 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:36:15,039 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:36:15,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:36:15,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:36:15,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:36:15,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:36:15,044 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:36:15,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:36:15,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:36:15,045 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:36:15,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:36:15,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:36:15,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:36:15,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:36:15,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:36:15,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:36:15,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:36:15,048 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:36:15,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:36:15,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:36:15,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:36:15,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:36:15,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:36:15,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:36:15,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:36:15,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:36:15,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:36:15,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:36:15,050 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:36:15,050 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:36:15,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:36:15,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:36:15,051 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 [2021-12-14 17:36:15,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:36:15,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:36:15,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:36:15,330 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:36:15,333 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:36:15,334 INFO L432 ainManager$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--w83781d.ko-main.cil.out.i [2021-12-14 17:36:15,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7ae3617c/6f583e5cfeb74cad8bb8984bc06435f8/FLAGfd63aa18e [2021-12-14 17:36:15,991 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:36:15,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2021-12-14 17:36:16,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7ae3617c/6f583e5cfeb74cad8bb8984bc06435f8/FLAGfd63aa18e [2021-12-14 17:36:16,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7ae3617c/6f583e5cfeb74cad8bb8984bc06435f8 [2021-12-14 17:36:16,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:36:16,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:36:16,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:36:16,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:36:16,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:36:16,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:36:16" (1/1) ... [2021-12-14 17:36:16,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359cf9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:16, skipping insertion in model container [2021-12-14 17:36:16,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:36:16" (1/1) ... [2021-12-14 17:36:16,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:36:16,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:36:17,666 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--w83781d.ko-main.cil.out.i[231089,231102] [2021-12-14 17:36:17,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:36:17,854 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:36:18,108 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--w83781d.ko-main.cil.out.i[231089,231102] [2021-12-14 17:36:18,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:36:18,388 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:36:18,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:18 WrapperNode [2021-12-14 17:36:18,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:36:18,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:36:18,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:36:18,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:36:18,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:18" (1/1) ... [2021-12-14 17:36:18,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:18" (1/1) ... [2021-12-14 17:36:18,750 INFO L137 Inliner]: procedures = 206, calls = 2928, calls flagged for inlining = 89, calls inlined = 81, statements flattened = 7883 [2021-12-14 17:36:18,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:36:18,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:36:18,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:36:18,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:36:18,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:18" (1/1) ... [2021-12-14 17:36:18,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:18" (1/1) ... [2021-12-14 17:36:18,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:18" (1/1) ... [2021-12-14 17:36:18,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:18" (1/1) ... [2021-12-14 17:36:18,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:18" (1/1) ... [2021-12-14 17:36:18,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:18" (1/1) ... [2021-12-14 17:36:19,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:18" (1/1) ... [2021-12-14 17:36:19,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:36:19,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:36:19,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:36:19,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:36:19,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:18" (1/1) ... [2021-12-14 17:36:19,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:36:19,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:36:19,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:36:19,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:36:19,161 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_read_value [2021-12-14 17:36:19,162 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_read_value [2021-12-14 17:36:19,162 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-12-14 17:36:19,162 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-12-14 17:36:19,162 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_detect [2021-12-14 17:36:19,162 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_detect [2021-12-14 17:36:19,162 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-12-14 17:36:19,163 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-12-14 17:36:19,163 INFO L130 BoogieDeclarations]: Found specification of procedure store_beep [2021-12-14 17:36:19,163 INFO L138 BoogieDeclarations]: Found implementation of procedure store_beep [2021-12-14 17:36:19,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:36:19,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:36:19,163 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2021-12-14 17:36:19,164 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2021-12-14 17:36:19,164 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2021-12-14 17:36:19,164 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2021-12-14 17:36:19,164 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2021-12-14 17:36:19,164 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2021-12-14 17:36:19,164 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_FROM_REG [2021-12-14 17:36:19,165 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_FROM_REG [2021-12-14 17:36:19,165 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:36:19,165 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:36:19,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:36:19,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:36:19,165 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-12-14 17:36:19,165 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-12-14 17:36:19,166 INFO L130 BoogieDeclarations]: Found specification of procedure show_sensor [2021-12-14 17:36:19,166 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sensor [2021-12-14 17:36:19,166 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-14 17:36:19,166 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-14 17:36:19,166 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-12-14 17:36:19,166 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-12-14 17:36:19,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:36:19,167 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max_hyst [2021-12-14 17:36:19,167 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max_hyst [2021-12-14 17:36:19,167 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-12-14 17:36:19,167 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-12-14 17:36:19,167 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-12-14 17:36:19,167 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-12-14 17:36:19,168 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2021-12-14 17:36:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2021-12-14 17:36:19,168 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_isa_unregister [2021-12-14 17:36:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_isa_unregister [2021-12-14 17:36:19,168 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-12-14 17:36:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-12-14 17:36:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:36:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure show_beep [2021-12-14 17:36:19,169 INFO L138 BoogieDeclarations]: Found implementation of procedure show_beep [2021-12-14 17:36:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-12-14 17:36:19,169 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-12-14 17:36:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:36:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:36:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-14 17:36:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-14 17:36:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-14 17:36:19,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-14 17:36:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2021-12-14 17:36:19,172 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2021-12-14 17:36:19,172 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2021-12-14 17:36:19,173 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2021-12-14 17:36:19,173 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-14 17:36:19,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-14 17:36:19,173 INFO L130 BoogieDeclarations]: Found specification of procedure store_sensor [2021-12-14 17:36:19,173 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sensor [2021-12-14 17:36:19,173 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_update_device [2021-12-14 17:36:19,173 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_update_device [2021-12-14 17:36:19,174 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_remove_files [2021-12-14 17:36:19,174 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_remove_files [2021-12-14 17:36:19,174 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-12-14 17:36:19,174 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-12-14 17:36:19,174 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-14 17:36:19,174 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-14 17:36:19,175 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2021-12-14 17:36:19,175 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2021-12-14 17:36:19,175 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2021-12-14 17:36:19,176 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2021-12-14 17:36:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-12-14 17:36:19,176 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-12-14 17:36:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_w83781d_data [2021-12-14 17:36:19,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_w83781d_data [2021-12-14 17:36:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:36:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-14 17:36:19,177 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-14 17:36:19,177 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-12-14 17:36:19,177 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-12-14 17:36:19,177 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2021-12-14 17:36:19,177 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2021-12-14 17:36:19,177 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-12-14 17:36:19,178 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-12-14 17:36:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2021-12-14 17:36:19,178 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2021-12-14 17:36:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:36:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2021-12-14 17:36:19,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2021-12-14 17:36:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2021-12-14 17:36:19,179 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2021-12-14 17:36:19,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:36:19,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:36:19,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_w83781d_data [2021-12-14 17:36:19,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_w83781d_data [2021-12-14 17:36:19,181 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max [2021-12-14 17:36:19,181 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max [2021-12-14 17:36:19,181 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_write_value [2021-12-14 17:36:19,181 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_write_value [2021-12-14 17:36:19,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:36:19,182 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-12-14 17:36:19,182 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-12-14 17:36:19,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:36:19,182 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2021-12-14 17:36:19,182 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2021-12-14 17:36:19,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:36:19,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2021-12-14 17:36:19,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2021-12-14 17:36:19,183 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2021-12-14 17:36:19,183 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2021-12-14 17:36:19,183 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max_hyst [2021-12-14 17:36:19,184 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max_hyst [2021-12-14 17:36:19,184 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-12-14 17:36:19,185 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-12-14 17:36:19,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:36:19,187 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2021-12-14 17:36:19,187 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2021-12-14 17:36:19,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:36:19,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:36:19,189 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-14 17:36:19,189 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-14 17:36:20,013 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:36:20,015 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:36:25,687 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:36:25,702 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:36:25,702 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:36:25,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:36:25 BoogieIcfgContainer [2021-12-14 17:36:25,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:36:25,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:36:25,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:36:25,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:36:25,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:36:16" (1/3) ... [2021-12-14 17:36:25,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf57789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:36:25, skipping insertion in model container [2021-12-14 17:36:25,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:18" (2/3) ... [2021-12-14 17:36:25,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf57789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:36:25, skipping insertion in model container [2021-12-14 17:36:25,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:36:25" (3/3) ... [2021-12-14 17:36:25,715 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2021-12-14 17:36:25,720 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:36:25,720 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:36:25,767 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:36:25,773 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:36:25,773 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:36:25,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 1942 states, 1456 states have (on average 1.5206043956043955) internal successors, (2214), 1467 states have internal predecessors, (2214), 427 states have call successors, (427), 57 states have call predecessors, (427), 57 states have return successors, (427), 427 states have call predecessors, (427), 427 states have call successors, (427) [2021-12-14 17:36:25,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-14 17:36:25,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:25,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:36:25,832 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:25,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:25,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1921795242, now seen corresponding path program 1 times [2021-12-14 17:36:25,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:25,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062682477] [2021-12-14 17:36:25,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:25,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 17:36:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:26,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:26,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:26,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:26,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062682477] [2021-12-14 17:36:26,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062682477] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:26,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:26,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:26,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529365295] [2021-12-14 17:36:26,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:26,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:26,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:26,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:26,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:26,819 INFO L87 Difference]: Start difference. First operand has 1942 states, 1456 states have (on average 1.5206043956043955) internal successors, (2214), 1467 states have internal predecessors, (2214), 427 states have call successors, (427), 57 states have call predecessors, (427), 57 states have return successors, (427), 427 states have call predecessors, (427), 427 states have call successors, (427) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (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) [2021-12-14 17:36:30,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:36:32,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:32,023 INFO L93 Difference]: Finished difference Result 5822 states and 9819 transitions. [2021-12-14 17:36:32,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:32,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (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 31 [2021-12-14 17:36:32,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:32,062 INFO L225 Difference]: With dead ends: 5822 [2021-12-14 17:36:32,062 INFO L226 Difference]: Without dead ends: 3875 [2021-12-14 17:36:32,091 INFO L932 BasicCegarLoop]: 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 [2021-12-14 17:36:32,094 INFO L933 BasicCegarLoop]: 3629 mSDtfsCounter, 3029 mSDsluCounter, 5275 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 928 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3289 SdHoareTripleChecker+Valid, 8904 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 928 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:32,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3289 Valid, 8904 Invalid, 1780 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [928 Valid, 851 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-12-14 17:36:32,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3875 states. [2021-12-14 17:36:32,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3875 to 3839. [2021-12-14 17:36:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3839 states, 2883 states have (on average 1.5202913631633714) internal successors, (4383), 2894 states have internal predecessors, (4383), 843 states have call successors, (843), 113 states have call predecessors, (843), 112 states have return successors, (834), 833 states have call predecessors, (834), 834 states have call successors, (834) [2021-12-14 17:36:32,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 6060 transitions. [2021-12-14 17:36:32,387 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 6060 transitions. Word has length 31 [2021-12-14 17:36:32,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:32,388 INFO L470 AbstractCegarLoop]: Abstraction has 3839 states and 6060 transitions. [2021-12-14 17:36:32,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (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) [2021-12-14 17:36:32,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 6060 transitions. [2021-12-14 17:36:32,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-14 17:36:32,392 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:32,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:36:32,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:36:32,393 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:32,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:32,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1987244376, now seen corresponding path program 1 times [2021-12-14 17:36:32,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:32,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026948466] [2021-12-14 17:36:32,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:32,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:32,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:36:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:32,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:32,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:32,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:32,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026948466] [2021-12-14 17:36:32,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026948466] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:32,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:32,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:32,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302780658] [2021-12-14 17:36:32,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:32,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:32,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:32,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:32,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:32,766 INFO L87 Difference]: Start difference. First operand 3839 states and 6060 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (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) [2021-12-14 17:36:35,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:35,671 INFO L93 Difference]: Finished difference Result 11531 states and 18262 transitions. [2021-12-14 17:36:35,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:35,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (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 32 [2021-12-14 17:36:35,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:35,724 INFO L225 Difference]: With dead ends: 11531 [2021-12-14 17:36:35,725 INFO L226 Difference]: Without dead ends: 7695 [2021-12-14 17:36:35,749 INFO L932 BasicCegarLoop]: 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 [2021-12-14 17:36:35,751 INFO L933 BasicCegarLoop]: 3645 mSDtfsCounter, 3028 mSDsluCounter, 5274 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 926 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3276 SdHoareTripleChecker+Valid, 8919 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 926 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:35,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3276 Valid, 8919 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [926 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-14 17:36:35,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7695 states. [2021-12-14 17:36:35,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7695 to 7643. [2021-12-14 17:36:36,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7643 states, 5743 states have (on average 1.5202855650356957) internal successors, (8731), 5758 states have internal predecessors, (8731), 1675 states have call successors, (1675), 225 states have call predecessors, (1675), 224 states have return successors, (1666), 1663 states have call predecessors, (1666), 1666 states have call successors, (1666) [2021-12-14 17:36:36,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7643 states to 7643 states and 12072 transitions. [2021-12-14 17:36:36,058 INFO L78 Accepts]: Start accepts. Automaton has 7643 states and 12072 transitions. Word has length 32 [2021-12-14 17:36:36,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:36,058 INFO L470 AbstractCegarLoop]: Abstraction has 7643 states and 12072 transitions. [2021-12-14 17:36:36,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (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) [2021-12-14 17:36:36,059 INFO L276 IsEmpty]: Start isEmpty. Operand 7643 states and 12072 transitions. [2021-12-14 17:36:36,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-14 17:36:36,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:36,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:36:36,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:36:36,065 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:36,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:36,066 INFO L85 PathProgramCache]: Analyzing trace with hash -886111828, now seen corresponding path program 1 times [2021-12-14 17:36:36,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:36,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647717659] [2021-12-14 17:36:36,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:36,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:36,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:36:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:36,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:36,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:36,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647717659] [2021-12-14 17:36:36,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647717659] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:36,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:36,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:36,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021582784] [2021-12-14 17:36:36,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:36,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:36,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:36,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:36,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:36,561 INFO L87 Difference]: Start difference. First operand 7643 states and 12072 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-12-14 17:36:39,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:36:41,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:41,728 INFO L93 Difference]: Finished difference Result 22963 states and 36386 transitions. [2021-12-14 17:36:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:41,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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 28 [2021-12-14 17:36:41,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:41,845 INFO L225 Difference]: With dead ends: 22963 [2021-12-14 17:36:41,845 INFO L226 Difference]: Without dead ends: 15323 [2021-12-14 17:36:41,900 INFO L932 BasicCegarLoop]: 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 [2021-12-14 17:36:41,903 INFO L933 BasicCegarLoop]: 3514 mSDtfsCounter, 3069 mSDsluCounter, 5214 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 961 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3330 SdHoareTripleChecker+Valid, 8728 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 961 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:41,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3330 Valid, 8728 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [961 Valid, 846 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-12-14 17:36:41,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15323 states. [2021-12-14 17:36:42,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15323 to 15239. [2021-12-14 17:36:42,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15239 states, 11453 states have (on average 1.5200384178817776) internal successors, (17409), 11476 states have internal predecessors, (17409), 3337 states have call successors, (3337), 449 states have call predecessors, (3337), 448 states have return successors, (3328), 3321 states have call predecessors, (3328), 3328 states have call successors, (3328) [2021-12-14 17:36:42,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15239 states to 15239 states and 24074 transitions. [2021-12-14 17:36:42,620 INFO L78 Accepts]: Start accepts. Automaton has 15239 states and 24074 transitions. Word has length 28 [2021-12-14 17:36:42,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:42,621 INFO L470 AbstractCegarLoop]: Abstraction has 15239 states and 24074 transitions. [2021-12-14 17:36:42,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-12-14 17:36:42,622 INFO L276 IsEmpty]: Start isEmpty. Operand 15239 states and 24074 transitions. [2021-12-14 17:36:42,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-14 17:36:42,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:42,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:36:42,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:36:42,625 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:42,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:42,627 INFO L85 PathProgramCache]: Analyzing trace with hash 409562076, now seen corresponding path program 1 times [2021-12-14 17:36:42,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:42,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738942900] [2021-12-14 17:36:42,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:42,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:43,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:36:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:43,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:43,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:43,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:43,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738942900] [2021-12-14 17:36:43,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738942900] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:43,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:43,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:43,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990803313] [2021-12-14 17:36:43,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:43,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:43,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:43,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:43,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:43,139 INFO L87 Difference]: Start difference. First operand 15239 states and 24074 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-12-14 17:36:46,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:46,196 INFO L93 Difference]: Finished difference Result 45791 states and 72568 transitions. [2021-12-14 17:36:46,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:46,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 29 [2021-12-14 17:36:46,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:46,373 INFO L225 Difference]: With dead ends: 45791 [2021-12-14 17:36:46,374 INFO L226 Difference]: Without dead ends: 30555 [2021-12-14 17:36:46,483 INFO L932 BasicCegarLoop]: 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 [2021-12-14 17:36:46,484 INFO L933 BasicCegarLoop]: 3870 mSDtfsCounter, 3044 mSDsluCounter, 5483 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 902 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3292 SdHoareTripleChecker+Valid, 9353 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 902 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:46,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3292 Valid, 9353 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [902 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-14 17:36:46,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30555 states. [2021-12-14 17:36:47,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30555 to 30407. [2021-12-14 17:36:47,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30407 states, 22853 states have (on average 1.519669190040695) internal successors, (34729), 22892 states have internal predecessors, (34729), 6657 states have call successors, (6657), 897 states have call predecessors, (6657), 896 states have return successors, (6648), 6633 states have call predecessors, (6648), 6648 states have call successors, (6648) [2021-12-14 17:36:47,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30407 states to 30407 states and 48034 transitions. [2021-12-14 17:36:47,901 INFO L78 Accepts]: Start accepts. Automaton has 30407 states and 48034 transitions. Word has length 29 [2021-12-14 17:36:47,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:47,902 INFO L470 AbstractCegarLoop]: Abstraction has 30407 states and 48034 transitions. [2021-12-14 17:36:47,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-12-14 17:36:47,902 INFO L276 IsEmpty]: Start isEmpty. Operand 30407 states and 48034 transitions. [2021-12-14 17:36:47,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-14 17:36:47,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:47,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:36:47,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:36:47,905 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:47,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:47,905 INFO L85 PathProgramCache]: Analyzing trace with hash -919829617, now seen corresponding path program 1 times [2021-12-14 17:36:47,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:47,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445162901] [2021-12-14 17:36:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:47,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:48,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:36:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:48,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:48,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:48,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:48,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445162901] [2021-12-14 17:36:48,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445162901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:48,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:48,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:48,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476555338] [2021-12-14 17:36:48,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:48,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:48,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:48,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:48,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:48,364 INFO L87 Difference]: Start difference. First operand 30407 states and 48034 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) [2021-12-14 17:36:51,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:51,754 INFO L93 Difference]: Finished difference Result 91375 states and 144800 transitions. [2021-12-14 17:36:51,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:51,755 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 [2021-12-14 17:36:51,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:52,245 INFO L225 Difference]: With dead ends: 91375 [2021-12-14 17:36:52,246 INFO L226 Difference]: Without dead ends: 60971 [2021-12-14 17:36:52,386 INFO L932 BasicCegarLoop]: 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 [2021-12-14 17:36:52,387 INFO L933 BasicCegarLoop]: 3962 mSDtfsCounter, 3013 mSDsluCounter, 5539 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 881 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3272 SdHoareTripleChecker+Valid, 9501 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 881 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:52,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3272 Valid, 9501 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [881 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 17:36:52,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60971 states. [2021-12-14 17:36:54,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60971 to 60695. [2021-12-14 17:36:54,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60695 states, 45613 states have (on average 1.5192379365531756) internal successors, (69297), 45684 states have internal predecessors, (69297), 13289 states have call successors, (13289), 1793 states have call predecessors, (13289), 1792 states have return successors, (13280), 13249 states have call predecessors, (13280), 13280 states have call successors, (13280) [2021-12-14 17:36:55,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60695 states to 60695 states and 95866 transitions. [2021-12-14 17:36:55,372 INFO L78 Accepts]: Start accepts. Automaton has 60695 states and 95866 transitions. Word has length 34 [2021-12-14 17:36:55,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:55,373 INFO L470 AbstractCegarLoop]: Abstraction has 60695 states and 95866 transitions. [2021-12-14 17:36:55,373 INFO L471 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) [2021-12-14 17:36:55,373 INFO L276 IsEmpty]: Start isEmpty. Operand 60695 states and 95866 transitions. [2021-12-14 17:36:55,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-14 17:36:55,374 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:55,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:36:55,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:36:55,375 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:55,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:55,375 INFO L85 PathProgramCache]: Analyzing trace with hash 2119451473, now seen corresponding path program 1 times [2021-12-14 17:36:55,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:55,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753432653] [2021-12-14 17:36:55,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:55,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:55,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:36:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:55,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:55,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:55,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753432653] [2021-12-14 17:36:55,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753432653] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:55,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:55,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:55,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355324807] [2021-12-14 17:36:55,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:55,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:55,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:55,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:55,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:55,742 INFO L87 Difference]: Start difference. First operand 60695 states and 95866 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (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) [2021-12-14 17:37:00,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:00,469 INFO L93 Difference]: Finished difference Result 182271 states and 288776 transitions. [2021-12-14 17:37:00,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:37:00,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (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 32 [2021-12-14 17:37:00,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:01,444 INFO L225 Difference]: With dead ends: 182271 [2021-12-14 17:37:01,445 INFO L226 Difference]: Without dead ends: 121579 [2021-12-14 17:37:01,728 INFO L932 BasicCegarLoop]: 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 [2021-12-14 17:37:01,728 INFO L933 BasicCegarLoop]: 3880 mSDtfsCounter, 3016 mSDsluCounter, 5472 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3263 SdHoareTripleChecker+Valid, 9352 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:01,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3263 Valid, 9352 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 17:37:01,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121579 states.