./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 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--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-?-6c24879 [2022-07-12 12:08:07,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:08:07,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:08:07,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:08:07,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:08:07,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:08:07,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:08:07,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:08:07,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:08:07,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:08:07,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:08:07,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:08:07,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:08:07,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:08:07,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:08:07,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:08:07,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:08:07,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:08:07,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:08:07,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:08:07,630 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:08:07,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:08:07,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:08:07,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:08:07,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:08:07,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:08:07,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:08:07,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:08:07,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:08:07,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:08:07,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:08:07,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:08:07,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:08:07,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:08:07,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:08:07,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:08:07,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:08:07,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:08:07,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:08:07,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:08:07,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:08:07,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:08:07,661 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 12:08:07,681 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:08:07,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:08:07,685 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:08:07,685 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:08:07,686 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:08:07,686 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:08:07,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:08:07,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:08:07,687 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:08:07,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:08:07,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 12:08:07,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:08:07,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:08:07,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:08:07,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:08:07,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:08:07,688 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:08:07,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:08:07,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:08:07,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:08:07,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:08:07,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:08:07,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:08:07,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:08:07,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:08:07,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 12:08:07,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 12:08:07,691 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:08:07,691 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:08:07,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:08:07,692 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 [2022-07-12 12:08:07,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:08:07,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:08:07,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:08:07,885 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:08:07,885 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:08:07,886 INFO L432 ainManager$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 [2022-07-12 12:08:07,930 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c52fe082c/426f03f2cab24df3affefeedcfb67c6b/FLAG0cde3657e [2022-07-12 12:08:08,569 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:08:08,570 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 [2022-07-12 12:08:08,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c52fe082c/426f03f2cab24df3affefeedcfb67c6b/FLAG0cde3657e [2022-07-12 12:08:08,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c52fe082c/426f03f2cab24df3affefeedcfb67c6b [2022-07-12 12:08:08,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:08:08,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:08:08,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:08:08,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:08:08,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:08:08,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:08:08" (1/1) ... [2022-07-12 12:08:08,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dfd0b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:08, skipping insertion in model container [2022-07-12 12:08:08,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:08:08" (1/1) ... [2022-07-12 12:08:08,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:08:08,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:08:10,046 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] [2022-07-12 12:08:10,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:08:10,210 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:08:10,513 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] [2022-07-12 12:08:10,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:08:10,727 INFO L208 MainTranslator]: Completed translation [2022-07-12 12:08:10,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:10 WrapperNode [2022-07-12 12:08:10,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 12:08:10,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 12:08:10,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 12:08:10,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 12:08:10,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:10" (1/1) ... [2022-07-12 12:08:10,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:10" (1/1) ... [2022-07-12 12:08:11,010 INFO L137 Inliner]: procedures = 206, calls = 2928, calls flagged for inlining = 89, calls inlined = 81, statements flattened = 7953 [2022-07-12 12:08:11,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 12:08:11,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 12:08:11,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 12:08:11,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 12:08:11,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:10" (1/1) ... [2022-07-12 12:08:11,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:10" (1/1) ... [2022-07-12 12:08:11,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:10" (1/1) ... [2022-07-12 12:08:11,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:10" (1/1) ... [2022-07-12 12:08:11,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:10" (1/1) ... [2022-07-12 12:08:11,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:10" (1/1) ... [2022-07-12 12:08:11,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:10" (1/1) ... [2022-07-12 12:08:11,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 12:08:11,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 12:08:11,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 12:08:11,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 12:08:11,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:10" (1/1) ... [2022-07-12 12:08:11,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:08:11,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:08:11,401 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 12:08:11,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 12:08:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_read_value [2022-07-12 12:08:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_read_value [2022-07-12 12:08:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2022-07-12 12:08:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2022-07-12 12:08:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_detect [2022-07-12 12:08:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_detect [2022-07-12 12:08:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2022-07-12 12:08:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2022-07-12 12:08:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure store_beep [2022-07-12 12:08:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure store_beep [2022-07-12 12:08:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 12:08:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 12:08:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2022-07-12 12:08:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2022-07-12 12:08:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2022-07-12 12:08:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2022-07-12 12:08:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2022-07-12 12:08:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2022-07-12 12:08:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_FROM_REG [2022-07-12 12:08:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_FROM_REG [2022-07-12 12:08:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-12 12:08:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-12 12:08:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 12:08:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 12:08:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-07-12 12:08:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-07-12 12:08:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure show_sensor [2022-07-12 12:08:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sensor [2022-07-12 12:08:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-12 12:08:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-12 12:08:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2022-07-12 12:08:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2022-07-12 12:08:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 12:08:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max_hyst [2022-07-12 12:08:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max_hyst [2022-07-12 12:08:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2022-07-12 12:08:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2022-07-12 12:08:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-07-12 12:08:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-07-12 12:08:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-07-12 12:08:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-07-12 12:08:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_isa_unregister [2022-07-12 12:08:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_isa_unregister [2022-07-12 12:08:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2022-07-12 12:08:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2022-07-12 12:08:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 12:08:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure show_beep [2022-07-12 12:08:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure show_beep [2022-07-12 12:08:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-07-12 12:08:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-07-12 12:08:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 12:08:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 12:08:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-07-12 12:08:11,454 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-07-12 12:08:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-12 12:08:11,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-12 12:08:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2022-07-12 12:08:11,456 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2022-07-12 12:08:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2022-07-12 12:08:11,456 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2022-07-12 12:08:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-12 12:08:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-12 12:08:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure store_sensor [2022-07-12 12:08:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sensor [2022-07-12 12:08:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_update_device [2022-07-12 12:08:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_update_device [2022-07-12 12:08:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_remove_files [2022-07-12 12:08:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_remove_files [2022-07-12 12:08:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2022-07-12 12:08:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2022-07-12 12:08:11,458 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-12 12:08:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-12 12:08:11,458 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2022-07-12 12:08:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2022-07-12 12:08:11,458 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2022-07-12 12:08:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2022-07-12 12:08:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-07-12 12:08:11,459 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-07-12 12:08:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_w83781d_data [2022-07-12 12:08:11,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_w83781d_data [2022-07-12 12:08:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 12:08:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-07-12 12:08:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-07-12 12:08:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-07-12 12:08:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-07-12 12:08:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2022-07-12 12:08:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2022-07-12 12:08:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2022-07-12 12:08:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2022-07-12 12:08:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2022-07-12 12:08:11,461 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2022-07-12 12:08:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 12:08:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2022-07-12 12:08:11,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2022-07-12 12:08:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2022-07-12 12:08:11,462 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2022-07-12 12:08:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 12:08:11,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 12:08:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_w83781d_data [2022-07-12 12:08:11,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_w83781d_data [2022-07-12 12:08:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max [2022-07-12 12:08:11,463 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max [2022-07-12 12:08:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_write_value [2022-07-12 12:08:11,463 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_write_value [2022-07-12 12:08:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 12:08:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2022-07-12 12:08:11,464 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2022-07-12 12:08:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 12:08:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2022-07-12 12:08:11,464 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2022-07-12 12:08:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 12:08:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2022-07-12 12:08:11,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2022-07-12 12:08:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2022-07-12 12:08:11,465 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2022-07-12 12:08:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max_hyst [2022-07-12 12:08:11,465 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max_hyst [2022-07-12 12:08:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2022-07-12 12:08:11,466 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2022-07-12 12:08:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 12:08:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-07-12 12:08:11,468 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-07-12 12:08:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 12:08:11,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 12:08:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-12 12:08:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-12 12:08:12,316 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 12:08:12,318 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 12:08:17,073 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 12:08:17,092 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 12:08:17,092 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 12:08:17,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:08:17 BoogieIcfgContainer [2022-07-12 12:08:17,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 12:08:17,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 12:08:17,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 12:08:17,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 12:08:17,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:08:08" (1/3) ... [2022-07-12 12:08:17,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e01fd9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:08:17, skipping insertion in model container [2022-07-12 12:08:17,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:08:10" (2/3) ... [2022-07-12 12:08:17,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e01fd9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:08:17, skipping insertion in model container [2022-07-12 12:08:17,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:08:17" (3/3) ... [2022-07-12 12:08:17,104 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2022-07-12 12:08:17,114 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 12:08:17,114 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 12:08:17,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 12:08:17,193 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@50ea1989, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@670a04a3 [2022-07-12 12:08:17,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 12:08:17,203 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) [2022-07-12 12:08:17,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-12 12:08:17,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:17,223 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] [2022-07-12 12:08:17,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:17,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:17,229 INFO L85 PathProgramCache]: Analyzing trace with hash 100309635, now seen corresponding path program 1 times [2022-07-12 12:08:17,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:17,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070872022] [2022-07-12 12:08:17,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:17,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:17,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:08:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:17,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:17,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:08:17,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:17,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070872022] [2022-07-12 12:08:17,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070872022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:17,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:17,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:08:17,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813147064] [2022-07-12 12:08:17,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:17,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:08:17,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:17,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:08:17,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:08:17,946 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) [2022-07-12 12:08:20,245 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 [] [2022-07-12 12:08:22,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:22,374 INFO L93 Difference]: Finished difference Result 5910 states and 9983 transitions. [2022-07-12 12:08:22,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:08:22,376 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 [2022-07-12 12:08:22,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:22,400 INFO L225 Difference]: With dead ends: 5910 [2022-07-12 12:08:22,400 INFO L226 Difference]: Without dead ends: 3935 [2022-07-12 12:08:22,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:08:22,421 INFO L413 NwaCegarLoop]: 3776 mSDtfsCounter, 3077 mSDsluCounter, 5199 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 939 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3337 SdHoareTripleChecker+Valid, 8975 SdHoareTripleChecker+Invalid, 2035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:22,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3337 Valid, 8975 Invalid, 2035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [939 Valid, 1095 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-07-12 12:08:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2022-07-12 12:08:22,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 3899. [2022-07-12 12:08:22,595 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) [2022-07-12 12:08:22,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3899 states to 3899 states and 6139 transitions. [2022-07-12 12:08:22,621 INFO L78 Accepts]: Start accepts. Automaton has 3899 states and 6139 transitions. Word has length 28 [2022-07-12 12:08:22,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:22,621 INFO L495 AbstractCegarLoop]: Abstraction has 3899 states and 6139 transitions. [2022-07-12 12:08:22,621 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) [2022-07-12 12:08:22,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3899 states and 6139 transitions. [2022-07-12 12:08:22,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-12 12:08:22,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:22,624 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] [2022-07-12 12:08:22,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 12:08:22,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:22,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:22,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1655363240, now seen corresponding path program 1 times [2022-07-12 12:08:22,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:22,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375305021] [2022-07-12 12:08:22,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:22,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 12:08:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:08:22,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:22,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375305021] [2022-07-12 12:08:22,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375305021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:22,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:22,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:08:22,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237644121] [2022-07-12 12:08:22,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:22,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:08:22,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:22,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:08:22,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:08:22,936 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) [2022-07-12 12:08:25,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:25,329 INFO L93 Difference]: Finished difference Result 11703 states and 18485 transitions. [2022-07-12 12:08:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:08:25,330 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 [2022-07-12 12:08:25,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:25,372 INFO L225 Difference]: With dead ends: 11703 [2022-07-12 12:08:25,372 INFO L226 Difference]: Without dead ends: 7807 [2022-07-12 12:08:25,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:08:25,396 INFO L413 NwaCegarLoop]: 3979 mSDtfsCounter, 3055 mSDsluCounter, 5309 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 888 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3301 SdHoareTripleChecker+Valid, 9288 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 888 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:25,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3301 Valid, 9288 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [888 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 12:08:25,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7807 states. [2022-07-12 12:08:25,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7807 to 7755. [2022-07-12 12:08:25,656 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) [2022-07-12 12:08:25,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7755 states to 7755 states and 12216 transitions. [2022-07-12 12:08:25,696 INFO L78 Accepts]: Start accepts. Automaton has 7755 states and 12216 transitions. Word has length 32 [2022-07-12 12:08:25,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:25,696 INFO L495 AbstractCegarLoop]: Abstraction has 7755 states and 12216 transitions. [2022-07-12 12:08:25,696 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) [2022-07-12 12:08:25,697 INFO L276 IsEmpty]: Start isEmpty. Operand 7755 states and 12216 transitions. [2022-07-12 12:08:25,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-12 12:08:25,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:25,698 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] [2022-07-12 12:08:25,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 12:08:25,698 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:25,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:25,699 INFO L85 PathProgramCache]: Analyzing trace with hash 441483741, now seen corresponding path program 1 times [2022-07-12 12:08:25,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:25,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389850117] [2022-07-12 12:08:25,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:25,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:26,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 12:08:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:26,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:26,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:08:26,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:26,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389850117] [2022-07-12 12:08:26,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389850117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:26,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:26,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:08:26,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477332732] [2022-07-12 12:08:26,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:26,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:08:26,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:26,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:08:26,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:08:26,096 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) [2022-07-12 12:08:29,848 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 [] [2022-07-12 12:08:30,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:30,825 INFO L93 Difference]: Finished difference Result 23299 states and 36818 transitions. [2022-07-12 12:08:30,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:08:30,825 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 [2022-07-12 12:08:30,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:30,893 INFO L225 Difference]: With dead ends: 23299 [2022-07-12 12:08:30,893 INFO L226 Difference]: Without dead ends: 15547 [2022-07-12 12:08:30,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:08:30,926 INFO L413 NwaCegarLoop]: 3949 mSDtfsCounter, 3107 mSDsluCounter, 5338 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 900 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3355 SdHoareTripleChecker+Valid, 9287 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:30,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3355 Valid, 9287 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 1109 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-07-12 12:08:30,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15547 states. [2022-07-12 12:08:31,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15547 to 15463. [2022-07-12 12:08:31,308 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) [2022-07-12 12:08:31,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15463 states to 15463 states and 24362 transitions. [2022-07-12 12:08:31,377 INFO L78 Accepts]: Start accepts. Automaton has 15463 states and 24362 transitions. Word has length 29 [2022-07-12 12:08:31,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:31,378 INFO L495 AbstractCegarLoop]: Abstraction has 15463 states and 24362 transitions. [2022-07-12 12:08:31,379 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) [2022-07-12 12:08:31,379 INFO L276 IsEmpty]: Start isEmpty. Operand 15463 states and 24362 transitions. [2022-07-12 12:08:31,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-12 12:08:31,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:31,380 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] [2022-07-12 12:08:31,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 12:08:31,381 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:31,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:31,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1843634687, now seen corresponding path program 1 times [2022-07-12 12:08:31,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:31,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3119905] [2022-07-12 12:08:31,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:31,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:31,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 12:08:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:31,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:08:31,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:31,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3119905] [2022-07-12 12:08:31,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3119905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:31,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:31,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:08:31,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490475105] [2022-07-12 12:08:31,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:31,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:08:31,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:31,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:08:31,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:08:31,686 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) [2022-07-12 12:08:35,259 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 [] [2022-07-12 12:08:36,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:36,119 INFO L93 Difference]: Finished difference Result 46463 states and 73432 transitions. [2022-07-12 12:08:36,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:08:36,120 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 [2022-07-12 12:08:36,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:36,231 INFO L225 Difference]: With dead ends: 46463 [2022-07-12 12:08:36,231 INFO L226 Difference]: Without dead ends: 31003 [2022-07-12 12:08:36,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:08:36,295 INFO L413 NwaCegarLoop]: 3956 mSDtfsCounter, 3106 mSDsluCounter, 5359 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 900 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3366 SdHoareTripleChecker+Valid, 9315 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:36,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3366 Valid, 9315 Invalid, 2009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 1108 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-07-12 12:08:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31003 states. [2022-07-12 12:08:37,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31003 to 30855. [2022-07-12 12:08:37,113 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) [2022-07-12 12:08:37,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30855 states to 30855 states and 48610 transitions. [2022-07-12 12:08:37,288 INFO L78 Accepts]: Start accepts. Automaton has 30855 states and 48610 transitions. Word has length 32 [2022-07-12 12:08:37,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:37,289 INFO L495 AbstractCegarLoop]: Abstraction has 30855 states and 48610 transitions. [2022-07-12 12:08:37,289 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) [2022-07-12 12:08:37,289 INFO L276 IsEmpty]: Start isEmpty. Operand 30855 states and 48610 transitions. [2022-07-12 12:08:37,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-12 12:08:37,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:37,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:08:37,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 12:08:37,293 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:37,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:37,294 INFO L85 PathProgramCache]: Analyzing trace with hash 153779286, now seen corresponding path program 1 times [2022-07-12 12:08:37,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:37,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830289324] [2022-07-12 12:08:37,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:37,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:37,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:08:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:37,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:08:37,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:37,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830289324] [2022-07-12 12:08:37,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830289324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:37,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:37,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:08:37,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230413164] [2022-07-12 12:08:37,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:37,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:08:37,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:37,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:08:37,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:08:37,548 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) [2022-07-12 12:08:40,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:40,857 INFO L93 Difference]: Finished difference Result 92655 states and 146416 transitions. [2022-07-12 12:08:40,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:08:40,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-07-12 12:08:40,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:41,183 INFO L225 Difference]: With dead ends: 92655 [2022-07-12 12:08:41,184 INFO L226 Difference]: Without dead ends: 61803 [2022-07-12 12:08:41,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:08:41,440 INFO L413 NwaCegarLoop]: 3965 mSDtfsCounter, 3098 mSDsluCounter, 5364 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 898 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3357 SdHoareTripleChecker+Valid, 9329 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:41,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3357 Valid, 9329 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [898 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 12:08:41,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61803 states. [2022-07-12 12:08:43,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61803 to 61527. [2022-07-12 12:08:43,431 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) [2022-07-12 12:08:43,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61527 states to 61527 states and 96906 transitions. [2022-07-12 12:08:44,003 INFO L78 Accepts]: Start accepts. Automaton has 61527 states and 96906 transitions. Word has length 34 [2022-07-12 12:08:44,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:44,004 INFO L495 AbstractCegarLoop]: Abstraction has 61527 states and 96906 transitions. [2022-07-12 12:08:44,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 12:08:44,005 INFO L276 IsEmpty]: Start isEmpty. Operand 61527 states and 96906 transitions. [2022-07-12 12:08:44,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-12 12:08:44,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:44,005 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] [2022-07-12 12:08:44,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 12:08:44,006 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:44,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:44,006 INFO L85 PathProgramCache]: Analyzing trace with hash -17277589, now seen corresponding path program 1 times [2022-07-12 12:08:44,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:44,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101155259] [2022-07-12 12:08:44,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:44,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:44,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 12:08:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:44,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:44,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:08:44,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:44,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101155259] [2022-07-12 12:08:44,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101155259] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:44,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:44,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:08:44,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439621001] [2022-07-12 12:08:44,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:44,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:08:44,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:44,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:08:44,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:08:44,276 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) [2022-07-12 12:08:48,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:48,331 INFO L93 Difference]: Finished difference Result 184767 states and 291896 transitions. [2022-07-12 12:08:48,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:08:48,348 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 [2022-07-12 12:08:48,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:49,302 INFO L225 Difference]: With dead ends: 184767 [2022-07-12 12:08:49,303 INFO L226 Difference]: Without dead ends: 123243 [2022-07-12 12:08:49,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:08:49,560 INFO L413 NwaCegarLoop]: 3865 mSDtfsCounter, 3019 mSDsluCounter, 5194 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 902 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3268 SdHoareTripleChecker+Valid, 9059 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 902 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:49,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3268 Valid, 9059 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [902 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 12:08:49,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123243 states. [2022-07-12 12:08:52,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123243 to 122711. [2022-07-12 12:08:52,791 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) [2022-07-12 12:08:53,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122711 states to 122711 states and 193210 transitions. [2022-07-12 12:08:53,896 INFO L78 Accepts]: Start accepts. Automaton has 122711 states and 193210 transitions. Word has length 31 [2022-07-12 12:08:53,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:53,897 INFO L495 AbstractCegarLoop]: Abstraction has 122711 states and 193210 transitions. [2022-07-12 12:08:53,897 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) [2022-07-12 12:08:53,897 INFO L276 IsEmpty]: Start isEmpty. Operand 122711 states and 193210 transitions. [2022-07-12 12:08:53,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-12 12:08:53,898 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:53,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:08:53,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 12:08:53,899 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:53,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:53,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1511922726, now seen corresponding path program 1 times [2022-07-12 12:08:53,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:53,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008554728] [2022-07-12 12:08:53,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:53,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:54,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:08:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:54,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:54,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:08:54,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:54,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008554728] [2022-07-12 12:08:54,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008554728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:54,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:54,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:08:54,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255778245] [2022-07-12 12:08:54,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:54,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:08:54,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:54,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:08:54,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:08:54,169 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) [2022-07-12 12:09:01,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:09:01,258 INFO L93 Difference]: Finished difference Result 368767 states and 582440 transitions. [2022-07-12 12:09:01,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:09:01,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-07-12 12:09:01,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:09:03,168 INFO L225 Difference]: With dead ends: 368767 [2022-07-12 12:09:03,168 INFO L226 Difference]: Without dead ends: 246059 [2022-07-12 12:09:03,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:09:03,965 INFO L413 NwaCegarLoop]: 4310 mSDtfsCounter, 3058 mSDsluCounter, 5576 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 823 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3307 SdHoareTripleChecker+Valid, 9886 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 823 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:09:03,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3307 Valid, 9886 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [823 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 12:09:04,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246059 states. [2022-07-12 12:09:10,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246059 to 245015. [2022-07-12 12:09:11,176 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) [2022-07-12 12:09:13,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245015 states to 245015 states and 385690 transitions. [2022-07-12 12:09:13,521 INFO L78 Accepts]: Start accepts. Automaton has 245015 states and 385690 transitions. Word has length 34 [2022-07-12 12:09:13,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:09:13,523 INFO L495 AbstractCegarLoop]: Abstraction has 245015 states and 385690 transitions. [2022-07-12 12:09:13,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 12:09:13,523 INFO L276 IsEmpty]: Start isEmpty. Operand 245015 states and 385690 transitions. [2022-07-12 12:09:13,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 12:09:13,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:09:13,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:09:13,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 12:09:13,525 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:09:13,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:09:13,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1384382779, now seen corresponding path program 1 times [2022-07-12 12:09:13,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:09:13,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275700310] [2022-07-12 12:09:13,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:09:13,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:09:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:09:13,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 12:09:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:09:13,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:09:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:09:13,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:09:13,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:09:13,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275700310] [2022-07-12 12:09:13,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275700310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:09:13,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:09:13,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:09:13,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690800990] [2022-07-12 12:09:13,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:09:13,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:09:13,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:09:13,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:09:13,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:09:13,760 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) [2022-07-12 12:09:23,046 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 [] [2022-07-12 12:09:25,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []