./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--amc6821.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.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 b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 12:06:54,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:06:54,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:06:54,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:06:54,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:06:54,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:06:54,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:06:54,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:06:54,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:06:54,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:06:54,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:06:54,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:06:54,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:06:54,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:06:54,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:06:54,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:06:54,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:06:54,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:06:54,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:06:54,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:06:54,784 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:06:54,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:06:54,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:06:54,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:06:54,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:06:54,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:06:54,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:06:54,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:06:54,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:06:54,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:06:54,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:06:54,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:06:54,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:06:54,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:06:54,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:06:54,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:06:54,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:06:54,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:06:54,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:06:54,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:06:54,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:06:54,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:06:54,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 12:06:54,830 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:06:54,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:06:54,831 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:06:54,831 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:06:54,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:06:54,832 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:06:54,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:06:54,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:06:54,833 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:06:54,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:06:54,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 12:06:54,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:06:54,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:06:54,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:06:54,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:06:54,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:06:54,835 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:06:54,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:06:54,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:06:54,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:06:54,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:06:54,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:06:54,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:06:54,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:06:54,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:06:54,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 12:06:54,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 12:06:54,837 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:06:54,837 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:06:54,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:06:54,838 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df [2022-07-12 12:06:55,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:06:55,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:06:55,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:06:55,098 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:06:55,098 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:06:55,099 INFO L432 ainManager$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--amc6821.ko-main.cil.out.i [2022-07-12 12:06:55,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f929fea00/ee3ff5c3174f445d85117f282afa42ca/FLAGef313751b [2022-07-12 12:06:55,796 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:06:55,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-07-12 12:06:55,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f929fea00/ee3ff5c3174f445d85117f282afa42ca/FLAGef313751b [2022-07-12 12:06:55,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f929fea00/ee3ff5c3174f445d85117f282afa42ca [2022-07-12 12:06:55,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:06:55,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:06:55,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:06:55,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:06:55,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:06:55,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:06:55" (1/1) ... [2022-07-12 12:06:55,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@446b0a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:55, skipping insertion in model container [2022-07-12 12:06:55,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:06:55" (1/1) ... [2022-07-12 12:06:55,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:06:56,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:06:56,915 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--amc6821.ko-main.cil.out.i[139464,139477] [2022-07-12 12:06:56,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:06:57,052 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:06:57,289 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--amc6821.ko-main.cil.out.i[139464,139477] [2022-07-12 12:06:57,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:06:57,412 INFO L208 MainTranslator]: Completed translation [2022-07-12 12:06:57,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:57 WrapperNode [2022-07-12 12:06:57,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 12:06:57,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 12:06:57,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 12:06:57,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 12:06:57,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:57" (1/1) ... [2022-07-12 12:06:57,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:57" (1/1) ... [2022-07-12 12:06:57,637 INFO L137 Inliner]: procedures = 138, calls = 1364, calls flagged for inlining = 60, calls inlined = 52, statements flattened = 3772 [2022-07-12 12:06:57,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 12:06:57,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 12:06:57,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 12:06:57,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 12:06:57,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:57" (1/1) ... [2022-07-12 12:06:57,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:57" (1/1) ... [2022-07-12 12:06:57,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:57" (1/1) ... [2022-07-12 12:06:57,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:57" (1/1) ... [2022-07-12 12:06:57,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:57" (1/1) ... [2022-07-12 12:06:57,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:57" (1/1) ... [2022-07-12 12:06:57,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:57" (1/1) ... [2022-07-12 12:06:57,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 12:06:57,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 12:06:57,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 12:06:57,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 12:06:57,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:57" (1/1) ... [2022-07-12 12:06:57,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:06:57,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:06:57,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 12:06:57,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 12:06:57,900 INFO L130 BoogieDeclarations]: Found specification of procedure get_pwm1_auto_point_pwm [2022-07-12 12:06:57,901 INFO L138 BoogieDeclarations]: Found implementation of procedure get_pwm1_auto_point_pwm [2022-07-12 12:06:57,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 12:06:57,901 INFO L130 BoogieDeclarations]: Found specification of procedure get_fan [2022-07-12 12:06:57,901 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fan [2022-07-12 12:06:57,901 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-07-12 12:06:57,902 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-07-12 12:06:57,902 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-07-12 12:06:57,902 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-07-12 12:06:57,902 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_detect [2022-07-12 12:06:57,902 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_detect [2022-07-12 12:06:57,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 12:06:57,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 12:06:57,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 12:06:57,903 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-12 12:06:57,903 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-12 12:06:57,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 12:06:57,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 12:06:57,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 12:06:57,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 12:06:57,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 12:06:57,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2022-07-12 12:06:57,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2022-07-12 12:06:57,904 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-12 12:06:57,904 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-12 12:06:57,905 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_auto_point_temp [2022-07-12 12:06:57,905 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_auto_point_temp [2022-07-12 12:06:57,905 INFO L130 BoogieDeclarations]: Found specification of procedure set_slope_register [2022-07-12 12:06:57,905 INFO L138 BoogieDeclarations]: Found implementation of procedure set_slope_register [2022-07-12 12:06:57,905 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_alarm [2022-07-12 12:06:57,905 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_alarm [2022-07-12 12:06:57,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 12:06:57,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 12:06:57,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 12:06:57,906 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-07-12 12:06:57,906 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-07-12 12:06:57,907 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-07-12 12:06:57,907 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-07-12 12:06:57,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 12:06:57,907 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_update_device [2022-07-12 12:06:57,907 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_update_device [2022-07-12 12:06:57,907 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-07-12 12:06:57,908 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-07-12 12:06:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 12:06:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 12:06:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp [2022-07-12 12:06:57,908 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp [2022-07-12 12:06:57,909 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp [2022-07-12 12:06:57,909 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp [2022-07-12 12:06:57,909 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan [2022-07-12 12:06:57,909 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan [2022-07-12 12:06:57,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 12:06:57,909 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-07-12 12:06:57,910 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-07-12 12:06:57,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2022-07-12 12:06:57,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2022-07-12 12:06:57,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 12:06:57,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 12:06:57,912 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_auto_point_temp [2022-07-12 12:06:57,912 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_auto_point_temp [2022-07-12 12:06:57,912 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-12 12:06:57,912 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-12 12:06:58,486 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 12:06:58,489 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 12:07:01,160 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 12:07:01,176 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 12:07:01,177 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 12:07:01,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:07:01 BoogieIcfgContainer [2022-07-12 12:07:01,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 12:07:01,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 12:07:01,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 12:07:01,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 12:07:01,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:06:55" (1/3) ... [2022-07-12 12:07:01,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3843ebf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:07:01, skipping insertion in model container [2022-07-12 12:07:01,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:57" (2/3) ... [2022-07-12 12:07:01,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3843ebf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:07:01, skipping insertion in model container [2022-07-12 12:07:01,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:07:01" (3/3) ... [2022-07-12 12:07:01,188 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-07-12 12:07:01,200 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 12:07:01,201 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 12:07:01,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 12:07:01,272 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@457fab5b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e04e1ff [2022-07-12 12:07:01,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 12:07:01,281 INFO L276 IsEmpty]: Start isEmpty. Operand has 935 states, 738 states have (on average 1.570460704607046) internal successors, (1159), 745 states have internal predecessors, (1159), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2022-07-12 12:07:01,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-12 12:07:01,298 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:01,299 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] [2022-07-12 12:07:01,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:01,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:01,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2093746445, now seen corresponding path program 1 times [2022-07-12 12:07:01,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:01,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332451283] [2022-07-12 12:07:01,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:01,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:01,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 12:07:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:01,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:07:01,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:01,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332451283] [2022-07-12 12:07:01,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332451283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:01,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:01,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:01,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892025763] [2022-07-12 12:07:01,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:01,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:01,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:01,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:01,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:01,964 INFO L87 Difference]: Start difference. First operand has 935 states, 738 states have (on average 1.570460704607046) internal successors, (1159), 745 states have internal predecessors, (1159), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 12:07:03,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:03,612 INFO L93 Difference]: Finished difference Result 2950 states and 4940 transitions. [2022-07-12 12:07:03,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:07:03,617 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-07-12 12:07:03,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:03,642 INFO L225 Difference]: With dead ends: 2950 [2022-07-12 12:07:03,642 INFO L226 Difference]: Without dead ends: 2010 [2022-07-12 12:07:03,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:07:03,676 INFO L413 NwaCegarLoop]: 1707 mSDtfsCounter, 1528 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 4165 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:03,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1645 Valid, 4165 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 12:07:03,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2022-07-12 12:07:03,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1833. [2022-07-12 12:07:03,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1451 states have (on average 1.4624396967608546) internal successors, (2122), 1456 states have internal predecessors, (2122), 333 states have call successors, (333), 49 states have call predecessors, (333), 48 states have return successors, (327), 327 states have call predecessors, (327), 327 states have call successors, (327) [2022-07-12 12:07:03,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2782 transitions. [2022-07-12 12:07:03,909 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2782 transitions. Word has length 30 [2022-07-12 12:07:03,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:03,909 INFO L495 AbstractCegarLoop]: Abstraction has 1833 states and 2782 transitions. [2022-07-12 12:07:03,909 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 12:07:03,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2782 transitions. [2022-07-12 12:07:03,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-12 12:07:03,913 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:03,913 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] [2022-07-12 12:07:03,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 12:07:03,914 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:03,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:03,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1170799053, now seen corresponding path program 1 times [2022-07-12 12:07:03,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:03,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18191398] [2022-07-12 12:07:03,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:03,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:04,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 12:07:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:04,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:04,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:07:04,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:04,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18191398] [2022-07-12 12:07:04,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18191398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:04,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:04,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:04,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134677157] [2022-07-12 12:07:04,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:04,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:04,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:04,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:04,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:04,180 INFO L87 Difference]: Start difference. First operand 1833 states and 2782 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 12:07:05,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:05,596 INFO L93 Difference]: Finished difference Result 5797 states and 8876 transitions. [2022-07-12 12:07:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:07:05,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 36 [2022-07-12 12:07:05,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:05,625 INFO L225 Difference]: With dead ends: 5797 [2022-07-12 12:07:05,625 INFO L226 Difference]: Without dead ends: 3967 [2022-07-12 12:07:05,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:07:05,640 INFO L413 NwaCegarLoop]: 1714 mSDtfsCounter, 1515 mSDsluCounter, 2456 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1632 SdHoareTripleChecker+Valid, 4170 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:05,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1632 Valid, 4170 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 12:07:05,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3967 states. [2022-07-12 12:07:05,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3967 to 3628. [2022-07-12 12:07:05,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 2875 states have (on average 1.4615652173913043) internal successors, (4202), 2880 states have internal predecessors, (4202), 656 states have call successors, (656), 97 states have call predecessors, (656), 96 states have return successors, (650), 650 states have call predecessors, (650), 650 states have call successors, (650) [2022-07-12 12:07:05,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 5508 transitions. [2022-07-12 12:07:05,822 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 5508 transitions. Word has length 36 [2022-07-12 12:07:05,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:05,822 INFO L495 AbstractCegarLoop]: Abstraction has 3628 states and 5508 transitions. [2022-07-12 12:07:05,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 12:07:05,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 5508 transitions. [2022-07-12 12:07:05,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-12 12:07:05,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:05,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:07:05,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 12:07:05,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:05,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:05,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2057944644, now seen corresponding path program 1 times [2022-07-12 12:07:05,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:05,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941307242] [2022-07-12 12:07:05,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:05,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:05,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:07:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:05,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:05,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:07:05,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:05,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941307242] [2022-07-12 12:07:05,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941307242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:05,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:05,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:05,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702646154] [2022-07-12 12:07:05,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:05,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:05,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:05,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:05,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:05,995 INFO L87 Difference]: Start difference. First operand 3628 states and 5508 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 12:07:07,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:07,375 INFO L93 Difference]: Finished difference Result 11502 states and 17614 transitions. [2022-07-12 12:07:07,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:07:07,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-07-12 12:07:07,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:07,422 INFO L225 Difference]: With dead ends: 11502 [2022-07-12 12:07:07,422 INFO L226 Difference]: Without dead ends: 7877 [2022-07-12 12:07:07,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:07:07,444 INFO L413 NwaCegarLoop]: 1730 mSDtfsCounter, 1523 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 4204 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:07,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 4204 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 12:07:07,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7877 states. [2022-07-12 12:07:07,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7877 to 7214. [2022-07-12 12:07:07,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7214 states, 5719 states have (on average 1.4607448854694878) internal successors, (8354), 5724 states have internal predecessors, (8354), 1302 states have call successors, (1302), 193 states have call predecessors, (1302), 192 states have return successors, (1296), 1296 states have call predecessors, (1296), 1296 states have call successors, (1296) [2022-07-12 12:07:07,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7214 states to 7214 states and 10952 transitions. [2022-07-12 12:07:07,760 INFO L78 Accepts]: Start accepts. Automaton has 7214 states and 10952 transitions. Word has length 34 [2022-07-12 12:07:07,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:07,760 INFO L495 AbstractCegarLoop]: Abstraction has 7214 states and 10952 transitions. [2022-07-12 12:07:07,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 12:07:07,761 INFO L276 IsEmpty]: Start isEmpty. Operand 7214 states and 10952 transitions. [2022-07-12 12:07:07,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-12 12:07:07,765 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:07,765 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] [2022-07-12 12:07:07,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 12:07:07,766 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:07,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:07,766 INFO L85 PathProgramCache]: Analyzing trace with hash -880553717, now seen corresponding path program 1 times [2022-07-12 12:07:07,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:07,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586791199] [2022-07-12 12:07:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:07,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:07,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 12:07:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:07,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:07,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:07:07,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:07,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586791199] [2022-07-12 12:07:07,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586791199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:07,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:07,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:07,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146496175] [2022-07-12 12:07:07,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:07,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:07,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:07,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:07,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:07,998 INFO L87 Difference]: Start difference. First operand 7214 states and 10952 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 12:07:09,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:09,626 INFO L93 Difference]: Finished difference Result 22852 states and 34986 transitions. [2022-07-12 12:07:09,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:07:09,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 36 [2022-07-12 12:07:09,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:09,727 INFO L225 Difference]: With dead ends: 22852 [2022-07-12 12:07:09,728 INFO L226 Difference]: Without dead ends: 15641 [2022-07-12 12:07:09,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:07:09,770 INFO L413 NwaCegarLoop]: 1740 mSDtfsCounter, 1514 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 4219 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:09,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 4219 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 12:07:09,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15641 states. [2022-07-12 12:07:10,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15641 to 14330. [2022-07-12 12:07:10,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14330 states, 11363 states have (on average 1.4592977206723576) internal successors, (16582), 11368 states have internal predecessors, (16582), 2582 states have call successors, (2582), 385 states have call predecessors, (2582), 384 states have return successors, (2576), 2576 states have call predecessors, (2576), 2576 states have call successors, (2576) [2022-07-12 12:07:10,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14330 states to 14330 states and 21740 transitions. [2022-07-12 12:07:10,411 INFO L78 Accepts]: Start accepts. Automaton has 14330 states and 21740 transitions. Word has length 36 [2022-07-12 12:07:10,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:10,412 INFO L495 AbstractCegarLoop]: Abstraction has 14330 states and 21740 transitions. [2022-07-12 12:07:10,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 12:07:10,412 INFO L276 IsEmpty]: Start isEmpty. Operand 14330 states and 21740 transitions. [2022-07-12 12:07:10,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-12 12:07:10,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:10,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:07:10,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 12:07:10,414 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:10,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:10,415 INFO L85 PathProgramCache]: Analyzing trace with hash 978092325, now seen corresponding path program 1 times [2022-07-12 12:07:10,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:10,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853859460] [2022-07-12 12:07:10,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:10,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:10,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:07:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:10,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:07:10,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:10,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853859460] [2022-07-12 12:07:10,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853859460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:10,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:10,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:10,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846992971] [2022-07-12 12:07:10,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:10,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:10,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:10,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:10,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:10,745 INFO L87 Difference]: Start difference. First operand 14330 states and 21740 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 12:07:12,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:12,527 INFO L93 Difference]: Finished difference Result 45448 states and 69534 transitions. [2022-07-12 12:07:12,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:07:12,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-07-12 12:07:12,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:12,678 INFO L225 Difference]: With dead ends: 45448 [2022-07-12 12:07:12,678 INFO L226 Difference]: Without dead ends: 31121 [2022-07-12 12:07:12,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:07:12,727 INFO L413 NwaCegarLoop]: 1838 mSDtfsCounter, 1523 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 4410 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:12,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 4410 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 12:07:12,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31121 states. [2022-07-12 12:07:13,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31121 to 28514. [2022-07-12 12:07:13,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28514 states, 22603 states have (on average 1.4581250276511968) internal successors, (32958), 22608 states have internal predecessors, (32958), 5142 states have call successors, (5142), 769 states have call predecessors, (5142), 768 states have return successors, (5136), 5136 states have call predecessors, (5136), 5136 states have call successors, (5136) [2022-07-12 12:07:13,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28514 states to 28514 states and 43236 transitions. [2022-07-12 12:07:13,960 INFO L78 Accepts]: Start accepts. Automaton has 28514 states and 43236 transitions. Word has length 29 [2022-07-12 12:07:13,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:13,960 INFO L495 AbstractCegarLoop]: Abstraction has 28514 states and 43236 transitions. [2022-07-12 12:07:13,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 12:07:13,973 INFO L276 IsEmpty]: Start isEmpty. Operand 28514 states and 43236 transitions. [2022-07-12 12:07:13,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 12:07:13,975 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:13,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:07:13,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 12:07:13,975 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:13,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:13,976 INFO L85 PathProgramCache]: Analyzing trace with hash -758457314, now seen corresponding path program 1 times [2022-07-12 12:07:13,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:13,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841920234] [2022-07-12 12:07:13,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:13,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:14,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 12:07:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:14,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:14,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:07:14,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:14,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841920234] [2022-07-12 12:07:14,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841920234] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:14,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:14,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:14,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656304620] [2022-07-12 12:07:14,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:14,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:14,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:14,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:14,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:14,189 INFO L87 Difference]: Start difference. First operand 28514 states and 43236 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 12:07:16,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:16,368 INFO L93 Difference]: Finished difference Result 90528 states and 138438 transitions. [2022-07-12 12:07:16,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:07:16,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-07-12 12:07:16,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:16,848 INFO L225 Difference]: With dead ends: 90528 [2022-07-12 12:07:16,849 INFO L226 Difference]: Without dead ends: 62017 [2022-07-12 12:07:16,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:07:16,952 INFO L413 NwaCegarLoop]: 1852 mSDtfsCounter, 1524 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 4436 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:16,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1641 Valid, 4436 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 12:07:17,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62017 states. [2022-07-12 12:07:18,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62017 to 56818. [2022-07-12 12:07:19,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56818 states, 45035 states have (on average 1.45695570112135) internal successors, (65614), 45040 states have internal predecessors, (65614), 10246 states have call successors, (10246), 1537 states have call predecessors, (10246), 1536 states have return successors, (10240), 10240 states have call predecessors, (10240), 10240 states have call successors, (10240) [2022-07-12 12:07:19,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56818 states to 56818 states and 86100 transitions. [2022-07-12 12:07:19,490 INFO L78 Accepts]: Start accepts. Automaton has 56818 states and 86100 transitions. Word has length 33 [2022-07-12 12:07:19,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:19,492 INFO L495 AbstractCegarLoop]: Abstraction has 56818 states and 86100 transitions. [2022-07-12 12:07:19,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 12:07:19,493 INFO L276 IsEmpty]: Start isEmpty. Operand 56818 states and 86100 transitions. [2022-07-12 12:07:19,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-12 12:07:19,494 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:19,495 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] [2022-07-12 12:07:19,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 12:07:19,497 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:19,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:19,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1936448029, now seen corresponding path program 1 times [2022-07-12 12:07:19,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:19,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625668293] [2022-07-12 12:07:19,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:19,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:19,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 12:07:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:19,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:19,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:07:19,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:19,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625668293] [2022-07-12 12:07:19,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625668293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:19,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:19,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:19,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047821808] [2022-07-12 12:07:19,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:19,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:19,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:19,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:19,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:19,667 INFO L87 Difference]: Start difference. First operand 56818 states and 86100 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 12:07:23,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:23,252 INFO L93 Difference]: Finished difference Result 180432 states and 275702 transitions. [2022-07-12 12:07:23,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:07:23,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 30 [2022-07-12 12:07:23,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:24,109 INFO L225 Difference]: With dead ends: 180432 [2022-07-12 12:07:24,110 INFO L226 Difference]: Without dead ends: 123617 [2022-07-12 12:07:24,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:07:24,257 INFO L413 NwaCegarLoop]: 1861 mSDtfsCounter, 1527 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 4454 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:24,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1644 Valid, 4454 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 12:07:24,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123617 states. [2022-07-12 12:07:27,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123617 to 113234. [2022-07-12 12:07:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113234 states, 89739 states have (on average 1.4557550228997427) internal successors, (130638), 89744 states have internal predecessors, (130638), 20422 states have call successors, (20422), 3073 states have call predecessors, (20422), 3072 states have return successors, (20416), 20416 states have call predecessors, (20416), 20416 states have call successors, (20416) [2022-07-12 12:07:28,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113234 states to 113234 states and 171476 transitions. [2022-07-12 12:07:28,495 INFO L78 Accepts]: Start accepts. Automaton has 113234 states and 171476 transitions. Word has length 30 [2022-07-12 12:07:28,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:28,495 INFO L495 AbstractCegarLoop]: Abstraction has 113234 states and 171476 transitions. [2022-07-12 12:07:28,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 12:07:28,496 INFO L276 IsEmpty]: Start isEmpty. Operand 113234 states and 171476 transitions. [2022-07-12 12:07:28,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-12 12:07:28,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:28,497 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] [2022-07-12 12:07:28,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 12:07:28,498 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:28,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:28,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1266288340, now seen corresponding path program 1 times [2022-07-12 12:07:28,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:28,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813205270] [2022-07-12 12:07:28,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:28,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:28,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:07:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:28,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:07:28,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:28,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813205270] [2022-07-12 12:07:28,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813205270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:28,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:28,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:28,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238582435] [2022-07-12 12:07:28,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:28,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:28,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:28,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:28,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:28,672 INFO L87 Difference]: Start difference. First operand 113234 states and 171476 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 12:07:34,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:34,567 INFO L93 Difference]: Finished difference Result 359152 states and 548214 transitions. [2022-07-12 12:07:34,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:07:34,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 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 40 [2022-07-12 12:07:34,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:35,811 INFO L225 Difference]: With dead ends: 359152 [2022-07-12 12:07:35,811 INFO L226 Difference]: Without dead ends: 245921 [2022-07-12 12:07:36,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:07:36,455 INFO L413 NwaCegarLoop]: 1870 mSDtfsCounter, 1511 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 4468 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:36,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1628 Valid, 4468 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 12:07:36,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245921 states. [2022-07-12 12:07:42,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245921 to 225170. [2022-07-12 12:07:42,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225170 states, 178443 states have (on average 1.4540777727341505) internal successors, (259470), 178448 states have internal predecessors, (259470), 40582 states have call successors, (40582), 6145 states have call predecessors, (40582), 6144 states have return successors, (40576), 40576 states have call predecessors, (40576), 40576 states have call successors, (40576) [2022-07-12 12:07:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225170 states to 225170 states and 340628 transitions. [2022-07-12 12:07:44,028 INFO L78 Accepts]: Start accepts. Automaton has 225170 states and 340628 transitions. Word has length 40 [2022-07-12 12:07:44,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:44,029 INFO L495 AbstractCegarLoop]: Abstraction has 225170 states and 340628 transitions. [2022-07-12 12:07:44,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 12:07:44,030 INFO L276 IsEmpty]: Start isEmpty. Operand 225170 states and 340628 transitions. [2022-07-12 12:07:44,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-12 12:07:44,031 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:44,031 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] [2022-07-12 12:07:44,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 12:07:44,032 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:44,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:44,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1345085814, now seen corresponding path program 1 times [2022-07-12 12:07:44,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:44,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062462569] [2022-07-12 12:07:44,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:44,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:44,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 12:07:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:44,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:07:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:44,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:07:44,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:44,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062462569] [2022-07-12 12:07:44,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062462569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:44,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:44,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:44,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924079759] [2022-07-12 12:07:44,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:44,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:44,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:44,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:44,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:44,200 INFO L87 Difference]: Start difference. First operand 225170 states and 340628 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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)