./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 23:48:25,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 23:48:25,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 23:48:25,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 23:48:25,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 23:48:25,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 23:48:25,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 23:48:25,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 23:48:25,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 23:48:25,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 23:48:25,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 23:48:25,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 23:48:25,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 23:48:25,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 23:48:25,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 23:48:25,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 23:48:25,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 23:48:25,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 23:48:25,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 23:48:25,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 23:48:25,960 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 23:48:25,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 23:48:25,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 23:48:25,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 23:48:25,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 23:48:25,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 23:48:25,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 23:48:25,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 23:48:25,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 23:48:25,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 23:48:25,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 23:48:25,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 23:48:25,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 23:48:25,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 23:48:25,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 23:48:25,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 23:48:25,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 23:48:25,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 23:48:25,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 23:48:25,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 23:48:25,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 23:48:25,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 23:48:25,977 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 23:48:26,012 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 23:48:26,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 23:48:26,013 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 23:48:26,013 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 23:48:26,014 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 23:48:26,015 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 23:48:26,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 23:48:26,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 23:48:26,015 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 23:48:26,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 23:48:26,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 23:48:26,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 23:48:26,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 23:48:26,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 23:48:26,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 23:48:26,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 23:48:26,017 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 23:48:26,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 23:48:26,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 23:48:26,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 23:48:26,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 23:48:26,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 23:48:26,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 23:48:26,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 23:48:26,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 23:48:26,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 23:48:26,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 23:48:26,020 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 23:48:26,020 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 23:48:26,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 23:48:26,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 [2022-07-13 23:48:26,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 23:48:26,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 23:48:26,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 23:48:26,235 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 23:48:26,238 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 23:48:26,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2022-07-13 23:48:26,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90d5e4ec2/8f69c90b74eb4387aeca38a95917c6e8/FLAG68a495086 [2022-07-13 23:48:26,902 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 23:48:26,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2022-07-13 23:48:26,939 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90d5e4ec2/8f69c90b74eb4387aeca38a95917c6e8/FLAG68a495086 [2022-07-13 23:48:27,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90d5e4ec2/8f69c90b74eb4387aeca38a95917c6e8 [2022-07-13 23:48:27,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 23:48:27,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 23:48:27,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 23:48:27,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 23:48:27,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 23:48:27,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:48:27" (1/1) ... [2022-07-13 23:48:27,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629a7c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:27, skipping insertion in model container [2022-07-13 23:48:27,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:48:27" (1/1) ... [2022-07-13 23:48:27,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 23:48:27,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 23:48:28,528 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i[231089,231102] [2022-07-13 23:48:28,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 23:48:28,661 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 23:48:28,927 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i[231089,231102] [2022-07-13 23:48:28,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 23:48:29,106 INFO L208 MainTranslator]: Completed translation [2022-07-13 23:48:29,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:29 WrapperNode [2022-07-13 23:48:29,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 23:48:29,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 23:48:29,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 23:48:29,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 23:48:29,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:29" (1/1) ... [2022-07-13 23:48:29,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:29" (1/1) ... [2022-07-13 23:48:29,474 INFO L137 Inliner]: procedures = 206, calls = 2928, calls flagged for inlining = 89, calls inlined = 81, statements flattened = 7953 [2022-07-13 23:48:29,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 23:48:29,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 23:48:29,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 23:48:29,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 23:48:29,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:29" (1/1) ... [2022-07-13 23:48:29,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:29" (1/1) ... [2022-07-13 23:48:29,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:29" (1/1) ... [2022-07-13 23:48:29,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:29" (1/1) ... [2022-07-13 23:48:29,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:29" (1/1) ... [2022-07-13 23:48:29,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:29" (1/1) ... [2022-07-13 23:48:29,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:29" (1/1) ... [2022-07-13 23:48:29,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 23:48:29,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 23:48:29,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 23:48:29,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 23:48:29,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:29" (1/1) ... [2022-07-13 23:48:29,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 23:48:29,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:48:29,910 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 23:48:29,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 23:48:29,974 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_read_value [2022-07-13 23:48:29,974 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_read_value [2022-07-13 23:48:29,974 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2022-07-13 23:48:29,974 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2022-07-13 23:48:29,975 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_detect [2022-07-13 23:48:29,975 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_detect [2022-07-13 23:48:29,975 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2022-07-13 23:48:29,975 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2022-07-13 23:48:29,975 INFO L130 BoogieDeclarations]: Found specification of procedure store_beep [2022-07-13 23:48:29,975 INFO L138 BoogieDeclarations]: Found implementation of procedure store_beep [2022-07-13 23:48:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-13 23:48:29,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-13 23:48:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2022-07-13 23:48:29,976 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2022-07-13 23:48:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2022-07-13 23:48:29,976 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2022-07-13 23:48:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2022-07-13 23:48:29,977 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2022-07-13 23:48:29,977 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_FROM_REG [2022-07-13 23:48:29,977 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_FROM_REG [2022-07-13 23:48:29,977 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-13 23:48:29,977 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-13 23:48:29,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-13 23:48:29,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-13 23:48:29,978 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-07-13 23:48:29,978 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-07-13 23:48:29,978 INFO L130 BoogieDeclarations]: Found specification of procedure show_sensor [2022-07-13 23:48:29,978 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sensor [2022-07-13 23:48:29,978 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-13 23:48:29,978 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-13 23:48:29,978 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2022-07-13 23:48:29,979 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2022-07-13 23:48:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 23:48:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max_hyst [2022-07-13 23:48:29,979 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max_hyst [2022-07-13 23:48:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2022-07-13 23:48:29,980 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2022-07-13 23:48:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-07-13 23:48:29,980 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-07-13 23:48:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-07-13 23:48:29,980 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-07-13 23:48:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_isa_unregister [2022-07-13 23:48:29,980 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_isa_unregister [2022-07-13 23:48:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2022-07-13 23:48:29,981 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2022-07-13 23:48:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 23:48:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure show_beep [2022-07-13 23:48:29,981 INFO L138 BoogieDeclarations]: Found implementation of procedure show_beep [2022-07-13 23:48:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-07-13 23:48:29,981 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-07-13 23:48:29,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 23:48:29,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 23:48:29,982 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-07-13 23:48:29,982 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-07-13 23:48:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-13 23:48:29,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-13 23:48:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2022-07-13 23:48:29,984 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2022-07-13 23:48:29,984 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2022-07-13 23:48:29,985 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2022-07-13 23:48:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-13 23:48:29,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-13 23:48:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure store_sensor [2022-07-13 23:48:29,985 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sensor [2022-07-13 23:48:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_update_device [2022-07-13 23:48:29,985 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_update_device [2022-07-13 23:48:29,986 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_remove_files [2022-07-13 23:48:29,986 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_remove_files [2022-07-13 23:48:29,986 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2022-07-13 23:48:29,986 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2022-07-13 23:48:29,986 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-13 23:48:29,987 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-13 23:48:29,987 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2022-07-13 23:48:29,987 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2022-07-13 23:48:29,987 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2022-07-13 23:48:29,987 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2022-07-13 23:48:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-07-13 23:48:29,988 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-07-13 23:48:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_w83781d_data [2022-07-13 23:48:29,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_w83781d_data [2022-07-13 23:48:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 23:48:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-07-13 23:48:29,988 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-07-13 23:48:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-07-13 23:48:29,989 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-07-13 23:48:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2022-07-13 23:48:29,989 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2022-07-13 23:48:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2022-07-13 23:48:29,989 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2022-07-13 23:48:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2022-07-13 23:48:29,990 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2022-07-13 23:48:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 23:48:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2022-07-13 23:48:29,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2022-07-13 23:48:29,991 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2022-07-13 23:48:29,992 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2022-07-13 23:48:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-13 23:48:29,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-13 23:48:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_w83781d_data [2022-07-13 23:48:29,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_w83781d_data [2022-07-13 23:48:29,993 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max [2022-07-13 23:48:29,993 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max [2022-07-13 23:48:29,993 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_write_value [2022-07-13 23:48:29,993 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_write_value [2022-07-13 23:48:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 23:48:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2022-07-13 23:48:29,994 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2022-07-13 23:48:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 23:48:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2022-07-13 23:48:29,994 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2022-07-13 23:48:29,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 23:48:29,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2022-07-13 23:48:29,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2022-07-13 23:48:29,995 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2022-07-13 23:48:29,995 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2022-07-13 23:48:29,995 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max_hyst [2022-07-13 23:48:29,996 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max_hyst [2022-07-13 23:48:29,996 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2022-07-13 23:48:29,997 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2022-07-13 23:48:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 23:48:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-07-13 23:48:29,999 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-07-13 23:48:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 23:48:30,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 23:48:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-13 23:48:30,001 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-13 23:48:30,745 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 23:48:30,761 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 23:48:36,595 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 23:48:36,606 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 23:48:36,607 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 23:48:36,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:48:36 BoogieIcfgContainer [2022-07-13 23:48:36,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 23:48:36,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 23:48:36,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 23:48:36,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 23:48:36,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:48:27" (1/3) ... [2022-07-13 23:48:36,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c39c936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:48:36, skipping insertion in model container [2022-07-13 23:48:36,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:48:29" (2/3) ... [2022-07-13 23:48:36,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c39c936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:48:36, skipping insertion in model container [2022-07-13 23:48:36,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:48:36" (3/3) ... [2022-07-13 23:48:36,615 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2022-07-13 23:48:36,625 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 23:48:36,626 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 23:48:36,692 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 23:48:36,697 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@701d9fd1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4dbe4c98 [2022-07-13 23:48:36,698 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 23:48:36,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 1970 states, 1484 states have (on average 1.5269541778975741) internal successors, (2266), 1495 states have internal predecessors, (2266), 427 states have call successors, (427), 57 states have call predecessors, (427), 57 states have return successors, (427), 427 states have call predecessors, (427), 427 states have call successors, (427) [2022-07-13 23:48:36,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-13 23:48:36,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:36,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:48:36,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:36,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:36,721 INFO L85 PathProgramCache]: Analyzing trace with hash 100309635, now seen corresponding path program 1 times [2022-07-13 23:48:36,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:36,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129790419] [2022-07-13 23:48:36,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:36,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:37,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:48:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:37,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:48:37,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:37,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129790419] [2022-07-13 23:48:37,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129790419] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:37,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:37,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:48:37,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944213778] [2022-07-13 23:48:37,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:37,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:48:37,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:37,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:48:37,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:48:37,431 INFO L87 Difference]: Start difference. First operand has 1970 states, 1484 states have (on average 1.5269541778975741) internal successors, (2266), 1495 states have internal predecessors, (2266), 427 states have call successors, (427), 57 states have call predecessors, (427), 57 states have return successors, (427), 427 states have call predecessors, (427), 427 states have call successors, (427) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:48:39,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:48:42,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:42,019 INFO L93 Difference]: Finished difference Result 5910 states and 9983 transitions. [2022-07-13 23:48:42,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:48:42,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-07-13 23:48:42,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:42,045 INFO L225 Difference]: With dead ends: 5910 [2022-07-13 23:48:42,045 INFO L226 Difference]: Without dead ends: 3935 [2022-07-13 23:48:42,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:48:42,084 INFO L413 NwaCegarLoop]: 3791 mSDtfsCounter, 3075 mSDsluCounter, 5212 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 938 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3322 SdHoareTripleChecker+Valid, 9003 SdHoareTripleChecker+Invalid, 2035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:42,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3322 Valid, 9003 Invalid, 2035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [938 Valid, 1096 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-07-13 23:48:42,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2022-07-13 23:48:42,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 3899. [2022-07-13 23:48:42,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3899 states, 2942 states have (on average 1.5159755268524813) internal successors, (4460), 2953 states have internal predecessors, (4460), 844 states have call successors, (844), 113 states have call predecessors, (844), 112 states have return successors, (835), 834 states have call predecessors, (835), 835 states have call successors, (835) [2022-07-13 23:48:42,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3899 states to 3899 states and 6139 transitions. [2022-07-13 23:48:42,255 INFO L78 Accepts]: Start accepts. Automaton has 3899 states and 6139 transitions. Word has length 28 [2022-07-13 23:48:42,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:42,256 INFO L495 AbstractCegarLoop]: Abstraction has 3899 states and 6139 transitions. [2022-07-13 23:48:42,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:48:42,256 INFO L276 IsEmpty]: Start isEmpty. Operand 3899 states and 6139 transitions. [2022-07-13 23:48:42,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-13 23:48:42,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:42,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:48:42,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 23:48:42,259 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:42,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:42,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1655363240, now seen corresponding path program 1 times [2022-07-13 23:48:42,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:42,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436345608] [2022-07-13 23:48:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:42,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:42,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 23:48:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:42,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:48:42,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:42,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436345608] [2022-07-13 23:48:42,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436345608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:42,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:42,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:48:42,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53576046] [2022-07-13 23:48:42,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:42,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:48:42,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:42,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:48:42,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:48:42,650 INFO L87 Difference]: Start difference. First operand 3899 states and 6139 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:48:46,286 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:48:48,351 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:48:49,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:49,121 INFO L93 Difference]: Finished difference Result 11703 states and 18485 transitions. [2022-07-13 23:48:49,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:48:49,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-07-13 23:48:49,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:49,201 INFO L225 Difference]: With dead ends: 11703 [2022-07-13 23:48:49,202 INFO L226 Difference]: Without dead ends: 7807 [2022-07-13 23:48:49,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:48:49,223 INFO L413 NwaCegarLoop]: 3962 mSDtfsCounter, 3057 mSDsluCounter, 5294 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 889 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3318 SdHoareTripleChecker+Valid, 9256 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 889 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:49,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3318 Valid, 9256 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [889 Valid, 1110 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-07-13 23:48:49,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7807 states. [2022-07-13 23:48:49,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7807 to 7755. [2022-07-13 23:48:49,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7755 states, 5855 states have (on average 1.515798462852263) internal successors, (8875), 5870 states have internal predecessors, (8875), 1675 states have call successors, (1675), 225 states have call predecessors, (1675), 224 states have return successors, (1666), 1663 states have call predecessors, (1666), 1666 states have call successors, (1666) [2022-07-13 23:48:49,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7755 states to 7755 states and 12216 transitions. [2022-07-13 23:48:49,441 INFO L78 Accepts]: Start accepts. Automaton has 7755 states and 12216 transitions. Word has length 32 [2022-07-13 23:48:49,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:49,442 INFO L495 AbstractCegarLoop]: Abstraction has 7755 states and 12216 transitions. [2022-07-13 23:48:49,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:48:49,443 INFO L276 IsEmpty]: Start isEmpty. Operand 7755 states and 12216 transitions. [2022-07-13 23:48:49,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-13 23:48:49,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:49,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:48:49,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 23:48:49,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:49,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:49,448 INFO L85 PathProgramCache]: Analyzing trace with hash 441483741, now seen corresponding path program 1 times [2022-07-13 23:48:49,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:49,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118498665] [2022-07-13 23:48:49,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:49,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:49,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 23:48:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:49,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:49,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:48:49,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:49,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118498665] [2022-07-13 23:48:49,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118498665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:49,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:49,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:48:49,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172528157] [2022-07-13 23:48:49,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:49,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:48:49,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:49,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:48:49,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:48:49,782 INFO L87 Difference]: Start difference. First operand 7755 states and 12216 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:48:52,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:52,358 INFO L93 Difference]: Finished difference Result 23299 states and 36818 transitions. [2022-07-13 23:48:52,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:48:52,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-07-13 23:48:52,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:52,443 INFO L225 Difference]: With dead ends: 23299 [2022-07-13 23:48:52,443 INFO L226 Difference]: Without dead ends: 15547 [2022-07-13 23:48:52,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:48:52,488 INFO L413 NwaCegarLoop]: 3947 mSDtfsCounter, 3109 mSDsluCounter, 5351 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 901 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3369 SdHoareTripleChecker+Valid, 9298 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 901 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:52,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3369 Valid, 9298 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [901 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 23:48:52,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15547 states. [2022-07-13 23:48:52,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15547 to 15463. [2022-07-13 23:48:52,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15463 states, 11677 states have (on average 1.515543375867089) internal successors, (17697), 11700 states have internal predecessors, (17697), 3337 states have call successors, (3337), 449 states have call predecessors, (3337), 448 states have return successors, (3328), 3321 states have call predecessors, (3328), 3328 states have call successors, (3328) [2022-07-13 23:48:53,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15463 states to 15463 states and 24362 transitions. [2022-07-13 23:48:53,266 INFO L78 Accepts]: Start accepts. Automaton has 15463 states and 24362 transitions. Word has length 29 [2022-07-13 23:48:53,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:53,267 INFO L495 AbstractCegarLoop]: Abstraction has 15463 states and 24362 transitions. [2022-07-13 23:48:53,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:48:53,268 INFO L276 IsEmpty]: Start isEmpty. Operand 15463 states and 24362 transitions. [2022-07-13 23:48:53,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-13 23:48:53,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:53,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:48:53,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 23:48:53,270 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:53,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:53,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1843634687, now seen corresponding path program 1 times [2022-07-13 23:48:53,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:53,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791861398] [2022-07-13 23:48:53,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:53,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:53,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 23:48:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:53,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:48:53,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:53,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791861398] [2022-07-13 23:48:53,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791861398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:53,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:53,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:48:53,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646281917] [2022-07-13 23:48:53,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:53,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:48:53,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:53,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:48:53,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:48:53,837 INFO L87 Difference]: Start difference. First operand 15463 states and 24362 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:48:56,544 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:48:59,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:49:00,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:49:00,684 INFO L93 Difference]: Finished difference Result 46463 states and 73432 transitions. [2022-07-13 23:49:00,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:49:00,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-07-13 23:49:00,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:49:00,835 INFO L225 Difference]: With dead ends: 46463 [2022-07-13 23:49:00,835 INFO L226 Difference]: Without dead ends: 31003 [2022-07-13 23:49:00,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:49:00,898 INFO L413 NwaCegarLoop]: 3957 mSDtfsCounter, 3104 mSDsluCounter, 5344 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 899 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3352 SdHoareTripleChecker+Valid, 9301 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 899 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-13 23:49:00,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3352 Valid, 9301 Invalid, 2009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [899 Valid, 1108 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2022-07-13 23:49:00,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31003 states. [2022-07-13 23:49:01,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31003 to 30855. [2022-07-13 23:49:01,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30855 states, 23301 states have (on average 1.5151710227028883) internal successors, (35305), 23340 states have internal predecessors, (35305), 6657 states have call successors, (6657), 897 states have call predecessors, (6657), 896 states have return successors, (6648), 6633 states have call predecessors, (6648), 6648 states have call successors, (6648) [2022-07-13 23:49:01,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30855 states to 30855 states and 48610 transitions. [2022-07-13 23:49:01,926 INFO L78 Accepts]: Start accepts. Automaton has 30855 states and 48610 transitions. Word has length 32 [2022-07-13 23:49:01,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:49:01,926 INFO L495 AbstractCegarLoop]: Abstraction has 30855 states and 48610 transitions. [2022-07-13 23:49:01,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:49:01,926 INFO L276 IsEmpty]: Start isEmpty. Operand 30855 states and 48610 transitions. [2022-07-13 23:49:01,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-13 23:49:01,929 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:49:01,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:49:01,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 23:49:01,929 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:49:01,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:49:01,929 INFO L85 PathProgramCache]: Analyzing trace with hash 153779286, now seen corresponding path program 1 times [2022-07-13 23:49:01,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:49:01,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118799438] [2022-07-13 23:49:01,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:49:01,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:49:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:02,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 23:49:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:02,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:49:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:02,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:49:02,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:49:02,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118799438] [2022-07-13 23:49:02,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118799438] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:49:02,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:49:02,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:49:02,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437421923] [2022-07-13 23:49:02,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:49:02,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:49:02,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:49:02,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:49:02,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:49:02,315 INFO L87 Difference]: Start difference. First operand 30855 states and 48610 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:49:04,541 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:49:06,920 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:49:08,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:49:11,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:49:11,635 INFO L93 Difference]: Finished difference Result 92655 states and 146416 transitions. [2022-07-13 23:49:11,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:49:11,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-07-13 23:49:11,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:49:11,952 INFO L225 Difference]: With dead ends: 92655 [2022-07-13 23:49:11,952 INFO L226 Difference]: Without dead ends: 61803 [2022-07-13 23:49:12,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:49:12,070 INFO L413 NwaCegarLoop]: 3950 mSDtfsCounter, 3098 mSDsluCounter, 5334 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 898 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3358 SdHoareTripleChecker+Valid, 9284 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-07-13 23:49:12,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3358 Valid, 9284 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [898 Valid, 1109 Invalid, 3 Unknown, 0 Unchecked, 8.1s Time] [2022-07-13 23:49:12,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61803 states. [2022-07-13 23:49:13,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61803 to 61527. [2022-07-13 23:49:13,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61527 states, 46461 states have (on average 1.514582122640494) internal successors, (70369), 46532 states have internal predecessors, (70369), 13273 states have call successors, (13273), 1793 states have call predecessors, (13273), 1792 states have return successors, (13264), 13233 states have call predecessors, (13264), 13264 states have call successors, (13264) [2022-07-13 23:49:14,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61527 states to 61527 states and 96906 transitions. [2022-07-13 23:49:14,273 INFO L78 Accepts]: Start accepts. Automaton has 61527 states and 96906 transitions. Word has length 34 [2022-07-13 23:49:14,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:49:14,273 INFO L495 AbstractCegarLoop]: Abstraction has 61527 states and 96906 transitions. [2022-07-13 23:49:14,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:49:14,274 INFO L276 IsEmpty]: Start isEmpty. Operand 61527 states and 96906 transitions. [2022-07-13 23:49:14,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-13 23:49:14,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:49:14,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:49:14,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 23:49:14,275 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:49:14,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:49:14,275 INFO L85 PathProgramCache]: Analyzing trace with hash -17277589, now seen corresponding path program 1 times [2022-07-13 23:49:14,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:49:14,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512114504] [2022-07-13 23:49:14,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:49:14,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:49:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:14,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 23:49:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:14,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:49:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:49:14,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:49:14,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512114504] [2022-07-13 23:49:14,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512114504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:49:14,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:49:14,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:49:14,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835504745] [2022-07-13 23:49:14,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:49:14,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:49:14,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:49:14,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:49:14,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:49:14,666 INFO L87 Difference]: Start difference. First operand 61527 states and 96906 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:49:17,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:49:19,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:49:22,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:49:22,799 INFO L93 Difference]: Finished difference Result 184767 states and 291896 transitions. [2022-07-13 23:49:22,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:49:22,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2022-07-13 23:49:22,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:49:23,561 INFO L225 Difference]: With dead ends: 184767 [2022-07-13 23:49:23,561 INFO L226 Difference]: Without dead ends: 123243 [2022-07-13 23:49:23,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:49:23,830 INFO L413 NwaCegarLoop]: 3839 mSDtfsCounter, 3021 mSDsluCounter, 5155 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 903 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3280 SdHoareTripleChecker+Valid, 8994 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:49:23,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3280 Valid, 8994 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 1103 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2022-07-13 23:49:23,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123243 states. [2022-07-13 23:49:26,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123243 to 122711. [2022-07-13 23:49:27,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122711 states, 92653 states have (on average 1.5139606920445101) internal successors, (140273), 92788 states have internal predecessors, (140273), 26473 states have call successors, (26473), 3585 states have call predecessors, (26473), 3584 states have return successors, (26464), 26401 states have call predecessors, (26464), 26464 states have call successors, (26464) [2022-07-13 23:49:28,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122711 states to 122711 states and 193210 transitions. [2022-07-13 23:49:28,052 INFO L78 Accepts]: Start accepts. Automaton has 122711 states and 193210 transitions. Word has length 31 [2022-07-13 23:49:28,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:49:28,053 INFO L495 AbstractCegarLoop]: Abstraction has 122711 states and 193210 transitions. [2022-07-13 23:49:28,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:49:28,053 INFO L276 IsEmpty]: Start isEmpty. Operand 122711 states and 193210 transitions. [2022-07-13 23:49:28,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-13 23:49:28,054 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:49:28,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:49:28,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 23:49:28,054 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:49:28,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:49:28,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1511922726, now seen corresponding path program 1 times [2022-07-13 23:49:28,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:49:28,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665350235] [2022-07-13 23:49:28,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:49:28,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:49:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:28,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 23:49:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:28,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:49:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:28,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:49:28,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:49:28,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665350235] [2022-07-13 23:49:28,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665350235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:49:28,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:49:28,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:49:28,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585122362] [2022-07-13 23:49:28,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:49:28,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:49:28,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:49:28,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:49:28,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:49:28,528 INFO L87 Difference]: Start difference. First operand 122711 states and 193210 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:49:35,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:49:35,272 INFO L93 Difference]: Finished difference Result 368767 states and 582440 transitions. [2022-07-13 23:49:35,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:49:35,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-07-13 23:49:35,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:49:36,939 INFO L225 Difference]: With dead ends: 368767 [2022-07-13 23:49:36,939 INFO L226 Difference]: Without dead ends: 246059 [2022-07-13 23:49:37,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:49:37,462 INFO L413 NwaCegarLoop]: 4300 mSDtfsCounter, 3058 mSDsluCounter, 5555 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 823 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3307 SdHoareTripleChecker+Valid, 9855 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 823 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 23:49:37,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3307 Valid, 9855 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [823 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 23:49:37,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246059 states. [2022-07-13 23:49:43,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246059 to 245015. [2022-07-13 23:49:44,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245015 states, 184973 states have (on average 1.5134803457801949) internal successors, (279953), 185236 states have internal predecessors, (279953), 52873 states have call successors, (52873), 7169 states have call predecessors, (52873), 7168 states have return successors, (52864), 52737 states have call predecessors, (52864), 52864 states have call successors, (52864) [2022-07-13 23:49:46,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245015 states to 245015 states and 385690 transitions. [2022-07-13 23:49:46,157 INFO L78 Accepts]: Start accepts. Automaton has 245015 states and 385690 transitions. Word has length 34 [2022-07-13 23:49:46,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:49:46,159 INFO L495 AbstractCegarLoop]: Abstraction has 245015 states and 385690 transitions. [2022-07-13 23:49:46,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:49:46,159 INFO L276 IsEmpty]: Start isEmpty. Operand 245015 states and 385690 transitions. [2022-07-13 23:49:46,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 23:49:46,169 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:49:46,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:49:46,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 23:49:46,169 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:49:46,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:49:46,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1384382779, now seen corresponding path program 1 times [2022-07-13 23:49:46,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:49:46,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234059107] [2022-07-13 23:49:46,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:49:46,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:49:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:46,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 23:49:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:46,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:49:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:49:46,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:49:46,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234059107] [2022-07-13 23:49:46,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234059107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:49:46,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:49:46,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:49:46,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189263523] [2022-07-13 23:49:46,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:49:46,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:49:46,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:49:46,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:49:46,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:49:46,415 INFO L87 Difference]: Start difference. First operand 245015 states and 385690 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:49:49,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:49:51,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []