./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 eb692b52 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-?-eb692b5 [2022-07-19 23:09:43,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:09:43,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:09:43,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:09:43,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:09:43,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:09:43,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:09:43,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:09:43,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:09:43,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:09:43,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:09:43,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:09:43,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:09:43,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:09:43,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:09:43,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:09:43,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:09:43,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:09:43,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:09:43,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:09:43,793 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:09:43,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:09:43,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:09:43,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:09:43,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:09:43,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:09:43,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:09:43,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:09:43,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:09:43,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:09:43,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:09:43,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:09:43,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:09:43,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:09:43,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:09:43,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:09:43,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:09:43,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:09:43,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:09:43,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:09:43,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:09:43,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:09:43,811 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 23:09:43,841 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:09:43,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:09:43,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:09:43,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:09:43,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:09:43,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:09:43,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:09:43,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:09:43,843 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:09:43,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:09:43,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 23:09:43,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:09:43,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:09:43,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:09:43,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:09:43,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:09:43,844 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:09:43,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:09:43,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:09:43,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:09:43,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:09:43,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:09:43,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:09:43,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:09:43,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:09:43,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 23:09:43,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 23:09:43,845 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:09:43,845 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:09:43,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:09:43,845 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df [2022-07-19 23:09:44,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:09:44,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:09:44,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:09:44,118 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:09:44,119 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:09:44,120 INFO L432 ainManager$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 [2022-07-19 23:09:44,177 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fa24b188/d433292d4a804430a8ce7b790ab88336/FLAG8422af254 [2022-07-19 23:09:44,802 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:09:44,803 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 [2022-07-19 23:09:44,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fa24b188/d433292d4a804430a8ce7b790ab88336/FLAG8422af254 [2022-07-19 23:09:44,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fa24b188/d433292d4a804430a8ce7b790ab88336 [2022-07-19 23:09:44,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:09:44,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:09:44,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:09:44,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:09:44,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:09:44,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:09:44" (1/1) ... [2022-07-19 23:09:44,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d94b6c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:44, skipping insertion in model container [2022-07-19 23:09:44,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:09:44" (1/1) ... [2022-07-19 23:09:44,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:09:45,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:09:45,947 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] [2022-07-19 23:09:46,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:09:46,063 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:09:46,226 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] [2022-07-19 23:09:46,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:09:46,367 INFO L208 MainTranslator]: Completed translation [2022-07-19 23:09:46,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:46 WrapperNode [2022-07-19 23:09:46,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 23:09:46,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 23:09:46,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 23:09:46,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 23:09:46,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:46" (1/1) ... [2022-07-19 23:09:46,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:46" (1/1) ... [2022-07-19 23:09:46,564 INFO L137 Inliner]: procedures = 138, calls = 1364, calls flagged for inlining = 60, calls inlined = 52, statements flattened = 3772 [2022-07-19 23:09:46,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 23:09:46,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 23:09:46,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 23:09:46,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 23:09:46,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:46" (1/1) ... [2022-07-19 23:09:46,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:46" (1/1) ... [2022-07-19 23:09:46,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:46" (1/1) ... [2022-07-19 23:09:46,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:46" (1/1) ... [2022-07-19 23:09:46,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:46" (1/1) ... [2022-07-19 23:09:46,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:46" (1/1) ... [2022-07-19 23:09:46,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:46" (1/1) ... [2022-07-19 23:09:46,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 23:09:46,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 23:09:46,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 23:09:46,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 23:09:46,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:46" (1/1) ... [2022-07-19 23:09:46,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:09:46,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:09:46,781 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) [2022-07-19 23:09:46,799 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 [2022-07-19 23:09:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure get_pwm1_auto_point_pwm [2022-07-19 23:09:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure get_pwm1_auto_point_pwm [2022-07-19 23:09:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 23:09:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure get_fan [2022-07-19 23:09:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fan [2022-07-19 23:09:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-07-19 23:09:46,818 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-07-19 23:09:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-07-19 23:09:46,818 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-07-19 23:09:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_detect [2022-07-19 23:09:46,818 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_detect [2022-07-19 23:09:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 23:09:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 23:09:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 23:09:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-19 23:09:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-19 23:09:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 23:09:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 23:09:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 23:09:46,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 23:09:46,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 23:09:46,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2022-07-19 23:09:46,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2022-07-19 23:09:46,820 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-19 23:09:46,820 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-19 23:09:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_auto_point_temp [2022-07-19 23:09:46,821 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_auto_point_temp [2022-07-19 23:09:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure set_slope_register [2022-07-19 23:09:46,821 INFO L138 BoogieDeclarations]: Found implementation of procedure set_slope_register [2022-07-19 23:09:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_alarm [2022-07-19 23:09:46,821 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_alarm [2022-07-19 23:09:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 23:09:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 23:09:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 23:09:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-07-19 23:09:46,822 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-07-19 23:09:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-07-19 23:09:46,822 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-07-19 23:09:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 23:09:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_update_device [2022-07-19 23:09:46,823 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_update_device [2022-07-19 23:09:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-07-19 23:09:46,823 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-07-19 23:09:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 23:09:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 23:09:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp [2022-07-19 23:09:46,824 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp [2022-07-19 23:09:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp [2022-07-19 23:09:46,824 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp [2022-07-19 23:09:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan [2022-07-19 23:09:46,824 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan [2022-07-19 23:09:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 23:09:46,825 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-07-19 23:09:46,825 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-07-19 23:09:46,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2022-07-19 23:09:46,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2022-07-19 23:09:46,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 23:09:46,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 23:09:46,825 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_auto_point_temp [2022-07-19 23:09:46,826 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_auto_point_temp [2022-07-19 23:09:46,826 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-19 23:09:46,826 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-19 23:09:47,370 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 23:09:47,371 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 23:09:49,922 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 23:09:49,934 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 23:09:49,934 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 23:09:49,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:09:49 BoogieIcfgContainer [2022-07-19 23:09:49,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 23:09:49,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 23:09:49,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 23:09:49,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 23:09:49,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:09:44" (1/3) ... [2022-07-19 23:09:49,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@959c12b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:09:49, skipping insertion in model container [2022-07-19 23:09:49,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:46" (2/3) ... [2022-07-19 23:09:49,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@959c12b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:09:49, skipping insertion in model container [2022-07-19 23:09:49,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:09:49" (3/3) ... [2022-07-19 23:09:49,944 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-07-19 23:09:49,955 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 23:09:49,956 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 23:09:50,011 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 23:09:50,016 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@135b11ae, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@63f92fc7 [2022-07-19 23:09:50,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 23:09:50,024 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) [2022-07-19 23:09:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-19 23:09:50,036 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:09:50,037 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] [2022-07-19 23:09:50,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:09:50,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:09:50,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2093746445, now seen corresponding path program 1 times [2022-07-19 23:09:50,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:09:50,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000444957] [2022-07-19 23:09:50,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:09:50,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:09:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:50,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:09:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:50,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:09:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:09:50,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:09:50,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000444957] [2022-07-19 23:09:50,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000444957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:09:50,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:09:50,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:09:50,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172675357] [2022-07-19 23:09:50,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:09:50,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:09:50,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:09:50,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:09:50,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:09:50,640 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) [2022-07-19 23:09:52,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:09:52,237 INFO L93 Difference]: Finished difference Result 2950 states and 4940 transitions. [2022-07-19 23:09:52,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:09:52,240 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 [2022-07-19 23:09:52,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:09:52,277 INFO L225 Difference]: With dead ends: 2950 [2022-07-19 23:09:52,278 INFO L226 Difference]: Without dead ends: 2010 [2022-07-19 23:09:52,295 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 [2022-07-19 23:09:52,300 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 [2022-07-19 23:09:52,303 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] [2022-07-19 23:09:52,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2022-07-19 23:09:52,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1833. [2022-07-19 23:09:52,481 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) [2022-07-19 23:09:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2782 transitions. [2022-07-19 23:09:52,494 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2782 transitions. Word has length 30 [2022-07-19 23:09:52,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:09:52,499 INFO L495 AbstractCegarLoop]: Abstraction has 1833 states and 2782 transitions. [2022-07-19 23:09:52,499 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) [2022-07-19 23:09:52,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2782 transitions. [2022-07-19 23:09:52,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-19 23:09:52,505 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:09:52,506 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] [2022-07-19 23:09:52,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 23:09:52,506 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:09:52,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:09:52,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1170799053, now seen corresponding path program 1 times [2022-07-19 23:09:52,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:09:52,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990692387] [2022-07-19 23:09:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:09:52,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:09:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:52,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 23:09:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:52,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:09:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:52,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:09:52,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:09:52,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990692387] [2022-07-19 23:09:52,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990692387] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:09:52,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:09:52,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:09:52,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803877985] [2022-07-19 23:09:52,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:09:52,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:09:52,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:09:52,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:09:52,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:09:52,777 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) [2022-07-19 23:09:54,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:09:54,181 INFO L93 Difference]: Finished difference Result 5797 states and 8876 transitions. [2022-07-19 23:09:54,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:09:54,181 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 [2022-07-19 23:09:54,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:09:54,204 INFO L225 Difference]: With dead ends: 5797 [2022-07-19 23:09:54,204 INFO L226 Difference]: Without dead ends: 3967 [2022-07-19 23:09:54,212 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 [2022-07-19 23:09:54,213 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 [2022-07-19 23:09:54,214 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] [2022-07-19 23:09:54,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3967 states. [2022-07-19 23:09:54,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3967 to 3628. [2022-07-19 23:09:54,375 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) [2022-07-19 23:09:54,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 5508 transitions. [2022-07-19 23:09:54,395 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 5508 transitions. Word has length 36 [2022-07-19 23:09:54,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:09:54,395 INFO L495 AbstractCegarLoop]: Abstraction has 3628 states and 5508 transitions. [2022-07-19 23:09:54,396 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) [2022-07-19 23:09:54,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 5508 transitions. [2022-07-19 23:09:54,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-19 23:09:54,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:09:54,399 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] [2022-07-19 23:09:54,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 23:09:54,399 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:09:54,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:09:54,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2057944644, now seen corresponding path program 1 times [2022-07-19 23:09:54,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:09:54,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949336110] [2022-07-19 23:09:54,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:09:54,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:09:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:54,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:09:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:54,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:09:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:54,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:09:54,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:09:54,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949336110] [2022-07-19 23:09:54,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949336110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:09:54,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:09:54,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:09:54,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738372077] [2022-07-19 23:09:54,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:09:54,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:09:54,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:09:54,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:09:54,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:09:54,602 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) [2022-07-19 23:09:55,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:09:55,985 INFO L93 Difference]: Finished difference Result 11502 states and 17614 transitions. [2022-07-19 23:09:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:09:55,986 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 [2022-07-19 23:09:55,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:09:56,024 INFO L225 Difference]: With dead ends: 11502 [2022-07-19 23:09:56,024 INFO L226 Difference]: Without dead ends: 7877 [2022-07-19 23:09:56,037 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 [2022-07-19 23:09:56,038 INFO L413 NwaCegarLoop]: 1730 mSDtfsCounter, 1523 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:09:56,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 4204 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 23:09:56,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7877 states. [2022-07-19 23:09:56,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7877 to 7214. [2022-07-19 23:09:56,258 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) [2022-07-19 23:09:56,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7214 states to 7214 states and 10952 transitions. [2022-07-19 23:09:56,289 INFO L78 Accepts]: Start accepts. Automaton has 7214 states and 10952 transitions. Word has length 34 [2022-07-19 23:09:56,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:09:56,289 INFO L495 AbstractCegarLoop]: Abstraction has 7214 states and 10952 transitions. [2022-07-19 23:09:56,290 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) [2022-07-19 23:09:56,290 INFO L276 IsEmpty]: Start isEmpty. Operand 7214 states and 10952 transitions. [2022-07-19 23:09:56,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-19 23:09:56,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:09:56,291 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] [2022-07-19 23:09:56,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 23:09:56,292 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:09:56,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:09:56,293 INFO L85 PathProgramCache]: Analyzing trace with hash -880553717, now seen corresponding path program 1 times [2022-07-19 23:09:56,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:09:56,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794681951] [2022-07-19 23:09:56,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:09:56,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:09:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:56,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 23:09:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:56,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:09:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:56,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:09:56,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:09:56,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794681951] [2022-07-19 23:09:56,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794681951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:09:56,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:09:56,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:09:56,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925100519] [2022-07-19 23:09:56,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:09:56,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:09:56,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:09:56,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:09:56,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:09:56,509 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) [2022-07-19 23:09:58,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:09:58,045 INFO L93 Difference]: Finished difference Result 22852 states and 34986 transitions. [2022-07-19 23:09:58,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:09:58,045 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 [2022-07-19 23:09:58,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:09:58,143 INFO L225 Difference]: With dead ends: 22852 [2022-07-19 23:09:58,143 INFO L226 Difference]: Without dead ends: 15641 [2022-07-19 23:09:58,180 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 [2022-07-19 23:09:58,187 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 [2022-07-19 23:09:58,188 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] [2022-07-19 23:09:58,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15641 states. [2022-07-19 23:09:58,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15641 to 14330. [2022-07-19 23:09:58,707 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) [2022-07-19 23:09:58,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14330 states to 14330 states and 21740 transitions. [2022-07-19 23:09:58,874 INFO L78 Accepts]: Start accepts. Automaton has 14330 states and 21740 transitions. Word has length 36 [2022-07-19 23:09:58,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:09:58,874 INFO L495 AbstractCegarLoop]: Abstraction has 14330 states and 21740 transitions. [2022-07-19 23:09:58,875 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) [2022-07-19 23:09:58,875 INFO L276 IsEmpty]: Start isEmpty. Operand 14330 states and 21740 transitions. [2022-07-19 23:09:58,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-19 23:09:58,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:09:58,876 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] [2022-07-19 23:09:58,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 23:09:58,877 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:09:58,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:09:58,881 INFO L85 PathProgramCache]: Analyzing trace with hash 978092325, now seen corresponding path program 1 times [2022-07-19 23:09:58,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:09:58,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404401230] [2022-07-19 23:09:58,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:09:58,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:09:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:59,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:09:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:59,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:09:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:59,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:09:59,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:09:59,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404401230] [2022-07-19 23:09:59,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404401230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:09:59,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:09:59,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:09:59,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828943172] [2022-07-19 23:09:59,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:09:59,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:09:59,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:09:59,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:09:59,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:09:59,064 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) [2022-07-19 23:10:00,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:10:00,781 INFO L93 Difference]: Finished difference Result 45448 states and 69534 transitions. [2022-07-19 23:10:00,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:10:00,782 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 [2022-07-19 23:10:00,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:10:00,913 INFO L225 Difference]: With dead ends: 45448 [2022-07-19 23:10:00,913 INFO L226 Difference]: Without dead ends: 31121 [2022-07-19 23:10:01,059 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 [2022-07-19 23:10:01,066 INFO L413 NwaCegarLoop]: 1838 mSDtfsCounter, 1523 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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 [2022-07-19 23:10:01,066 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] [2022-07-19 23:10:01,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31121 states. [2022-07-19 23:10:01,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31121 to 28514. [2022-07-19 23:10:01,966 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) [2022-07-19 23:10:02,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28514 states to 28514 states and 43236 transitions. [2022-07-19 23:10:02,084 INFO L78 Accepts]: Start accepts. Automaton has 28514 states and 43236 transitions. Word has length 29 [2022-07-19 23:10:02,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:10:02,084 INFO L495 AbstractCegarLoop]: Abstraction has 28514 states and 43236 transitions. [2022-07-19 23:10:02,084 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) [2022-07-19 23:10:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand 28514 states and 43236 transitions. [2022-07-19 23:10:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-19 23:10:02,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:10:02,086 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] [2022-07-19 23:10:02,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 23:10:02,086 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:10:02,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:10:02,087 INFO L85 PathProgramCache]: Analyzing trace with hash -758457314, now seen corresponding path program 1 times [2022-07-19 23:10:02,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:10:02,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976978169] [2022-07-19 23:10:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:10:02,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:10:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:02,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 23:10:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:02,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:10:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:02,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:10:02,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:10:02,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976978169] [2022-07-19 23:10:02,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976978169] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:10:02,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:10:02,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:10:02,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068035204] [2022-07-19 23:10:02,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:10:02,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:10:02,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:10:02,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:10:02,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:10:02,293 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) [2022-07-19 23:10:04,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:10:04,747 INFO L93 Difference]: Finished difference Result 90528 states and 138438 transitions. [2022-07-19 23:10:04,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:10:04,748 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 [2022-07-19 23:10:04,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:10:05,170 INFO L225 Difference]: With dead ends: 90528 [2022-07-19 23:10:05,171 INFO L226 Difference]: Without dead ends: 62017 [2022-07-19 23:10:05,269 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 [2022-07-19 23:10:05,270 INFO L413 NwaCegarLoop]: 1852 mSDtfsCounter, 1524 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:10:05,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1641 Valid, 4436 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 23:10:05,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62017 states. [2022-07-19 23:10:07,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62017 to 56818. [2022-07-19 23:10:07,214 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) [2022-07-19 23:10:07,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56818 states to 56818 states and 86100 transitions. [2022-07-19 23:10:07,697 INFO L78 Accepts]: Start accepts. Automaton has 56818 states and 86100 transitions. Word has length 33 [2022-07-19 23:10:07,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:10:07,699 INFO L495 AbstractCegarLoop]: Abstraction has 56818 states and 86100 transitions. [2022-07-19 23:10:07,699 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) [2022-07-19 23:10:07,700 INFO L276 IsEmpty]: Start isEmpty. Operand 56818 states and 86100 transitions. [2022-07-19 23:10:07,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-19 23:10:07,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:10:07,701 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] [2022-07-19 23:10:07,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 23:10:07,701 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:10:07,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:10:07,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1936448029, now seen corresponding path program 1 times [2022-07-19 23:10:07,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:10:07,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654225802] [2022-07-19 23:10:07,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:10:07,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:10:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:07,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:10:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:07,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:10:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:10:07,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:10:07,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654225802] [2022-07-19 23:10:07,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654225802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:10:07,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:10:07,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:10:07,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047917685] [2022-07-19 23:10:07,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:10:07,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:10:07,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:10:07,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:10:07,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:10:07,853 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) [2022-07-19 23:10:11,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:10:11,417 INFO L93 Difference]: Finished difference Result 180432 states and 275702 transitions. [2022-07-19 23:10:11,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:10:11,417 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 [2022-07-19 23:10:11,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:10:12,202 INFO L225 Difference]: With dead ends: 180432 [2022-07-19 23:10:12,203 INFO L226 Difference]: Without dead ends: 123617 [2022-07-19 23:10:12,446 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 [2022-07-19 23:10:12,447 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 [2022-07-19 23:10:12,448 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] [2022-07-19 23:10:12,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123617 states. [2022-07-19 23:10:15,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123617 to 113234. [2022-07-19 23:10:15,655 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) [2022-07-19 23:10:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113234 states to 113234 states and 171476 transitions. [2022-07-19 23:10:16,559 INFO L78 Accepts]: Start accepts. Automaton has 113234 states and 171476 transitions. Word has length 30 [2022-07-19 23:10:16,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:10:16,560 INFO L495 AbstractCegarLoop]: Abstraction has 113234 states and 171476 transitions. [2022-07-19 23:10:16,561 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) [2022-07-19 23:10:16,561 INFO L276 IsEmpty]: Start isEmpty. Operand 113234 states and 171476 transitions. [2022-07-19 23:10:16,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-19 23:10:16,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:10:16,562 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] [2022-07-19 23:10:16,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 23:10:16,563 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:10:16,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:10:16,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1266288340, now seen corresponding path program 1 times [2022-07-19 23:10:16,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:10:16,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263966901] [2022-07-19 23:10:16,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:10:16,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:10:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:16,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 23:10:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:16,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:10:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:10:16,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:10:16,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263966901] [2022-07-19 23:10:16,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263966901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:10:16,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:10:16,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:10:16,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749784603] [2022-07-19 23:10:16,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:10:16,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:10:16,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:10:16,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:10:16,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:10:16,728 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) [2022-07-19 23:10:22,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:10:22,392 INFO L93 Difference]: Finished difference Result 359152 states and 548214 transitions. [2022-07-19 23:10:22,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:10:22,393 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 [2022-07-19 23:10:22,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:10:23,952 INFO L225 Difference]: With dead ends: 359152 [2022-07-19 23:10:23,952 INFO L226 Difference]: Without dead ends: 245921 [2022-07-19 23:10:24,249 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 [2022-07-19 23:10:24,250 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 [2022-07-19 23:10:24,250 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] [2022-07-19 23:10:24,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245921 states. [2022-07-19 23:10:30,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245921 to 225170. [2022-07-19 23:10:30,251 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) [2022-07-19 23:10:31,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225170 states to 225170 states and 340628 transitions. [2022-07-19 23:10:31,636 INFO L78 Accepts]: Start accepts. Automaton has 225170 states and 340628 transitions. Word has length 40 [2022-07-19 23:10:31,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:10:31,636 INFO L495 AbstractCegarLoop]: Abstraction has 225170 states and 340628 transitions. [2022-07-19 23:10:31,637 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) [2022-07-19 23:10:31,637 INFO L276 IsEmpty]: Start isEmpty. Operand 225170 states and 340628 transitions. [2022-07-19 23:10:31,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-19 23:10:31,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:10:31,638 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] [2022-07-19 23:10:31,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 23:10:31,639 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:10:31,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:10:31,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1345085814, now seen corresponding path program 1 times [2022-07-19 23:10:31,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:10:31,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285528332] [2022-07-19 23:10:31,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:10:31,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:10:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:31,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:10:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:31,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:10:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:31,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:10:31,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:10:31,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285528332] [2022-07-19 23:10:31,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285528332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:10:31,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:10:31,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:10:31,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590740686] [2022-07-19 23:10:31,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:10:31,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:10:31,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:10:31,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:10:31,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:10:31,796 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) [2022-07-19 23:10:42,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:10:42,636 INFO L93 Difference]: Finished difference Result 714416 states and 1089206 transitions. [2022-07-19 23:10:42,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:10:42,637 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 39 [2022-07-19 23:10:42,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted.