./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 35987657 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-?-3598765 [2022-07-21 10:42:12,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 10:42:12,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 10:42:12,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 10:42:12,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 10:42:12,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 10:42:12,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 10:42:12,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 10:42:12,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 10:42:12,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 10:42:12,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 10:42:12,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 10:42:12,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 10:42:12,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 10:42:12,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 10:42:12,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 10:42:12,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 10:42:12,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 10:42:12,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 10:42:12,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 10:42:12,812 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 10:42:12,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 10:42:12,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 10:42:12,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 10:42:12,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 10:42:12,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 10:42:12,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 10:42:12,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 10:42:12,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 10:42:12,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 10:42:12,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 10:42:12,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 10:42:12,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 10:42:12,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 10:42:12,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 10:42:12,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 10:42:12,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 10:42:12,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 10:42:12,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 10:42:12,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 10:42:12,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 10:42:12,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 10:42:12,831 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 10:42:12,853 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 10:42:12,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 10:42:12,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 10:42:12,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 10:42:12,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 10:42:12,855 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 10:42:12,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 10:42:12,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 10:42:12,856 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 10:42:12,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 10:42:12,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 10:42:12,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 10:42:12,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 10:42:12,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 10:42:12,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 10:42:12,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 10:42:12,863 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 10:42:12,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 10:42:12,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 10:42:12,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 10:42:12,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 10:42:12,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 10:42:12,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 10:42:12,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 10:42:12,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 10:42:12,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 10:42:12,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 10:42:12,865 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 10:42:12,865 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 10:42:12,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 10:42:12,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 [2022-07-21 10:42:13,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 10:42:13,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 10:42:13,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 10:42:13,194 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 10:42:13,194 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 10:42:13,196 INFO L432 ainManager$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 [2022-07-21 10:42:13,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b759aa0dc/5d310081710c4af0966290be9dca340b/FLAG2c7c19948 [2022-07-21 10:42:13,897 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 10:42:13,898 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 [2022-07-21 10:42:13,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b759aa0dc/5d310081710c4af0966290be9dca340b/FLAG2c7c19948 [2022-07-21 10:42:14,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b759aa0dc/5d310081710c4af0966290be9dca340b [2022-07-21 10:42:14,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 10:42:14,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 10:42:14,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 10:42:14,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 10:42:14,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 10:42:14,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:42:14" (1/1) ... [2022-07-21 10:42:14,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b951298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:14, skipping insertion in model container [2022-07-21 10:42:14,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:42:14" (1/1) ... [2022-07-21 10:42:14,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 10:42:14,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 10:42:15,361 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] [2022-07-21 10:42:15,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:42:15,489 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 10:42:15,690 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] [2022-07-21 10:42:15,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:42:15,903 INFO L208 MainTranslator]: Completed translation [2022-07-21 10:42:15,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:15 WrapperNode [2022-07-21 10:42:15,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 10:42:15,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 10:42:15,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 10:42:15,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 10:42:15,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:15" (1/1) ... [2022-07-21 10:42:16,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:15" (1/1) ... [2022-07-21 10:42:16,233 INFO L137 Inliner]: procedures = 206, calls = 2928, calls flagged for inlining = 89, calls inlined = 81, statements flattened = 7953 [2022-07-21 10:42:16,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 10:42:16,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 10:42:16,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 10:42:16,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 10:42:16,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:15" (1/1) ... [2022-07-21 10:42:16,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:15" (1/1) ... [2022-07-21 10:42:16,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:15" (1/1) ... [2022-07-21 10:42:16,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:15" (1/1) ... [2022-07-21 10:42:16,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:15" (1/1) ... [2022-07-21 10:42:16,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:15" (1/1) ... [2022-07-21 10:42:16,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:15" (1/1) ... [2022-07-21 10:42:16,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 10:42:16,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 10:42:16,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 10:42:16,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 10:42:16,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:15" (1/1) ... [2022-07-21 10:42:16,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 10:42:16,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 10:42:16,680 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) [2022-07-21 10:42:16,772 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 [2022-07-21 10:42:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_read_value [2022-07-21 10:42:16,796 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_read_value [2022-07-21 10:42:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2022-07-21 10:42:16,796 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2022-07-21 10:42:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_detect [2022-07-21 10:42:16,797 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_detect [2022-07-21 10:42:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2022-07-21 10:42:16,797 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2022-07-21 10:42:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure store_beep [2022-07-21 10:42:16,797 INFO L138 BoogieDeclarations]: Found implementation of procedure store_beep [2022-07-21 10:42:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 10:42:16,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 10:42:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2022-07-21 10:42:16,798 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2022-07-21 10:42:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2022-07-21 10:42:16,798 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2022-07-21 10:42:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2022-07-21 10:42:16,798 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2022-07-21 10:42:16,813 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_FROM_REG [2022-07-21 10:42:16,813 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_FROM_REG [2022-07-21 10:42:16,813 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 10:42:16,813 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 10:42:16,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 10:42:16,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 10:42:16,814 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-07-21 10:42:16,814 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-07-21 10:42:16,814 INFO L130 BoogieDeclarations]: Found specification of procedure show_sensor [2022-07-21 10:42:16,814 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sensor [2022-07-21 10:42:16,814 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-21 10:42:16,814 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-21 10:42:16,814 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2022-07-21 10:42:16,815 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2022-07-21 10:42:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 10:42:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max_hyst [2022-07-21 10:42:16,815 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max_hyst [2022-07-21 10:42:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2022-07-21 10:42:16,816 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2022-07-21 10:42:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-07-21 10:42:16,816 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-07-21 10:42:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-07-21 10:42:16,816 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-07-21 10:42:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_isa_unregister [2022-07-21 10:42:16,817 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_isa_unregister [2022-07-21 10:42:16,817 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2022-07-21 10:42:16,817 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2022-07-21 10:42:16,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 10:42:16,817 INFO L130 BoogieDeclarations]: Found specification of procedure show_beep [2022-07-21 10:42:16,817 INFO L138 BoogieDeclarations]: Found implementation of procedure show_beep [2022-07-21 10:42:16,817 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-07-21 10:42:16,818 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-07-21 10:42:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 10:42:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 10:42:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-07-21 10:42:16,818 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-07-21 10:42:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-21 10:42:16,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-21 10:42:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2022-07-21 10:42:16,820 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2022-07-21 10:42:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2022-07-21 10:42:16,820 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2022-07-21 10:42:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-21 10:42:16,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-21 10:42:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure store_sensor [2022-07-21 10:42:16,821 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sensor [2022-07-21 10:42:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_update_device [2022-07-21 10:42:16,821 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_update_device [2022-07-21 10:42:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_remove_files [2022-07-21 10:42:16,821 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_remove_files [2022-07-21 10:42:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2022-07-21 10:42:16,822 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2022-07-21 10:42:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-21 10:42:16,822 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-21 10:42:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2022-07-21 10:42:16,823 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2022-07-21 10:42:16,823 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2022-07-21 10:42:16,823 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2022-07-21 10:42:16,823 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-07-21 10:42:16,823 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-07-21 10:42:16,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_w83781d_data [2022-07-21 10:42:16,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_w83781d_data [2022-07-21 10:42:16,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 10:42:16,824 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-07-21 10:42:16,824 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-07-21 10:42:16,824 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-07-21 10:42:16,824 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-07-21 10:42:16,824 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2022-07-21 10:42:16,824 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2022-07-21 10:42:16,824 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2022-07-21 10:42:16,825 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2022-07-21 10:42:16,825 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2022-07-21 10:42:16,825 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2022-07-21 10:42:16,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 10:42:16,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2022-07-21 10:42:16,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2022-07-21 10:42:16,826 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2022-07-21 10:42:16,826 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2022-07-21 10:42:16,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 10:42:16,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 10:42:16,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_w83781d_data [2022-07-21 10:42:16,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_w83781d_data [2022-07-21 10:42:16,828 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max [2022-07-21 10:42:16,828 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max [2022-07-21 10:42:16,828 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_write_value [2022-07-21 10:42:16,828 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_write_value [2022-07-21 10:42:16,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 10:42:16,828 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2022-07-21 10:42:16,828 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2022-07-21 10:42:16,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 10:42:16,828 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2022-07-21 10:42:16,829 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2022-07-21 10:42:16,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 10:42:16,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2022-07-21 10:42:16,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2022-07-21 10:42:16,830 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2022-07-21 10:42:16,830 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2022-07-21 10:42:16,830 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max_hyst [2022-07-21 10:42:16,830 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max_hyst [2022-07-21 10:42:16,831 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2022-07-21 10:42:16,831 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2022-07-21 10:42:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 10:42:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-07-21 10:42:16,833 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-07-21 10:42:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 10:42:16,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 10:42:16,835 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-21 10:42:16,835 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-21 10:42:17,501 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 10:42:17,504 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 10:42:22,222 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 10:42:22,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 10:42:22,234 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 10:42:22,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:42:22 BoogieIcfgContainer [2022-07-21 10:42:22,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 10:42:22,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 10:42:22,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 10:42:22,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 10:42:22,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:42:14" (1/3) ... [2022-07-21 10:42:22,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777e1146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:42:22, skipping insertion in model container [2022-07-21 10:42:22,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:15" (2/3) ... [2022-07-21 10:42:22,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777e1146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:42:22, skipping insertion in model container [2022-07-21 10:42:22,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:42:22" (3/3) ... [2022-07-21 10:42:22,241 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2022-07-21 10:42:22,250 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 10:42:22,250 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 10:42:22,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 10:42:22,307 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@21fd6c5f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7fc75e99 [2022-07-21 10:42:22,307 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 10:42:22,313 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) [2022-07-21 10:42:22,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-21 10:42:22,322 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:42:22,322 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] [2022-07-21 10:42:22,322 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:42:22,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:42:22,326 INFO L85 PathProgramCache]: Analyzing trace with hash 100309635, now seen corresponding path program 1 times [2022-07-21 10:42:22,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:42:22,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954250284] [2022-07-21 10:42:22,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:42:22,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:42:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:23,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 10:42:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:23,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:42:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:42:23,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:42:23,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954250284] [2022-07-21 10:42:23,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954250284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:42:23,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:42:23,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:42:23,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685176581] [2022-07-21 10:42:23,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:42:23,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:42:23,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:42:23,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:42:23,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:42:23,127 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) [2022-07-21 10:42:25,495 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 [] [2022-07-21 10:42:27,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:42:27,657 INFO L93 Difference]: Finished difference Result 5910 states and 9983 transitions. [2022-07-21 10:42:27,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:42:27,659 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 [2022-07-21 10:42:27,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:42:27,683 INFO L225 Difference]: With dead ends: 5910 [2022-07-21 10:42:27,683 INFO L226 Difference]: Without dead ends: 3935 [2022-07-21 10:42:27,705 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 [2022-07-21 10:42:27,707 INFO L413 NwaCegarLoop]: 3789 mSDtfsCounter, 3075 mSDsluCounter, 5209 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 938 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3323 SdHoareTripleChecker+Valid, 8998 SdHoareTripleChecker+Invalid, 2035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-21 10:42:27,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3323 Valid, 8998 Invalid, 2035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [938 Valid, 1096 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-07-21 10:42:27,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2022-07-21 10:42:27,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 3899. [2022-07-21 10:42:27,874 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) [2022-07-21 10:42:27,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3899 states to 3899 states and 6139 transitions. [2022-07-21 10:42:27,898 INFO L78 Accepts]: Start accepts. Automaton has 3899 states and 6139 transitions. Word has length 28 [2022-07-21 10:42:27,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:42:27,899 INFO L495 AbstractCegarLoop]: Abstraction has 3899 states and 6139 transitions. [2022-07-21 10:42:27,899 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) [2022-07-21 10:42:27,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3899 states and 6139 transitions. [2022-07-21 10:42:27,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-21 10:42:27,905 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:42:27,905 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] [2022-07-21 10:42:27,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 10:42:27,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:42:27,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:42:27,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1655363240, now seen corresponding path program 1 times [2022-07-21 10:42:27,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:42:27,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26308427] [2022-07-21 10:42:27,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:42:27,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:42:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:28,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 10:42:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:28,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:42:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:42:28,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:42:28,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26308427] [2022-07-21 10:42:28,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26308427] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:42:28,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:42:28,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:42:28,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43107109] [2022-07-21 10:42:28,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:42:28,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:42:28,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:42:28,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:42:28,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:42:28,246 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) [2022-07-21 10:42:30,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:42:30,860 INFO L93 Difference]: Finished difference Result 11703 states and 18485 transitions. [2022-07-21 10:42:30,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:42:30,860 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 [2022-07-21 10:42:30,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:42:30,904 INFO L225 Difference]: With dead ends: 11703 [2022-07-21 10:42:30,905 INFO L226 Difference]: Without dead ends: 7807 [2022-07-21 10:42:30,927 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 [2022-07-21 10:42:30,928 INFO L413 NwaCegarLoop]: 3964 mSDtfsCounter, 3057 mSDsluCounter, 5298 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 889 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3318 SdHoareTripleChecker+Valid, 9262 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 889 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 10:42:30,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3318 Valid, 9262 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [889 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 10:42:30,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7807 states. [2022-07-21 10:42:31,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7807 to 7755. [2022-07-21 10:42:31,137 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) [2022-07-21 10:42:31,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7755 states to 7755 states and 12216 transitions. [2022-07-21 10:42:31,169 INFO L78 Accepts]: Start accepts. Automaton has 7755 states and 12216 transitions. Word has length 32 [2022-07-21 10:42:31,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:42:31,169 INFO L495 AbstractCegarLoop]: Abstraction has 7755 states and 12216 transitions. [2022-07-21 10:42:31,169 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) [2022-07-21 10:42:31,170 INFO L276 IsEmpty]: Start isEmpty. Operand 7755 states and 12216 transitions. [2022-07-21 10:42:31,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-21 10:42:31,171 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:42:31,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:42:31,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 10:42:31,174 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:42:31,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:42:31,175 INFO L85 PathProgramCache]: Analyzing trace with hash 441483741, now seen corresponding path program 1 times [2022-07-21 10:42:31,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:42:31,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627913338] [2022-07-21 10:42:31,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:42:31,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:42:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:31,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 10:42:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:31,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:42:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:31,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:42:31,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:42:31,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627913338] [2022-07-21 10:42:31,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627913338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:42:31,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:42:31,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:42:31,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544521464] [2022-07-21 10:42:31,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:42:31,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:42:31,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:42:31,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:42:31,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:42:31,569 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) [2022-07-21 10:42:34,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:42:34,168 INFO L93 Difference]: Finished difference Result 23299 states and 36818 transitions. [2022-07-21 10:42:34,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:42:34,168 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 [2022-07-21 10:42:34,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:42:34,243 INFO L225 Difference]: With dead ends: 23299 [2022-07-21 10:42:34,243 INFO L226 Difference]: Without dead ends: 15547 [2022-07-21 10:42:34,283 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 [2022-07-21 10:42:34,284 INFO L413 NwaCegarLoop]: 3948 mSDtfsCounter, 3107 mSDsluCounter, 5337 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3356 SdHoareTripleChecker+Valid, 9285 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 10:42:34,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3356 Valid, 9285 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 10:42:34,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15547 states. [2022-07-21 10:42:34,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15547 to 15463. [2022-07-21 10:42:34,777 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) [2022-07-21 10:42:34,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15463 states to 15463 states and 24362 transitions. [2022-07-21 10:42:34,829 INFO L78 Accepts]: Start accepts. Automaton has 15463 states and 24362 transitions. Word has length 29 [2022-07-21 10:42:34,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:42:34,830 INFO L495 AbstractCegarLoop]: Abstraction has 15463 states and 24362 transitions. [2022-07-21 10:42:34,830 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) [2022-07-21 10:42:34,830 INFO L276 IsEmpty]: Start isEmpty. Operand 15463 states and 24362 transitions. [2022-07-21 10:42:34,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-21 10:42:34,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:42:34,832 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] [2022-07-21 10:42:34,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 10:42:34,833 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:42:34,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:42:34,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1843634687, now seen corresponding path program 1 times [2022-07-21 10:42:34,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:42:34,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2307042] [2022-07-21 10:42:34,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:42:34,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:42:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:35,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 10:42:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:35,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:42:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:42:35,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:42:35,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2307042] [2022-07-21 10:42:35,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2307042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:42:35,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:42:35,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:42:35,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247193424] [2022-07-21 10:42:35,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:42:35,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:42:35,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:42:35,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:42:35,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:42:35,159 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) [2022-07-21 10:42:37,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:42:37,551 INFO L93 Difference]: Finished difference Result 46463 states and 73432 transitions. [2022-07-21 10:42:37,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:42:37,552 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 [2022-07-21 10:42:37,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:42:37,762 INFO L225 Difference]: With dead ends: 46463 [2022-07-21 10:42:37,762 INFO L226 Difference]: Without dead ends: 31003 [2022-07-21 10:42:37,845 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 [2022-07-21 10:42:37,851 INFO L413 NwaCegarLoop]: 3972 mSDtfsCounter, 3104 mSDsluCounter, 5374 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 899 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3351 SdHoareTripleChecker+Valid, 9346 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 899 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 10:42:37,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3351 Valid, 9346 Invalid, 2009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [899 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 10:42:37,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31003 states. [2022-07-21 10:42:38,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31003 to 30855. [2022-07-21 10:42:38,711 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) [2022-07-21 10:42:38,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30855 states to 30855 states and 48610 transitions. [2022-07-21 10:42:38,849 INFO L78 Accepts]: Start accepts. Automaton has 30855 states and 48610 transitions. Word has length 32 [2022-07-21 10:42:38,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:42:38,849 INFO L495 AbstractCegarLoop]: Abstraction has 30855 states and 48610 transitions. [2022-07-21 10:42:38,849 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) [2022-07-21 10:42:38,850 INFO L276 IsEmpty]: Start isEmpty. Operand 30855 states and 48610 transitions. [2022-07-21 10:42:38,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-21 10:42:38,852 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:42:38,852 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] [2022-07-21 10:42:38,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 10:42:38,852 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:42:38,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:42:38,853 INFO L85 PathProgramCache]: Analyzing trace with hash 153779286, now seen corresponding path program 1 times [2022-07-21 10:42:38,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:42:38,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546022692] [2022-07-21 10:42:38,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:42:38,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:42:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:39,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 10:42:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:39,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:42:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:42:39,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:42:39,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546022692] [2022-07-21 10:42:39,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546022692] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:42:39,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:42:39,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:42:39,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764511859] [2022-07-21 10:42:39,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:42:39,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:42:39,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:42:39,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:42:39,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:42:39,161 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) [2022-07-21 10:42:41,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:42:41,978 INFO L93 Difference]: Finished difference Result 92655 states and 146416 transitions. [2022-07-21 10:42:41,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:42:41,979 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 [2022-07-21 10:42:41,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:42:42,244 INFO L225 Difference]: With dead ends: 92655 [2022-07-21 10:42:42,245 INFO L226 Difference]: Without dead ends: 61803 [2022-07-21 10:42:42,569 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 [2022-07-21 10:42:42,572 INFO L413 NwaCegarLoop]: 3964 mSDtfsCounter, 3098 mSDsluCounter, 5362 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 898 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3357 SdHoareTripleChecker+Valid, 9326 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 10:42:42,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3357 Valid, 9326 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [898 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 10:42:42,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61803 states. [2022-07-21 10:42:43,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61803 to 61527. [2022-07-21 10:42:44,049 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) [2022-07-21 10:42:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61527 states to 61527 states and 96906 transitions. [2022-07-21 10:42:44,653 INFO L78 Accepts]: Start accepts. Automaton has 61527 states and 96906 transitions. Word has length 34 [2022-07-21 10:42:44,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:42:44,653 INFO L495 AbstractCegarLoop]: Abstraction has 61527 states and 96906 transitions. [2022-07-21 10:42:44,654 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) [2022-07-21 10:42:44,654 INFO L276 IsEmpty]: Start isEmpty. Operand 61527 states and 96906 transitions. [2022-07-21 10:42:44,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-21 10:42:44,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:42:44,655 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] [2022-07-21 10:42:44,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 10:42:44,655 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:42:44,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:42:44,656 INFO L85 PathProgramCache]: Analyzing trace with hash -17277589, now seen corresponding path program 1 times [2022-07-21 10:42:44,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:42:44,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202238793] [2022-07-21 10:42:44,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:42:44,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:42:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:45,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 10:42:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:45,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:42:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:45,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:42:45,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:42:45,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202238793] [2022-07-21 10:42:45,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202238793] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:42:45,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:42:45,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:42:45,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460162286] [2022-07-21 10:42:45,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:42:45,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:42:45,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:42:45,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:42:45,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:42:45,117 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) [2022-07-21 10:42:49,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:42:49,772 INFO L93 Difference]: Finished difference Result 184767 states and 291896 transitions. [2022-07-21 10:42:49,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:42:49,772 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 [2022-07-21 10:42:49,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:42:50,299 INFO L225 Difference]: With dead ends: 184767 [2022-07-21 10:42:50,299 INFO L226 Difference]: Without dead ends: 123243 [2022-07-21 10:42:50,784 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 [2022-07-21 10:42:50,786 INFO L413 NwaCegarLoop]: 3838 mSDtfsCounter, 3021 mSDsluCounter, 5155 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3282 SdHoareTripleChecker+Valid, 8993 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:42:50,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3282 Valid, 8993 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 10:42:50,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123243 states. [2022-07-21 10:42:53,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123243 to 122711. [2022-07-21 10:42:53,966 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) [2022-07-21 10:42:55,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122711 states to 122711 states and 193210 transitions. [2022-07-21 10:42:55,092 INFO L78 Accepts]: Start accepts. Automaton has 122711 states and 193210 transitions. Word has length 31 [2022-07-21 10:42:55,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:42:55,093 INFO L495 AbstractCegarLoop]: Abstraction has 122711 states and 193210 transitions. [2022-07-21 10:42:55,093 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) [2022-07-21 10:42:55,093 INFO L276 IsEmpty]: Start isEmpty. Operand 122711 states and 193210 transitions. [2022-07-21 10:42:55,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-21 10:42:55,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:42:55,094 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] [2022-07-21 10:42:55,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 10:42:55,094 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:42:55,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:42:55,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1511922726, now seen corresponding path program 1 times [2022-07-21 10:42:55,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:42:55,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185412743] [2022-07-21 10:42:55,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:42:55,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:42:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:55,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 10:42:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:55,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:42:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:55,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:42:55,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:42:55,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185412743] [2022-07-21 10:42:55,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185412743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:42:55,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:42:55,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:42:55,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540070334] [2022-07-21 10:42:55,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:42:55,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:42:55,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:42:55,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:42:55,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:42:55,382 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) [2022-07-21 10:42:58,274 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 [] [2022-07-21 10:43:00,330 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:43:06,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:43:06,141 INFO L93 Difference]: Finished difference Result 368767 states and 582440 transitions. [2022-07-21 10:43:06,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:43:06,163 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 [2022-07-21 10:43:06,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:43:07,849 INFO L225 Difference]: With dead ends: 368767 [2022-07-21 10:43:07,849 INFO L226 Difference]: Without dead ends: 246059 [2022-07-21 10:43:08,456 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 [2022-07-21 10:43:08,457 INFO L413 NwaCegarLoop]: 4312 mSDtfsCounter, 3058 mSDsluCounter, 5580 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 823 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3307 SdHoareTripleChecker+Valid, 9892 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 823 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-21 10:43:08,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3307 Valid, 9892 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [823 Valid, 1121 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2022-07-21 10:43:08,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246059 states. [2022-07-21 10:43:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246059 to 245015. [2022-07-21 10:43:15,018 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) [2022-07-21 10:43:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245015 states to 245015 states and 385690 transitions. [2022-07-21 10:43:17,017 INFO L78 Accepts]: Start accepts. Automaton has 245015 states and 385690 transitions. Word has length 34 [2022-07-21 10:43:17,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:43:17,018 INFO L495 AbstractCegarLoop]: Abstraction has 245015 states and 385690 transitions. [2022-07-21 10:43:17,019 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) [2022-07-21 10:43:17,019 INFO L276 IsEmpty]: Start isEmpty. Operand 245015 states and 385690 transitions. [2022-07-21 10:43:17,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-21 10:43:17,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:43:17,023 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] [2022-07-21 10:43:17,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 10:43:17,023 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:43:17,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:43:17,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1384382779, now seen corresponding path program 1 times [2022-07-21 10:43:17,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:43:17,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588779213] [2022-07-21 10:43:17,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:43:17,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:43:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:17,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 10:43:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:17,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:43:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:17,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:43:17,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:43:17,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588779213] [2022-07-21 10:43:17,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588779213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:43:17,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:43:17,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:43:17,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113169414] [2022-07-21 10:43:17,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:43:17,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:43:17,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:43:17,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:43:17,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:43:17,321 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)