./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 791161d1 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-?-791161d [2022-07-22 23:23:49,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:23:49,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:23:49,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:23:49,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:23:49,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:23:49,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:23:49,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:23:49,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:23:49,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:23:49,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:23:49,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:23:49,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:23:49,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:23:49,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:23:49,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:23:49,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:23:49,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:23:49,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:23:49,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:23:49,256 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:23:49,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:23:49,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:23:49,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:23:49,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:23:49,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:23:49,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:23:49,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:23:49,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:23:49,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:23:49,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:23:49,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:23:49,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:23:49,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:23:49,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:23:49,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:23:49,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:23:49,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:23:49,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:23:49,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:23:49,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:23:49,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:23:49,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:23:49,299 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:23:49,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:23:49,304 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:23:49,304 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:23:49,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:23:49,305 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:23:49,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:23:49,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:23:49,305 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:23:49,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:23:49,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:23:49,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:23:49,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:23:49,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:23:49,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:23:49,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:23:49,307 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:23:49,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:23:49,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:23:49,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:23:49,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:23:49,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:23:49,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:23:49,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:23:49,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:23:49,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:23:49,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:23:49,309 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:23:49,309 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:23:49,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:23:49,310 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a172742698d01ea3d6a7e277a97e7636a1425e62fd3035feb511b810f7b798f5 [2022-07-22 23:23:49,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:23:49,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:23:49,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:23:49,553 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:23:49,553 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:23:49,554 INFO L432 ainManager$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 [2022-07-22 23:23:49,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d8b27e2/21530a999e504a27ad3e43570261fa75/FLAG237c4a8f3 [2022-07-22 23:23:50,050 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:23:50,050 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 [2022-07-22 23:23:50,072 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d8b27e2/21530a999e504a27ad3e43570261fa75/FLAG237c4a8f3 [2022-07-22 23:23:50,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d8b27e2/21530a999e504a27ad3e43570261fa75 [2022-07-22 23:23:50,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:23:50,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:23:50,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:23:50,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:23:50,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:23:50,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:23:50" (1/1) ... [2022-07-22 23:23:50,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f858c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:50, skipping insertion in model container [2022-07-22 23:23:50,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:23:50" (1/1) ... [2022-07-22 23:23:50,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:23:50,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:23:51,236 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] [2022-07-22 23:23:51,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:23:51,340 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:23:51,589 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] [2022-07-22 23:23:51,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:23:51,730 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:23:51,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:51 WrapperNode [2022-07-22 23:23:51,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:23:51,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:23:51,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:23:51,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:23:51,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:51" (1/1) ... [2022-07-22 23:23:51,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:51" (1/1) ... [2022-07-22 23:23:51,954 INFO L137 Inliner]: procedures = 184, calls = 1940, calls flagged for inlining = 74, calls inlined = 66, statements flattened = 5145 [2022-07-22 23:23:51,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:23:51,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:23:51,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:23:51,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:23:51,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:51" (1/1) ... [2022-07-22 23:23:51,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:51" (1/1) ... [2022-07-22 23:23:51,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:51" (1/1) ... [2022-07-22 23:23:51,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:51" (1/1) ... [2022-07-22 23:23:52,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:51" (1/1) ... [2022-07-22 23:23:52,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:51" (1/1) ... [2022-07-22 23:23:52,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:51" (1/1) ... [2022-07-22 23:23:52,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:23:52,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:23:52,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:23:52,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:23:52,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:51" (1/1) ... [2022-07-22 23:23:52,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:23:52,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:23:52,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 23:23:52,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 23:23:52,227 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2022-07-22 23:23:52,227 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2022-07-22 23:23:52,227 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-22 23:23:52,227 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-22 23:23:52,227 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2022-07-22 23:23:52,227 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2022-07-22 23:23:52,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_asb100_data [2022-07-22 23:23:52,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_asb100_data [2022-07-22 23:23:52,228 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2022-07-22 23:23:52,228 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2022-07-22 23:23:52,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2022-07-22 23:23:52,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2022-07-22 23:23:52,228 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_max [2022-07-22 23:23:52,229 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_max [2022-07-22 23:23:52,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:23:52,229 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_hyst [2022-07-22 23:23:52,229 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_hyst [2022-07-22 23:23:52,229 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2022-07-22 23:23:52,229 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2022-07-22 23:23:52,229 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-07-22 23:23:52,229 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-07-22 23:23:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-07-22 23:23:52,230 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-07-22 23:23:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_hyst [2022-07-22 23:23:52,230 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_hyst [2022-07-22 23:23:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf_temp_from_reg [2022-07-22 23:23:52,230 INFO L138 BoogieDeclarations]: Found implementation of procedure sprintf_temp_from_reg [2022-07-22 23:23:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:23:52,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:23:52,231 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_update_device [2022-07-22 23:23:52,231 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_update_device [2022-07-22 23:23:52,231 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2022-07-22 23:23:52,231 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2022-07-22 23:23:52,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_asb100_data [2022-07-22 23:23:52,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_asb100_data [2022-07-22 23:23:52,231 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2022-07-22 23:23:52,232 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2022-07-22 23:23:52,232 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_div [2022-07-22 23:23:52,232 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_div [2022-07-22 23:23:52,232 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2022-07-22 23:23:52,232 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2022-07-22 23:23:52,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:23:52,232 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-22 23:23:52,232 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-22 23:23:52,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:23:52,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:23:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2022-07-22 23:23:52,233 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2022-07-22 23:23:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_max [2022-07-22 23:23:52,233 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_max [2022-07-22 23:23:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:23:52,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:23:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure IN_TO_REG [2022-07-22 23:23:52,234 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_TO_REG [2022-07-22 23:23:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_min [2022-07-22 23:23:52,234 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_min [2022-07-22 23:23:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_write_value [2022-07-22 23:23:52,235 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_write_value [2022-07-22 23:23:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure TEMP_TO_REG [2022-07-22 23:23:52,236 INFO L138 BoogieDeclarations]: Found implementation of procedure TEMP_TO_REG [2022-07-22 23:23:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:23:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-22 23:23:52,236 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-22 23:23:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2022-07-22 23:23:52,236 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2022-07-22 23:23:52,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:23:52,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:23:52,237 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_min [2022-07-22 23:23:52,237 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_min [2022-07-22 23:23:52,237 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2022-07-22 23:23:52,237 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2022-07-22 23:23:52,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:23:52,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_asb100_data [2022-07-22 23:23:52,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_asb100_data [2022-07-22 23:23:52,238 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2022-07-22 23:23:52,238 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2022-07-22 23:23:52,238 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2022-07-22 23:23:52,238 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2022-07-22 23:23:52,238 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-07-22 23:23:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-07-22 23:23:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-07-22 23:23:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-07-22 23:23:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2022-07-22 23:23:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2022-07-22 23:23:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:23:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-07-22 23:23:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-07-22 23:23:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:23:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure IN_FROM_REG [2022-07-22 23:23:52,240 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_FROM_REG [2022-07-22 23:23:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2022-07-22 23:23:52,240 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2022-07-22 23:23:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:23:52,241 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-07-22 23:23:52,241 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-07-22 23:23:52,241 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_detect [2022-07-22 23:23:52,241 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_detect [2022-07-22 23:23:52,241 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_read_value [2022-07-22 23:23:52,241 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_read_value [2022-07-22 23:23:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-22 23:23:52,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-22 23:23:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2022-07-22 23:23:52,242 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2022-07-22 23:23:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-22 23:23:52,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-22 23:23:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2022-07-22 23:23:52,243 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2022-07-22 23:23:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:23:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-07-22 23:23:52,243 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-07-22 23:23:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:23:52,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:23:52,244 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-22 23:23:52,244 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-22 23:23:52,805 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:23:52,808 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:23:58,176 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:23:58,212 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:23:58,212 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 23:23:58,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:23:58 BoogieIcfgContainer [2022-07-22 23:23:58,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:23:58,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:23:58,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:23:58,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:23:58,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:23:50" (1/3) ... [2022-07-22 23:23:58,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18129f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:23:58, skipping insertion in model container [2022-07-22 23:23:58,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:51" (2/3) ... [2022-07-22 23:23:58,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18129f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:23:58, skipping insertion in model container [2022-07-22 23:23:58,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:23:58" (3/3) ... [2022-07-22 23:23:58,245 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2022-07-22 23:23:58,258 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:23:58,275 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:23:58,374 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:23:58,395 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5d019991, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@32666325 [2022-07-22 23:23:58,396 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:23:58,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 1312 states, 982 states have (on average 1.490835030549898) internal successors, (1464), 996 states have internal predecessors, (1464), 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) [2022-07-22 23:23:58,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-22 23:23:58,433 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:23:58,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:23:58,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:23:58,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:23:58,443 INFO L85 PathProgramCache]: Analyzing trace with hash -660898654, now seen corresponding path program 1 times [2022-07-22 23:23:58,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:23:58,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737437584] [2022-07-22 23:23:58,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:23:58,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:23:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:59,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:23:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:59,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:23:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:59,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:23:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:59,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:23:59,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:23:59,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737437584] [2022-07-22 23:23:59,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737437584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:23:59,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:23:59,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:23:59,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455748631] [2022-07-22 23:23:59,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:23:59,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:23:59,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:23:59,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:23:59,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:23:59,227 INFO L87 Difference]: Start difference. First operand has 1312 states, 982 states have (on average 1.490835030549898) internal successors, (1464), 996 states have internal predecessors, (1464), 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 6.0) 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) [2022-07-22 23:24:02,855 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 [] [2022-07-22 23:24:03,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:03,371 INFO L93 Difference]: Finished difference Result 4080 states and 6739 transitions. [2022-07-22 23:24:03,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:03,374 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 [2022-07-22 23:24:03,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:03,395 INFO L225 Difference]: With dead ends: 4080 [2022-07-22 23:24:03,396 INFO L226 Difference]: Without dead ends: 2763 [2022-07-22 23:24:03,410 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:24:03,412 INFO L413 NwaCegarLoop]: 2332 mSDtfsCounter, 2309 mSDsluCounter, 3316 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 686 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2476 SdHoareTripleChecker+Valid, 5648 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:03,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2476 Valid, 5648 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 767 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-07-22 23:24:03,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2022-07-22 23:24:03,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2580. [2022-07-22 23:24:03,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 1936 states have (on average 1.4834710743801653) internal successors, (2872), 1952 states have internal predecessors, (2872), 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) [2022-07-22 23:24:03,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3949 transitions. [2022-07-22 23:24:03,603 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3949 transitions. Word has length 34 [2022-07-22 23:24:03,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:03,603 INFO L495 AbstractCegarLoop]: Abstraction has 2580 states and 3949 transitions. [2022-07-22 23:24:03,603 INFO L496 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) [2022-07-22 23:24:03,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3949 transitions. [2022-07-22 23:24:03,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-22 23:24:03,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:03,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:24:03,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:24:03,606 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:03,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:03,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1304109229, now seen corresponding path program 1 times [2022-07-22 23:24:03,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:03,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087162374] [2022-07-22 23:24:03,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:03,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:03,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:24:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:03,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:03,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:03,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:03,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087162374] [2022-07-22 23:24:03,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087162374] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:03,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:03,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:03,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372241609] [2022-07-22 23:24:03,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:03,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:03,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:03,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:03,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:03,808 INFO L87 Difference]: Start difference. First operand 2580 states and 3949 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) [2022-07-22 23:24:05,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:05,404 INFO L93 Difference]: Finished difference Result 8042 states and 12491 transitions. [2022-07-22 23:24:05,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:05,405 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 [2022-07-22 23:24:05,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:05,429 INFO L225 Difference]: With dead ends: 8042 [2022-07-22 23:24:05,429 INFO L226 Difference]: Without dead ends: 5465 [2022-07-22 23:24:05,442 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:24:05,443 INFO L413 NwaCegarLoop]: 2649 mSDtfsCounter, 2156 mSDsluCounter, 3432 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 6081 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:05,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2309 Valid, 6081 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 23:24:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5465 states. [2022-07-22 23:24:05,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5465 to 5118. [2022-07-22 23:24:05,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5118 states, 3844 states have (on average 1.4828303850156088) internal successors, (5700), 3868 states have internal predecessors, (5700), 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) [2022-07-22 23:24:05,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5118 states to 5118 states and 7837 transitions. [2022-07-22 23:24:05,662 INFO L78 Accepts]: Start accepts. Automaton has 5118 states and 7837 transitions. Word has length 35 [2022-07-22 23:24:05,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:05,663 INFO L495 AbstractCegarLoop]: Abstraction has 5118 states and 7837 transitions. [2022-07-22 23:24:05,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (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) [2022-07-22 23:24:05,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5118 states and 7837 transitions. [2022-07-22 23:24:05,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-22 23:24:05,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:05,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:24:05,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:24:05,667 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:05,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:05,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1015238842, now seen corresponding path program 1 times [2022-07-22 23:24:05,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:05,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594120855] [2022-07-22 23:24:05,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:05,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:05,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 23:24:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:05,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:05,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:05,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:05,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594120855] [2022-07-22 23:24:05,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594120855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:05,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:05,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:05,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837647749] [2022-07-22 23:24:05,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:05,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:05,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:05,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:05,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:05,984 INFO L87 Difference]: Start difference. First operand 5118 states and 7837 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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) [2022-07-22 23:24:07,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:07,894 INFO L93 Difference]: Finished difference Result 15980 states and 24833 transitions. [2022-07-22 23:24:07,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:07,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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 45 [2022-07-22 23:24:07,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:08,013 INFO L225 Difference]: With dead ends: 15980 [2022-07-22 23:24:08,013 INFO L226 Difference]: Without dead ends: 10865 [2022-07-22 23:24:08,032 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:24:08,034 INFO L413 NwaCegarLoop]: 2666 mSDtfsCounter, 2174 mSDsluCounter, 3537 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2318 SdHoareTripleChecker+Valid, 6203 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:08,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2318 Valid, 6203 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 23:24:08,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10865 states. [2022-07-22 23:24:08,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10865 to 10190. [2022-07-22 23:24:08,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10190 states, 7656 states have (on average 1.4822361546499478) internal successors, (11348), 7696 states have internal predecessors, (11348), 2133 states have call successors, (2133), 401 states have call predecessors, (2133), 400 states have return successors, (2124), 2108 states have call predecessors, (2124), 2124 states have call successors, (2124) [2022-07-22 23:24:08,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10190 states to 10190 states and 15605 transitions. [2022-07-22 23:24:08,319 INFO L78 Accepts]: Start accepts. Automaton has 10190 states and 15605 transitions. Word has length 45 [2022-07-22 23:24:08,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:08,320 INFO L495 AbstractCegarLoop]: Abstraction has 10190 states and 15605 transitions. [2022-07-22 23:24:08,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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) [2022-07-22 23:24:08,320 INFO L276 IsEmpty]: Start isEmpty. Operand 10190 states and 15605 transitions. [2022-07-22 23:24:08,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-22 23:24:08,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:08,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:24:08,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 23:24:08,322 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:08,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:08,322 INFO L85 PathProgramCache]: Analyzing trace with hash -81678797, now seen corresponding path program 1 times [2022-07-22 23:24:08,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:08,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525547166] [2022-07-22 23:24:08,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:08,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:08,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:24:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:08,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:08,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:08,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:08,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:08,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525547166] [2022-07-22 23:24:08,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525547166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:08,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:08,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:08,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207136013] [2022-07-22 23:24:08,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:08,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:08,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:08,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:08,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:08,512 INFO L87 Difference]: Start difference. First operand 10190 states and 15605 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) [2022-07-22 23:24:10,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:10,531 INFO L93 Difference]: Finished difference Result 31796 states and 49409 transitions. [2022-07-22 23:24:10,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:10,532 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 [2022-07-22 23:24:10,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:10,634 INFO L225 Difference]: With dead ends: 31796 [2022-07-22 23:24:10,634 INFO L226 Difference]: Without dead ends: 21609 [2022-07-22 23:24:10,681 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:24:10,682 INFO L413 NwaCegarLoop]: 2496 mSDtfsCounter, 2239 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2409 SdHoareTripleChecker+Valid, 5952 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:10,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2409 Valid, 5952 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 23:24:10,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21609 states. [2022-07-22 23:24:11,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21609 to 20278. [2022-07-22 23:24:11,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20278 states, 15236 states have (on average 1.4812286689419796) internal successors, (22568), 15308 states have internal predecessors, (22568), 4241 states have call successors, (4241), 801 states have call predecessors, (4241), 800 states have return successors, (4232), 4200 states have call predecessors, (4232), 4232 states have call successors, (4232) [2022-07-22 23:24:11,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20278 states to 20278 states and 31041 transitions. [2022-07-22 23:24:11,360 INFO L78 Accepts]: Start accepts. Automaton has 20278 states and 31041 transitions. Word has length 38 [2022-07-22 23:24:11,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:11,360 INFO L495 AbstractCegarLoop]: Abstraction has 20278 states and 31041 transitions. [2022-07-22 23:24:11,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (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) [2022-07-22 23:24:11,361 INFO L276 IsEmpty]: Start isEmpty. Operand 20278 states and 31041 transitions. [2022-07-22 23:24:11,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-22 23:24:11,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:11,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:24:11,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:24:11,364 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:11,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:11,365 INFO L85 PathProgramCache]: Analyzing trace with hash 432666737, now seen corresponding path program 1 times [2022-07-22 23:24:11,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:11,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513532025] [2022-07-22 23:24:11,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:11,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:11,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:24:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:11,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:11,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:11,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:11,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513532025] [2022-07-22 23:24:11,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513532025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:11,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:11,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:11,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079430299] [2022-07-22 23:24:11,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:11,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:11,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:11,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:11,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:11,580 INFO L87 Difference]: Start difference. First operand 20278 states and 31041 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) [2022-07-22 23:24:13,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:13,737 INFO L93 Difference]: Finished difference Result 63052 states and 97917 transitions. [2022-07-22 23:24:13,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:13,738 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 [2022-07-22 23:24:13,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:14,149 INFO L225 Difference]: With dead ends: 63052 [2022-07-22 23:24:14,149 INFO L226 Difference]: Without dead ends: 42777 [2022-07-22 23:24:14,209 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:24:14,210 INFO L413 NwaCegarLoop]: 2589 mSDtfsCounter, 2195 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2354 SdHoareTripleChecker+Valid, 6045 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:14,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2354 Valid, 6045 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [623 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 23:24:14,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42777 states. [2022-07-22 23:24:15,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42777 to 40134. [2022-07-22 23:24:15,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40134 states, 30188 states have (on average 1.4813833311249502) internal successors, (44720), 30324 states have internal predecessors, (44720), 8345 states have call successors, (8345), 1601 states have call predecessors, (8345), 1600 states have return successors, (8336), 8272 states have call predecessors, (8336), 8336 states have call successors, (8336) [2022-07-22 23:24:15,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40134 states to 40134 states and 61401 transitions. [2022-07-22 23:24:15,897 INFO L78 Accepts]: Start accepts. Automaton has 40134 states and 61401 transitions. Word has length 39 [2022-07-22 23:24:15,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:15,898 INFO L495 AbstractCegarLoop]: Abstraction has 40134 states and 61401 transitions. [2022-07-22 23:24:15,899 INFO L496 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) [2022-07-22 23:24:15,899 INFO L276 IsEmpty]: Start isEmpty. Operand 40134 states and 61401 transitions. [2022-07-22 23:24:15,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-22 23:24:15,900 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:15,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:24:15,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:24:15,900 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:15,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:15,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1515914313, now seen corresponding path program 1 times [2022-07-22 23:24:15,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:15,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048712961] [2022-07-22 23:24:15,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:15,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:16,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 23:24:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:16,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:16,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:16,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:16,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048712961] [2022-07-22 23:24:16,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048712961] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:16,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:16,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:16,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192417015] [2022-07-22 23:24:16,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:16,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:16,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:16,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:16,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:16,308 INFO L87 Difference]: Start difference. First operand 40134 states and 61401 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) [2022-07-22 23:24:19,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:19,789 INFO L93 Difference]: Finished difference Result 125452 states and 194757 transitions. [2022-07-22 23:24:19,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:19,790 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 [2022-07-22 23:24:19,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:20,275 INFO L225 Difference]: With dead ends: 125452 [2022-07-22 23:24:20,276 INFO L226 Difference]: Without dead ends: 85321 [2022-07-22 23:24:20,465 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:24:20,466 INFO L413 NwaCegarLoop]: 2559 mSDtfsCounter, 2281 mSDsluCounter, 3566 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2454 SdHoareTripleChecker+Valid, 6125 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:20,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2454 Valid, 6125 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 23:24:20,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85321 states. [2022-07-22 23:24:23,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85321 to 80054. [2022-07-22 23:24:23,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80054 states, 60204 states have (on average 1.480566075343831) internal successors, (89136), 60468 states have internal predecessors, (89136), 16649 states have call successors, (16649), 3201 states have call predecessors, (16649), 3200 states have return successors, (16640), 16512 states have call predecessors, (16640), 16640 states have call successors, (16640) [2022-07-22 23:24:23,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80054 states to 80054 states and 122425 transitions. [2022-07-22 23:24:23,758 INFO L78 Accepts]: Start accepts. Automaton has 80054 states and 122425 transitions. Word has length 36 [2022-07-22 23:24:23,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:23,760 INFO L495 AbstractCegarLoop]: Abstraction has 80054 states and 122425 transitions. [2022-07-22 23:24:23,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (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) [2022-07-22 23:24:23,761 INFO L276 IsEmpty]: Start isEmpty. Operand 80054 states and 122425 transitions. [2022-07-22 23:24:23,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-22 23:24:23,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:23,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:24:23,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:24:23,768 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:23,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:23,768 INFO L85 PathProgramCache]: Analyzing trace with hash -468435525, now seen corresponding path program 1 times [2022-07-22 23:24:23,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:23,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639103092] [2022-07-22 23:24:23,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:23,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:23,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:24:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:23,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:23,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:24,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:24,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639103092] [2022-07-22 23:24:24,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639103092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:24,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:24,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:24,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773131970] [2022-07-22 23:24:24,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:24,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:24,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:24,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:24,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:24,012 INFO L87 Difference]: Start difference. First operand 80054 states and 122425 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) [2022-07-22 23:24:29,492 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 [] [2022-07-22 23:24:31,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:31,653 INFO L93 Difference]: Finished difference Result 250012 states and 387941 transitions. [2022-07-22 23:24:31,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:31,654 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 [2022-07-22 23:24:31,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:32,894 INFO L225 Difference]: With dead ends: 250012 [2022-07-22 23:24:32,895 INFO L226 Difference]: Without dead ends: 169961 [2022-07-22 23:24:33,230 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:24:33,231 INFO L413 NwaCegarLoop]: 2743 mSDtfsCounter, 2147 mSDsluCounter, 3507 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 608 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 6250 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:33,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 6250 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 774 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-07-22 23:24:33,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169961 states. [2022-07-22 23:24:37,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169961 to 159446. [2022-07-22 23:24:37,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159446 states, 119884 states have (on average 1.479430115778586) internal successors, (177360), 120404 states have internal predecessors, (177360), 33161 states have call successors, (33161), 6401 states have call predecessors, (33161), 6400 states have return successors, (33152), 32896 states have call predecessors, (33152), 33152 states have call successors, (33152) [2022-07-22 23:24:38,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159446 states to 159446 states and 243673 transitions. [2022-07-22 23:24:38,748 INFO L78 Accepts]: Start accepts. Automaton has 159446 states and 243673 transitions. Word has length 39 [2022-07-22 23:24:38,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:38,749 INFO L495 AbstractCegarLoop]: Abstraction has 159446 states and 243673 transitions. [2022-07-22 23:24:38,749 INFO L496 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, (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) [2022-07-22 23:24:38,749 INFO L276 IsEmpty]: Start isEmpty. Operand 159446 states and 243673 transitions. [2022-07-22 23:24:38,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-22 23:24:38,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:38,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:24:38,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 23:24:38,751 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:38,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:38,751 INFO L85 PathProgramCache]: Analyzing trace with hash -565338391, now seen corresponding path program 1 times [2022-07-22 23:24:38,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:38,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586331892] [2022-07-22 23:24:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:38,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:38,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 23:24:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:38,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:38,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:38,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:38,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586331892] [2022-07-22 23:24:38,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586331892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:38,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:38,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:38,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550372375] [2022-07-22 23:24:38,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:38,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:38,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:38,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:38,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:38,940 INFO L87 Difference]: Start difference. First operand 159446 states and 243673 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) [2022-07-22 23:24:47,035 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 [] [2022-07-22 23:24:51,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:51,087 INFO L93 Difference]: Finished difference Result 497788 states and 772229 transitions. [2022-07-22 23:24:51,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:51,088 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 [2022-07-22 23:24:51,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:53,196 INFO L225 Difference]: With dead ends: 497788 [2022-07-22 23:24:53,197 INFO L226 Difference]: Without dead ends: 338345 [2022-07-22 23:24:54,396 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:24:54,397 INFO L413 NwaCegarLoop]: 2634 mSDtfsCounter, 2224 mSDsluCounter, 3554 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 615 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2398 SdHoareTripleChecker+Valid, 6188 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 615 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:54,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2398 Valid, 6188 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [615 Valid, 776 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-07-22 23:24:54,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338345 states. [2022-07-22 23:25:03,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338345 to 317206. [2022-07-22 23:25:03,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317206 states, 238476 states have (on average 1.4787903185226186) internal successors, (352656), 239508 states have internal predecessors, (352656), 66057 states have call successors, (66057), 12801 states have call predecessors, (66057), 12672 states have return successors, (66048), 65408 states have call predecessors, (66048), 66048 states have call successors, (66048) [2022-07-22 23:25:06,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317206 states to 317206 states and 484761 transitions. [2022-07-22 23:25:06,360 INFO L78 Accepts]: Start accepts. Automaton has 317206 states and 484761 transitions. Word has length 36 [2022-07-22 23:25:06,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:06,361 INFO L495 AbstractCegarLoop]: Abstraction has 317206 states and 484761 transitions. [2022-07-22 23:25:06,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (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) [2022-07-22 23:25:06,361 INFO L276 IsEmpty]: Start isEmpty. Operand 317206 states and 484761 transitions. [2022-07-22 23:25:06,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 23:25:06,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:06,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:25:06,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 23:25:06,363 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:06,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:06,363 INFO L85 PathProgramCache]: Analyzing trace with hash 861724364, now seen corresponding path program 1 times [2022-07-22 23:25:06,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:06,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011642881] [2022-07-22 23:25:06,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:06,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat