./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--amc6821.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_11a61389-8795-4ed0-90a2-976481b7fa95/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a61389-8795-4ed0-90a2-976481b7fa95/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a61389-8795-4ed0-90a2-976481b7fa95/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a61389-8795-4ed0-90a2-976481b7fa95/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a61389-8795-4ed0-90a2-976481b7fa95/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a61389-8795-4ed0-90a2-976481b7fa95/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:58,072 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:58,239 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a61389-8795-4ed0-90a2-976481b7fa95/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 07:57:58,248 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:58,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:58,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:58,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:58,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:58,302 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:58,308 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:58,310 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:58,310 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:58,311 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:58,314 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:58,315 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:57:58,316 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:58,316 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:58,317 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:57:58,317 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:58,318 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:57:58,319 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:57:58,320 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:58,321 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:58,323 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:58,323 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:58,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:58,325 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:58,325 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:58,326 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:57:58,327 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:57:58,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:57:58,329 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:58,329 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:57:58,330 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:58,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:58,330 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:58,331 INFO L153 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_11a61389-8795-4ed0-90a2-976481b7fa95/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a61389-8795-4ed0-90a2-976481b7fa95/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df [2023-11-19 07:57:58,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:58,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:58,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:58,800 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:58,802 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:58,803 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a61389-8795-4ed0-90a2-976481b7fa95/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2023-11-19 07:58:02,277 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:58:02,892 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:58:02,893 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a61389-8795-4ed0-90a2-976481b7fa95/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2023-11-19 07:58:02,925 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a61389-8795-4ed0-90a2-976481b7fa95/bin/uautomizer-verify-uCwYo4JHxu/data/0c4d8e5dd/f25517a2f8d245aa9c363031211c1063/FLAG5f95c491e [2023-11-19 07:58:02,941 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a61389-8795-4ed0-90a2-976481b7fa95/bin/uautomizer-verify-uCwYo4JHxu/data/0c4d8e5dd/f25517a2f8d245aa9c363031211c1063 [2023-11-19 07:58:02,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:58:02,946 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:58:02,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:02,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:58:02,953 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:58:02,954 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:02" (1/1) ... [2023-11-19 07:58:02,955 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d8e0d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:02, skipping insertion in model container [2023-11-19 07:58:02,956 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:02" (1/1) ... [2023-11-19 07:58:03,060 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:58:04,472 WARN L240 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_11a61389-8795-4ed0-90a2-976481b7fa95/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i[139464,139477] [2023-11-19 07:58:04,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:04,672 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:58:04,986 WARN L240 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_11a61389-8795-4ed0-90a2-976481b7fa95/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i[139464,139477] [2023-11-19 07:58:05,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:05,266 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:05,275 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:58:05,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:05 WrapperNode [2023-11-19 07:58:05,276 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:05,277 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:05,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:58:05,278 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:58:05,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:05" (1/1) ... [2023-11-19 07:58:05,409 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:05" (1/1) ... [2023-11-19 07:58:05,638 INFO L138 Inliner]: procedures = 138, calls = 1489, calls flagged for inlining = 60, calls inlined = 52, statements flattened = 3966 [2023-11-19 07:58:05,639 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:05,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:58:05,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:58:05,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:58:05,654 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:05" (1/1) ... [2023-11-19 07:58:05,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:05" (1/1) ... [2023-11-19 07:58:05,699 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:05" (1/1) ... [2023-11-19 07:58:05,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:05" (1/1) ... [2023-11-19 07:58:05,890 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:05" (1/1) ... [2023-11-19 07:58:05,927 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:05" (1/1) ... [2023-11-19 07:58:05,950 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:05" (1/1) ... [2023-11-19 07:58:05,976 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:05" (1/1) ... [2023-11-19 07:58:06,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:58:06,017 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:58:06,017 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:58:06,017 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:58:06,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:05" (1/1) ... [2023-11-19 07:58:06,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:06,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a61389-8795-4ed0-90a2-976481b7fa95/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:06,065 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a61389-8795-4ed0-90a2-976481b7fa95/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:06,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a61389-8795-4ed0-90a2-976481b7fa95/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:58:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure get_pwm1_auto_point_pwm [2023-11-19 07:58:06,118 INFO L138 BoogieDeclarations]: Found implementation of procedure get_pwm1_auto_point_pwm [2023-11-19 07:58:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-19 07:58:06,118 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-19 07:58:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:58:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure get_fan [2023-11-19 07:58:06,119 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fan [2023-11-19 07:58:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2023-11-19 07:58:06,119 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2023-11-19 07:58:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2023-11-19 07:58:06,120 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2023-11-19 07:58:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_detect [2023-11-19 07:58:06,120 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_detect [2023-11-19 07:58:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 07:58:06,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 07:58:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:58:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 07:58:06,121 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 07:58:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 07:58:06,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 07:58:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-19 07:58:06,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-19 07:58:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 07:58:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 07:58:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:58:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2023-11-19 07:58:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2023-11-19 07:58:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-19 07:58:06,124 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-19 07:58:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_auto_point_temp [2023-11-19 07:58:06,124 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_auto_point_temp [2023-11-19 07:58:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure set_slope_register [2023-11-19 07:58:06,125 INFO L138 BoogieDeclarations]: Found implementation of procedure set_slope_register [2023-11-19 07:58:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_alarm [2023-11-19 07:58:06,125 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_alarm [2023-11-19 07:58:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:58:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:58:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:58:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 07:58:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2023-11-19 07:58:06,127 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2023-11-19 07:58:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2023-11-19 07:58:06,127 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2023-11-19 07:58:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:58:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_update_device [2023-11-19 07:58:06,128 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_update_device [2023-11-19 07:58:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2023-11-19 07:58:06,128 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2023-11-19 07:58:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:58:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:58:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp [2023-11-19 07:58:06,129 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp [2023-11-19 07:58:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp [2023-11-19 07:58:06,129 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp [2023-11-19 07:58:06,130 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 07:58:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 07:58:06,130 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan [2023-11-19 07:58:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan [2023-11-19 07:58:06,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:58:06,131 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2023-11-19 07:58:06,131 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2023-11-19 07:58:06,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2023-11-19 07:58:06,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2023-11-19 07:58:06,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:58:06,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:58:06,132 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_auto_point_temp [2023-11-19 07:58:06,132 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_auto_point_temp [2023-11-19 07:58:06,132 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 07:58:06,132 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 07:58:06,733 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:58:06,737 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:58:11,260 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:58:11,280 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:58:11,280 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:58:11,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:11 BoogieIcfgContainer [2023-11-19 07:58:11,294 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:58:11,297 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:58:11,297 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:58:11,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:58:11,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:58:02" (1/3) ... [2023-11-19 07:58:11,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd5ec3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:11, skipping insertion in model container [2023-11-19 07:58:11,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:05" (2/3) ... [2023-11-19 07:58:11,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd5ec3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:11, skipping insertion in model container [2023-11-19 07:58:11,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:11" (3/3) ... [2023-11-19 07:58:11,304 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2023-11-19 07:58:11,325 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:58:11,325 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:58:11,404 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:11,411 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=LoopHeads, 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;@7f014b83, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:11,412 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:58:11,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 982 states, 753 states have (on average 1.5073041168658698) internal successors, (1135), 760 states have internal predecessors, (1135), 199 states have call successors, (199), 28 states have call predecessors, (199), 28 states have return successors, (199), 199 states have call predecessors, (199), 199 states have call successors, (199) [2023-11-19 07:58:11,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:58:11,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:11,443 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] [2023-11-19 07:58:11,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:58:11,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:11,449 INFO L85 PathProgramCache]: Analyzing trace with hash -615416676, now seen corresponding path program 1 times [2023-11-19 07:58:11,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:11,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448394790] [2023-11-19 07:58:11,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:11,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:12,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 07:58:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:12,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:58:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:12,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:12,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:12,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448394790] [2023-11-19 07:58:12,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448394790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:12,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:12,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:12,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058937111] [2023-11-19 07:58:12,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:12,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:12,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:12,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:12,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:12,394 INFO L87 Difference]: Start difference. First operand has 982 states, 753 states have (on average 1.5073041168658698) internal successors, (1135), 760 states have internal predecessors, (1135), 199 states have call successors, (199), 28 states have call predecessors, (199), 28 states have return successors, (199), 199 states have call predecessors, (199), 199 states have call successors, (199) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:58:14,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:14,696 INFO L93 Difference]: Finished difference Result 3085 states and 5028 transitions. [2023-11-19 07:58:14,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:58:14,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2023-11-19 07:58:14,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:14,730 INFO L225 Difference]: With dead ends: 3085 [2023-11-19 07:58:14,730 INFO L226 Difference]: Without dead ends: 2098 [2023-11-19 07:58:14,745 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 [2023-11-19 07:58:14,748 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1657 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 4211 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:14,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1803 Valid, 4211 Invalid, 982 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [426 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-19 07:58:14,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2023-11-19 07:58:14,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1927. [2023-11-19 07:58:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1481 states have (on average 1.49898717083052) internal successors, (2220), 1486 states have internal predecessors, (2220), 391 states have call successors, (391), 55 states have call predecessors, (391), 54 states have return successors, (385), 385 states have call predecessors, (385), 385 states have call successors, (385) [2023-11-19 07:58:14,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 2996 transitions. [2023-11-19 07:58:14,988 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 2996 transitions. Word has length 30 [2023-11-19 07:58:14,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:14,989 INFO L495 AbstractCegarLoop]: Abstraction has 1927 states and 2996 transitions. [2023-11-19 07:58:14,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:58:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 2996 transitions. [2023-11-19 07:58:14,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:58:14,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:14,995 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] [2023-11-19 07:58:14,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:58:14,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:58:14,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:14,996 INFO L85 PathProgramCache]: Analyzing trace with hash 3033649, now seen corresponding path program 1 times [2023-11-19 07:58:14,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:14,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801694626] [2023-11-19 07:58:14,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:14,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:15,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 07:58:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:15,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:58:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:15,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:15,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801694626] [2023-11-19 07:58:15,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801694626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:15,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:15,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:15,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000836435] [2023-11-19 07:58:15,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:15,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:15,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:15,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:15,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:15,366 INFO L87 Difference]: Start difference. First operand 1927 states and 2996 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-19 07:58:17,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:17,403 INFO L93 Difference]: Finished difference Result 6075 states and 9538 transitions. [2023-11-19 07:58:17,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:58:17,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 30 [2023-11-19 07:58:17,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:17,437 INFO L225 Difference]: With dead ends: 6075 [2023-11-19 07:58:17,438 INFO L226 Difference]: Without dead ends: 4151 [2023-11-19 07:58:17,447 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 [2023-11-19 07:58:17,449 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 1656 mSDsluCounter, 2568 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 4223 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:17,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1802 Valid, 4223 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 07:58:17,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2023-11-19 07:58:17,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 3824. [2023-11-19 07:58:17,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3824 states, 2941 states have (on average 1.4988099285957157) internal successors, (4408), 2946 states have internal predecessors, (4408), 774 states have call successors, (774), 109 states have call predecessors, (774), 108 states have return successors, (768), 768 states have call predecessors, (768), 768 states have call successors, (768) [2023-11-19 07:58:17,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 5950 transitions. [2023-11-19 07:58:17,721 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 5950 transitions. Word has length 30 [2023-11-19 07:58:17,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:17,721 INFO L495 AbstractCegarLoop]: Abstraction has 3824 states and 5950 transitions. [2023-11-19 07:58:17,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-19 07:58:17,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 5950 transitions. [2023-11-19 07:58:17,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 07:58:17,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:17,731 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] [2023-11-19 07:58:17,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:58:17,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:58:17,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:17,732 INFO L85 PathProgramCache]: Analyzing trace with hash 458439215, now seen corresponding path program 1 times [2023-11-19 07:58:17,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:17,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114616298] [2023-11-19 07:58:17,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:17,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:18,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:58:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:18,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:58:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:18,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:18,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:18,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114616298] [2023-11-19 07:58:18,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114616298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:18,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:18,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:18,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479901445] [2023-11-19 07:58:18,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:18,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:18,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:18,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:18,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:18,154 INFO L87 Difference]: Start difference. First operand 3824 states and 5950 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (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) [2023-11-19 07:58:20,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:20,436 INFO L93 Difference]: Finished difference Result 12066 states and 18956 transitions. [2023-11-19 07:58:20,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:58:20,437 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 [2023-11-19 07:58:20,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:20,527 INFO L225 Difference]: With dead ends: 12066 [2023-11-19 07:58:20,527 INFO L226 Difference]: Without dead ends: 8245 [2023-11-19 07:58:20,553 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 [2023-11-19 07:58:20,556 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1653 mSDsluCounter, 2578 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1799 SdHoareTripleChecker+Valid, 4245 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:20,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1799 Valid, 4245 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-19 07:58:20,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8245 states. [2023-11-19 07:58:21,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8245 to 7606. [2023-11-19 07:58:21,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7606 states, 5851 states have (on average 1.4982054349683815) internal successors, (8766), 5856 states have internal predecessors, (8766), 1538 states have call successors, (1538), 217 states have call predecessors, (1538), 216 states have return successors, (1532), 1532 states have call predecessors, (1532), 1532 states have call successors, (1532) [2023-11-19 07:58:21,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7606 states to 7606 states and 11836 transitions. [2023-11-19 07:58:21,146 INFO L78 Accepts]: Start accepts. Automaton has 7606 states and 11836 transitions. Word has length 33 [2023-11-19 07:58:21,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:21,147 INFO L495 AbstractCegarLoop]: Abstraction has 7606 states and 11836 transitions. [2023-11-19 07:58:21,147 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) [2023-11-19 07:58:21,147 INFO L276 IsEmpty]: Start isEmpty. Operand 7606 states and 11836 transitions. [2023-11-19 07:58:21,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 07:58:21,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:21,149 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] [2023-11-19 07:58:21,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:58:21,150 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:58:21,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:21,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1275046571, now seen corresponding path program 1 times [2023-11-19 07:58:21,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:21,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485082091] [2023-11-19 07:58:21,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:21,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:21,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 07:58:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:21,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:58:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:21,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:21,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485082091] [2023-11-19 07:58:21,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485082091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:21,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:21,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:21,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994952709] [2023-11-19 07:58:21,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:21,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:21,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:21,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:21,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:21,487 INFO L87 Difference]: Start difference. First operand 7606 states and 11836 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (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) [2023-11-19 07:58:23,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:23,911 INFO L93 Difference]: Finished difference Result 23980 states and 37670 transitions. [2023-11-19 07:58:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:58:23,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (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 36 [2023-11-19 07:58:23,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:24,039 INFO L225 Difference]: With dead ends: 23980 [2023-11-19 07:58:24,039 INFO L226 Difference]: Without dead ends: 16377 [2023-11-19 07:58:24,081 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 [2023-11-19 07:58:24,082 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 1644 mSDsluCounter, 2515 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1790 SdHoareTripleChecker+Valid, 4105 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:24,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1790 Valid, 4105 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 07:58:24,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16377 states. [2023-11-19 07:58:25,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16377 to 15114. [2023-11-19 07:58:25,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15114 states, 11627 states have (on average 1.4970327685559475) internal successors, (17406), 11632 states have internal predecessors, (17406), 3054 states have call successors, (3054), 433 states have call predecessors, (3054), 432 states have return successors, (3048), 3048 states have call predecessors, (3048), 3048 states have call successors, (3048) [2023-11-19 07:58:25,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15114 states to 15114 states and 23508 transitions. [2023-11-19 07:58:25,272 INFO L78 Accepts]: Start accepts. Automaton has 15114 states and 23508 transitions. Word has length 36 [2023-11-19 07:58:25,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:25,273 INFO L495 AbstractCegarLoop]: Abstraction has 15114 states and 23508 transitions. [2023-11-19 07:58:25,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (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) [2023-11-19 07:58:25,274 INFO L276 IsEmpty]: Start isEmpty. Operand 15114 states and 23508 transitions. [2023-11-19 07:58:25,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 07:58:25,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:25,281 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] [2023-11-19 07:58:25,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:58:25,282 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:58:25,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:25,283 INFO L85 PathProgramCache]: Analyzing trace with hash 869642687, now seen corresponding path program 1 times [2023-11-19 07:58:25,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:25,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562512185] [2023-11-19 07:58:25,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:25,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:25,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:58:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:25,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:58:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:25,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:25,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:25,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562512185] [2023-11-19 07:58:25,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562512185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:25,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:25,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:25,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003963924] [2023-11-19 07:58:25,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:25,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:25,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:25,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:25,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:25,757 INFO L87 Difference]: Start difference. First operand 15114 states and 23508 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) [2023-11-19 07:58:28,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:28,771 INFO L93 Difference]: Finished difference Result 47736 states and 74950 transitions. [2023-11-19 07:58:28,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:58:28,773 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 [2023-11-19 07:58:28,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:28,987 INFO L225 Difference]: With dead ends: 47736 [2023-11-19 07:58:28,987 INFO L226 Difference]: Without dead ends: 32625 [2023-11-19 07:58:29,174 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 [2023-11-19 07:58:29,175 INFO L413 NwaCegarLoop]: 1696 mSDtfsCounter, 1652 mSDsluCounter, 2604 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1798 SdHoareTripleChecker+Valid, 4300 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:29,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1798 Valid, 4300 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-19 07:58:29,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32625 states. [2023-11-19 07:58:30,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32625 to 30114. [2023-11-19 07:58:30,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30114 states, 23163 states have (on average 1.496092906791003) internal successors, (34654), 23168 states have internal predecessors, (34654), 6086 states have call successors, (6086), 865 states have call predecessors, (6086), 864 states have return successors, (6080), 6080 states have call predecessors, (6080), 6080 states have call successors, (6080) [2023-11-19 07:58:31,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30114 states to 30114 states and 46820 transitions. [2023-11-19 07:58:31,053 INFO L78 Accepts]: Start accepts. Automaton has 30114 states and 46820 transitions. Word has length 34 [2023-11-19 07:58:31,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:31,054 INFO L495 AbstractCegarLoop]: Abstraction has 30114 states and 46820 transitions. [2023-11-19 07:58:31,054 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) [2023-11-19 07:58:31,054 INFO L276 IsEmpty]: Start isEmpty. Operand 30114 states and 46820 transitions. [2023-11-19 07:58:31,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 07:58:31,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:31,057 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] [2023-11-19 07:58:31,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:58:31,057 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:58:31,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:31,058 INFO L85 PathProgramCache]: Analyzing trace with hash 524836654, now seen corresponding path program 1 times [2023-11-19 07:58:31,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:31,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017402226] [2023-11-19 07:58:31,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:31,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:31,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 07:58:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:31,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:58:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:31,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:31,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:31,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017402226] [2023-11-19 07:58:31,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017402226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:31,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:31,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:31,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438259544] [2023-11-19 07:58:31,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:31,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:31,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:31,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:31,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:31,602 INFO L87 Difference]: Start difference. First operand 30114 states and 46820 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) [2023-11-19 07:58:35,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:35,579 INFO L93 Difference]: Finished difference Result 95136 states and 149318 transitions. [2023-11-19 07:58:35,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:58:35,582 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 [2023-11-19 07:58:35,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:36,152 INFO L225 Difference]: With dead ends: 95136 [2023-11-19 07:58:36,153 INFO L226 Difference]: Without dead ends: 65025 [2023-11-19 07:58:36,259 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 [2023-11-19 07:58:36,264 INFO L413 NwaCegarLoop]: 1708 mSDtfsCounter, 1649 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 4322 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:36,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1795 Valid, 4322 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 07:58:36,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65025 states. [2023-11-19 07:58:39,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65025 to 60018. [2023-11-19 07:58:39,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60018 states, 46155 states have (on average 1.495092622684433) internal successors, (69006), 46160 states have internal predecessors, (69006), 12134 states have call successors, (12134), 1729 states have call predecessors, (12134), 1728 states have return successors, (12128), 12128 states have call predecessors, (12128), 12128 states have call successors, (12128) [2023-11-19 07:58:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60018 states to 60018 states and 93268 transitions. [2023-11-19 07:58:40,072 INFO L78 Accepts]: Start accepts. Automaton has 60018 states and 93268 transitions. Word has length 37 [2023-11-19 07:58:40,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:40,073 INFO L495 AbstractCegarLoop]: Abstraction has 60018 states and 93268 transitions. [2023-11-19 07:58:40,073 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) [2023-11-19 07:58:40,073 INFO L276 IsEmpty]: Start isEmpty. Operand 60018 states and 93268 transitions. [2023-11-19 07:58:40,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 07:58:40,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:40,075 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] [2023-11-19 07:58:40,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:58:40,075 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:58:40,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:40,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1008794827, now seen corresponding path program 1 times [2023-11-19 07:58:40,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:40,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173328530] [2023-11-19 07:58:40,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:40,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:40,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 07:58:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:40,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:58:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:40,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:40,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:40,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173328530] [2023-11-19 07:58:40,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173328530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:40,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:40,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:40,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258002618] [2023-11-19 07:58:40,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:40,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:40,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:40,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:40,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:40,713 INFO L87 Difference]: Start difference. First operand 60018 states and 93268 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (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)