./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 c3fed411 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-tmp.no-commuhash-c3fed41 [2021-12-18 03:13:04,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 03:13:04,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 03:13:04,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 03:13:04,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 03:13:04,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 03:13:04,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 03:13:04,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 03:13:04,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 03:13:04,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 03:13:04,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 03:13:04,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 03:13:04,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 03:13:04,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 03:13:04,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 03:13:04,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 03:13:04,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 03:13:04,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 03:13:04,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 03:13:04,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 03:13:04,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 03:13:04,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 03:13:04,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 03:13:04,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 03:13:04,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 03:13:04,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 03:13:04,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 03:13:04,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 03:13:04,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 03:13:04,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 03:13:04,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 03:13:04,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 03:13:04,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 03:13:04,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 03:13:04,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 03:13:04,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 03:13:04,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 03:13:04,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 03:13:04,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 03:13:04,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 03:13:04,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 03:13:04,368 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 03:13:04,402 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 03:13:04,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 03:13:04,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 03:13:04,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 03:13:04,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 03:13:04,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 03:13:04,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 03:13:04,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 03:13:04,405 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 03:13:04,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 03:13:04,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 03:13:04,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 03:13:04,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 03:13:04,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 03:13:04,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 03:13:04,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 03:13:04,407 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 03:13:04,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 03:13:04,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 03:13:04,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 03:13:04,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 03:13:04,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 03:13:04,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 03:13:04,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 03:13:04,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 03:13:04,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 03:13:04,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 03:13:04,409 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 03:13:04,409 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 03:13:04,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 03:13:04,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 03:13:04,409 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a172742698d01ea3d6a7e277a97e7636a1425e62fd3035feb511b810f7b798f5 [2021-12-18 03:13:04,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 03:13:04,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 03:13:04,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 03:13:04,624 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 03:13:04,625 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 03:13:04,626 INFO L432 ainManager$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 [2021-12-18 03:13:04,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e51a6e9/c354c7152e3d4d1b8632e99d3638822e/FLAG47987390a [2021-12-18 03:13:05,245 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 03:13:05,246 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 [2021-12-18 03:13:05,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e51a6e9/c354c7152e3d4d1b8632e99d3638822e/FLAG47987390a [2021-12-18 03:13:05,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e51a6e9/c354c7152e3d4d1b8632e99d3638822e [2021-12-18 03:13:05,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 03:13:05,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 03:13:05,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 03:13:05,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 03:13:05,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 03:13:05,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:13:05" (1/1) ... [2021-12-18 03:13:05,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3c9a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:13:05, skipping insertion in model container [2021-12-18 03:13:05,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:13:05" (1/1) ... [2021-12-18 03:13:05,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 03:13:05,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 03:13:06,407 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] [2021-12-18 03:13:06,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 03:13:06,538 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 03:13:06,775 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] [2021-12-18 03:13:06,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 03:13:06,952 INFO L208 MainTranslator]: Completed translation [2021-12-18 03:13:06,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:13:06 WrapperNode [2021-12-18 03:13:06,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 03:13:06,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 03:13:06,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 03:13:06,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 03:13:06,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:13:06" (1/1) ... [2021-12-18 03:13:07,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:13:06" (1/1) ... [2021-12-18 03:13:07,202 INFO L137 Inliner]: procedures = 184, calls = 1937, calls flagged for inlining = 74, calls inlined = 66, statements flattened = 5079 [2021-12-18 03:13:07,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 03:13:07,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 03:13:07,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 03:13:07,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 03:13:07,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:13:06" (1/1) ... [2021-12-18 03:13:07,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:13:06" (1/1) ... [2021-12-18 03:13:07,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:13:06" (1/1) ... [2021-12-18 03:13:07,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:13:06" (1/1) ... [2021-12-18 03:13:07,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:13:06" (1/1) ... [2021-12-18 03:13:07,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:13:06" (1/1) ... [2021-12-18 03:13:07,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:13:06" (1/1) ... [2021-12-18 03:13:07,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 03:13:07,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 03:13:07,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 03:13:07,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 03:13:07,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:13:06" (1/1) ... [2021-12-18 03:13:07,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 03:13:07,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:13:07,484 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) [2021-12-18 03:13:07,488 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 [2021-12-18 03:13:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-12-18 03:13:07,514 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-12-18 03:13:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-18 03:13:07,515 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-18 03:13:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2021-12-18 03:13:07,515 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2021-12-18 03:13:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_asb100_data [2021-12-18 03:13:07,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_asb100_data [2021-12-18 03:13:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-12-18 03:13:07,515 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-12-18 03:13:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2021-12-18 03:13:07,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2021-12-18 03:13:07,516 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_max [2021-12-18 03:13:07,516 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_max [2021-12-18 03:13:07,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 03:13:07,516 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_hyst [2021-12-18 03:13:07,516 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_hyst [2021-12-18 03:13:07,516 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-12-18 03:13:07,516 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-12-18 03:13:07,517 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-18 03:13:07,517 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-18 03:13:07,517 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-12-18 03:13:07,517 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-12-18 03:13:07,517 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_hyst [2021-12-18 03:13:07,518 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_hyst [2021-12-18 03:13:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf_temp_from_reg [2021-12-18 03:13:07,518 INFO L138 BoogieDeclarations]: Found implementation of procedure sprintf_temp_from_reg [2021-12-18 03:13:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 03:13:07,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 03:13:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_update_device [2021-12-18 03:13:07,518 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_update_device [2021-12-18 03:13:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2021-12-18 03:13:07,518 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2021-12-18 03:13:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_asb100_data [2021-12-18 03:13:07,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_asb100_data [2021-12-18 03:13:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-12-18 03:13:07,519 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-12-18 03:13:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_div [2021-12-18 03:13:07,520 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_div [2021-12-18 03:13:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2021-12-18 03:13:07,520 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2021-12-18 03:13:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 03:13:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 03:13:07,520 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 03:13:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 03:13:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 03:13:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2021-12-18 03:13:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2021-12-18 03:13:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_max [2021-12-18 03:13:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_max [2021-12-18 03:13:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 03:13:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 03:13:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure IN_TO_REG [2021-12-18 03:13:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_TO_REG [2021-12-18 03:13:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_min [2021-12-18 03:13:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_min [2021-12-18 03:13:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_write_value [2021-12-18 03:13:07,523 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_write_value [2021-12-18 03:13:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure TEMP_TO_REG [2021-12-18 03:13:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure TEMP_TO_REG [2021-12-18 03:13:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 03:13:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-18 03:13:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-18 03:13:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-12-18 03:13:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-12-18 03:13:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 03:13:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 03:13:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_min [2021-12-18 03:13:07,525 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_min [2021-12-18 03:13:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-12-18 03:13:07,525 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-12-18 03:13:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 03:13:07,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_asb100_data [2021-12-18 03:13:07,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_asb100_data [2021-12-18 03:13:07,526 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2021-12-18 03:13:07,527 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2021-12-18 03:13:07,527 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-12-18 03:13:07,528 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-12-18 03:13:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-12-18 03:13:07,528 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-12-18 03:13:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2021-12-18 03:13:07,528 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2021-12-18 03:13:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-12-18 03:13:07,528 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-12-18 03:13:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 03:13:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-12-18 03:13:07,529 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-12-18 03:13:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 03:13:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure IN_FROM_REG [2021-12-18 03:13:07,529 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_FROM_REG [2021-12-18 03:13:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-12-18 03:13:07,530 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-12-18 03:13:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 03:13:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-18 03:13:07,530 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-18 03:13:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_detect [2021-12-18 03:13:07,531 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_detect [2021-12-18 03:13:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_read_value [2021-12-18 03:13:07,531 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_read_value [2021-12-18 03:13:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-18 03:13:07,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-18 03:13:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2021-12-18 03:13:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2021-12-18 03:13:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-18 03:13:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-18 03:13:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2021-12-18 03:13:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2021-12-18 03:13:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 03:13:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2021-12-18 03:13:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2021-12-18 03:13:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 03:13:07,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 03:13:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-18 03:13:07,534 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-18 03:13:08,031 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 03:13:08,034 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 03:13:10,217 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 03:13:10,234 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 03:13:10,235 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 03:13:10,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:13:10 BoogieIcfgContainer [2021-12-18 03:13:10,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 03:13:10,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 03:13:10,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 03:13:10,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 03:13:10,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 03:13:05" (1/3) ... [2021-12-18 03:13:10,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f79e9a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:13:10, skipping insertion in model container [2021-12-18 03:13:10,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:13:06" (2/3) ... [2021-12-18 03:13:10,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f79e9a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:13:10, skipping insertion in model container [2021-12-18 03:13:10,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:13:10" (3/3) ... [2021-12-18 03:13:10,252 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2021-12-18 03:13:10,260 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 03:13:10,260 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 03:13:10,307 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 03:13:10,317 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 [2021-12-18 03:13:10,317 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 03:13:10,344 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) [2021-12-18 03:13:10,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-18 03:13:10,352 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:10,353 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] [2021-12-18 03:13:10,353 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:10,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:10,357 INFO L85 PathProgramCache]: Analyzing trace with hash -773562485, now seen corresponding path program 1 times [2021-12-18 03:13:10,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:10,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742702297] [2021-12-18 03:13:10,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:10,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:10,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 03:13:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:10,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:10,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:13:10,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:10,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742702297] [2021-12-18 03:13:10,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742702297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:10,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:10,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:13:10,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080360229] [2021-12-18 03:13:10,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:10,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:13:10,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:10,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:13:10,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:13:10,944 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) [2021-12-18 03:13:12,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:12,602 INFO L93 Difference]: Finished difference Result 3995 states and 6578 transitions. [2021-12-18 03:13:12,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:13:12,604 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 [2021-12-18 03:13:12,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:12,627 INFO L225 Difference]: With dead ends: 3995 [2021-12-18 03:13:12,627 INFO L226 Difference]: Without dead ends: 2701 [2021-12-18 03:13:12,641 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 [2021-12-18 03:13:12,643 INFO L933 BasicCegarLoop]: 2243 mSDtfsCounter, 2240 mSDsluCounter, 3441 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 682 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2402 SdHoareTripleChecker+Valid, 5684 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 682 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:12,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2402 Valid, 5684 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [682 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-18 03:13:12,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2021-12-18 03:13:12,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2534. [2021-12-18 03:13:12,799 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) [2021-12-18 03:13:12,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 3875 transitions. [2021-12-18 03:13:12,815 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 3875 transitions. Word has length 36 [2021-12-18 03:13:12,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:12,816 INFO L470 AbstractCegarLoop]: Abstraction has 2534 states and 3875 transitions. [2021-12-18 03:13:12,816 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) [2021-12-18 03:13:12,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 3875 transitions. [2021-12-18 03:13:12,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-18 03:13:12,875 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:12,876 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] [2021-12-18 03:13:12,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 03:13:12,876 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:12,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:12,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1794039467, now seen corresponding path program 1 times [2021-12-18 03:13:12,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:12,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478023455] [2021-12-18 03:13:12,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:12,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:13,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 03:13:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:13,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:13,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:13:13,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:13,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478023455] [2021-12-18 03:13:13,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478023455] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:13,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:13,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:13:13,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558969115] [2021-12-18 03:13:13,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:13,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:13:13,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:13,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:13:13,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:13:13,078 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) [2021-12-18 03:13:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:14,521 INFO L93 Difference]: Finished difference Result 7872 states and 12229 transitions. [2021-12-18 03:13:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:13:14,522 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 [2021-12-18 03:13:14,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:14,568 INFO L225 Difference]: With dead ends: 7872 [2021-12-18 03:13:14,578 INFO L226 Difference]: Without dead ends: 5341 [2021-12-18 03:13:14,614 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 [2021-12-18 03:13:14,615 INFO L933 BasicCegarLoop]: 2325 mSDtfsCounter, 2180 mSDsluCounter, 3385 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 5710 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:14,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2342 Valid, 5710 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-18 03:13:14,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5341 states. [2021-12-18 03:13:14,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5341 to 5026. [2021-12-18 03:13:14,830 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) [2021-12-18 03:13:14,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 7689 transitions. [2021-12-18 03:13:14,853 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 7689 transitions. Word has length 38 [2021-12-18 03:13:14,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:14,853 INFO L470 AbstractCegarLoop]: Abstraction has 5026 states and 7689 transitions. [2021-12-18 03:13:14,853 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) [2021-12-18 03:13:14,853 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 7689 transitions. [2021-12-18 03:13:14,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-18 03:13:14,855 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:14,855 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] [2021-12-18 03:13:14,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 03:13:14,855 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:14,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:14,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1767320045, now seen corresponding path program 1 times [2021-12-18 03:13:14,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:14,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691031102] [2021-12-18 03:13:14,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:14,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:15,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:13:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:15,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:15,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:15,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:13:15,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:15,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691031102] [2021-12-18 03:13:15,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691031102] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:15,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:15,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:13:15,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082283715] [2021-12-18 03:13:15,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:15,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:13:15,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:15,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:13:15,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:13:15,140 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) [2021-12-18 03:13:18,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:13:18,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:18,817 INFO L93 Difference]: Finished difference Result 15564 states and 24181 transitions. [2021-12-18 03:13:18,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:13:18,818 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 [2021-12-18 03:13:18,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:18,864 INFO L225 Difference]: With dead ends: 15564 [2021-12-18 03:13:18,865 INFO L226 Difference]: Without dead ends: 10541 [2021-12-18 03:13:18,884 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 [2021-12-18 03:13:18,885 INFO L933 BasicCegarLoop]: 2256 mSDtfsCounter, 2213 mSDsluCounter, 3375 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 693 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2372 SdHoareTripleChecker+Valid, 5631 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:18,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2372 Valid, 5631 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 639 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2021-12-18 03:13:18,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10541 states. [2021-12-18 03:13:19,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10541 to 9930. [2021-12-18 03:13:19,179 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) [2021-12-18 03:13:19,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9930 states to 9930 states and 15189 transitions. [2021-12-18 03:13:19,216 INFO L78 Accepts]: Start accepts. Automaton has 9930 states and 15189 transitions. Word has length 39 [2021-12-18 03:13:19,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:19,216 INFO L470 AbstractCegarLoop]: Abstraction has 9930 states and 15189 transitions. [2021-12-18 03:13:19,217 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) [2021-12-18 03:13:19,217 INFO L276 IsEmpty]: Start isEmpty. Operand 9930 states and 15189 transitions. [2021-12-18 03:13:19,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-18 03:13:19,220 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:19,220 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] [2021-12-18 03:13:19,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 03:13:19,220 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:19,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:19,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1333303287, now seen corresponding path program 1 times [2021-12-18 03:13:19,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:19,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260455831] [2021-12-18 03:13:19,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:19,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:19,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:13:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:19,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:19,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:19,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:13:19,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:19,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260455831] [2021-12-18 03:13:19,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260455831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:19,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:19,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:13:19,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197032940] [2021-12-18 03:13:19,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:19,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:13:19,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:19,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:13:19,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:13:19,395 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) [2021-12-18 03:13:21,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:21,181 INFO L93 Difference]: Finished difference Result 30888 states and 47985 transitions. [2021-12-18 03:13:21,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:13:21,182 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 [2021-12-18 03:13:21,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:21,275 INFO L225 Difference]: With dead ends: 30888 [2021-12-18 03:13:21,275 INFO L226 Difference]: Without dead ends: 20961 [2021-12-18 03:13:21,325 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 [2021-12-18 03:13:21,326 INFO L933 BasicCegarLoop]: 2515 mSDtfsCounter, 2159 mSDsluCounter, 3522 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 6037 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:21,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2307 Valid, 6037 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-18 03:13:21,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20961 states. [2021-12-18 03:13:21,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20961 to 19758. [2021-12-18 03:13:21,910 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) [2021-12-18 03:13:21,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19758 states to 19758 states and 30209 transitions. [2021-12-18 03:13:21,997 INFO L78 Accepts]: Start accepts. Automaton has 19758 states and 30209 transitions. Word has length 35 [2021-12-18 03:13:21,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:21,998 INFO L470 AbstractCegarLoop]: Abstraction has 19758 states and 30209 transitions. [2021-12-18 03:13:21,998 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) [2021-12-18 03:13:21,998 INFO L276 IsEmpty]: Start isEmpty. Operand 19758 states and 30209 transitions. [2021-12-18 03:13:21,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-18 03:13:21,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:21,999 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] [2021-12-18 03:13:22,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 03:13:22,000 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:22,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:22,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1420650670, now seen corresponding path program 1 times [2021-12-18 03:13:22,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:22,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118644923] [2021-12-18 03:13:22,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:22,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:22,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 03:13:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:22,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:22,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:13:22,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:22,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118644923] [2021-12-18 03:13:22,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118644923] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:22,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:22,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:13:22,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902981776] [2021-12-18 03:13:22,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:22,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:13:22,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:22,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:13:22,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:13:22,216 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) [2021-12-18 03:13:24,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:24,609 INFO L93 Difference]: Finished difference Result 61204 states and 95037 transitions. [2021-12-18 03:13:24,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:13:24,610 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 [2021-12-18 03:13:24,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:24,942 INFO L225 Difference]: With dead ends: 61204 [2021-12-18 03:13:24,942 INFO L226 Difference]: Without dead ends: 41449 [2021-12-18 03:13:25,006 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 [2021-12-18 03:13:25,009 INFO L933 BasicCegarLoop]: 2505 mSDtfsCounter, 2137 mSDsluCounter, 3537 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 6042 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:25,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2288 Valid, 6042 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-18 03:13:25,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41449 states. [2021-12-18 03:13:26,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41449 to 39062. [2021-12-18 03:13:26,126 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) [2021-12-18 03:13:26,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39062 states to 39062 states and 59705 transitions. [2021-12-18 03:13:26,292 INFO L78 Accepts]: Start accepts. Automaton has 39062 states and 59705 transitions. Word has length 38 [2021-12-18 03:13:26,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:26,293 INFO L470 AbstractCegarLoop]: Abstraction has 39062 states and 59705 transitions. [2021-12-18 03:13:26,293 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) [2021-12-18 03:13:26,293 INFO L276 IsEmpty]: Start isEmpty. Operand 39062 states and 59705 transitions. [2021-12-18 03:13:26,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-18 03:13:26,294 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:26,294 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] [2021-12-18 03:13:26,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 03:13:26,295 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:26,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:26,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1307690219, now seen corresponding path program 1 times [2021-12-18 03:13:26,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:26,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632936986] [2021-12-18 03:13:26,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:26,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:26,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 03:13:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:26,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:26,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:13:26,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:26,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632936986] [2021-12-18 03:13:26,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632936986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:26,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:26,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:13:26,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327556005] [2021-12-18 03:13:26,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:26,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:13:26,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:26,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:13:26,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:13:26,482 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) [2021-12-18 03:13:31,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:13:32,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:32,094 INFO L93 Difference]: Finished difference Result 121724 states and 188965 transitions. [2021-12-18 03:13:32,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:13:32,095 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 [2021-12-18 03:13:32,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:32,520 INFO L225 Difference]: With dead ends: 121724 [2021-12-18 03:13:32,521 INFO L226 Difference]: Without dead ends: 82665 [2021-12-18 03:13:32,747 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 [2021-12-18 03:13:32,749 INFO L933 BasicCegarLoop]: 2513 mSDtfsCounter, 2149 mSDsluCounter, 3432 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 641 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 5945 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:32,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2310 Valid, 5945 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 652 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2021-12-18 03:13:32,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82665 states. [2021-12-18 03:13:35,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82665 to 77910. [2021-12-18 03:13:35,407 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) [2021-12-18 03:13:35,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77910 states to 77910 states and 119033 transitions. [2021-12-18 03:13:35,785 INFO L78 Accepts]: Start accepts. Automaton has 77910 states and 119033 transitions. Word has length 36 [2021-12-18 03:13:35,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:35,786 INFO L470 AbstractCegarLoop]: Abstraction has 77910 states and 119033 transitions. [2021-12-18 03:13:35,787 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) [2021-12-18 03:13:35,787 INFO L276 IsEmpty]: Start isEmpty. Operand 77910 states and 119033 transitions. [2021-12-18 03:13:35,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-18 03:13:35,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:35,788 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] [2021-12-18 03:13:35,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 03:13:35,789 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:35,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:35,789 INFO L85 PathProgramCache]: Analyzing trace with hash 978250436, now seen corresponding path program 1 times [2021-12-18 03:13:35,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:35,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149584704] [2021-12-18 03:13:35,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:35,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:36,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 03:13:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:36,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:36,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:13:36,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:36,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149584704] [2021-12-18 03:13:36,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149584704] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:36,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:36,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:13:36,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680146578] [2021-12-18 03:13:36,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:36,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:13:36,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:36,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:13:36,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:13:36,200 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) [2021-12-18 03:13:41,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:13:43,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:43,297 INFO L93 Difference]: Finished difference Result 242556 states and 376357 transitions. [2021-12-18 03:13:43,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:13:43,298 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 [2021-12-18 03:13:43,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:44,619 INFO L225 Difference]: With dead ends: 242556 [2021-12-18 03:13:44,619 INFO L226 Difference]: Without dead ends: 164649 [2021-12-18 03:13:45,000 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 [2021-12-18 03:13:45,001 INFO L933 BasicCegarLoop]: 2594 mSDtfsCounter, 2106 mSDsluCounter, 3515 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 614 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2269 SdHoareTripleChecker+Valid, 6109 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:45,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2269 Valid, 6109 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [614 Valid, 653 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-12-18 03:13:45,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164649 states. [2021-12-18 03:13:49,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164649 to 155158. [2021-12-18 03:13:50,140 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) [2021-12-18 03:13:50,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155158 states to 155158 states and 236889 transitions. [2021-12-18 03:13:51,020 INFO L78 Accepts]: Start accepts. Automaton has 155158 states and 236889 transitions. Word has length 34 [2021-12-18 03:13:51,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:51,021 INFO L470 AbstractCegarLoop]: Abstraction has 155158 states and 236889 transitions. [2021-12-18 03:13:51,021 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) [2021-12-18 03:13:51,021 INFO L276 IsEmpty]: Start isEmpty. Operand 155158 states and 236889 transitions. [2021-12-18 03:13:51,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-18 03:13:51,022 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:51,022 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] [2021-12-18 03:13:51,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 03:13:51,023 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:51,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:51,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1315217039, now seen corresponding path program 1 times [2021-12-18 03:13:51,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:51,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470860976] [2021-12-18 03:13:51,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:51,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:51,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:13:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:51,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:51,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:51,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:13:51,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:51,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470860976] [2021-12-18 03:13:51,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470860976] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:51,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:51,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:13:51,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107994704] [2021-12-18 03:13:51,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:51,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:13:51,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:51,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:13:51,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:13:51,222 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) [2021-12-18 03:14:00,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:14:00,542 INFO L93 Difference]: Finished difference Result 483132 states and 749189 transitions. [2021-12-18 03:14:00,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:14:00,543 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, (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 39 [2021-12-18 03:14:00,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:14:02,799 INFO L225 Difference]: With dead ends: 483132 [2021-12-18 03:14:02,799 INFO L226 Difference]: Without dead ends: 327977 [2021-12-18 03:14:03,647 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 [2021-12-18 03:14:03,648 INFO L933 BasicCegarLoop]: 2868 mSDtfsCounter, 2073 mSDsluCounter, 3650 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2230 SdHoareTripleChecker+Valid, 6518 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-18 03:14:03,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2230 Valid, 6518 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-18 03:14:03,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327977 states. [2021-12-18 03:14:12,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327977 to 309014. [2021-12-18 03:14:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309014 states, 231180 states have (on average 1.476736741932693) internal successors, (341392), 232212 states have internal predecessors, (341392), 65033 states have call successors, (65033), 12801 states have call predecessors, (65033), 12800 states have return successors, (65024), 64512 states have call predecessors, (65024), 65024 states have call successors, (65024)