./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 0f8a17c6 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 0.2.1-dev-0f8a17c [2021-11-16 23:49:44,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-16 23:49:44,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-16 23:49:44,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-16 23:49:44,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-16 23:49:44,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-16 23:49:44,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-16 23:49:44,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-16 23:49:44,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-16 23:49:44,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-16 23:49:44,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-16 23:49:44,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-16 23:49:44,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-16 23:49:44,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-16 23:49:44,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-16 23:49:44,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-16 23:49:44,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-16 23:49:44,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-16 23:49:44,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-16 23:49:44,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-16 23:49:44,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-16 23:49:44,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-16 23:49:44,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-16 23:49:44,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-16 23:49:44,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-16 23:49:44,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-16 23:49:44,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-16 23:49:44,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-16 23:49:44,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-16 23:49:44,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-16 23:49:44,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-16 23:49:44,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-16 23:49:44,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-16 23:49:44,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-16 23:49:44,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-16 23:49:44,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-16 23:49:44,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-16 23:49:44,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-16 23:49:44,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-16 23:49:44,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-16 23:49:44,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-16 23:49:44,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-16 23:49:44,858 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-16 23:49:44,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-16 23:49:44,859 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-16 23:49:44,859 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-16 23:49:44,860 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-16 23:49:44,860 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-16 23:49:44,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-16 23:49:44,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-16 23:49:44,861 INFO L138 SettingsManager]: * Use SBE=true [2021-11-16 23:49:44,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-16 23:49:44,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-16 23:49:44,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-16 23:49:44,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-16 23:49:44,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-16 23:49:44,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-16 23:49:44,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-16 23:49:44,863 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-16 23:49:44,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-16 23:49:44,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-16 23:49:44,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-16 23:49:44,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-16 23:49:44,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 23:49:44,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-16 23:49:44,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-16 23:49:44,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-16 23:49:44,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-16 23:49:44,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-16 23:49:44,865 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-16 23:49:44,865 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-16 23:49:44,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-16 23:49:44,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-16 23:49:44,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ad6d1ed8310d8e3264189ac87472d58c77647a0c63d75779b5974e889987542 [2021-11-16 23:49:45,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-16 23:49:45,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-16 23:49:45,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-16 23:49:45,106 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-16 23:49:45,106 INFO L275 PluginConnector]: CDTParser initialized [2021-11-16 23:49:45,107 INFO L432 ainManager$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 [2021-11-16 23:49:45,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/161f7fc20/52ea072594924228994aba3fb9ebcbe8/FLAG2ad74f7c1 [2021-11-16 23:49:45,740 INFO L306 CDTParser]: Found 1 translation units. [2021-11-16 23:49:45,740 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 [2021-11-16 23:49:45,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/161f7fc20/52ea072594924228994aba3fb9ebcbe8/FLAG2ad74f7c1 [2021-11-16 23:49:46,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/161f7fc20/52ea072594924228994aba3fb9ebcbe8 [2021-11-16 23:49:46,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-16 23:49:46,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-16 23:49:46,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-16 23:49:46,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-16 23:49:46,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-16 23:49:46,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:49:46" (1/1) ... [2021-11-16 23:49:46,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c31fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:46, skipping insertion in model container [2021-11-16 23:49:46,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:49:46" (1/1) ... [2021-11-16 23:49:46,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-16 23:49:46,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-16 23:49:46,881 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] [2021-11-16 23:49:46,986 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 23:49:47,056 INFO L203 MainTranslator]: Completed pre-run [2021-11-16 23:49:47,227 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] [2021-11-16 23:49:47,234 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 23:49:47,372 INFO L208 MainTranslator]: Completed translation [2021-11-16 23:49:47,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:47 WrapperNode [2021-11-16 23:49:47,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-16 23:49:47,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-16 23:49:47,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-16 23:49:47,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-16 23:49:47,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:47" (1/1) ... [2021-11-16 23:49:47,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:47" (1/1) ... [2021-11-16 23:49:47,563 INFO L137 Inliner]: procedures = 115, calls = 2009, calls flagged for inlining = 45, calls inlined = 37, statements flattened = 5127 [2021-11-16 23:49:47,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-16 23:49:47,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-16 23:49:47,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-16 23:49:47,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-16 23:49:47,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:47" (1/1) ... [2021-11-16 23:49:47,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:47" (1/1) ... [2021-11-16 23:49:47,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:47" (1/1) ... [2021-11-16 23:49:47,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:47" (1/1) ... [2021-11-16 23:49:47,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:47" (1/1) ... [2021-11-16 23:49:47,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:47" (1/1) ... [2021-11-16 23:49:47,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:47" (1/1) ... [2021-11-16 23:49:47,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-16 23:49:47,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-16 23:49:47,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-16 23:49:47,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-16 23:49:47,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:47" (1/1) ... [2021-11-16 23:49:47,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 23:49:47,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 23:49:47,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-16 23:49:47,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-16 23:49:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_set_limit [2021-11-16 23:49:47,809 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_set_limit [2021-11-16 23:49:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-16 23:49:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-16 23:49:47,809 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-16 23:49:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-11-16 23:49:47,809 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-11-16 23:49:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_limit [2021-11-16 23:49:47,810 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_limit [2021-11-16 23:49:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_update_device [2021-11-16 23:49:47,810 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_update_device [2021-11-16 23:49:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_input [2021-11-16 23:49:47,810 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_input [2021-11-16 23:49:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_read_adc [2021-11-16 23:49:47,810 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_read_adc [2021-11-16 23:49:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-16 23:49:47,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-16 23:49:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_max16065_data [2021-11-16 23:49:47,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_max16065_data [2021-11-16 23:49:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_alarm [2021-11-16 23:49:47,811 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_alarm [2021-11-16 23:49:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure LIMIT_TO_MV [2021-11-16 23:49:47,811 INFO L138 BoogieDeclarations]: Found implementation of procedure LIMIT_TO_MV [2021-11-16 23:49:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-16 23:49:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-16 23:49:47,812 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-16 23:49:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-16 23:49:47,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-16 23:49:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-16 23:49:47,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-16 23:49:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-16 23:49:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-16 23:49:47,813 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-16 23:49:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-16 23:49:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-16 23:49:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-16 23:49:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2021-11-16 23:49:47,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2021-11-16 23:49:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2021-11-16 23:49:47,814 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2021-11-16 23:49:47,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-16 23:49:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-16 23:49:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-16 23:49:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_cleanup [2021-11-16 23:49:47,851 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_cleanup [2021-11-16 23:49:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-16 23:49:47,852 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2021-11-16 23:49:47,852 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2021-11-16 23:49:47,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-16 23:49:47,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-16 23:49:47,852 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_file [2021-11-16 23:49:47,852 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_file [2021-11-16 23:49:47,852 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-16 23:49:47,852 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-16 23:49:48,388 INFO L236 CfgBuilder]: Building ICFG [2021-11-16 23:49:48,390 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-16 23:49:54,681 INFO L277 CfgBuilder]: Performing block encoding [2021-11-16 23:49:54,691 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-16 23:49:54,691 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-16 23:49:54,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:49:54 BoogieIcfgContainer [2021-11-16 23:49:54,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-16 23:49:54,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-16 23:49:54,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-16 23:49:54,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-16 23:49:54,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:49:46" (1/3) ... [2021-11-16 23:49:54,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41959ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:49:54, skipping insertion in model container [2021-11-16 23:49:54,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:47" (2/3) ... [2021-11-16 23:49:54,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41959ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:49:54, skipping insertion in model container [2021-11-16 23:49:54,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:49:54" (3/3) ... [2021-11-16 23:49:54,700 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2021-11-16 23:49:54,703 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-16 23:49:54,703 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-16 23:49:54,737 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-16 23:49:54,741 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-16 23:49:54,742 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-16 23:49:54,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 1096 states, 891 states have (on average 1.6038159371492704) internal successors, (1429), 898 states have internal predecessors, (1429), 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) [2021-11-16 23:49:54,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-16 23:49:54,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:49:54,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 23:49:54,776 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:49:54,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:49:54,780 INFO L85 PathProgramCache]: Analyzing trace with hash 497892406, now seen corresponding path program 1 times [2021-11-16 23:49:54,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:49:54,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157024117] [2021-11-16 23:49:54,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:49:54,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:49:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:55,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 23:49:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:55,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:49:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:49:55,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:49:55,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157024117] [2021-11-16 23:49:55,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157024117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:49:55,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:49:55,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:49:55,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106932959] [2021-11-16 23:49:55,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:49:55,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:49:55,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:49:55,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:49:55,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:49:55,453 INFO L87 Difference]: Start difference. First operand has 1096 states, 891 states have (on average 1.6038159371492704) internal successors, (1429), 898 states have internal predecessors, (1429), 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) [2021-11-16 23:49:57,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:49:58,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:49:58,985 INFO L93 Difference]: Finished difference Result 3376 states and 5931 transitions. [2021-11-16 23:49:58,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:49:58,987 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 [2021-11-16 23:49:58,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:49:59,020 INFO L225 Difference]: With dead ends: 3376 [2021-11-16 23:49:59,021 INFO L226 Difference]: Without dead ends: 2275 [2021-11-16 23:49:59,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 23:49:59,038 INFO L933 BasicCegarLoop]: 2071 mSDtfsCounter, 1903 mSDsluCounter, 3378 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 427 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2009 SdHoareTripleChecker+Valid, 5449 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-16 23:49:59,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2009 Valid, 5449 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 374 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2021-11-16 23:49:59,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2021-11-16 23:49:59,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2156. [2021-11-16 23:49:59,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 1758 states have (on average 1.6046643913538112) internal successors, (2821), 1763 states have internal predecessors, (2821), 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) [2021-11-16 23:49:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 3529 transitions. [2021-11-16 23:49:59,181 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 3529 transitions. Word has length 33 [2021-11-16 23:49:59,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:49:59,181 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 3529 transitions. [2021-11-16 23:49:59,181 INFO L471 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) [2021-11-16 23:49:59,181 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 3529 transitions. [2021-11-16 23:49:59,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-16 23:49:59,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:49:59,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 23:49:59,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-16 23:49:59,185 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:49:59,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:49:59,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1011938999, now seen corresponding path program 1 times [2021-11-16 23:49:59,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:49:59,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038751104] [2021-11-16 23:49:59,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:49:59,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:49:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:59,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-16 23:49:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:59,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:49:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:49:59,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:49:59,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038751104] [2021-11-16 23:49:59,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038751104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:49:59,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:49:59,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:49:59,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309290732] [2021-11-16 23:49:59,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:49:59,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:49:59,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:49:59,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:49:59,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:49:59,495 INFO L87 Difference]: Start difference. First operand 2156 states and 3529 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-16 23:50:01,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:50:02,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:50:02,790 INFO L93 Difference]: Finished difference Result 6658 states and 11149 transitions. [2021-11-16 23:50:02,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:50:02,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-11-16 23:50:02,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:50:02,813 INFO L225 Difference]: With dead ends: 6658 [2021-11-16 23:50:02,814 INFO L226 Difference]: Without dead ends: 4505 [2021-11-16 23:50:02,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 23:50:02,824 INFO L933 BasicCegarLoop]: 2074 mSDtfsCounter, 1908 mSDsluCounter, 3360 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 429 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 5434 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-16 23:50:02,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1991 Valid, 5434 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 374 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2021-11-16 23:50:02,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4505 states. [2021-11-16 23:50:02,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4505 to 4282. [2021-11-16 23:50:02,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4282 states, 3495 states have (on average 1.6051502145922747) internal successors, (5610), 3500 states have internal predecessors, (5610), 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) [2021-11-16 23:50:03,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4282 states to 4282 states and 7016 transitions. [2021-11-16 23:50:03,019 INFO L78 Accepts]: Start accepts. Automaton has 4282 states and 7016 transitions. Word has length 34 [2021-11-16 23:50:03,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:50:03,020 INFO L470 AbstractCegarLoop]: Abstraction has 4282 states and 7016 transitions. [2021-11-16 23:50:03,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-16 23:50:03,020 INFO L276 IsEmpty]: Start isEmpty. Operand 4282 states and 7016 transitions. [2021-11-16 23:50:03,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-16 23:50:03,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:50:03,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 23:50:03,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-16 23:50:03,024 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:50:03,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:50:03,024 INFO L85 PathProgramCache]: Analyzing trace with hash 762970933, now seen corresponding path program 1 times [2021-11-16 23:50:03,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:50:03,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871442178] [2021-11-16 23:50:03,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:50:03,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:50:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:03,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-16 23:50:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:03,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:50:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:50:03,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:50:03,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871442178] [2021-11-16 23:50:03,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871442178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:50:03,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:50:03,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:50:03,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974170702] [2021-11-16 23:50:03,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:50:03,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:50:03,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:50:03,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:50:03,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:50:03,329 INFO L87 Difference]: Start difference. First operand 4282 states and 7016 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) [2021-11-16 23:50:05,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:50:06,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:50:06,724 INFO L93 Difference]: Finished difference Result 13232 states and 22174 transitions. [2021-11-16 23:50:06,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:50:06,725 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 [2021-11-16 23:50:06,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:50:06,768 INFO L225 Difference]: With dead ends: 13232 [2021-11-16 23:50:06,768 INFO L226 Difference]: Without dead ends: 8953 [2021-11-16 23:50:06,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 23:50:06,787 INFO L933 BasicCegarLoop]: 2023 mSDtfsCounter, 1927 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 443 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 5384 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-16 23:50:06,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2058 Valid, 5384 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 372 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2021-11-16 23:50:06,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8953 states. [2021-11-16 23:50:07,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8953 to 8522. [2021-11-16 23:50:07,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8522 states, 6959 states have (on average 1.6051156775398765) internal successors, (11170), 6964 states have internal predecessors, (11170), 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) [2021-11-16 23:50:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8522 states to 8522 states and 13968 transitions. [2021-11-16 23:50:07,087 INFO L78 Accepts]: Start accepts. Automaton has 8522 states and 13968 transitions. Word has length 37 [2021-11-16 23:50:07,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:50:07,087 INFO L470 AbstractCegarLoop]: Abstraction has 8522 states and 13968 transitions. [2021-11-16 23:50:07,088 INFO L471 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) [2021-11-16 23:50:07,088 INFO L276 IsEmpty]: Start isEmpty. Operand 8522 states and 13968 transitions. [2021-11-16 23:50:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-16 23:50:07,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:50:07,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 23:50:07,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-16 23:50:07,091 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:50:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:50:07,092 INFO L85 PathProgramCache]: Analyzing trace with hash -310797271, now seen corresponding path program 1 times [2021-11-16 23:50:07,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:50:07,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023102] [2021-11-16 23:50:07,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:50:07,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:50:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:07,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-16 23:50:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:07,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:50:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:50:07,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:50:07,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023102] [2021-11-16 23:50:07,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:50:07,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:50:07,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:50:07,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876359994] [2021-11-16 23:50:07,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:50:07,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:50:07,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:50:07,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:50:07,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:50:07,323 INFO L87 Difference]: Start difference. First operand 8522 states and 13968 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) [2021-11-16 23:50:09,402 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:50:10,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:50:10,824 INFO L93 Difference]: Finished difference Result 26344 states and 44154 transitions. [2021-11-16 23:50:10,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:50:10,825 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 [2021-11-16 23:50:10,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:50:10,913 INFO L225 Difference]: With dead ends: 26344 [2021-11-16 23:50:10,914 INFO L226 Difference]: Without dead ends: 17825 [2021-11-16 23:50:10,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 23:50:10,946 INFO L933 BasicCegarLoop]: 2066 mSDtfsCounter, 1894 mSDsluCounter, 3266 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 432 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 5332 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-16 23:50:10,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1961 Valid, 5332 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 376 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2021-11-16 23:50:10,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17825 states. [2021-11-16 23:50:11,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17825 to 16978. [2021-11-16 23:50:11,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16978 states, 13867 states have (on average 1.6048171918944256) internal successors, (22254), 13872 states have internal predecessors, (22254), 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) [2021-11-16 23:50:11,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16978 states to 16978 states and 27828 transitions. [2021-11-16 23:50:11,593 INFO L78 Accepts]: Start accepts. Automaton has 16978 states and 27828 transitions. Word has length 41 [2021-11-16 23:50:11,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:50:11,593 INFO L470 AbstractCegarLoop]: Abstraction has 16978 states and 27828 transitions. [2021-11-16 23:50:11,594 INFO L471 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) [2021-11-16 23:50:11,594 INFO L276 IsEmpty]: Start isEmpty. Operand 16978 states and 27828 transitions. [2021-11-16 23:50:11,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-16 23:50:11,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:50:11,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 23:50:11,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-16 23:50:11,598 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:50:11,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:50:11,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1087085416, now seen corresponding path program 1 times [2021-11-16 23:50:11,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:50:11,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996022563] [2021-11-16 23:50:11,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:50:11,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:50:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:11,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 23:50:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:11,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:50:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:11,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 23:50:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:50:11,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:50:11,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996022563] [2021-11-16 23:50:11,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996022563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:50:11,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:50:11,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:50:11,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369792682] [2021-11-16 23:50:11,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:50:11,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:50:11,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:50:11,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:50:11,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:50:11,805 INFO L87 Difference]: Start difference. First operand 16978 states and 27828 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) [2021-11-16 23:50:13,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:50:15,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:50:15,639 INFO L93 Difference]: Finished difference Result 52432 states and 87862 transitions. [2021-11-16 23:50:15,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:50:15,639 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 [2021-11-16 23:50:15,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:50:15,921 INFO L225 Difference]: With dead ends: 52432 [2021-11-16 23:50:15,922 INFO L226 Difference]: Without dead ends: 35457 [2021-11-16 23:50:15,965 INFO L932 BasicCegarLoop]: 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 [2021-11-16 23:50:15,966 INFO L933 BasicCegarLoop]: 1991 mSDtfsCounter, 1917 mSDsluCounter, 3219 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 443 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 5210 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-16 23:50:15,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2038 Valid, 5210 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 375 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2021-11-16 23:50:15,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35457 states. [2021-11-16 23:50:16,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35457 to 33778. [2021-11-16 23:50:16,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33778 states, 27595 states have (on average 1.6042761369813372) internal successors, (44270), 27600 states have internal predecessors, (44270), 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) [2021-11-16 23:50:17,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33778 states to 33778 states and 55348 transitions. [2021-11-16 23:50:17,050 INFO L78 Accepts]: Start accepts. Automaton has 33778 states and 55348 transitions. Word has length 46 [2021-11-16 23:50:17,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:50:17,051 INFO L470 AbstractCegarLoop]: Abstraction has 33778 states and 55348 transitions. [2021-11-16 23:50:17,051 INFO L471 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) [2021-11-16 23:50:17,052 INFO L276 IsEmpty]: Start isEmpty. Operand 33778 states and 55348 transitions. [2021-11-16 23:50:17,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-16 23:50:17,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:50:17,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 23:50:17,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-16 23:50:17,054 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:50:17,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:50:17,054 INFO L85 PathProgramCache]: Analyzing trace with hash 82953336, now seen corresponding path program 1 times [2021-11-16 23:50:17,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:50:17,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859791200] [2021-11-16 23:50:17,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:50:17,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:50:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:17,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 23:50:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:17,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:50:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:17,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-16 23:50:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:17,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:50:17,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:50:17,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859791200] [2021-11-16 23:50:17,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859791200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:50:17,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:50:17,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:50:17,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040883815] [2021-11-16 23:50:17,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:50:17,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:50:17,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:50:17,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:50:17,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:50:17,378 INFO L87 Difference]: Start difference. First operand 33778 states and 55348 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) [2021-11-16 23:50:19,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:50:21,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:50:21,596 INFO L93 Difference]: Finished difference Result 104336 states and 174774 transitions. [2021-11-16 23:50:21,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:50:21,604 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 [2021-11-16 23:50:21,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:50:21,975 INFO L225 Difference]: With dead ends: 104336 [2021-11-16 23:50:21,976 INFO L226 Difference]: Without dead ends: 70561 [2021-11-16 23:50:22,086 INFO L932 BasicCegarLoop]: 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 [2021-11-16 23:50:22,087 INFO L933 BasicCegarLoop]: 2114 mSDtfsCounter, 1911 mSDsluCounter, 3445 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 432 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2017 SdHoareTripleChecker+Valid, 5559 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-16 23:50:22,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2017 Valid, 5559 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 377 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2021-11-16 23:50:22,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70561 states. [2021-11-16 23:50:23,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70561 to 67218. [2021-11-16 23:50:24,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67218 states, 54923 states have (on average 1.6036633104528157) internal successors, (88078), 54928 states have internal predecessors, (88078), 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) [2021-11-16 23:50:24,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67218 states to 67218 states and 110100 transitions. [2021-11-16 23:50:24,497 INFO L78 Accepts]: Start accepts. Automaton has 67218 states and 110100 transitions. Word has length 41 [2021-11-16 23:50:24,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:50:24,498 INFO L470 AbstractCegarLoop]: Abstraction has 67218 states and 110100 transitions. [2021-11-16 23:50:24,498 INFO L471 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) [2021-11-16 23:50:24,498 INFO L276 IsEmpty]: Start isEmpty. Operand 67218 states and 110100 transitions. [2021-11-16 23:50:24,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-16 23:50:24,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:50:24,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 23:50:24,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-16 23:50:24,503 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:50:24,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:50:24,504 INFO L85 PathProgramCache]: Analyzing trace with hash -737447042, now seen corresponding path program 1 times [2021-11-16 23:50:24,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:50:24,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973092328] [2021-11-16 23:50:24,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:50:24,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:50:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:24,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-16 23:50:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:24,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:50:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:24,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-16 23:50:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:24,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:50:24,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:50:24,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973092328] [2021-11-16 23:50:24,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973092328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:50:24,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:50:24,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:50:24,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476166230] [2021-11-16 23:50:24,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:50:24,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:50:24,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:50:24,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:50:24,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:50:24,746 INFO L87 Difference]: Start difference. First operand 67218 states and 110100 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) [2021-11-16 23:50:26,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:50:29,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:50:29,952 INFO L93 Difference]: Finished difference Result 207664 states and 347702 transitions. [2021-11-16 23:50:29,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:50:29,954 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 [2021-11-16 23:50:29,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:50:30,700 INFO L225 Difference]: With dead ends: 207664 [2021-11-16 23:50:30,700 INFO L226 Difference]: Without dead ends: 140449 [2021-11-16 23:50:31,127 INFO L932 BasicCegarLoop]: 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 [2021-11-16 23:50:31,128 INFO L933 BasicCegarLoop]: 2117 mSDtfsCounter, 1900 mSDsluCounter, 3369 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 425 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1962 SdHoareTripleChecker+Valid, 5486 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-16 23:50:31,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1962 Valid, 5486 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 379 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2021-11-16 23:50:31,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140449 states. [2021-11-16 23:50:35,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140449 to 133778. [2021-11-16 23:50:35,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133778 states, 109323 states have (on average 1.6030112602105686) internal successors, (175246), 109328 states have internal predecessors, (175246), 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) [2021-11-16 23:50:35,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133778 states to 133778 states and 219028 transitions. [2021-11-16 23:50:36,034 INFO L78 Accepts]: Start accepts. Automaton has 133778 states and 219028 transitions. Word has length 47 [2021-11-16 23:50:36,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:50:36,034 INFO L470 AbstractCegarLoop]: Abstraction has 133778 states and 219028 transitions. [2021-11-16 23:50:36,035 INFO L471 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) [2021-11-16 23:50:36,035 INFO L276 IsEmpty]: Start isEmpty. Operand 133778 states and 219028 transitions. [2021-11-16 23:50:36,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-16 23:50:36,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:50:36,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 23:50:36,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-16 23:50:36,037 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:50:36,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:50:36,037 INFO L85 PathProgramCache]: Analyzing trace with hash 198593437, now seen corresponding path program 1 times [2021-11-16 23:50:36,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:50:36,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775605047] [2021-11-16 23:50:36,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:50:36,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:50:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:36,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-16 23:50:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:36,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:50:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:36,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-16 23:50:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:50:36,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:50:36,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775605047] [2021-11-16 23:50:36,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775605047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:50:36,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:50:36,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:50:36,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056088809] [2021-11-16 23:50:36,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:50:36,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:50:36,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:50:36,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:50:36,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:50:36,250 INFO L87 Difference]: Start difference. First operand 133778 states and 219028 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-16 23:50:38,331 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:50:44,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:50:44,018 INFO L93 Difference]: Finished difference Result 413360 states and 691766 transitions. [2021-11-16 23:50:44,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:50:44,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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 51 [2021-11-16 23:50:44,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:50:45,399 INFO L225 Difference]: With dead ends: 413360 [2021-11-16 23:50:45,399 INFO L226 Difference]: Without dead ends: 279585 [2021-11-16 23:50:45,752 INFO L932 BasicCegarLoop]: 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 [2021-11-16 23:50:45,753 INFO L933 BasicCegarLoop]: 2113 mSDtfsCounter, 1902 mSDsluCounter, 3397 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 432 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 5510 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-16 23:50:45,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2010 Valid, 5510 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 377 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2021-11-16 23:50:45,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279585 states. [2021-11-16 23:50:53,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279585 to 266258. [2021-11-16 23:50:53,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266258 states, 217611 states have (on average 1.6023362789564866) internal successors, (348686), 217616 states have internal predecessors, (348686), 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) [2021-11-16 23:50:54,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266258 states to 266258 states and 435732 transitions. [2021-11-16 23:50:54,995 INFO L78 Accepts]: Start accepts. Automaton has 266258 states and 435732 transitions. Word has length 51 [2021-11-16 23:50:54,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:50:54,996 INFO L470 AbstractCegarLoop]: Abstraction has 266258 states and 435732 transitions. [2021-11-16 23:50:54,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-16 23:50:54,996 INFO L276 IsEmpty]: Start isEmpty. Operand 266258 states and 435732 transitions. [2021-11-16 23:50:54,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-16 23:50:54,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:50:54,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 23:50:54,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-16 23:50:54,998 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:50:54,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:50:54,998 INFO L85 PathProgramCache]: Analyzing trace with hash -843141897, now seen corresponding path program 1 times [2021-11-16 23:50:54,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:50:54,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271180131] [2021-11-16 23:50:54,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:50:54,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:50:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:55,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 23:50:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:55,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:50:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:55,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-16 23:50:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:55,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:50:55,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:50:55,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271180131] [2021-11-16 23:50:55,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271180131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:50:55,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:50:55,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:50:55,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975257195] [2021-11-16 23:50:55,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:50:55,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:50:55,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:50:55,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:50:55,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:50:55,194 INFO L87 Difference]: Start difference. First operand 266258 states and 435732 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) [2021-11-16 23:50:57,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []