./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 791161d1 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-?-791161d [2022-07-22 23:24:35,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:24:35,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:24:35,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:24:35,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:24:35,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:24:35,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:24:35,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:24:35,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:24:35,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:24:35,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:24:35,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:24:35,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:24:35,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:24:35,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:24:35,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:24:35,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:24:35,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:24:35,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:24:35,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:24:35,655 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:24:35,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:24:35,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:24:35,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:24:35,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:24:35,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:24:35,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:24:35,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:24:35,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:24:35,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:24:35,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:24:35,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:24:35,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:24:35,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:24:35,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:24:35,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:24:35,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:24:35,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:24:35,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:24:35,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:24:35,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:24:35,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:24:35,685 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:24:35,717 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:24:35,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:24:35,719 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:24:35,719 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:24:35,720 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:24:35,720 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:24:35,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:24:35,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:24:35,721 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:24:35,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:24:35,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:24:35,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:24:35,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:24:35,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:24:35,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:24:35,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:24:35,723 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:24:35,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:24:35,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:24:35,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:24:35,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:24:35,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:24:35,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:24:35,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:24:35,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:24:35,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:24:35,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:24:35,726 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:24:35,726 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:24:35,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:24:35,727 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ad6d1ed8310d8e3264189ac87472d58c77647a0c63d75779b5974e889987542 [2022-07-22 23:24:36,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:24:36,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:24:36,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:24:36,050 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:24:36,050 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:24:36,052 INFO L432 ainManager$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 [2022-07-22 23:24:36,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f92d3aa08/a12ddb3636134865b1297a39bf4f20ba/FLAGf0b026871 [2022-07-22 23:24:36,743 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:24:36,744 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 [2022-07-22 23:24:36,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f92d3aa08/a12ddb3636134865b1297a39bf4f20ba/FLAGf0b026871 [2022-07-22 23:24:36,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f92d3aa08/a12ddb3636134865b1297a39bf4f20ba [2022-07-22 23:24:36,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:24:36,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:24:36,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:24:36,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:24:36,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:24:36,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:24:36" (1/1) ... [2022-07-22 23:24:36,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29c446e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:36, skipping insertion in model container [2022-07-22 23:24:36,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:24:36" (1/1) ... [2022-07-22 23:24:36,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:24:37,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:24:37,860 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] [2022-07-22 23:24:37,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:24:38,022 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:24:38,195 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] [2022-07-22 23:24:38,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:24:38,432 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:24:38,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:38 WrapperNode [2022-07-22 23:24:38,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:24:38,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:24:38,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:24:38,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:24:38,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:38" (1/1) ... [2022-07-22 23:24:38,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:38" (1/1) ... [2022-07-22 23:24:38,744 INFO L137 Inliner]: procedures = 115, calls = 2009, calls flagged for inlining = 45, calls inlined = 37, statements flattened = 5217 [2022-07-22 23:24:38,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:24:38,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:24:38,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:24:38,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:24:38,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:38" (1/1) ... [2022-07-22 23:24:38,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:38" (1/1) ... [2022-07-22 23:24:38,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:38" (1/1) ... [2022-07-22 23:24:38,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:38" (1/1) ... [2022-07-22 23:24:38,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:38" (1/1) ... [2022-07-22 23:24:38,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:38" (1/1) ... [2022-07-22 23:24:38,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:38" (1/1) ... [2022-07-22 23:24:38,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:24:39,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:24:39,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:24:39,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:24:39,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:38" (1/1) ... [2022-07-22 23:24:39,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:24:39,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:24:39,037 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) [2022-07-22 23:24:39,062 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 [2022-07-22 23:24:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_set_limit [2022-07-22 23:24:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_set_limit [2022-07-22 23:24:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:24:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-07-22 23:24:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-07-22 23:24:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-07-22 23:24:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-07-22 23:24:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_limit [2022-07-22 23:24:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_limit [2022-07-22 23:24:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_update_device [2022-07-22 23:24:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_update_device [2022-07-22 23:24:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_input [2022-07-22 23:24:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_input [2022-07-22 23:24:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_read_adc [2022-07-22 23:24:39,082 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_read_adc [2022-07-22 23:24:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:24:39,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:24:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_max16065_data [2022-07-22 23:24:39,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_max16065_data [2022-07-22 23:24:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_alarm [2022-07-22 23:24:39,082 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_alarm [2022-07-22 23:24:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure LIMIT_TO_MV [2022-07-22 23:24:39,083 INFO L138 BoogieDeclarations]: Found implementation of procedure LIMIT_TO_MV [2022-07-22 23:24:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:24:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-22 23:24:39,083 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-22 23:24:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:24:39,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:24:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:24:39,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:24:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:24:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-22 23:24:39,084 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-22 23:24:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:24:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:24:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:24:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2022-07-22 23:24:39,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2022-07-22 23:24:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-07-22 23:24:39,085 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-07-22 23:24:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:24:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:24:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:24:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_cleanup [2022-07-22 23:24:39,086 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_cleanup [2022-07-22 23:24:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:24:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-07-22 23:24:39,086 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-07-22 23:24:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:24:39,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:24:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_file [2022-07-22 23:24:39,087 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_file [2022-07-22 23:24:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-22 23:24:39,087 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-22 23:24:39,757 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:24:39,759 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:24:43,874 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:24:43,896 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:24:43,897 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 23:24:43,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:24:43 BoogieIcfgContainer [2022-07-22 23:24:43,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:24:43,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:24:43,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:24:43,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:24:43,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:24:36" (1/3) ... [2022-07-22 23:24:43,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20334611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:24:43, skipping insertion in model container [2022-07-22 23:24:43,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:38" (2/3) ... [2022-07-22 23:24:43,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20334611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:24:43, skipping insertion in model container [2022-07-22 23:24:43,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:24:43" (3/3) ... [2022-07-22 23:24:43,911 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2022-07-22 23:24:43,924 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:24:43,925 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:24:44,021 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:24:44,026 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@2dfabba5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3cb11379 [2022-07-22 23:24:44,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:24:44,034 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) [2022-07-22 23:24:44,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-22 23:24:44,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:44,049 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] [2022-07-22 23:24:44,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:44,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:44,056 INFO L85 PathProgramCache]: Analyzing trace with hash -2019820294, now seen corresponding path program 1 times [2022-07-22 23:24:44,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:44,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619660940] [2022-07-22 23:24:44,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:44,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:44,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 23:24:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:44,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:45,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:45,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:45,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619660940] [2022-07-22 23:24:45,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619660940] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:45,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:45,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:45,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166681022] [2022-07-22 23:24:45,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:45,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:45,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:45,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:45,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:45,057 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) [2022-07-22 23:24:46,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:46,721 INFO L93 Difference]: Finished difference Result 3401 states and 5976 transitions. [2022-07-22 23:24:46,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:46,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-07-22 23:24:46,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:46,759 INFO L225 Difference]: With dead ends: 3401 [2022-07-22 23:24:46,760 INFO L226 Difference]: Without dead ends: 2295 [2022-07-22 23:24:46,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:24:46,775 INFO L413 NwaCegarLoop]: 2050 mSDtfsCounter, 1952 mSDsluCounter, 3308 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 5358 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:46,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2036 Valid, 5358 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 23:24:46,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2022-07-22 23:24:46,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 2166. [2022-07-22 23:24:46,959 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) [2022-07-22 23:24:46,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 3547 transitions. [2022-07-22 23:24:46,973 INFO L78 Accepts]: Start accepts. Automaton has 2166 states and 3547 transitions. Word has length 33 [2022-07-22 23:24:46,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:46,974 INFO L495 AbstractCegarLoop]: Abstraction has 2166 states and 3547 transitions. [2022-07-22 23:24:46,974 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) [2022-07-22 23:24:46,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2166 states and 3547 transitions. [2022-07-22 23:24:46,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-22 23:24:46,981 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:46,982 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] [2022-07-22 23:24:46,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:24:46,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:46,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:46,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1851303095, now seen corresponding path program 1 times [2022-07-22 23:24:46,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:46,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079391202] [2022-07-22 23:24:46,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:46,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:47,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:24:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:47,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:47,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:47,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:47,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079391202] [2022-07-22 23:24:47,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079391202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:47,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:47,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:47,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49670806] [2022-07-22 23:24:47,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:47,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:47,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:47,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:47,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:47,423 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) [2022-07-22 23:24:48,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:48,723 INFO L93 Difference]: Finished difference Result 6708 states and 11239 transitions. [2022-07-22 23:24:48,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:48,732 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 [2022-07-22 23:24:48,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:48,776 INFO L225 Difference]: With dead ends: 6708 [2022-07-22 23:24:48,776 INFO L226 Difference]: Without dead ends: 4545 [2022-07-22 23:24:48,791 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 [2022-07-22 23:24:48,793 INFO L413 NwaCegarLoop]: 2059 mSDtfsCounter, 1944 mSDsluCounter, 3273 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2016 SdHoareTripleChecker+Valid, 5332 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:48,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2016 Valid, 5332 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 23:24:48,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2022-07-22 23:24:48,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 4302. [2022-07-22 23:24:48,995 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) [2022-07-22 23:24:49,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 7052 transitions. [2022-07-22 23:24:49,026 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 7052 transitions. Word has length 34 [2022-07-22 23:24:49,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:49,026 INFO L495 AbstractCegarLoop]: Abstraction has 4302 states and 7052 transitions. [2022-07-22 23:24:49,026 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) [2022-07-22 23:24:49,027 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 7052 transitions. [2022-07-22 23:24:49,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-22 23:24:49,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:49,030 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] [2022-07-22 23:24:49,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:24:49,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:49,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:49,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1553931897, now seen corresponding path program 1 times [2022-07-22 23:24:49,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:49,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827505750] [2022-07-22 23:24:49,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:49,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:49,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:24:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:49,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:49,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:49,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827505750] [2022-07-22 23:24:49,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827505750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:49,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:49,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:49,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161226635] [2022-07-22 23:24:49,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:49,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:49,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:49,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:49,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:49,496 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) [2022-07-22 23:24:50,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:50,926 INFO L93 Difference]: Finished difference Result 13332 states and 22354 transitions. [2022-07-22 23:24:50,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:50,927 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 [2022-07-22 23:24:50,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:50,988 INFO L225 Difference]: With dead ends: 13332 [2022-07-22 23:24:50,988 INFO L226 Difference]: Without dead ends: 9033 [2022-07-22 23:24:51,012 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 [2022-07-22 23:24:51,013 INFO L413 NwaCegarLoop]: 2110 mSDtfsCounter, 1939 mSDsluCounter, 3358 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1999 SdHoareTripleChecker+Valid, 5468 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:51,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1999 Valid, 5468 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 23:24:51,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9033 states. [2022-07-22 23:24:51,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9033 to 8562. [2022-07-22 23:24:51,395 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) [2022-07-22 23:24:51,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8562 states to 8562 states and 14040 transitions. [2022-07-22 23:24:51,442 INFO L78 Accepts]: Start accepts. Automaton has 8562 states and 14040 transitions. Word has length 37 [2022-07-22 23:24:51,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:51,443 INFO L495 AbstractCegarLoop]: Abstraction has 8562 states and 14040 transitions. [2022-07-22 23:24:51,443 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) [2022-07-22 23:24:51,443 INFO L276 IsEmpty]: Start isEmpty. Operand 8562 states and 14040 transitions. [2022-07-22 23:24:51,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 23:24:51,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:51,447 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] [2022-07-22 23:24:51,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 23:24:51,447 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:51,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:51,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1378079213, now seen corresponding path program 1 times [2022-07-22 23:24:51,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:51,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239772419] [2022-07-22 23:24:51,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:51,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:51,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 23:24:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:51,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:51,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:51,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:51,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239772419] [2022-07-22 23:24:51,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239772419] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:51,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:51,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:51,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270806831] [2022-07-22 23:24:51,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:51,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:51,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:51,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:51,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:51,814 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) [2022-07-22 23:24:53,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:53,396 INFO L93 Difference]: Finished difference Result 26544 states and 44514 transitions. [2022-07-22 23:24:53,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:53,397 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 [2022-07-22 23:24:53,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:53,530 INFO L225 Difference]: With dead ends: 26544 [2022-07-22 23:24:53,530 INFO L226 Difference]: Without dead ends: 17985 [2022-07-22 23:24:53,584 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 [2022-07-22 23:24:53,592 INFO L413 NwaCegarLoop]: 2059 mSDtfsCounter, 1942 mSDsluCounter, 3261 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 5320 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:53,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2025 Valid, 5320 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 23:24:53,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17985 states. [2022-07-22 23:24:54,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17985 to 17058. [2022-07-22 23:24:54,403 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) [2022-07-22 23:24:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17058 states to 17058 states and 27972 transitions. [2022-07-22 23:24:54,484 INFO L78 Accepts]: Start accepts. Automaton has 17058 states and 27972 transitions. Word has length 41 [2022-07-22 23:24:54,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:54,485 INFO L495 AbstractCegarLoop]: Abstraction has 17058 states and 27972 transitions. [2022-07-22 23:24:54,486 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) [2022-07-22 23:24:54,486 INFO L276 IsEmpty]: Start isEmpty. Operand 17058 states and 27972 transitions. [2022-07-22 23:24:54,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-22 23:24:54,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:54,490 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] [2022-07-22 23:24:54,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:24:54,490 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:54,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:54,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1020050902, now seen corresponding path program 1 times [2022-07-22 23:24:54,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:54,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821418460] [2022-07-22 23:24:54,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:54,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:54,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 23:24:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:54,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:54,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 23:24:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:54,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:54,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:54,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821418460] [2022-07-22 23:24:54,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821418460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:54,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:54,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:54,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406669948] [2022-07-22 23:24:54,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:54,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:54,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:54,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:54,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:54,955 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) [2022-07-22 23:24:56,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:56,926 INFO L93 Difference]: Finished difference Result 52832 states and 88582 transitions. [2022-07-22 23:24:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:56,927 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 [2022-07-22 23:24:56,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:57,134 INFO L225 Difference]: With dead ends: 52832 [2022-07-22 23:24:57,134 INFO L226 Difference]: Without dead ends: 35777 [2022-07-22 23:24:57,219 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 [2022-07-22 23:24:57,220 INFO L413 NwaCegarLoop]: 2050 mSDtfsCounter, 1957 mSDsluCounter, 3336 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2085 SdHoareTripleChecker+Valid, 5386 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:57,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2085 Valid, 5386 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 23:24:57,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35777 states. [2022-07-22 23:24:58,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35777 to 33938. [2022-07-22 23:24:58,768 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) [2022-07-22 23:24:58,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33938 states to 33938 states and 55636 transitions. [2022-07-22 23:24:58,897 INFO L78 Accepts]: Start accepts. Automaton has 33938 states and 55636 transitions. Word has length 46 [2022-07-22 23:24:58,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:58,899 INFO L495 AbstractCegarLoop]: Abstraction has 33938 states and 55636 transitions. [2022-07-22 23:24:58,899 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) [2022-07-22 23:24:58,899 INFO L276 IsEmpty]: Start isEmpty. Operand 33938 states and 55636 transitions. [2022-07-22 23:24:58,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 23:24:58,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:58,901 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] [2022-07-22 23:24:58,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:24:58,902 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:58,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:58,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1204380704, now seen corresponding path program 1 times [2022-07-22 23:24:58,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:58,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985555336] [2022-07-22 23:24:58,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:58,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:59,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 23:24:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:59,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:59,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:24:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:59,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:59,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985555336] [2022-07-22 23:24:59,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985555336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:59,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:59,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:59,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57336733] [2022-07-22 23:24:59,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:59,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:59,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:59,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:59,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:59,215 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) [2022-07-22 23:25:02,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:02,040 INFO L93 Difference]: Finished difference Result 105136 states and 176214 transitions. [2022-07-22 23:25:02,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:25:02,041 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 [2022-07-22 23:25:02,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:02,469 INFO L225 Difference]: With dead ends: 105136 [2022-07-22 23:25:02,469 INFO L226 Difference]: Without dead ends: 71201 [2022-07-22 23:25:02,568 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 [2022-07-22 23:25:02,570 INFO L413 NwaCegarLoop]: 2072 mSDtfsCounter, 1938 mSDsluCounter, 3275 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2043 SdHoareTripleChecker+Valid, 5347 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 [2022-07-22 23:25:02,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2043 Valid, 5347 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 23:25:02,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71201 states. [2022-07-22 23:25:05,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71201 to 67538. [2022-07-22 23:25:05,706 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) [2022-07-22 23:25:06,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67538 states to 67538 states and 110676 transitions. [2022-07-22 23:25:06,039 INFO L78 Accepts]: Start accepts. Automaton has 67538 states and 110676 transitions. Word has length 41 [2022-07-22 23:25:06,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:06,040 INFO L495 AbstractCegarLoop]: Abstraction has 67538 states and 110676 transitions. [2022-07-22 23:25:06,040 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) [2022-07-22 23:25:06,040 INFO L276 IsEmpty]: Start isEmpty. Operand 67538 states and 110676 transitions. [2022-07-22 23:25:06,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-22 23:25:06,043 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:06,043 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] [2022-07-22 23:25:06,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:25:06,044 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:06,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:06,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1886641317, now seen corresponding path program 1 times [2022-07-22 23:25:06,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:06,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075972864] [2022-07-22 23:25:06,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:06,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:06,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:25:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:06,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:06,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 23:25:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:06,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:25:06,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:06,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075972864] [2022-07-22 23:25:06,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075972864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:06,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:06,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:25:06,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794716164] [2022-07-22 23:25:06,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:06,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:25:06,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:06,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:25:06,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:25:06,531 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) [2022-07-22 23:25:09,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:09,855 INFO L93 Difference]: Finished difference Result 209264 states and 350582 transitions. [2022-07-22 23:25:09,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:25:09,856 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 [2022-07-22 23:25:09,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:10,757 INFO L225 Difference]: With dead ends: 209264 [2022-07-22 23:25:10,757 INFO L226 Difference]: Without dead ends: 141729 [2022-07-22 23:25:10,910 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 [2022-07-22 23:25:10,911 INFO L413 NwaCegarLoop]: 2068 mSDtfsCounter, 1958 mSDsluCounter, 3302 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2088 SdHoareTripleChecker+Valid, 5370 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 [2022-07-22 23:25:10,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2088 Valid, 5370 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 23:25:11,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141729 states. [2022-07-22 23:25:15,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141729 to 134418. [2022-07-22 23:25:15,593 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) [2022-07-22 23:25:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134418 states to 134418 states and 220180 transitions. [2022-07-22 23:25:16,818 INFO L78 Accepts]: Start accepts. Automaton has 134418 states and 220180 transitions. Word has length 43 [2022-07-22 23:25:16,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:16,819 INFO L495 AbstractCegarLoop]: Abstraction has 134418 states and 220180 transitions. [2022-07-22 23:25:16,819 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) [2022-07-22 23:25:16,820 INFO L276 IsEmpty]: Start isEmpty. Operand 134418 states and 220180 transitions. [2022-07-22 23:25:16,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-22 23:25:16,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:16,824 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] [2022-07-22 23:25:16,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 23:25:16,825 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:16,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:16,825 INFO L85 PathProgramCache]: Analyzing trace with hash -259417434, now seen corresponding path program 1 times [2022-07-22 23:25:16,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:16,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619479985] [2022-07-22 23:25:16,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:16,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:17,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:25:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:17,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:17,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 23:25:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:25:17,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:17,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619479985] [2022-07-22 23:25:17,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619479985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:17,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:17,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:25:17,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933769326] [2022-07-22 23:25:17,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:17,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:25:17,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:17,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:25:17,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:25:17,145 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) [2022-07-22 23:25:23,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:23,721 INFO L93 Difference]: Finished difference Result 416560 states and 697526 transitions. [2022-07-22 23:25:23,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:25:23,722 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 [2022-07-22 23:25:23,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:25,987 INFO L225 Difference]: With dead ends: 416560 [2022-07-22 23:25:25,987 INFO L226 Difference]: Without dead ends: 282145 [2022-07-22 23:25:26,452 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 [2022-07-22 23:25:26,453 INFO L413 NwaCegarLoop]: 2093 mSDtfsCounter, 1934 mSDsluCounter, 3295 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2043 SdHoareTripleChecker+Valid, 5388 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:26,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2043 Valid, 5388 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 23:25:26,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282145 states. [2022-07-22 23:25:35,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282145 to 267538. [2022-07-22 23:25:36,072 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) [2022-07-22 23:25:37,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267538 states to 267538 states and 438036 transitions. [2022-07-22 23:25:37,907 INFO L78 Accepts]: Start accepts. Automaton has 267538 states and 438036 transitions. Word has length 47 [2022-07-22 23:25:37,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:37,907 INFO L495 AbstractCegarLoop]: Abstraction has 267538 states and 438036 transitions. [2022-07-22 23:25:37,907 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) [2022-07-22 23:25:37,908 INFO L276 IsEmpty]: Start isEmpty. Operand 267538 states and 438036 transitions. [2022-07-22 23:25:37,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-22 23:25:37,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:37,909 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] [2022-07-22 23:25:37,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 23:25:37,910 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash 599135497, now seen corresponding path program 1 times [2022-07-22 23:25:37,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:37,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299873690] [2022-07-22 23:25:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:37,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:38,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:38,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:38,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:25:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:38,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:25:38,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:38,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299873690] [2022-07-22 23:25:38,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299873690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:38,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:38,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:25:38,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299703801] [2022-07-22 23:25:38,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:38,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:25:38,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:38,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:25:38,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:25:38,195 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)