./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--max16065.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8 --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 1ad6d1ed8310d8e3264189ac87472d58c77647a0c63d75779b5974e889987542 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 14:39:46,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:39:46,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:39:46,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:39:46,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:39:46,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:39:46,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:39:46,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:39:46,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:39:46,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:39:46,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:39:46,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:39:46,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:39:46,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:39:46,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:39:46,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:39:46,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:39:46,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:39:46,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:39:46,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:39:46,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:39:46,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:39:46,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:39:46,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:39:46,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:39:46,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:39:46,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:39:46,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:39:46,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:39:46,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:39:46,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:39:46,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:39:46,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:39:46,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:39:46,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:39:46,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:39:46,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:39:46,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:39:46,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:39:46,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:39:46,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:39:46,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 14:39:46,288 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:39:46,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:39:46,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:39:46,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:39:46,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:39:46,289 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:39:46,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:39:46,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:39:46,290 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:39:46,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:39:46,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:39:46,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:39:46,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:39:46,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:39:46,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:39:46,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:39:46,291 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:39:46,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:39:46,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:39:46,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:39:46,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:39:46,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:39:46,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:39:46,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:39:46,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:39:46,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:39:46,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:39:46,292 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:39:46,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:39:46,293 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:39:46,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:39:46,293 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:39:46,293 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ad6d1ed8310d8e3264189ac87472d58c77647a0c63d75779b5974e889987542 [2022-12-13 14:39:46,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:39:46,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:39:46,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:39:46,491 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:39:46,491 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:39:46,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2022-12-13 14:39:49,050 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:39:49,337 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:39:49,337 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2022-12-13 14:39:49,357 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/data/9eacd97e6/089508eed4ea46c0948417ea117f68c0/FLAG3c4c324c2 [2022-12-13 14:39:49,646 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/data/9eacd97e6/089508eed4ea46c0948417ea117f68c0 [2022-12-13 14:39:49,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:39:49,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:39:49,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:39:49,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:39:49,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:39:49,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:39:49" (1/1) ... [2022-12-13 14:39:49,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9a5255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:49, skipping insertion in model container [2022-12-13 14:39:49,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:39:49" (1/1) ... [2022-12-13 14:39:49,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:39:49,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:39:49,949 WARN L623 FunctionHandler]: Unknown extern function kstrtoull [2022-12-13 14:39:50,035 WARN L623 FunctionHandler]: Unknown extern function i2c_smbus_read_word_data [2022-12-13 14:39:50,039 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-12-13 14:39:50,043 WARN L623 FunctionHandler]: Unknown extern function dev_set_drvdata [2022-12-13 14:39:50,082 WARN L623 FunctionHandler]: Unknown extern function i2c_smbus_read_byte_data [2022-12-13 14:39:50,083 WARN L623 FunctionHandler]: Unknown extern function i2c_smbus_read_byte_data [2022-12-13 14:39:50,089 WARN L623 FunctionHandler]: Unknown extern function i2c_smbus_write_byte_data [2022-12-13 14:39:50,105 WARN L623 FunctionHandler]: Unknown extern function i2c_smbus_write_byte_data [2022-12-13 14:39:50,189 WARN L623 FunctionHandler]: Unknown extern function sysfs_remove_group [2022-12-13 14:39:50,189 WARN L623 FunctionHandler]: Unknown extern function sysfs_remove_group [2022-12-13 14:39:50,190 WARN L623 FunctionHandler]: Unknown extern function sysfs_remove_group [2022-12-13 14:39:50,190 WARN L623 FunctionHandler]: Unknown extern function sysfs_remove_group [2022-12-13 14:39:50,195 WARN L623 FunctionHandler]: Unknown extern function devm_kzalloc [2022-12-13 14:39:50,196 WARN L623 FunctionHandler]: Unknown extern function __mutex_init [2022-12-13 14:39:50,199 WARN L623 FunctionHandler]: Unknown extern function i2c_smbus_read_byte_data [2022-12-13 14:39:50,200 WARN L623 FunctionHandler]: Unknown extern function i2c_smbus_read_byte_data [2022-12-13 14:39:50,202 WARN L623 FunctionHandler]: Unknown extern function i2c_smbus_read_byte_data [2022-12-13 14:39:50,205 WARN L623 FunctionHandler]: Unknown extern function sysfs_create_file [2022-12-13 14:39:50,207 WARN L623 FunctionHandler]: Unknown extern function sysfs_create_file [2022-12-13 14:39:50,208 WARN L623 FunctionHandler]: Unknown extern function i2c_smbus_read_byte_data [2022-12-13 14:39:50,209 WARN L623 FunctionHandler]: Unknown extern function sysfs_create_group [2022-12-13 14:39:50,211 WARN L623 FunctionHandler]: Unknown extern function hwmon_device_register [2022-12-13 14:39:50,215 WARN L623 FunctionHandler]: Unknown extern function hwmon_device_unregister [2022-12-13 14:39:50,223 WARN L623 FunctionHandler]: Unknown extern function i2c_register_driver [2022-12-13 14:39:50,226 WARN L623 FunctionHandler]: Unknown extern function i2c_del_driver [2022-12-13 14:39:50,307 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-13 14:39:50,307 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-13 14:39:50,308 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-13 14:39:50,308 WARN L623 FunctionHandler]: Unknown extern function mutex_trylock [2022-12-13 14:39:50,309 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-13 14:39:50,309 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-13 14:39:50,310 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-13 14:39:50,310 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-13 14:39:50,311 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-13 14:39:50,311 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-13 14:39:50,311 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-13 14:39:50,314 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i[168201,168214] [2022-12-13 14:39:50,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:39:50,449 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:39:50,500 WARN L623 FunctionHandler]: Unknown extern function kstrtoull [2022-12-13 14:39:50,504 WARN L623 FunctionHandler]: Unknown extern function i2c_smbus_read_word_data [2022-12-13 14:39:50,504 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-12-13 14:39:50,505 WARN L623 FunctionHandler]: Unknown extern function dev_set_drvdata [2022-12-13 14:39:50,512 WARN L623 FunctionHandler]: Unknown extern function i2c_smbus_read_byte_data [2022-12-13 14:39:50,512 WARN L623 FunctionHandler]: Unknown extern function i2c_smbus_read_byte_data [2022-12-13 14:39:50,514 WARN L623 FunctionHandler]: Unknown extern function i2c_smbus_write_byte_data [2022-12-13 14:39:50,519 WARN L623 FunctionHandler]: Unknown extern function i2c_smbus_write_byte_data [2022-12-13 14:39:50,552 WARN L623 FunctionHandler]: Unknown extern function sysfs_remove_group [2022-12-13 14:39:50,552 WARN L623 FunctionHandler]: Unknown extern function sysfs_remove_group [2022-12-13 14:39:50,553 WARN L623 FunctionHandler]: Unknown extern function sysfs_remove_group [2022-12-13 14:39:50,553 WARN L623 FunctionHandler]: Unknown extern function sysfs_remove_group [2022-12-13 14:39:50,555 WARN L623 FunctionHandler]: Unknown extern function devm_kzalloc [2022-12-13 14:39:50,556 WARN L623 FunctionHandler]: Unknown extern function __mutex_init [2022-12-13 14:39:50,557 WARN L623 FunctionHandler]: Unknown extern function i2c_smbus_read_byte_data [2022-12-13 14:39:50,557 WARN L623 FunctionHandler]: Unknown extern function i2c_smbus_read_byte_data [2022-12-13 14:39:50,558 WARN L623 FunctionHandler]: Unknown extern function i2c_smbus_read_byte_data [2022-12-13 14:39:50,559 WARN L623 FunctionHandler]: Unknown extern function sysfs_create_file [2022-12-13 14:39:50,560 WARN L623 FunctionHandler]: Unknown extern function sysfs_create_file [2022-12-13 14:39:50,561 WARN L623 FunctionHandler]: Unknown extern function i2c_smbus_read_byte_data [2022-12-13 14:39:50,562 WARN L623 FunctionHandler]: Unknown extern function sysfs_create_group [2022-12-13 14:39:50,562 WARN L623 FunctionHandler]: Unknown extern function hwmon_device_register [2022-12-13 14:39:50,564 WARN L623 FunctionHandler]: Unknown extern function hwmon_device_unregister [2022-12-13 14:39:50,567 WARN L623 FunctionHandler]: Unknown extern function i2c_register_driver [2022-12-13 14:39:50,567 WARN L623 FunctionHandler]: Unknown extern function i2c_del_driver [2022-12-13 14:39:50,627 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-13 14:39:50,628 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-13 14:39:50,628 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-13 14:39:50,628 WARN L623 FunctionHandler]: Unknown extern function mutex_trylock [2022-12-13 14:39:50,629 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-13 14:39:50,629 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-13 14:39:50,629 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-13 14:39:50,630 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-13 14:39:50,630 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-13 14:39:50,630 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-13 14:39:50,630 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-13 14:39:50,631 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i[168201,168214] [2022-12-13 14:39:50,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:39:50,765 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:39:50,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:50 WrapperNode [2022-12-13 14:39:50,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:39:50,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:39:50,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:39:50,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:39:50,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:50" (1/1) ... [2022-12-13 14:39:50,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:50" (1/1) ... [2022-12-13 14:39:50,925 INFO L138 Inliner]: procedures = 115, calls = 2153, calls flagged for inlining = 45, calls inlined = 37, statements flattened = 5373 [2022-12-13 14:39:50,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:39:50,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:39:50,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:39:50,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:39:50,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:50" (1/1) ... [2022-12-13 14:39:50,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:50" (1/1) ... [2022-12-13 14:39:50,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:50" (1/1) ... [2022-12-13 14:39:50,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:50" (1/1) ... [2022-12-13 14:39:51,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:50" (1/1) ... [2022-12-13 14:39:51,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:50" (1/1) ... [2022-12-13 14:39:51,049 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:50" (1/1) ... [2022-12-13 14:39:51,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:50" (1/1) ... [2022-12-13 14:39:51,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:39:51,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:39:51,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:39:51,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:39:51,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:50" (1/1) ... [2022-12-13 14:39:51,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:39:51,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:39:51,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:39:51,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:39:51,137 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_set_limit [2022-12-13 14:39:51,138 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_set_limit [2022-12-13 14:39:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 14:39:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-12-13 14:39:51,138 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-12-13 14:39:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-12-13 14:39:51,138 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-12-13 14:39:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_limit [2022-12-13 14:39:51,138 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_limit [2022-12-13 14:39:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_update_device [2022-12-13 14:39:51,138 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_update_device [2022-12-13 14:39:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_input [2022-12-13 14:39:51,139 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_input [2022-12-13 14:39:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_read_adc [2022-12-13 14:39:51,139 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_read_adc [2022-12-13 14:39:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-13 14:39:51,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-13 14:39:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_max16065_data [2022-12-13 14:39:51,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_max16065_data [2022-12-13 14:39:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_alarm [2022-12-13 14:39:51,139 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_alarm [2022-12-13 14:39:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure LIMIT_TO_MV [2022-12-13 14:39:51,140 INFO L138 BoogieDeclarations]: Found implementation of procedure LIMIT_TO_MV [2022-12-13 14:39:51,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:39:51,140 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-12-13 14:39:51,140 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-12-13 14:39:51,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-12-13 14:39:51,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-12-13 14:39:51,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-12-13 14:39:51,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-12-13 14:39:51,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 14:39:51,140 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-12-13 14:39:51,141 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-12-13 14:39:51,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:39:51,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 14:39:51,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:39:51,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2022-12-13 14:39:51,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2022-12-13 14:39:51,141 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-12-13 14:39:51,141 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-12-13 14:39:51,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 14:39:51,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:39:51,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 14:39:51,142 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_cleanup [2022-12-13 14:39:51,142 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_cleanup [2022-12-13 14:39:51,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:39:51,142 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-12-13 14:39:51,142 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-12-13 14:39:51,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:39:51,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:39:51,142 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_file [2022-12-13 14:39:51,142 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_file [2022-12-13 14:39:51,142 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-12-13 14:39:51,143 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-12-13 14:39:51,580 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:39:51,582 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:39:55,338 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:39:55,351 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:39:55,351 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 14:39:55,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:39:55 BoogieIcfgContainer [2022-12-13 14:39:55,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:39:55,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:39:55,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:39:55,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:39:55,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:39:49" (1/3) ... [2022-12-13 14:39:55,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d76e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:39:55, skipping insertion in model container [2022-12-13 14:39:55,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:39:50" (2/3) ... [2022-12-13 14:39:55,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d76e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:39:55, skipping insertion in model container [2022-12-13 14:39:55,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:39:55" (3/3) ... [2022-12-13 14:39:55,361 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2022-12-13 14:39:55,374 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:39:55,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 14:39:55,434 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:39:55,440 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@705592d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:39:55,440 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 14:39:55,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 1103 states, 898 states have (on average 1.6057906458797326) internal successors, (1442), 905 states have internal predecessors, (1442), 182 states have call successors, (182), 21 states have call predecessors, (182), 21 states have return successors, (182), 182 states have call predecessors, (182), 182 states have call successors, (182) [2022-12-13 14:39:55,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-13 14:39:55,459 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:39:55,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:39:55,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:39:55,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:39:55,463 INFO L85 PathProgramCache]: Analyzing trace with hash 391711024, now seen corresponding path program 1 times [2022-12-13 14:39:55,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:39:55,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182819741] [2022-12-13 14:39:55,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:39:55,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:39:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:39:56,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 14:39:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:39:56,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:39:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:39:56,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:39:56,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:39:56,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182819741] [2022-12-13 14:39:56,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182819741] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:39:56,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:39:56,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:39:56,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040295511] [2022-12-13 14:39:56,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:39:56,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:39:56,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:39:56,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:39:56,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:39:56,249 INFO L87 Difference]: Start difference. First operand has 1103 states, 898 states have (on average 1.6057906458797326) internal successors, (1442), 905 states have internal predecessors, (1442), 182 states have call successors, (182), 21 states have call predecessors, (182), 21 states have return successors, (182), 182 states have call predecessors, (182), 182 states have call successors, (182) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:39:57,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:39:57,644 INFO L93 Difference]: Finished difference Result 3409 states and 5992 transitions. [2022-12-13 14:39:57,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:39:57,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-12-13 14:39:57,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:39:57,673 INFO L225 Difference]: With dead ends: 3409 [2022-12-13 14:39:57,674 INFO L226 Difference]: Without dead ends: 2301 [2022-12-13 14:39:57,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:39:57,689 INFO L413 NwaCegarLoop]: 1979 mSDtfsCounter, 1990 mSDsluCounter, 3296 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2076 SdHoareTripleChecker+Valid, 5275 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:39:57,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2076 Valid, 5275 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 14:39:57,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2022-12-13 14:39:57,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 2170. [2022-12-13 14:39:57,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2170 states, 1772 states have (on average 1.6066591422121896) internal successors, (2847), 1777 states have internal predecessors, (2847), 357 states have call successors, (357), 41 states have call predecessors, (357), 40 states have return successors, (351), 351 states have call predecessors, (351), 351 states have call successors, (351) [2022-12-13 14:39:57,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2170 states to 2170 states and 3555 transitions. [2022-12-13 14:39:57,846 INFO L78 Accepts]: Start accepts. Automaton has 2170 states and 3555 transitions. Word has length 33 [2022-12-13 14:39:57,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:39:57,846 INFO L495 AbstractCegarLoop]: Abstraction has 2170 states and 3555 transitions. [2022-12-13 14:39:57,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:39:57,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2170 states and 3555 transitions. [2022-12-13 14:39:57,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 14:39:57,849 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:39:57,849 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] [2022-12-13 14:39:57,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:39:57,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:39:57,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:39:57,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1264101551, now seen corresponding path program 1 times [2022-12-13 14:39:57,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:39:57,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067705912] [2022-12-13 14:39:57,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:39:57,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:39:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:39:58,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 14:39:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:39:58,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:39:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:39:58,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:39:58,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:39:58,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067705912] [2022-12-13 14:39:58,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067705912] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:39:58,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:39:58,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:39:58,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91598204] [2022-12-13 14:39:58,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:39:58,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:39:58,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:39:58,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:39:58,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:39:58,181 INFO L87 Difference]: Start difference. First operand 2170 states and 3555 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:39:59,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:39:59,454 INFO L93 Difference]: Finished difference Result 6724 states and 11271 transitions. [2022-12-13 14:39:59,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:39:59,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2022-12-13 14:39:59,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:39:59,475 INFO L225 Difference]: With dead ends: 6724 [2022-12-13 14:39:59,475 INFO L226 Difference]: Without dead ends: 4557 [2022-12-13 14:39:59,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:39:59,483 INFO L413 NwaCegarLoop]: 1960 mSDtfsCounter, 1963 mSDsluCounter, 3238 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2081 SdHoareTripleChecker+Valid, 5198 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:39:59,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2081 Valid, 5198 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 14:39:59,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4557 states. [2022-12-13 14:39:59,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4557 to 4310. [2022-12-13 14:39:59,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 3523 states have (on average 1.6071529946068692) internal successors, (5662), 3528 states have internal predecessors, (5662), 706 states have call successors, (706), 81 states have call predecessors, (706), 80 states have return successors, (700), 700 states have call predecessors, (700), 700 states have call successors, (700) [2022-12-13 14:39:59,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 7068 transitions. [2022-12-13 14:39:59,635 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 7068 transitions. Word has length 37 [2022-12-13 14:39:59,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:39:59,636 INFO L495 AbstractCegarLoop]: Abstraction has 4310 states and 7068 transitions. [2022-12-13 14:39:59,636 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:39:59,636 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 7068 transitions. [2022-12-13 14:39:59,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-13 14:39:59,637 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:39:59,637 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] [2022-12-13 14:39:59,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:39:59,637 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:39:59,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:39:59,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1423890463, now seen corresponding path program 1 times [2022-12-13 14:39:59,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:39:59,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812435007] [2022-12-13 14:39:59,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:39:59,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:39:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:00,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 14:40:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:00,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:40:00,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:00,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812435007] [2022-12-13 14:40:00,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812435007] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:00,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:40:00,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:40:00,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882893298] [2022-12-13 14:40:00,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:00,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:00,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:00,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:00,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:40:00,067 INFO L87 Difference]: Start difference. First operand 4310 states and 7068 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:40:01,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:01,354 INFO L93 Difference]: Finished difference Result 13364 states and 22418 transitions. [2022-12-13 14:40:01,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:40:01,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-12-13 14:40:01,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:01,397 INFO L225 Difference]: With dead ends: 13364 [2022-12-13 14:40:01,397 INFO L226 Difference]: Without dead ends: 9057 [2022-12-13 14:40:01,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:40:01,410 INFO L413 NwaCegarLoop]: 2000 mSDtfsCounter, 1968 mSDsluCounter, 3305 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2086 SdHoareTripleChecker+Valid, 5305 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:01,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2086 Valid, 5305 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 14:40:01,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9057 states. [2022-12-13 14:40:01,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9057 to 8578. [2022-12-13 14:40:01,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8578 states, 7015 states have (on average 1.607127583749109) internal successors, (11274), 7020 states have internal predecessors, (11274), 1402 states have call successors, (1402), 161 states have call predecessors, (1402), 160 states have return successors, (1396), 1396 states have call predecessors, (1396), 1396 states have call successors, (1396) [2022-12-13 14:40:01,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8578 states to 8578 states and 14072 transitions. [2022-12-13 14:40:01,691 INFO L78 Accepts]: Start accepts. Automaton has 8578 states and 14072 transitions. Word has length 34 [2022-12-13 14:40:01,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:01,691 INFO L495 AbstractCegarLoop]: Abstraction has 8578 states and 14072 transitions. [2022-12-13 14:40:01,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:40:01,692 INFO L276 IsEmpty]: Start isEmpty. Operand 8578 states and 14072 transitions. [2022-12-13 14:40:01,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-13 14:40:01,693 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:01,693 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, 1] [2022-12-13 14:40:01,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:40:01,693 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:01,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:01,694 INFO L85 PathProgramCache]: Analyzing trace with hash 565283349, now seen corresponding path program 1 times [2022-12-13 14:40:01,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:01,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770050437] [2022-12-13 14:40:01,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:01,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:01,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 14:40:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:02,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:40:02,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:02,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770050437] [2022-12-13 14:40:02,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770050437] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:02,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:40:02,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:40:02,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152172946] [2022-12-13 14:40:02,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:02,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:02,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:02,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:02,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:40:02,006 INFO L87 Difference]: Start difference. First operand 8578 states and 14072 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:40:03,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:03,374 INFO L93 Difference]: Finished difference Result 26608 states and 44642 transitions. [2022-12-13 14:40:03,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:40:03,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2022-12-13 14:40:03,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:03,465 INFO L225 Difference]: With dead ends: 26608 [2022-12-13 14:40:03,465 INFO L226 Difference]: Without dead ends: 18033 [2022-12-13 14:40:03,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:40:03,495 INFO L413 NwaCegarLoop]: 1990 mSDtfsCounter, 1954 mSDsluCounter, 3277 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2074 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:03,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2074 Valid, 5267 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 14:40:03,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18033 states. [2022-12-13 14:40:04,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18033 to 17090. [2022-12-13 14:40:04,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17090 states, 13979 states have (on average 1.6068388296730811) internal successors, (22462), 13984 states have internal predecessors, (22462), 2790 states have call successors, (2790), 321 states have call predecessors, (2790), 320 states have return successors, (2784), 2784 states have call predecessors, (2784), 2784 states have call successors, (2784) [2022-12-13 14:40:04,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17090 states to 17090 states and 28036 transitions. [2022-12-13 14:40:04,090 INFO L78 Accepts]: Start accepts. Automaton has 17090 states and 28036 transitions. Word has length 46 [2022-12-13 14:40:04,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:04,090 INFO L495 AbstractCegarLoop]: Abstraction has 17090 states and 28036 transitions. [2022-12-13 14:40:04,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:40:04,091 INFO L276 IsEmpty]: Start isEmpty. Operand 17090 states and 28036 transitions. [2022-12-13 14:40:04,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-13 14:40:04,092 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:04,092 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] [2022-12-13 14:40:04,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 14:40:04,092 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:04,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:04,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1318397405, now seen corresponding path program 1 times [2022-12-13 14:40:04,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:04,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339308116] [2022-12-13 14:40:04,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:04,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:04,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:40:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:04,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:04,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:40:04,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:04,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339308116] [2022-12-13 14:40:04,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339308116] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:04,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:40:04,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:40:04,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188262822] [2022-12-13 14:40:04,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:04,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:04,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:04,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:04,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:40:04,408 INFO L87 Difference]: Start difference. First operand 17090 states and 28036 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:40:05,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:05,873 INFO L93 Difference]: Finished difference Result 53024 states and 88950 transitions. [2022-12-13 14:40:05,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:40:05,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-12-13 14:40:05,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:06,001 INFO L225 Difference]: With dead ends: 53024 [2022-12-13 14:40:06,001 INFO L226 Difference]: Without dead ends: 35937 [2022-12-13 14:40:06,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:40:06,039 INFO L413 NwaCegarLoop]: 2015 mSDtfsCounter, 1974 mSDsluCounter, 3285 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 5300 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:06,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2046 Valid, 5300 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 14:40:06,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35937 states. [2022-12-13 14:40:07,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35937 to 34066. [2022-12-13 14:40:07,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34066 states, 27867 states have (on average 1.6064161911938852) internal successors, (44766), 27872 states have internal predecessors, (44766), 5558 states have call successors, (5558), 641 states have call predecessors, (5558), 640 states have return successors, (5552), 5552 states have call predecessors, (5552), 5552 states have call successors, (5552) [2022-12-13 14:40:07,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34066 states to 34066 states and 55876 transitions. [2022-12-13 14:40:07,183 INFO L78 Accepts]: Start accepts. Automaton has 34066 states and 55876 transitions. Word has length 41 [2022-12-13 14:40:07,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:07,184 INFO L495 AbstractCegarLoop]: Abstraction has 34066 states and 55876 transitions. [2022-12-13 14:40:07,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:40:07,185 INFO L276 IsEmpty]: Start isEmpty. Operand 34066 states and 55876 transitions. [2022-12-13 14:40:07,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 14:40:07,186 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:07,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:07,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 14:40:07,186 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:07,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:07,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1676985194, now seen corresponding path program 1 times [2022-12-13 14:40:07,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:07,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449463204] [2022-12-13 14:40:07,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:07,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:07,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:07,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449463204] [2022-12-13 14:40:07,396 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 14:40:07,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989610855] [2022-12-13 14:40:07,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:07,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:07,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:07,397 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:07,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 14:40:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:08,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 6986 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:40:08,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:40:08,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:08,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989610855] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:08,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:40:08,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:40:08,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698798256] [2022-12-13 14:40:08,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:08,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:40:08,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:08,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:40:08,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:40:08,476 INFO L87 Difference]: Start difference. First operand 34066 states and 55876 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 14:40:09,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:09,785 INFO L93 Difference]: Finished difference Result 102064 states and 167430 transitions. [2022-12-13 14:40:09,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:40:09,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-12-13 14:40:09,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:09,957 INFO L225 Difference]: With dead ends: 102064 [2022-12-13 14:40:09,957 INFO L226 Difference]: Without dead ends: 68001 [2022-12-13 14:40:10,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:40:10,030 INFO L413 NwaCegarLoop]: 2015 mSDtfsCounter, 1778 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1778 SdHoareTripleChecker+Valid, 3796 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:10,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1778 Valid, 3796 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:40:10,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68001 states. [2022-12-13 14:40:11,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68001 to 67986. [2022-12-13 14:40:11,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67986 states, 55659 states have (on average 1.6060295729351948) internal successors, (89390), 55664 states have internal predecessors, (89390), 11046 states have call successors, (11046), 1281 states have call predecessors, (11046), 1280 states have return successors, (11040), 11040 states have call predecessors, (11040), 11040 states have call successors, (11040) [2022-12-13 14:40:12,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67986 states to 67986 states and 111476 transitions. [2022-12-13 14:40:12,180 INFO L78 Accepts]: Start accepts. Automaton has 67986 states and 111476 transitions. Word has length 40 [2022-12-13 14:40:12,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:12,181 INFO L495 AbstractCegarLoop]: Abstraction has 67986 states and 111476 transitions. [2022-12-13 14:40:12,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 14:40:12,181 INFO L276 IsEmpty]: Start isEmpty. Operand 67986 states and 111476 transitions. [2022-12-13 14:40:12,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-13 14:40:12,182 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:12,182 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, 1, 1] [2022-12-13 14:40:12,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:40:12,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:12,383 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:12,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:12,384 INFO L85 PathProgramCache]: Analyzing trace with hash -325052108, now seen corresponding path program 1 times [2022-12-13 14:40:12,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:12,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180405548] [2022-12-13 14:40:12,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:12,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:12,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:12,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180405548] [2022-12-13 14:40:12,608 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 14:40:12,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550054967] [2022-12-13 14:40:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:12,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:12,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:12,609 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:12,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 14:40:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:13,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 7000 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:40:13,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:40:13,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:13,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550054967] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:13,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:40:13,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:40:13,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14261221] [2022-12-13 14:40:13,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:13,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:40:13,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:13,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:40:13,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:40:13,761 INFO L87 Difference]: Start difference. First operand 67986 states and 111476 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 14:40:15,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:15,777 INFO L93 Difference]: Finished difference Result 203696 states and 334038 transitions. [2022-12-13 14:40:15,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:40:15,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-12-13 14:40:15,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:16,146 INFO L225 Difference]: With dead ends: 203696 [2022-12-13 14:40:16,146 INFO L226 Difference]: Without dead ends: 135713 [2022-12-13 14:40:16,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:40:16,307 INFO L413 NwaCegarLoop]: 2021 mSDtfsCounter, 1771 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1771 SdHoareTripleChecker+Valid, 3802 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:16,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1771 Valid, 3802 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:40:16,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135713 states. [2022-12-13 14:40:20,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135713 to 135698. [2022-12-13 14:40:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135698 states, 111179 states have (on average 1.6056089729175473) internal successors, (178510), 111184 states have internal predecessors, (178510), 21958 states have call successors, (21958), 2561 states have call predecessors, (21958), 2560 states have return successors, (21952), 21952 states have call predecessors, (21952), 21952 states have call successors, (21952) [2022-12-13 14:40:20,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135698 states to 135698 states and 222420 transitions. [2022-12-13 14:40:20,787 INFO L78 Accepts]: Start accepts. Automaton has 135698 states and 222420 transitions. Word has length 47 [2022-12-13 14:40:20,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:20,787 INFO L495 AbstractCegarLoop]: Abstraction has 135698 states and 222420 transitions. [2022-12-13 14:40:20,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 14:40:20,788 INFO L276 IsEmpty]: Start isEmpty. Operand 135698 states and 222420 transitions. [2022-12-13 14:40:20,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 14:40:20,790 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:20,790 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, 1, 1, 1, 1] [2022-12-13 14:40:20,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 14:40:20,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:20,991 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:20,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:20,991 INFO L85 PathProgramCache]: Analyzing trace with hash 154865774, now seen corresponding path program 1 times [2022-12-13 14:40:20,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:20,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294328473] [2022-12-13 14:40:20,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:20,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:21,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:21,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294328473] [2022-12-13 14:40:21,197 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 14:40:21,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247221617] [2022-12-13 14:40:21,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:21,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:21,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:21,199 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:21,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 14:40:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:22,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 7004 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:40:22,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:22,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:40:22,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:22,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247221617] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:22,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:40:22,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:40:22,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903226413] [2022-12-13 14:40:22,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:22,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:40:22,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:22,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:40:22,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:40:22,435 INFO L87 Difference]: Start difference. First operand 135698 states and 222420 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 14:40:27,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:27,480 INFO L93 Difference]: Finished difference Result 406576 states and 666486 transitions. [2022-12-13 14:40:27,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:40:27,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2022-12-13 14:40:27,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:28,237 INFO L225 Difference]: With dead ends: 406576 [2022-12-13 14:40:28,237 INFO L226 Difference]: Without dead ends: 270881 [2022-12-13 14:40:28,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:40:28,536 INFO L413 NwaCegarLoop]: 2027 mSDtfsCounter, 1769 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 3808 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:28,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1769 Valid, 3808 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:40:28,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270881 states. [2022-12-13 14:40:35,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270881 to 270866. [2022-12-13 14:40:35,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270866 states, 222091 states have (on average 1.6051708533889262) internal successors, (356494), 222096 states have internal predecessors, (356494), 43654 states have call successors, (43654), 5121 states have call predecessors, (43654), 5120 states have return successors, (43648), 43648 states have call predecessors, (43648), 43648 states have call successors, (43648) [2022-12-13 14:40:36,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270866 states to 270866 states and 443796 transitions. [2022-12-13 14:40:36,665 INFO L78 Accepts]: Start accepts. Automaton has 270866 states and 443796 transitions. Word has length 49 [2022-12-13 14:40:36,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:36,665 INFO L495 AbstractCegarLoop]: Abstraction has 270866 states and 443796 transitions. [2022-12-13 14:40:36,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 14:40:36,666 INFO L276 IsEmpty]: Start isEmpty. Operand 270866 states and 443796 transitions. [2022-12-13 14:40:36,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 14:40:36,667 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:36,668 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] [2022-12-13 14:40:36,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 14:40:36,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 14:40:36,869 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:36,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:36,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1849024625, now seen corresponding path program 1 times [2022-12-13 14:40:36,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:36,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498649875] [2022-12-13 14:40:36,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:36,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:37,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:37,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498649875] [2022-12-13 14:40:37,029 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 14:40:37,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139696334] [2022-12-13 14:40:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:37,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:37,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:37,030 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:37,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 14:40:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:37,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 6990 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:40:37,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:40:37,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:37,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139696334] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:37,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:40:37,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:40:37,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998653852] [2022-12-13 14:40:37,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:37,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:40:37,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:37,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:40:37,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:40:37,854 INFO L87 Difference]: Start difference. First operand 270866 states and 443796 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 14:40:46,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:46,837 INFO L93 Difference]: Finished difference Result 811568 states and 1329846 transitions. [2022-12-13 14:40:46,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:40:46,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-12-13 14:40:46,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:48,893 INFO L225 Difference]: With dead ends: 811568 [2022-12-13 14:40:48,893 INFO L226 Difference]: Without dead ends: 540705 [2022-12-13 14:40:49,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:40:49,570 INFO L413 NwaCegarLoop]: 2033 mSDtfsCounter, 1776 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1776 SdHoareTripleChecker+Valid, 3814 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:49,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1776 Valid, 3814 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:40:49,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540705 states. [2022-12-13 14:41:03,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540705 to 540690. [2022-12-13 14:41:03,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540690 states, 443659 states have (on average 1.6047234475126166) internal successors, (711950), 443664 states have internal predecessors, (711950), 86790 states have call successors, (86790), 10241 states have call predecessors, (86790), 10240 states have return successors, (86784), 86784 states have call predecessors, (86784), 86784 states have call successors, (86784) [2022-12-13 14:41:06,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540690 states to 540690 states and 885524 transitions. [2022-12-13 14:41:06,147 INFO L78 Accepts]: Start accepts. Automaton has 540690 states and 885524 transitions. Word has length 42 [2022-12-13 14:41:06,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:41:06,147 INFO L495 AbstractCegarLoop]: Abstraction has 540690 states and 885524 transitions. [2022-12-13 14:41:06,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 14:41:06,147 INFO L276 IsEmpty]: Start isEmpty. Operand 540690 states and 885524 transitions. [2022-12-13 14:41:06,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-13 14:41:06,149 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:41:06,149 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] [2022-12-13 14:41:06,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 14:41:06,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:41:06,351 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:41:06,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:41:06,352 INFO L85 PathProgramCache]: Analyzing trace with hash 143875379, now seen corresponding path program 1 times [2022-12-13 14:41:06,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:41:06,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736016822] [2022-12-13 14:41:06,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:06,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:41:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:06,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:41:06,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736016822] [2022-12-13 14:41:06,513 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 14:41:06,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386496384] [2022-12-13 14:41:06,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:06,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:41:06,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:41:06,514 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:41:06,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 14:41:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:07,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 6992 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:41:07,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:41:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:41:07,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:41:07,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386496384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:41:07,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:41:07,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:41:07,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751331793] [2022-12-13 14:41:07,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:41:07,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:41:07,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:41:07,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:41:07,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:41:07,307 INFO L87 Difference]: Start difference. First operand 540690 states and 885524 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 14:41:27,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:41:27,127 INFO L93 Difference]: Finished difference Result 1620016 states and 2653494 transitions. [2022-12-13 14:41:27,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:41:27,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-12-13 14:41:27,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:41:31,077 INFO L225 Difference]: With dead ends: 1620016 [2022-12-13 14:41:31,077 INFO L226 Difference]: Without dead ends: 1079329 [2022-12-13 14:41:32,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:41:32,529 INFO L413 NwaCegarLoop]: 2039 mSDtfsCounter, 1775 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1775 SdHoareTripleChecker+Valid, 3820 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:41:32,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1775 Valid, 3820 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:41:33,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079329 states. [2022-12-13 14:42:00,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079329 to 1079314. [2022-12-13 14:42:01,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079314 states, 886283 states have (on average 1.6042708705909963) internal successors, (1421838), 886288 states have internal predecessors, (1421838), 172550 states have call successors, (172550), 20481 states have call predecessors, (172550), 20480 states have return successors, (172544), 172544 states have call predecessors, (172544), 172544 states have call successors, (172544) [2022-12-13 14:42:05,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079314 states to 1079314 states and 1766932 transitions. [2022-12-13 14:42:05,582 INFO L78 Accepts]: Start accepts. Automaton has 1079314 states and 1766932 transitions. Word has length 43 [2022-12-13 14:42:05,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:42:05,582 INFO L495 AbstractCegarLoop]: Abstraction has 1079314 states and 1766932 transitions. [2022-12-13 14:42:05,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 14:42:05,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1079314 states and 1766932 transitions. [2022-12-13 14:42:05,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-13 14:42:05,584 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:42:05,584 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, 1] [2022-12-13 14:42:05,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 14:42:05,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:42:05,786 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:42:05,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:42:05,787 INFO L85 PathProgramCache]: Analyzing trace with hash 326667952, now seen corresponding path program 1 times [2022-12-13 14:42:05,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:42:05,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158924052] [2022-12-13 14:42:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:42:05,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:42:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:05,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:42:05,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158924052] [2022-12-13 14:42:05,935 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 14:42:05,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228166813] [2022-12-13 14:42:05,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:42:05,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:42:05,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:42:05,936 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:42:05,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ace813-96ff-44b8-b0e2-10db80c48872/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 14:42:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:06,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 6998 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:42:06,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:42:06,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:42:06,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:42:06,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228166813] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:42:06,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:42:06,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:42:06,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942855040] [2022-12-13 14:42:06,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:42:06,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:42:06,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:42:06,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:42:06,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:42:06,692 INFO L87 Difference]: Start difference. First operand 1079314 states and 1766932 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)