./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--asb100.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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--asb100.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 a172742698d01ea3d6a7e277a97e7636a1425e62fd3035feb511b810f7b798f5 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:48:24,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:48:24,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:48:24,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:48:24,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:48:24,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:48:24,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:48:24,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:48:24,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:48:24,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:48:24,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:48:24,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:48:24,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:48:24,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:48:24,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:48:24,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:48:24,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:48:24,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:48:24,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:48:24,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:48:24,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:48:24,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:48:24,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:48:24,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:48:24,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:48:24,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:48:24,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:48:24,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:48:24,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:48:24,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:48:24,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:48:24,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:48:24,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:48:24,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:48:24,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:48:24,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:48:24,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:48:24,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:48:24,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:48:24,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:48:24,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:48:24,478 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:48:24,515 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:48:24,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:48:24,517 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:48:24,517 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:48:24,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:48:24,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:48:24,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:48:24,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:48:24,519 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:48:24,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:48:24,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:48:24,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:48:24,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:48:24,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:48:24,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:48:24,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:48:24,521 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:48:24,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:48:24,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:48:24,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:48:24,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:48:24,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:48:24,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:48:24,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:48:24,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:48:24,523 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:48:24,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:48:24,523 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:48:24,523 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:48:24,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:48:24,524 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a172742698d01ea3d6a7e277a97e7636a1425e62fd3035feb511b810f7b798f5 [2021-12-28 03:48:24,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:48:24,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:48:24,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:48:24,858 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:48:24,859 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:48:24,860 INFO L432 ainManager$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--asb100.ko-main.cil.out.i [2021-12-28 03:48:24,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13570a403/ba81aadaf26d41fba723cc13f306ae51/FLAG57da4f3ae [2021-12-28 03:48:25,736 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:48:25,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2021-12-28 03:48:25,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13570a403/ba81aadaf26d41fba723cc13f306ae51/FLAG57da4f3ae [2021-12-28 03:48:25,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13570a403/ba81aadaf26d41fba723cc13f306ae51 [2021-12-28 03:48:25,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:48:25,913 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:48:25,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:48:25,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:48:25,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:48:25,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:48:25" (1/1) ... [2021-12-28 03:48:25,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@486204dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:25, skipping insertion in model container [2021-12-28 03:48:25,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:48:25" (1/1) ... [2021-12-28 03:48:25,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:48:26,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:48:27,241 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--asb100.ko-main.cil.out.i[168612,168625] [2021-12-28 03:48:27,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:48:27,443 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:48:27,625 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--asb100.ko-main.cil.out.i[168612,168625] [2021-12-28 03:48:27,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:48:27,835 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:48:27,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:27 WrapperNode [2021-12-28 03:48:27,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:48:27,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:48:27,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:48:27,839 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:48:27,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:27" (1/1) ... [2021-12-28 03:48:27,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:27" (1/1) ... [2021-12-28 03:48:28,106 INFO L137 Inliner]: procedures = 184, calls = 1937, calls flagged for inlining = 74, calls inlined = 66, statements flattened = 5079 [2021-12-28 03:48:28,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:48:28,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:48:28,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:48:28,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:48:28,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:27" (1/1) ... [2021-12-28 03:48:28,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:27" (1/1) ... [2021-12-28 03:48:28,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:27" (1/1) ... [2021-12-28 03:48:28,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:27" (1/1) ... [2021-12-28 03:48:28,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:27" (1/1) ... [2021-12-28 03:48:28,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:27" (1/1) ... [2021-12-28 03:48:28,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:27" (1/1) ... [2021-12-28 03:48:28,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:48:28,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:48:28,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:48:28,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:48:28,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:27" (1/1) ... [2021-12-28 03:48:28,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:48:28,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:48:28,405 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) [2021-12-28 03:48:28,416 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 [2021-12-28 03:48:28,448 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-12-28 03:48:28,449 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-12-28 03:48:28,449 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-28 03:48:28,449 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-28 03:48:28,450 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2021-12-28 03:48:28,450 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2021-12-28 03:48:28,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_asb100_data [2021-12-28 03:48:28,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_asb100_data [2021-12-28 03:48:28,450 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-12-28 03:48:28,450 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-12-28 03:48:28,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2021-12-28 03:48:28,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2021-12-28 03:48:28,451 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_max [2021-12-28 03:48:28,451 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_max [2021-12-28 03:48:28,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:48:28,452 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_hyst [2021-12-28 03:48:28,452 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_hyst [2021-12-28 03:48:28,452 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-12-28 03:48:28,452 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-12-28 03:48:28,452 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-28 03:48:28,452 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-28 03:48:28,453 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-12-28 03:48:28,453 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-12-28 03:48:28,453 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_hyst [2021-12-28 03:48:28,453 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_hyst [2021-12-28 03:48:28,453 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf_temp_from_reg [2021-12-28 03:48:28,453 INFO L138 BoogieDeclarations]: Found implementation of procedure sprintf_temp_from_reg [2021-12-28 03:48:28,453 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:48:28,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:48:28,454 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_update_device [2021-12-28 03:48:28,454 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_update_device [2021-12-28 03:48:28,454 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2021-12-28 03:48:28,454 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2021-12-28 03:48:28,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_asb100_data [2021-12-28 03:48:28,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_asb100_data [2021-12-28 03:48:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-12-28 03:48:28,455 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-12-28 03:48:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_div [2021-12-28 03:48:28,456 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_div [2021-12-28 03:48:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2021-12-28 03:48:28,456 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2021-12-28 03:48:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:48:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 03:48:28,457 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 03:48:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:48:28,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:48:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2021-12-28 03:48:28,457 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2021-12-28 03:48:28,458 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_max [2021-12-28 03:48:28,458 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_max [2021-12-28 03:48:28,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:48:28,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:48:28,458 INFO L130 BoogieDeclarations]: Found specification of procedure IN_TO_REG [2021-12-28 03:48:28,459 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_TO_REG [2021-12-28 03:48:28,459 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_min [2021-12-28 03:48:28,459 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_min [2021-12-28 03:48:28,460 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_write_value [2021-12-28 03:48:28,460 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_write_value [2021-12-28 03:48:28,460 INFO L130 BoogieDeclarations]: Found specification of procedure TEMP_TO_REG [2021-12-28 03:48:28,460 INFO L138 BoogieDeclarations]: Found implementation of procedure TEMP_TO_REG [2021-12-28 03:48:28,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:48:28,461 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-28 03:48:28,461 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-28 03:48:28,461 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-12-28 03:48:28,461 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-12-28 03:48:28,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:48:28,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:48:28,462 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_min [2021-12-28 03:48:28,462 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_min [2021-12-28 03:48:28,462 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-12-28 03:48:28,462 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-12-28 03:48:28,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:48:28,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_asb100_data [2021-12-28 03:48:28,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_asb100_data [2021-12-28 03:48:28,464 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2021-12-28 03:48:28,464 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2021-12-28 03:48:28,464 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-12-28 03:48:28,464 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-12-28 03:48:28,464 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-12-28 03:48:28,464 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-12-28 03:48:28,464 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2021-12-28 03:48:28,465 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2021-12-28 03:48:28,465 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-12-28 03:48:28,465 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-12-28 03:48:28,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:48:28,465 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-12-28 03:48:28,465 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-12-28 03:48:28,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:48:28,466 INFO L130 BoogieDeclarations]: Found specification of procedure IN_FROM_REG [2021-12-28 03:48:28,466 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_FROM_REG [2021-12-28 03:48:28,466 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-12-28 03:48:28,467 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-12-28 03:48:28,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:48:28,467 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-28 03:48:28,467 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-28 03:48:28,467 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_detect [2021-12-28 03:48:28,468 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_detect [2021-12-28 03:48:28,468 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_read_value [2021-12-28 03:48:28,468 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_read_value [2021-12-28 03:48:28,469 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-28 03:48:28,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-28 03:48:28,469 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2021-12-28 03:48:28,470 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2021-12-28 03:48:28,470 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-28 03:48:28,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-28 03:48:28,470 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2021-12-28 03:48:28,470 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2021-12-28 03:48:28,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:48:28,470 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2021-12-28 03:48:28,471 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2021-12-28 03:48:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:48:28,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:48:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-28 03:48:28,472 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-28 03:48:29,158 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:48:29,161 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:48:33,419 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:48:33,440 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:48:33,441 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:48:33,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:48:33 BoogieIcfgContainer [2021-12-28 03:48:33,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:48:33,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:48:33,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:48:33,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:48:33,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:48:25" (1/3) ... [2021-12-28 03:48:33,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be2253a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:48:33, skipping insertion in model container [2021-12-28 03:48:33,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:27" (2/3) ... [2021-12-28 03:48:33,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be2253a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:48:33, skipping insertion in model container [2021-12-28 03:48:33,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:48:33" (3/3) ... [2021-12-28 03:48:33,462 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2021-12-28 03:48:33,467 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:48:33,467 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:48:33,515 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:48:33,522 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 [2021-12-28 03:48:33,523 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:48:33,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 1289 states, 959 states have (on average 1.4817518248175183) internal successors, (1421), 973 states have internal predecessors, (1421), 277 states have call successors, (277), 51 states have call predecessors, (277), 51 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) [2021-12-28 03:48:33,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-28 03:48:33,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:33,583 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] [2021-12-28 03:48:33,585 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:33,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:33,589 INFO L85 PathProgramCache]: Analyzing trace with hash -773562485, now seen corresponding path program 1 times [2021-12-28 03:48:33,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:33,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401411859] [2021-12-28 03:48:33,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:33,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:34,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:48:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:34,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:34,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:34,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:34,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401411859] [2021-12-28 03:48:34,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401411859] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:34,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:34,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:48:34,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152698762] [2021-12-28 03:48:34,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:34,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:48:34,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:34,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:48:34,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:48:34,372 INFO L87 Difference]: Start difference. First operand has 1289 states, 959 states have (on average 1.4817518248175183) internal successors, (1421), 973 states have internal predecessors, (1421), 277 states have call successors, (277), 51 states have call predecessors, (277), 51 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 03:48:36,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:36,421 INFO L93 Difference]: Finished difference Result 3995 states and 6578 transitions. [2021-12-28 03:48:36,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:48:36,424 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-12-28 03:48:36,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:36,463 INFO L225 Difference]: With dead ends: 3995 [2021-12-28 03:48:36,464 INFO L226 Difference]: Without dead ends: 2701 [2021-12-28 03:48:36,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:48:36,487 INFO L933 BasicCegarLoop]: 2233 mSDtfsCounter, 2240 mSDsluCounter, 3312 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 682 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2410 SdHoareTripleChecker+Valid, 5545 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 682 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:36,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2410 Valid, 5545 Invalid, 1446 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [682 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-28 03:48:36,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2021-12-28 03:48:36,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2534. [2021-12-28 03:48:36,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2534 states, 1890 states have (on average 1.4804232804232804) internal successors, (2798), 1906 states have internal predecessors, (2798), 543 states have call successors, (543), 101 states have call predecessors, (543), 100 states have return successors, (534), 530 states have call predecessors, (534), 534 states have call successors, (534) [2021-12-28 03:48:36,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 3875 transitions. [2021-12-28 03:48:36,726 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 3875 transitions. Word has length 36 [2021-12-28 03:48:36,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:36,727 INFO L470 AbstractCegarLoop]: Abstraction has 2534 states and 3875 transitions. [2021-12-28 03:48:36,727 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 03:48:36,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 3875 transitions. [2021-12-28 03:48:36,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-28 03:48:36,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:36,736 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] [2021-12-28 03:48:36,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:48:36,736 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:36,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:36,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1794039467, now seen corresponding path program 1 times [2021-12-28 03:48:36,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:36,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793731583] [2021-12-28 03:48:36,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:36,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:37,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:48:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:37,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:37,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:37,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:37,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:37,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793731583] [2021-12-28 03:48:37,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793731583] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:37,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:37,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:48:37,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043880668] [2021-12-28 03:48:37,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:37,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:48:37,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:37,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:48:37,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:48:37,087 INFO L87 Difference]: Start difference. First operand 2534 states and 3875 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 03:48:39,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:39,171 INFO L93 Difference]: Finished difference Result 7872 states and 12229 transitions. [2021-12-28 03:48:39,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:48:39,172 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-12-28 03:48:39,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:39,216 INFO L225 Difference]: With dead ends: 7872 [2021-12-28 03:48:39,216 INFO L226 Difference]: Without dead ends: 5341 [2021-12-28 03:48:39,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:48:39,243 INFO L933 BasicCegarLoop]: 2232 mSDtfsCounter, 2234 mSDsluCounter, 3169 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2406 SdHoareTripleChecker+Valid, 5401 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:39,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2406 Valid, 5401 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [720 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-28 03:48:39,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5341 states. [2021-12-28 03:48:39,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5341 to 5026. [2021-12-28 03:48:39,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 3752 states have (on average 1.4797441364605544) internal successors, (5552), 3776 states have internal predecessors, (5552), 1073 states have call successors, (1073), 201 states have call predecessors, (1073), 200 states have return successors, (1064), 1056 states have call predecessors, (1064), 1064 states have call successors, (1064) [2021-12-28 03:48:39,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 7689 transitions. [2021-12-28 03:48:39,482 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 7689 transitions. Word has length 38 [2021-12-28 03:48:39,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:39,482 INFO L470 AbstractCegarLoop]: Abstraction has 5026 states and 7689 transitions. [2021-12-28 03:48:39,483 INFO L471 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 03:48:39,483 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 7689 transitions. [2021-12-28 03:48:39,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-28 03:48:39,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:39,485 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] [2021-12-28 03:48:39,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:48:39,485 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:39,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:39,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1767320045, now seen corresponding path program 1 times [2021-12-28 03:48:39,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:39,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797747902] [2021-12-28 03:48:39,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:39,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:39,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 03:48:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:39,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:39,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:39,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:39,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:39,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797747902] [2021-12-28 03:48:39,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797747902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:39,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:39,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:48:39,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437010569] [2021-12-28 03:48:39,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:39,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:48:39,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:39,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:48:39,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:48:39,792 INFO L87 Difference]: Start difference. First operand 5026 states and 7689 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 03:48:41,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:41,815 INFO L93 Difference]: Finished difference Result 15564 states and 24181 transitions. [2021-12-28 03:48:41,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:48:41,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2021-12-28 03:48:41,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:41,889 INFO L225 Difference]: With dead ends: 15564 [2021-12-28 03:48:41,889 INFO L226 Difference]: Without dead ends: 10541 [2021-12-28 03:48:41,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:48:41,920 INFO L933 BasicCegarLoop]: 2398 mSDtfsCounter, 2107 mSDsluCounter, 3192 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2260 SdHoareTripleChecker+Valid, 5590 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:41,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2260 Valid, 5590 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-28 03:48:41,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10541 states. [2021-12-28 03:48:42,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10541 to 9930. [2021-12-28 03:48:42,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9930 states, 7424 states have (on average 1.4800646551724137) internal successors, (10988), 7464 states have internal predecessors, (10988), 2105 states have call successors, (2105), 401 states have call predecessors, (2105), 400 states have return successors, (2096), 2080 states have call predecessors, (2096), 2096 states have call successors, (2096) [2021-12-28 03:48:42,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9930 states to 9930 states and 15189 transitions. [2021-12-28 03:48:42,417 INFO L78 Accepts]: Start accepts. Automaton has 9930 states and 15189 transitions. Word has length 39 [2021-12-28 03:48:42,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:42,418 INFO L470 AbstractCegarLoop]: Abstraction has 9930 states and 15189 transitions. [2021-12-28 03:48:42,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 03:48:42,418 INFO L276 IsEmpty]: Start isEmpty. Operand 9930 states and 15189 transitions. [2021-12-28 03:48:42,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-28 03:48:42,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:42,420 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] [2021-12-28 03:48:42,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:48:42,420 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:42,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:42,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1333303287, now seen corresponding path program 1 times [2021-12-28 03:48:42,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:42,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620108704] [2021-12-28 03:48:42,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:42,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:42,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:48:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:42,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:42,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:42,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:42,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:42,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620108704] [2021-12-28 03:48:42,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620108704] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:42,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:42,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:48:42,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494315379] [2021-12-28 03:48:42,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:42,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:48:42,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:42,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:48:42,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:48:42,674 INFO L87 Difference]: Start difference. First operand 9930 states and 15189 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 03:48:44,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:44,849 INFO L93 Difference]: Finished difference Result 30888 states and 47985 transitions. [2021-12-28 03:48:44,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:48:44,850 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2021-12-28 03:48:44,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:44,971 INFO L225 Difference]: With dead ends: 30888 [2021-12-28 03:48:44,972 INFO L226 Difference]: Without dead ends: 20961 [2021-12-28 03:48:45,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:48:45,032 INFO L933 BasicCegarLoop]: 2458 mSDtfsCounter, 2183 mSDsluCounter, 3398 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2347 SdHoareTripleChecker+Valid, 5856 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:45,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2347 Valid, 5856 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 03:48:45,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20961 states. [2021-12-28 03:48:45,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20961 to 19758. [2021-12-28 03:48:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19758 states, 14772 states have (on average 1.479014351475765) internal successors, (21848), 14844 states have internal predecessors, (21848), 4185 states have call successors, (4185), 801 states have call predecessors, (4185), 800 states have return successors, (4176), 4144 states have call predecessors, (4176), 4176 states have call successors, (4176) [2021-12-28 03:48:45,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19758 states to 19758 states and 30209 transitions. [2021-12-28 03:48:45,809 INFO L78 Accepts]: Start accepts. Automaton has 19758 states and 30209 transitions. Word has length 35 [2021-12-28 03:48:45,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:45,810 INFO L470 AbstractCegarLoop]: Abstraction has 19758 states and 30209 transitions. [2021-12-28 03:48:45,810 INFO L471 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 03:48:45,811 INFO L276 IsEmpty]: Start isEmpty. Operand 19758 states and 30209 transitions. [2021-12-28 03:48:45,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-28 03:48:45,812 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:45,812 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] [2021-12-28 03:48:45,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:48:45,813 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:45,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:45,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1420650670, now seen corresponding path program 1 times [2021-12-28 03:48:45,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:45,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837030160] [2021-12-28 03:48:45,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:45,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:46,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:48:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:46,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:46,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:46,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:46,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837030160] [2021-12-28 03:48:46,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837030160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:46,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:46,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:48:46,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208240665] [2021-12-28 03:48:46,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:46,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:48:46,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:46,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:48:46,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:48:46,167 INFO L87 Difference]: Start difference. First operand 19758 states and 30209 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 03:48:48,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:48,495 INFO L93 Difference]: Finished difference Result 61204 states and 95037 transitions. [2021-12-28 03:48:48,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:48:48,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-12-28 03:48:48,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:48,715 INFO L225 Difference]: With dead ends: 61204 [2021-12-28 03:48:48,715 INFO L226 Difference]: Without dead ends: 41449 [2021-12-28 03:48:48,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:48:48,967 INFO L933 BasicCegarLoop]: 2533 mSDtfsCounter, 2120 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2273 SdHoareTripleChecker+Valid, 5938 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:48,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2273 Valid, 5938 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 03:48:49,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41449 states. [2021-12-28 03:48:50,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41449 to 39062. [2021-12-28 03:48:50,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39062 states, 29244 states have (on average 1.4799617015456161) internal successors, (43280), 29380 states have internal predecessors, (43280), 8217 states have call successors, (8217), 1601 states have call predecessors, (8217), 1600 states have return successors, (8208), 8144 states have call predecessors, (8208), 8208 states have call successors, (8208) [2021-12-28 03:48:50,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39062 states to 39062 states and 59705 transitions. [2021-12-28 03:48:50,805 INFO L78 Accepts]: Start accepts. Automaton has 39062 states and 59705 transitions. Word has length 38 [2021-12-28 03:48:50,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:50,805 INFO L470 AbstractCegarLoop]: Abstraction has 39062 states and 59705 transitions. [2021-12-28 03:48:50,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 03:48:50,807 INFO L276 IsEmpty]: Start isEmpty. Operand 39062 states and 59705 transitions. [2021-12-28 03:48:50,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-28 03:48:50,808 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:50,808 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] [2021-12-28 03:48:50,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:48:50,808 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:50,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:50,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1307690219, now seen corresponding path program 1 times [2021-12-28 03:48:50,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:50,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217768224] [2021-12-28 03:48:50,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:50,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:51,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:48:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:51,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:51,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:51,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:51,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:51,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217768224] [2021-12-28 03:48:51,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217768224] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:51,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:51,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:48:51,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532052431] [2021-12-28 03:48:51,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:51,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:48:51,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:51,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:48:51,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:48:51,124 INFO L87 Difference]: Start difference. First operand 39062 states and 59705 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 03:48:54,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:54,263 INFO L93 Difference]: Finished difference Result 121724 states and 188965 transitions. [2021-12-28 03:48:54,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:48:54,263 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-12-28 03:48:54,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:55,018 INFO L225 Difference]: With dead ends: 121724 [2021-12-28 03:48:55,018 INFO L226 Difference]: Without dead ends: 82665 [2021-12-28 03:48:55,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:48:55,217 INFO L933 BasicCegarLoop]: 2616 mSDtfsCounter, 2119 mSDsluCounter, 3425 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2275 SdHoareTripleChecker+Valid, 6041 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:55,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2275 Valid, 6041 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 03:48:55,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82665 states. [2021-12-28 03:48:57,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82665 to 77910. [2021-12-28 03:48:57,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77910 states, 58316 states have (on average 1.4791137938130188) internal successors, (86256), 58580 states have internal predecessors, (86256), 16393 states have call successors, (16393), 3201 states have call predecessors, (16393), 3200 states have return successors, (16384), 16256 states have call predecessors, (16384), 16384 states have call successors, (16384) [2021-12-28 03:48:58,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77910 states to 77910 states and 119033 transitions. [2021-12-28 03:48:58,616 INFO L78 Accepts]: Start accepts. Automaton has 77910 states and 119033 transitions. Word has length 36 [2021-12-28 03:48:58,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:58,617 INFO L470 AbstractCegarLoop]: Abstraction has 77910 states and 119033 transitions. [2021-12-28 03:48:58,617 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 03:48:58,617 INFO L276 IsEmpty]: Start isEmpty. Operand 77910 states and 119033 transitions. [2021-12-28 03:48:58,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-28 03:48:58,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:58,618 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] [2021-12-28 03:48:58,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:48:58,619 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:58,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:58,619 INFO L85 PathProgramCache]: Analyzing trace with hash 978250436, now seen corresponding path program 1 times [2021-12-28 03:48:58,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:58,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352576126] [2021-12-28 03:48:58,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:58,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:58,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:48:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:58,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:58,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:58,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:58,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352576126] [2021-12-28 03:48:58,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352576126] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:58,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:58,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:48:58,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961357678] [2021-12-28 03:48:58,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:58,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:48:58,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:58,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:48:58,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:48:58,845 INFO L87 Difference]: Start difference. First operand 77910 states and 119033 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 03:49:03,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:03,881 INFO L93 Difference]: Finished difference Result 242556 states and 376357 transitions. [2021-12-28 03:49:03,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:49:03,882 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2021-12-28 03:49:03,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:04,965 INFO L225 Difference]: With dead ends: 242556 [2021-12-28 03:49:04,965 INFO L226 Difference]: Without dead ends: 164649 [2021-12-28 03:49:05,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:49:05,292 INFO L933 BasicCegarLoop]: 2435 mSDtfsCounter, 2210 mSDsluCounter, 3400 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 5835 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:05,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2384 Valid, 5835 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 03:49:05,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164649 states. [2021-12-28 03:49:09,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164649 to 155158. [2021-12-28 03:49:09,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155158 states, 116108 states have (on average 1.4779343369965894) internal successors, (171600), 116628 states have internal predecessors, (171600), 32649 states have call successors, (32649), 6401 states have call predecessors, (32649), 6400 states have return successors, (32640), 32384 states have call predecessors, (32640), 32640 states have call successors, (32640) [2021-12-28 03:49:11,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155158 states to 155158 states and 236889 transitions. [2021-12-28 03:49:11,255 INFO L78 Accepts]: Start accepts. Automaton has 155158 states and 236889 transitions. Word has length 34 [2021-12-28 03:49:11,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:11,256 INFO L470 AbstractCegarLoop]: Abstraction has 155158 states and 236889 transitions. [2021-12-28 03:49:11,257 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 03:49:11,257 INFO L276 IsEmpty]: Start isEmpty. Operand 155158 states and 236889 transitions. [2021-12-28 03:49:11,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-28 03:49:11,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:11,258 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] [2021-12-28 03:49:11,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:49:11,259 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:11,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:11,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1315217039, now seen corresponding path program 1 times [2021-12-28 03:49:11,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:11,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850983493] [2021-12-28 03:49:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:11,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:11,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 03:49:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:11,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:11,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:11,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:11,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850983493] [2021-12-28 03:49:11,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850983493] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:11,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:11,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:49:11,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121429964] [2021-12-28 03:49:11,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:11,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:49:11,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:11,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:49:11,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:49:11,480 INFO L87 Difference]: Start difference. First operand 155158 states and 236889 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)