./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 6c24879c 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-?-6c24879 [2022-07-12 12:07:58,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:07:58,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:07:58,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:07:58,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:07:58,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:07:58,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:07:58,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:07:58,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:07:58,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:07:58,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:07:58,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:07:58,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:07:58,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:07:58,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:07:58,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:07:58,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:07:58,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:07:58,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:07:58,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:07:58,939 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:07:58,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:07:58,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:07:58,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:07:58,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:07:58,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:07:58,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:07:58,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:07:58,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:07:58,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:07:58,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:07:58,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:07:58,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:07:58,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:07:58,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:07:58,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:07:58,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:07:58,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:07:58,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:07:58,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:07:58,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:07:58,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:07:58,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 12:07:58,995 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:07:58,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:07:58,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:07:58,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:07:58,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:07:58,996 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:07:58,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:07:58,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:07:58,997 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:07:58,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:07:58,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 12:07:58,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:07:58,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:07:58,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:07:58,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:07:58,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:07:58,998 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:07:58,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:07:58,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:07:59,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:07:59,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:07:59,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:07:59,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:07:59,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:07:59,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:07:59,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 12:07:59,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 12:07:59,002 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:07:59,002 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:07:59,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:07:59,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ad6d1ed8310d8e3264189ac87472d58c77647a0c63d75779b5974e889987542 [2022-07-12 12:07:59,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:07:59,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:07:59,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:07:59,260 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:07:59,261 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:07:59,262 INFO L432 ainManager$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 [2022-07-12 12:07:59,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/274c10df8/f95f9145cd6d4212ba54810c88e4faac/FLAGf5b826dac [2022-07-12 12:07:59,959 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:07:59,960 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 [2022-07-12 12:07:59,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/274c10df8/f95f9145cd6d4212ba54810c88e4faac/FLAGf5b826dac [2022-07-12 12:08:00,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/274c10df8/f95f9145cd6d4212ba54810c88e4faac [2022-07-12 12:08:00,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:08:00,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:08:00,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:08:00,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:08:00,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:08:00,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:08:00" (1/1) ... [2022-07-12 12:08:00,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff1b341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:00, skipping insertion in model container [2022-07-12 12:08:00,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:08:00" (1/1) ... [2022-07-12 12:08:00,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:08:00,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:08:01,073 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] [2022-07-12 12:08:01,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:08:01,224 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:08:01,448 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] [2022-07-12 12:08:01,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:08:01,683 INFO L208 MainTranslator]: Completed translation [2022-07-12 12:08:01,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:01 WrapperNode [2022-07-12 12:08:01,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 12:08:01,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 12:08:01,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 12:08:01,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 12:08:01,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:01" (1/1) ... [2022-07-12 12:08:01,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:01" (1/1) ... [2022-07-12 12:08:01,954 INFO L137 Inliner]: procedures = 115, calls = 2009, calls flagged for inlining = 45, calls inlined = 37, statements flattened = 5217 [2022-07-12 12:08:01,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 12:08:01,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 12:08:01,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 12:08:01,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 12:08:01,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:01" (1/1) ... [2022-07-12 12:08:01,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:01" (1/1) ... [2022-07-12 12:08:02,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:01" (1/1) ... [2022-07-12 12:08:02,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:01" (1/1) ... [2022-07-12 12:08:02,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:01" (1/1) ... [2022-07-12 12:08:02,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:01" (1/1) ... [2022-07-12 12:08:02,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:01" (1/1) ... [2022-07-12 12:08:02,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 12:08:02,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 12:08:02,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 12:08:02,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 12:08:02,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:01" (1/1) ... [2022-07-12 12:08:02,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:08:02,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:08:02,265 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) [2022-07-12 12:08:02,287 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 [2022-07-12 12:08:02,310 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_set_limit [2022-07-12 12:08:02,311 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_set_limit [2022-07-12 12:08:02,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 12:08:02,311 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-07-12 12:08:02,311 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-07-12 12:08:02,311 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-07-12 12:08:02,311 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-07-12 12:08:02,311 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_limit [2022-07-12 12:08:02,312 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_limit [2022-07-12 12:08:02,312 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_update_device [2022-07-12 12:08:02,312 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_update_device [2022-07-12 12:08:02,312 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_input [2022-07-12 12:08:02,312 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_input [2022-07-12 12:08:02,312 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_read_adc [2022-07-12 12:08:02,312 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_read_adc [2022-07-12 12:08:02,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 12:08:02,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 12:08:02,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_max16065_data [2022-07-12 12:08:02,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_max16065_data [2022-07-12 12:08:02,313 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_alarm [2022-07-12 12:08:02,313 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_alarm [2022-07-12 12:08:02,313 INFO L130 BoogieDeclarations]: Found specification of procedure LIMIT_TO_MV [2022-07-12 12:08:02,313 INFO L138 BoogieDeclarations]: Found implementation of procedure LIMIT_TO_MV [2022-07-12 12:08:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 12:08:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-12 12:08:02,314 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-12 12:08:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 12:08:02,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 12:08:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 12:08:02,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 12:08:02,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 12:08:02,315 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-12 12:08:02,315 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-12 12:08:02,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 12:08:02,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 12:08:02,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 12:08:02,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2022-07-12 12:08:02,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2022-07-12 12:08:02,316 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-07-12 12:08:02,316 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-07-12 12:08:02,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 12:08:02,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 12:08:02,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 12:08:02,316 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_cleanup [2022-07-12 12:08:02,317 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_cleanup [2022-07-12 12:08:02,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 12:08:02,317 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-07-12 12:08:02,317 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-07-12 12:08:02,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 12:08:02,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 12:08:02,318 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_file [2022-07-12 12:08:02,318 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_file [2022-07-12 12:08:02,318 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-12 12:08:02,318 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-12 12:08:02,972 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 12:08:02,974 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 12:08:07,630 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 12:08:07,643 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 12:08:07,644 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 12:08:07,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:08:07 BoogieIcfgContainer [2022-07-12 12:08:07,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 12:08:07,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 12:08:07,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 12:08:07,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 12:08:07,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:08:00" (1/3) ... [2022-07-12 12:08:07,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1870e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:08:07, skipping insertion in model container [2022-07-12 12:08:07,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:01" (2/3) ... [2022-07-12 12:08:07,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1870e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:08:07, skipping insertion in model container [2022-07-12 12:08:07,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:08:07" (3/3) ... [2022-07-12 12:08:07,657 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2022-07-12 12:08:07,670 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 12:08:07,670 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 12:08:07,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 12:08:07,761 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@388ab999, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@25094d2c [2022-07-12 12:08:07,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 12:08:07,769 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) [2022-07-12 12:08:07,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 12:08:07,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:07,797 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] [2022-07-12 12:08:07,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:07,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:07,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2019820294, now seen corresponding path program 1 times [2022-07-12 12:08:07,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:07,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129379159] [2022-07-12 12:08:07,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:07,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:08,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 12:08:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:08,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:08:08,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:08,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129379159] [2022-07-12 12:08:08,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129379159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:08,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:08,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:08:08,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652529029] [2022-07-12 12:08:08,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:08,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:08:08,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:08,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:08:08,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:08:08,696 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) [2022-07-12 12:08:10,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:10,187 INFO L93 Difference]: Finished difference Result 3401 states and 5976 transitions. [2022-07-12 12:08:10,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:08:10,190 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 [2022-07-12 12:08:10,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:10,225 INFO L225 Difference]: With dead ends: 3401 [2022-07-12 12:08:10,226 INFO L226 Difference]: Without dead ends: 2295 [2022-07-12 12:08:10,239 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 [2022-07-12 12:08:10,242 INFO L413 NwaCegarLoop]: 1976 mSDtfsCounter, 1952 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:10,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2083 Valid, 5135 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 12:08:10,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2022-07-12 12:08:10,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 2166. [2022-07-12 12:08:10,399 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) [2022-07-12 12:08:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 3547 transitions. [2022-07-12 12:08:10,413 INFO L78 Accepts]: Start accepts. Automaton has 2166 states and 3547 transitions. Word has length 33 [2022-07-12 12:08:10,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:10,413 INFO L495 AbstractCegarLoop]: Abstraction has 2166 states and 3547 transitions. [2022-07-12 12:08:10,414 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) [2022-07-12 12:08:10,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2166 states and 3547 transitions. [2022-07-12 12:08:10,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-12 12:08:10,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:10,418 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] [2022-07-12 12:08:10,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 12:08:10,419 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:10,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:10,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1851303095, now seen corresponding path program 1 times [2022-07-12 12:08:10,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:10,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002785375] [2022-07-12 12:08:10,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:10,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:10,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:08:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:10,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:10,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:08:10,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:10,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002785375] [2022-07-12 12:08:10,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002785375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:10,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:10,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:08:10,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161909927] [2022-07-12 12:08:10,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:10,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:08:10,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:10,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:08:10,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:08:10,834 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) [2022-07-12 12:08:12,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:12,107 INFO L93 Difference]: Finished difference Result 6708 states and 11239 transitions. [2022-07-12 12:08:12,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:08:12,108 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 [2022-07-12 12:08:12,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:12,138 INFO L225 Difference]: With dead ends: 6708 [2022-07-12 12:08:12,139 INFO L226 Difference]: Without dead ends: 4545 [2022-07-12 12:08:12,149 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 [2022-07-12 12:08:12,151 INFO L413 NwaCegarLoop]: 2058 mSDtfsCounter, 1944 mSDsluCounter, 3272 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2017 SdHoareTripleChecker+Valid, 5330 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:12,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2017 Valid, 5330 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 12:08:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2022-07-12 12:08:12,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 4302. [2022-07-12 12:08:12,314 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) [2022-07-12 12:08:12,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 7052 transitions. [2022-07-12 12:08:12,338 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 7052 transitions. Word has length 34 [2022-07-12 12:08:12,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:12,379 INFO L495 AbstractCegarLoop]: Abstraction has 4302 states and 7052 transitions. [2022-07-12 12:08:12,380 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) [2022-07-12 12:08:12,380 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 7052 transitions. [2022-07-12 12:08:12,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-12 12:08:12,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:12,382 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] [2022-07-12 12:08:12,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 12:08:12,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:12,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:12,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1553931897, now seen corresponding path program 1 times [2022-07-12 12:08:12,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:12,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753179646] [2022-07-12 12:08:12,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:12,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:08:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:08:12,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:12,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753179646] [2022-07-12 12:08:12,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753179646] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:12,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:12,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:08:12,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335188855] [2022-07-12 12:08:12,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:12,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:08:12,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:12,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:08:12,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:08:12,722 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) [2022-07-12 12:08:14,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:14,141 INFO L93 Difference]: Finished difference Result 13332 states and 22354 transitions. [2022-07-12 12:08:14,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:08:14,142 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 [2022-07-12 12:08:14,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:14,194 INFO L225 Difference]: With dead ends: 13332 [2022-07-12 12:08:14,195 INFO L226 Difference]: Without dead ends: 9033 [2022-07-12 12:08:14,211 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 [2022-07-12 12:08:14,212 INFO L413 NwaCegarLoop]: 2021 mSDtfsCounter, 1944 mSDsluCounter, 3248 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2074 SdHoareTripleChecker+Valid, 5269 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:14,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2074 Valid, 5269 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 12:08:14,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9033 states. [2022-07-12 12:08:14,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9033 to 8562. [2022-07-12 12:08:14,508 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) [2022-07-12 12:08:14,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8562 states to 8562 states and 14040 transitions. [2022-07-12 12:08:14,545 INFO L78 Accepts]: Start accepts. Automaton has 8562 states and 14040 transitions. Word has length 37 [2022-07-12 12:08:14,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:14,546 INFO L495 AbstractCegarLoop]: Abstraction has 8562 states and 14040 transitions. [2022-07-12 12:08:14,546 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) [2022-07-12 12:08:14,546 INFO L276 IsEmpty]: Start isEmpty. Operand 8562 states and 14040 transitions. [2022-07-12 12:08:14,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 12:08:14,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:14,549 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] [2022-07-12 12:08:14,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 12:08:14,549 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:14,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:14,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1378079213, now seen corresponding path program 1 times [2022-07-12 12:08:14,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:14,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254389377] [2022-07-12 12:08:14,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:14,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:14,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 12:08:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:14,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:08:14,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:14,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254389377] [2022-07-12 12:08:14,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254389377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:14,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:14,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:08:14,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667491748] [2022-07-12 12:08:14,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:14,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:08:14,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:14,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:08:14,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:08:14,889 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) [2022-07-12 12:08:16,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:16,368 INFO L93 Difference]: Finished difference Result 26544 states and 44514 transitions. [2022-07-12 12:08:16,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:08:16,369 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 [2022-07-12 12:08:16,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:16,480 INFO L225 Difference]: With dead ends: 26544 [2022-07-12 12:08:16,480 INFO L226 Difference]: Without dead ends: 17985 [2022-07-12 12:08:16,524 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 [2022-07-12 12:08:16,533 INFO L413 NwaCegarLoop]: 2139 mSDtfsCounter, 1933 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 5518 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:16,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1992 Valid, 5518 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 12:08:16,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17985 states. [2022-07-12 12:08:17,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17985 to 17058. [2022-07-12 12:08:17,248 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) [2022-07-12 12:08:17,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17058 states to 17058 states and 27972 transitions. [2022-07-12 12:08:17,529 INFO L78 Accepts]: Start accepts. Automaton has 17058 states and 27972 transitions. Word has length 41 [2022-07-12 12:08:17,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:17,529 INFO L495 AbstractCegarLoop]: Abstraction has 17058 states and 27972 transitions. [2022-07-12 12:08:17,530 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) [2022-07-12 12:08:17,530 INFO L276 IsEmpty]: Start isEmpty. Operand 17058 states and 27972 transitions. [2022-07-12 12:08:17,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-12 12:08:17,532 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:17,532 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] [2022-07-12 12:08:17,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 12:08:17,533 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:17,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:17,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1020050902, now seen corresponding path program 1 times [2022-07-12 12:08:17,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:17,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453083151] [2022-07-12 12:08:17,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:17,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:17,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 12:08:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:17,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 12:08:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:08:17,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:17,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453083151] [2022-07-12 12:08:17,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453083151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:17,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:17,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:08:17,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072049214] [2022-07-12 12:08:17,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:17,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:08:17,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:17,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:08:17,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:08:17,951 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) [2022-07-12 12:08:19,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:19,800 INFO L93 Difference]: Finished difference Result 52832 states and 88582 transitions. [2022-07-12 12:08:19,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:08:19,801 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 [2022-07-12 12:08:19,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:20,011 INFO L225 Difference]: With dead ends: 52832 [2022-07-12 12:08:20,011 INFO L226 Difference]: Without dead ends: 35777 [2022-07-12 12:08:20,068 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 [2022-07-12 12:08:20,069 INFO L413 NwaCegarLoop]: 2170 mSDtfsCounter, 1916 mSDsluCounter, 3396 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 5566 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:20,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1974 Valid, 5566 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 12:08:20,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35777 states. [2022-07-12 12:08:21,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35777 to 33938. [2022-07-12 12:08:21,462 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) [2022-07-12 12:08:21,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33938 states to 33938 states and 55636 transitions. [2022-07-12 12:08:21,622 INFO L78 Accepts]: Start accepts. Automaton has 33938 states and 55636 transitions. Word has length 46 [2022-07-12 12:08:21,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:21,624 INFO L495 AbstractCegarLoop]: Abstraction has 33938 states and 55636 transitions. [2022-07-12 12:08:21,625 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) [2022-07-12 12:08:21,625 INFO L276 IsEmpty]: Start isEmpty. Operand 33938 states and 55636 transitions. [2022-07-12 12:08:21,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 12:08:21,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:21,627 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] [2022-07-12 12:08:21,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 12:08:21,628 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:21,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:21,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1204380704, now seen corresponding path program 1 times [2022-07-12 12:08:21,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:21,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350203412] [2022-07-12 12:08:21,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:21,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 12:08:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 12:08:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:08:22,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:22,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350203412] [2022-07-12 12:08:22,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350203412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:22,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:22,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:08:22,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351932135] [2022-07-12 12:08:22,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:22,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:08:22,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:22,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:08:22,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:08:22,100 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) [2022-07-12 12:08:24,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:24,635 INFO L93 Difference]: Finished difference Result 105136 states and 176214 transitions. [2022-07-12 12:08:24,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:08:24,635 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 [2022-07-12 12:08:24,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:25,121 INFO L225 Difference]: With dead ends: 105136 [2022-07-12 12:08:25,122 INFO L226 Difference]: Without dead ends: 71201 [2022-07-12 12:08:25,419 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 [2022-07-12 12:08:25,421 INFO L413 NwaCegarLoop]: 2164 mSDtfsCounter, 1938 mSDsluCounter, 3414 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1998 SdHoareTripleChecker+Valid, 5578 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:25,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1998 Valid, 5578 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 12:08:25,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71201 states. [2022-07-12 12:08:27,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71201 to 67538. [2022-07-12 12:08:28,052 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) [2022-07-12 12:08:28,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67538 states to 67538 states and 110676 transitions. [2022-07-12 12:08:28,749 INFO L78 Accepts]: Start accepts. Automaton has 67538 states and 110676 transitions. Word has length 41 [2022-07-12 12:08:28,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:28,750 INFO L495 AbstractCegarLoop]: Abstraction has 67538 states and 110676 transitions. [2022-07-12 12:08:28,750 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) [2022-07-12 12:08:28,750 INFO L276 IsEmpty]: Start isEmpty. Operand 67538 states and 110676 transitions. [2022-07-12 12:08:28,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-12 12:08:28,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:28,753 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] [2022-07-12 12:08:28,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 12:08:28,754 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:28,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:28,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1886641317, now seen corresponding path program 1 times [2022-07-12 12:08:28,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:28,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931498695] [2022-07-12 12:08:28,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:28,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:29,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 12:08:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:29,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:29,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 12:08:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:08:29,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:29,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931498695] [2022-07-12 12:08:29,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931498695] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:29,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:29,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:08:29,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583595339] [2022-07-12 12:08:29,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:29,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:08:29,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:29,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:08:29,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:08:29,031 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) [2022-07-12 12:08:32,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:32,814 INFO L93 Difference]: Finished difference Result 209264 states and 350582 transitions. [2022-07-12 12:08:32,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:08:32,814 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 [2022-07-12 12:08:32,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:33,852 INFO L225 Difference]: With dead ends: 209264 [2022-07-12 12:08:33,852 INFO L226 Difference]: Without dead ends: 141729 [2022-07-12 12:08:33,996 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 [2022-07-12 12:08:33,997 INFO L413 NwaCegarLoop]: 2070 mSDtfsCounter, 1958 mSDsluCounter, 3304 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:33,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2086 Valid, 5374 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 12:08:34,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141729 states. [2022-07-12 12:08:38,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141729 to 134418. [2022-07-12 12:08:38,158 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) [2022-07-12 12:08:38,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134418 states to 134418 states and 220180 transitions. [2022-07-12 12:08:38,851 INFO L78 Accepts]: Start accepts. Automaton has 134418 states and 220180 transitions. Word has length 43 [2022-07-12 12:08:38,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:38,851 INFO L495 AbstractCegarLoop]: Abstraction has 134418 states and 220180 transitions. [2022-07-12 12:08:38,852 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) [2022-07-12 12:08:38,852 INFO L276 IsEmpty]: Start isEmpty. Operand 134418 states and 220180 transitions. [2022-07-12 12:08:38,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-12 12:08:38,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:38,856 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] [2022-07-12 12:08:38,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 12:08:38,857 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:38,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:38,857 INFO L85 PathProgramCache]: Analyzing trace with hash -259417434, now seen corresponding path program 1 times [2022-07-12 12:08:38,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:38,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629775206] [2022-07-12 12:08:38,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:38,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:39,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:08:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:39,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:39,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 12:08:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:39,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:08:39,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:39,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629775206] [2022-07-12 12:08:39,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629775206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:39,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:39,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:08:39,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685182411] [2022-07-12 12:08:39,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:39,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:08:39,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:39,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:08:39,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:08:39,746 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) [2022-07-12 12:08:45,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:45,829 INFO L93 Difference]: Finished difference Result 416560 states and 697526 transitions. [2022-07-12 12:08:45,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:08:45,830 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 [2022-07-12 12:08:45,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:47,593 INFO L225 Difference]: With dead ends: 416560 [2022-07-12 12:08:47,593 INFO L226 Difference]: Without dead ends: 282145 [2022-07-12 12:08:47,980 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 [2022-07-12 12:08:47,981 INFO L413 NwaCegarLoop]: 2073 mSDtfsCounter, 1937 mSDsluCounter, 3276 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2065 SdHoareTripleChecker+Valid, 5349 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:47,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2065 Valid, 5349 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 12:08:48,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282145 states. [2022-07-12 12:08:55,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282145 to 267538. [2022-07-12 12:08:56,278 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) [2022-07-12 12:08:58,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267538 states to 267538 states and 438036 transitions. [2022-07-12 12:08:58,169 INFO L78 Accepts]: Start accepts. Automaton has 267538 states and 438036 transitions. Word has length 47 [2022-07-12 12:08:58,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:58,170 INFO L495 AbstractCegarLoop]: Abstraction has 267538 states and 438036 transitions. [2022-07-12 12:08:58,171 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) [2022-07-12 12:08:58,171 INFO L276 IsEmpty]: Start isEmpty. Operand 267538 states and 438036 transitions. [2022-07-12 12:08:58,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-12 12:08:58,173 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:58,174 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] [2022-07-12 12:08:58,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 12:08:58,174 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:58,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:58,175 INFO L85 PathProgramCache]: Analyzing trace with hash 599135497, now seen corresponding path program 1 times [2022-07-12 12:08:58,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:58,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122477281] [2022-07-12 12:08:58,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:58,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:58,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:08:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:58,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:58,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:08:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:08:58,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:58,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122477281] [2022-07-12 12:08:58,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122477281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:58,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:58,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:08:58,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783222386] [2022-07-12 12:08:58,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:58,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:08:58,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:58,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:08:58,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:08:58,494 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)