./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:30:26,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:30:26,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:30:26,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:30:26,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:30:26,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:30:26,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:30:26,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:30:26,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:30:26,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:30:26,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:30:26,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:30:26,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:30:26,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:30:26,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:30:26,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:30:26,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:30:26,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:30:26,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:30:26,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:30:26,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:30:26,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:30:26,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:30:26,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:30:26,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:30:26,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:30:26,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:30:26,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:30:26,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:30:26,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:30:26,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:30:26,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:30:26,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:30:26,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:30:26,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:30:26,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:30:26,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:30:26,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:30:26,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:30:26,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:30:26,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:30:26,978 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:30:26,997 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:30:26,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:30:26,998 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:30:26,998 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:30:26,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:30:26,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:30:27,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:30:27,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:30:27,000 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:30:27,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:30:27,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:30:27,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:30:27,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:30:27,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:30:27,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:30:27,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:30:27,007 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:30:27,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:30:27,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:30:27,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:30:27,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:30:27,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:30:27,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:30:27,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:30:27,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:30:27,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:30:27,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:30:27,009 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:30:27,009 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:30:27,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:30:27,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:30:27,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 [2021-12-22 14:30:27,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:30:27,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:30:27,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:30:27,281 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:30:27,282 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:30:27,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2021-12-22 14:30:27,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/571b02144/faf5f13f82444903823acf4ced1f31c9/FLAG91bca0ea7 [2021-12-22 14:30:27,966 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:30:27,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2021-12-22 14:30:28,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/571b02144/faf5f13f82444903823acf4ced1f31c9/FLAG91bca0ea7 [2021-12-22 14:30:28,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/571b02144/faf5f13f82444903823acf4ced1f31c9 [2021-12-22 14:30:28,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:30:28,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:30:28,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:30:28,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:30:28,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:30:28,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:30:28" (1/1) ... [2021-12-22 14:30:28,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef34301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:28, skipping insertion in model container [2021-12-22 14:30:28,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:30:28" (1/1) ... [2021-12-22 14:30:28,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:30:28,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:30:29,562 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i[231089,231102] [2021-12-22 14:30:29,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:30:29,723 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:30:29,978 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i[231089,231102] [2021-12-22 14:30:30,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:30:30,298 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:30:30,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:30 WrapperNode [2021-12-22 14:30:30,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:30:30,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:30:30,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:30:30,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:30:30,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:30" (1/1) ... [2021-12-22 14:30:30,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:30" (1/1) ... [2021-12-22 14:30:30,645 INFO L137 Inliner]: procedures = 206, calls = 2928, calls flagged for inlining = 89, calls inlined = 81, statements flattened = 7883 [2021-12-22 14:30:30,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:30:30,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:30:30,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:30:30,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:30:30,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:30" (1/1) ... [2021-12-22 14:30:30,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:30" (1/1) ... [2021-12-22 14:30:30,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:30" (1/1) ... [2021-12-22 14:30:30,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:30" (1/1) ... [2021-12-22 14:30:30,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:30" (1/1) ... [2021-12-22 14:30:30,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:30" (1/1) ... [2021-12-22 14:30:30,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:30" (1/1) ... [2021-12-22 14:30:30,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:30:30,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:30:30,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:30:30,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:30:30,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:30" (1/1) ... [2021-12-22 14:30:30,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:30:30,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:30:30,972 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) [2021-12-22 14:30:30,990 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 [2021-12-22 14:30:31,012 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_read_value [2021-12-22 14:30:31,013 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_read_value [2021-12-22 14:30:31,013 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-12-22 14:30:31,013 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-12-22 14:30:31,013 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_detect [2021-12-22 14:30:31,013 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_detect [2021-12-22 14:30:31,013 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-12-22 14:30:31,014 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-12-22 14:30:31,014 INFO L130 BoogieDeclarations]: Found specification of procedure store_beep [2021-12-22 14:30:31,014 INFO L138 BoogieDeclarations]: Found implementation of procedure store_beep [2021-12-22 14:30:31,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:30:31,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:30:31,014 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2021-12-22 14:30:31,015 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2021-12-22 14:30:31,015 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2021-12-22 14:30:31,015 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2021-12-22 14:30:31,015 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2021-12-22 14:30:31,015 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2021-12-22 14:30:31,015 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_FROM_REG [2021-12-22 14:30:31,015 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_FROM_REG [2021-12-22 14:30:31,016 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:30:31,016 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:30:31,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:30:31,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:30:31,016 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-12-22 14:30:31,016 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-12-22 14:30:31,017 INFO L130 BoogieDeclarations]: Found specification of procedure show_sensor [2021-12-22 14:30:31,017 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sensor [2021-12-22 14:30:31,017 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-22 14:30:31,017 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-22 14:30:31,017 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-12-22 14:30:31,017 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-12-22 14:30:31,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:30:31,018 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max_hyst [2021-12-22 14:30:31,018 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max_hyst [2021-12-22 14:30:31,018 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-12-22 14:30:31,018 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-12-22 14:30:31,018 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-12-22 14:30:31,018 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-12-22 14:30:31,019 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2021-12-22 14:30:31,019 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2021-12-22 14:30:31,019 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_isa_unregister [2021-12-22 14:30:31,019 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_isa_unregister [2021-12-22 14:30:31,019 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-12-22 14:30:31,020 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-12-22 14:30:31,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:30:31,020 INFO L130 BoogieDeclarations]: Found specification of procedure show_beep [2021-12-22 14:30:31,020 INFO L138 BoogieDeclarations]: Found implementation of procedure show_beep [2021-12-22 14:30:31,020 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-12-22 14:30:31,021 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-12-22 14:30:31,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:30:31,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:30:31,021 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-22 14:30:31,021 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-22 14:30:31,022 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-22 14:30:31,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-22 14:30:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2021-12-22 14:30:31,031 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2021-12-22 14:30:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2021-12-22 14:30:31,032 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2021-12-22 14:30:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-22 14:30:31,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-22 14:30:31,033 INFO L130 BoogieDeclarations]: Found specification of procedure store_sensor [2021-12-22 14:30:31,033 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sensor [2021-12-22 14:30:31,033 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_update_device [2021-12-22 14:30:31,033 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_update_device [2021-12-22 14:30:31,033 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_remove_files [2021-12-22 14:30:31,034 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_remove_files [2021-12-22 14:30:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-12-22 14:30:31,034 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-12-22 14:30:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-22 14:30:31,035 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-22 14:30:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2021-12-22 14:30:31,035 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2021-12-22 14:30:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2021-12-22 14:30:31,035 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2021-12-22 14:30:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-12-22 14:30:31,036 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-12-22 14:30:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_w83781d_data [2021-12-22 14:30:31,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_w83781d_data [2021-12-22 14:30:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:30:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-22 14:30:31,036 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-22 14:30:31,037 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-12-22 14:30:31,037 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-12-22 14:30:31,037 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2021-12-22 14:30:31,037 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2021-12-22 14:30:31,037 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-12-22 14:30:31,037 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-12-22 14:30:31,038 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2021-12-22 14:30:31,038 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2021-12-22 14:30:31,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:30:31,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2021-12-22 14:30:31,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2021-12-22 14:30:31,039 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2021-12-22 14:30:31,040 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2021-12-22 14:30:31,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:30:31,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:30:31,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_w83781d_data [2021-12-22 14:30:31,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_w83781d_data [2021-12-22 14:30:31,040 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max [2021-12-22 14:30:31,040 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max [2021-12-22 14:30:31,040 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_write_value [2021-12-22 14:30:31,040 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_write_value [2021-12-22 14:30:31,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:30:31,041 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-12-22 14:30:31,041 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-12-22 14:30:31,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:30:31,041 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2021-12-22 14:30:31,041 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2021-12-22 14:30:31,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:30:31,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2021-12-22 14:30:31,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2021-12-22 14:30:31,041 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2021-12-22 14:30:31,041 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2021-12-22 14:30:31,041 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max_hyst [2021-12-22 14:30:31,041 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max_hyst [2021-12-22 14:30:31,042 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-12-22 14:30:31,042 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-12-22 14:30:31,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:30:31,042 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2021-12-22 14:30:31,042 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2021-12-22 14:30:31,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:30:31,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:30:31,042 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-22 14:30:31,042 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-22 14:30:31,849 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:30:31,852 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:30:37,382 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:30:37,407 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:30:37,407 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 14:30:37,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:30:37 BoogieIcfgContainer [2021-12-22 14:30:37,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:30:37,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:30:37,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:30:37,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:30:37,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:30:28" (1/3) ... [2021-12-22 14:30:37,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56668e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:30:37, skipping insertion in model container [2021-12-22 14:30:37,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:30" (2/3) ... [2021-12-22 14:30:37,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56668e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:30:37, skipping insertion in model container [2021-12-22 14:30:37,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:30:37" (3/3) ... [2021-12-22 14:30:37,423 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2021-12-22 14:30:37,432 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:30:37,432 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:30:37,489 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:30:37,499 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 14:30:37,500 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:30:37,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 1942 states, 1456 states have (on average 1.5206043956043955) internal successors, (2214), 1467 states have internal predecessors, (2214), 427 states have call successors, (427), 57 states have call predecessors, (427), 57 states have return successors, (427), 427 states have call predecessors, (427), 427 states have call successors, (427) [2021-12-22 14:30:37,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-22 14:30:37,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:37,575 INFO L514 BasicCegarLoop]: 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] [2021-12-22 14:30:37,575 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:37,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:37,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1921795242, now seen corresponding path program 1 times [2021-12-22 14:30:37,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:37,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776708643] [2021-12-22 14:30:37,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:37,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:38,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 14:30:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:38,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:38,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:38,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776708643] [2021-12-22 14:30:38,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776708643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:38,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:38,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:38,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319398885] [2021-12-22 14:30:38,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:38,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:38,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:38,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:38,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:38,465 INFO L87 Difference]: Start difference. First operand has 1942 states, 1456 states have (on average 1.5206043956043955) internal successors, (2214), 1467 states have internal predecessors, (2214), 427 states have call successors, (427), 57 states have call predecessors, (427), 57 states have return successors, (427), 427 states have call predecessors, (427), 427 states have call successors, (427) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:41,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:41,254 INFO L93 Difference]: Finished difference Result 5822 states and 9819 transitions. [2021-12-22 14:30:41,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:30:41,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2021-12-22 14:30:41,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:41,302 INFO L225 Difference]: With dead ends: 5822 [2021-12-22 14:30:41,303 INFO L226 Difference]: Without dead ends: 3875 [2021-12-22 14:30:41,335 INFO L932 BasicCegarLoop]: 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 [2021-12-22 14:30:41,340 INFO L933 BasicCegarLoop]: 3617 mSDtfsCounter, 3029 mSDsluCounter, 5250 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 928 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3289 SdHoareTripleChecker+Valid, 8867 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 928 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:41,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3289 Valid, 8867 Invalid, 1780 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [928 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 14:30:41,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3875 states. [2021-12-22 14:30:41,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3875 to 3839. [2021-12-22 14:30:41,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3839 states, 2883 states have (on average 1.5202913631633714) internal successors, (4383), 2894 states have internal predecessors, (4383), 843 states have call successors, (843), 113 states have call predecessors, (843), 112 states have return successors, (834), 833 states have call predecessors, (834), 834 states have call successors, (834) [2021-12-22 14:30:41,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 6060 transitions. [2021-12-22 14:30:41,589 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 6060 transitions. Word has length 31 [2021-12-22 14:30:41,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:41,590 INFO L470 AbstractCegarLoop]: Abstraction has 3839 states and 6060 transitions. [2021-12-22 14:30:41,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:41,590 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 6060 transitions. [2021-12-22 14:30:41,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 14:30:41,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:41,593 INFO L514 BasicCegarLoop]: 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] [2021-12-22 14:30:41,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:30:41,594 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:41,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:41,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1987244376, now seen corresponding path program 1 times [2021-12-22 14:30:41,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:41,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521352226] [2021-12-22 14:30:41,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:41,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:41,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 14:30:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:41,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:41,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:41,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521352226] [2021-12-22 14:30:41,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521352226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:41,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:41,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:41,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124594076] [2021-12-22 14:30:41,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:41,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:41,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:41,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:41,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:41,971 INFO L87 Difference]: Start difference. First operand 3839 states and 6060 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:44,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:44,513 INFO L93 Difference]: Finished difference Result 11531 states and 18262 transitions. [2021-12-22 14:30:44,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:30:44,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2021-12-22 14:30:44,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:44,561 INFO L225 Difference]: With dead ends: 11531 [2021-12-22 14:30:44,562 INFO L226 Difference]: Without dead ends: 7695 [2021-12-22 14:30:44,587 INFO L932 BasicCegarLoop]: 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 [2021-12-22 14:30:44,589 INFO L933 BasicCegarLoop]: 3643 mSDtfsCounter, 3030 mSDsluCounter, 5287 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3290 SdHoareTripleChecker+Valid, 8930 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:44,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3290 Valid, 8930 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [927 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-22 14:30:44,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7695 states. [2021-12-22 14:30:44,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7695 to 7643. [2021-12-22 14:30:44,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7643 states, 5743 states have (on average 1.5202855650356957) internal successors, (8731), 5758 states have internal predecessors, (8731), 1675 states have call successors, (1675), 225 states have call predecessors, (1675), 224 states have return successors, (1666), 1663 states have call predecessors, (1666), 1666 states have call successors, (1666) [2021-12-22 14:30:44,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7643 states to 7643 states and 12072 transitions. [2021-12-22 14:30:44,868 INFO L78 Accepts]: Start accepts. Automaton has 7643 states and 12072 transitions. Word has length 32 [2021-12-22 14:30:44,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:44,869 INFO L470 AbstractCegarLoop]: Abstraction has 7643 states and 12072 transitions. [2021-12-22 14:30:44,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:44,869 INFO L276 IsEmpty]: Start isEmpty. Operand 7643 states and 12072 transitions. [2021-12-22 14:30:44,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 14:30:44,871 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:44,871 INFO L514 BasicCegarLoop]: 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] [2021-12-22 14:30:44,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:30:44,875 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:44,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:44,875 INFO L85 PathProgramCache]: Analyzing trace with hash -886111828, now seen corresponding path program 1 times [2021-12-22 14:30:44,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:44,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810222687] [2021-12-22 14:30:44,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:44,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:45,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:45,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:45,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:45,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810222687] [2021-12-22 14:30:45,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810222687] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:45,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:45,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:45,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780938148] [2021-12-22 14:30:45,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:45,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:45,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:45,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:45,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:45,356 INFO L87 Difference]: Start difference. First operand 7643 states and 12072 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:48,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:48,207 INFO L93 Difference]: Finished difference Result 22963 states and 36386 transitions. [2021-12-22 14:30:48,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:30:48,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2021-12-22 14:30:48,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:48,328 INFO L225 Difference]: With dead ends: 22963 [2021-12-22 14:30:48,329 INFO L226 Difference]: Without dead ends: 15323 [2021-12-22 14:30:48,384 INFO L932 BasicCegarLoop]: 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 [2021-12-22 14:30:48,385 INFO L933 BasicCegarLoop]: 3530 mSDtfsCounter, 3067 mSDsluCounter, 5229 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 960 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3315 SdHoareTripleChecker+Valid, 8759 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 960 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:48,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3315 Valid, 8759 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [960 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 14:30:48,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15323 states. [2021-12-22 14:30:49,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15323 to 15239. [2021-12-22 14:30:49,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15239 states, 11453 states have (on average 1.5200384178817776) internal successors, (17409), 11476 states have internal predecessors, (17409), 3337 states have call successors, (3337), 449 states have call predecessors, (3337), 448 states have return successors, (3328), 3321 states have call predecessors, (3328), 3328 states have call successors, (3328) [2021-12-22 14:30:49,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15239 states to 15239 states and 24074 transitions. [2021-12-22 14:30:49,179 INFO L78 Accepts]: Start accepts. Automaton has 15239 states and 24074 transitions. Word has length 28 [2021-12-22 14:30:49,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:49,180 INFO L470 AbstractCegarLoop]: Abstraction has 15239 states and 24074 transitions. [2021-12-22 14:30:49,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:49,181 INFO L276 IsEmpty]: Start isEmpty. Operand 15239 states and 24074 transitions. [2021-12-22 14:30:49,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-22 14:30:49,183 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:49,183 INFO L514 BasicCegarLoop]: 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] [2021-12-22 14:30:49,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:30:49,183 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:49,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:49,185 INFO L85 PathProgramCache]: Analyzing trace with hash 409562076, now seen corresponding path program 1 times [2021-12-22 14:30:49,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:49,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053234619] [2021-12-22 14:30:49,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:49,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:49,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 14:30:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:49,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:49,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:49,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053234619] [2021-12-22 14:30:49,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053234619] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:49,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:49,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:49,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175133822] [2021-12-22 14:30:49,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:49,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:49,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:49,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:49,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:49,558 INFO L87 Difference]: Start difference. First operand 15239 states and 24074 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:52,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:52,515 INFO L93 Difference]: Finished difference Result 45791 states and 72568 transitions. [2021-12-22 14:30:52,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:30:52,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2021-12-22 14:30:52,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:52,706 INFO L225 Difference]: With dead ends: 45791 [2021-12-22 14:30:52,707 INFO L226 Difference]: Without dead ends: 30555 [2021-12-22 14:30:52,828 INFO L932 BasicCegarLoop]: 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 [2021-12-22 14:30:52,830 INFO L933 BasicCegarLoop]: 3855 mSDtfsCounter, 3046 mSDsluCounter, 5470 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3307 SdHoareTripleChecker+Valid, 9325 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:52,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3307 Valid, 9325 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-22 14:30:52,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30555 states. [2021-12-22 14:30:53,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30555 to 30407. [2021-12-22 14:30:54,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30407 states, 22853 states have (on average 1.519669190040695) internal successors, (34729), 22892 states have internal predecessors, (34729), 6657 states have call successors, (6657), 897 states have call predecessors, (6657), 896 states have return successors, (6648), 6633 states have call predecessors, (6648), 6648 states have call successors, (6648) [2021-12-22 14:30:54,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30407 states to 30407 states and 48034 transitions. [2021-12-22 14:30:54,230 INFO L78 Accepts]: Start accepts. Automaton has 30407 states and 48034 transitions. Word has length 29 [2021-12-22 14:30:54,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:54,231 INFO L470 AbstractCegarLoop]: Abstraction has 30407 states and 48034 transitions. [2021-12-22 14:30:54,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:54,231 INFO L276 IsEmpty]: Start isEmpty. Operand 30407 states and 48034 transitions. [2021-12-22 14:30:54,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-22 14:30:54,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:54,236 INFO L514 BasicCegarLoop]: 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] [2021-12-22 14:30:54,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:30:54,237 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:54,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:54,237 INFO L85 PathProgramCache]: Analyzing trace with hash -919829617, now seen corresponding path program 1 times [2021-12-22 14:30:54,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:54,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355079265] [2021-12-22 14:30:54,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:54,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:54,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:30:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:54,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:54,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:54,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:54,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355079265] [2021-12-22 14:30:54,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355079265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:54,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:54,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:54,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844327359] [2021-12-22 14:30:54,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:54,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:54,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:54,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:54,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:54,641 INFO L87 Difference]: Start difference. First operand 30407 states and 48034 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) [2021-12-22 14:30:58,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:58,256 INFO L93 Difference]: Finished difference Result 91375 states and 144800 transitions. [2021-12-22 14:30:58,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:30:58,257 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 [2021-12-22 14:30:58,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:58,610 INFO L225 Difference]: With dead ends: 91375 [2021-12-22 14:30:58,611 INFO L226 Difference]: Without dead ends: 60971 [2021-12-22 14:30:58,763 INFO L932 BasicCegarLoop]: 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 [2021-12-22 14:30:58,765 INFO L933 BasicCegarLoop]: 3961 mSDtfsCounter, 3013 mSDsluCounter, 5537 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 881 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3272 SdHoareTripleChecker+Valid, 9498 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 881 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:58,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3272 Valid, 9498 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [881 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-22 14:30:58,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60971 states. [2021-12-22 14:31:00,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60971 to 60695. [2021-12-22 14:31:00,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60695 states, 45613 states have (on average 1.5192379365531756) internal successors, (69297), 45684 states have internal predecessors, (69297), 13289 states have call successors, (13289), 1793 states have call predecessors, (13289), 1792 states have return successors, (13280), 13249 states have call predecessors, (13280), 13280 states have call successors, (13280) [2021-12-22 14:31:01,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60695 states to 60695 states and 95866 transitions. [2021-12-22 14:31:01,487 INFO L78 Accepts]: Start accepts. Automaton has 60695 states and 95866 transitions. Word has length 34 [2021-12-22 14:31:01,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:01,488 INFO L470 AbstractCegarLoop]: Abstraction has 60695 states and 95866 transitions. [2021-12-22 14:31:01,488 INFO L471 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) [2021-12-22 14:31:01,488 INFO L276 IsEmpty]: Start isEmpty. Operand 60695 states and 95866 transitions. [2021-12-22 14:31:01,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 14:31:01,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:01,490 INFO L514 BasicCegarLoop]: 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] [2021-12-22 14:31:01,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:31:01,490 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:01,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:01,491 INFO L85 PathProgramCache]: Analyzing trace with hash 2119451473, now seen corresponding path program 1 times [2021-12-22 14:31:01,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:01,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306526699] [2021-12-22 14:31:01,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:01,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:01,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 14:31:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:01,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:31:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:01,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:01,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:01,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306526699] [2021-12-22 14:31:01,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306526699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:01,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:01,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:31:01,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949082064] [2021-12-22 14:31:01,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:01,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:31:01,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:01,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:31:01,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:31:01,971 INFO L87 Difference]: Start difference. First operand 60695 states and 95866 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:31:06,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:06,325 INFO L93 Difference]: Finished difference Result 182271 states and 288776 transitions. [2021-12-22 14:31:06,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:31:06,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2021-12-22 14:31:06,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:07,044 INFO L225 Difference]: With dead ends: 182271 [2021-12-22 14:31:07,044 INFO L226 Difference]: Without dead ends: 121579 [2021-12-22 14:31:07,358 INFO L932 BasicCegarLoop]: 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 [2021-12-22 14:31:07,359 INFO L933 BasicCegarLoop]: 3892 mSDtfsCounter, 3016 mSDsluCounter, 5497 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3263 SdHoareTripleChecker+Valid, 9389 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:31:07,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3263 Valid, 9389 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-22 14:31:07,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121579 states. [2021-12-22 14:31:10,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121579 to 121047. [2021-12-22 14:31:10,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121047 states, 90957 states have (on average 1.5186186879514496) internal successors, (138129), 91092 states have internal predecessors, (138129), 26505 states have call successors, (26505), 3585 states have call predecessors, (26505), 3584 states have return successors, (26496), 26433 states have call predecessors, (26496), 26496 states have call successors, (26496) [2021-12-22 14:31:12,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121047 states to 121047 states and 191130 transitions. [2021-12-22 14:31:12,064 INFO L78 Accepts]: Start accepts. Automaton has 121047 states and 191130 transitions. Word has length 32 [2021-12-22 14:31:12,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:12,065 INFO L470 AbstractCegarLoop]: Abstraction has 121047 states and 191130 transitions. [2021-12-22 14:31:12,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:31:12,066 INFO L276 IsEmpty]: Start isEmpty. Operand 121047 states and 191130 transitions. [2021-12-22 14:31:12,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-22 14:31:12,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:12,067 INFO L514 BasicCegarLoop]: 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] [2021-12-22 14:31:12,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:31:12,068 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:12,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:12,068 INFO L85 PathProgramCache]: Analyzing trace with hash 2080190433, now seen corresponding path program 1 times [2021-12-22 14:31:12,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:12,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291700635] [2021-12-22 14:31:12,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:12,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:12,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 14:31:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:12,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:31:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:12,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:12,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291700635] [2021-12-22 14:31:12,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291700635] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:12,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:12,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:31:12,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691906190] [2021-12-22 14:31:12,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:12,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:31:12,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:12,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:31:12,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:31:12,450 INFO L87 Difference]: Start difference. First operand 121047 states and 191130 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)