./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 e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/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_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP --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 --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:14:21,619 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:14:21,797 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 22:14:21,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:14:21,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:14:21,853 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:14:21,854 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:14:21,855 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:14:21,856 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:14:21,862 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:14:21,863 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:14:21,864 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:14:21,864 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:14:21,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:14:21,868 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:14:21,868 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:14:21,869 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:14:21,869 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:14:21,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:14:21,871 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:14:21,871 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:14:21,872 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:14:21,873 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:14:21,874 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:14:21,874 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:14:21,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:14:21,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:14:21,876 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:14:21,877 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:14:21,877 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:14:21,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:14:21,880 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:14:21,880 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:14:21,880 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:14:21,881 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:14:21,881 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:14:21,881 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_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ad6d1ed8310d8e3264189ac87472d58c77647a0c63d75779b5974e889987542 [2023-11-06 22:14:22,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:14:22,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:14:22,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:14:22,331 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:14:22,332 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:14:22,334 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2023-11-06 22:14:26,017 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:14:26,639 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:14:26,643 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2023-11-06 22:14:26,689 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/data/a17654dfe/223b2b744bf64257ac7c70b59fe20526/FLAG8809339bd [2023-11-06 22:14:26,707 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/data/a17654dfe/223b2b744bf64257ac7c70b59fe20526 [2023-11-06 22:14:26,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:14:26,717 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:14:26,721 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:14:26,723 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:14:26,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:14:26,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:26" (1/1) ... [2023-11-06 22:14:26,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@737139eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:26, skipping insertion in model container [2023-11-06 22:14:26,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:26" (1/1) ... [2023-11-06 22:14:26,940 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:14:28,237 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_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i[168201,168214] [2023-11-06 22:14:28,332 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:14:28,435 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:14:28,827 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_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i[168201,168214] [2023-11-06 22:14:28,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:14:29,169 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:14:29,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:29 WrapperNode [2023-11-06 22:14:29,171 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:14:29,172 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:14:29,173 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:14:29,173 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:14:29,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:29" (1/1) ... [2023-11-06 22:14:29,306 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:29" (1/1) ... [2023-11-06 22:14:29,595 INFO L138 Inliner]: procedures = 115, calls = 2153, calls flagged for inlining = 45, calls inlined = 37, statements flattened = 5491 [2023-11-06 22:14:29,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:14:29,597 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:14:29,597 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:14:29,597 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:14:29,631 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:29" (1/1) ... [2023-11-06 22:14:29,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:29" (1/1) ... [2023-11-06 22:14:29,807 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:29" (1/1) ... [2023-11-06 22:14:29,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:29" (1/1) ... [2023-11-06 22:14:29,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:29" (1/1) ... [2023-11-06 22:14:30,030 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:29" (1/1) ... [2023-11-06 22:14:30,078 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:29" (1/1) ... [2023-11-06 22:14:30,101 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:29" (1/1) ... [2023-11-06 22:14:30,141 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:14:30,143 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:14:30,143 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:14:30,143 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:14:30,144 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:29" (1/1) ... [2023-11-06 22:14:30,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:14:30,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:14:30,183 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:14:30,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:14:30,225 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_set_limit [2023-11-06 22:14:30,226 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_set_limit [2023-11-06 22:14:30,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:14:30,227 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2023-11-06 22:14:30,228 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2023-11-06 22:14:30,228 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2023-11-06 22:14:30,228 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2023-11-06 22:14:30,228 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_limit [2023-11-06 22:14:30,228 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_limit [2023-11-06 22:14:30,229 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_update_device [2023-11-06 22:14:30,229 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_update_device [2023-11-06 22:14:30,229 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_input [2023-11-06 22:14:30,229 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_input [2023-11-06 22:14:30,229 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_read_adc [2023-11-06 22:14:30,229 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_read_adc [2023-11-06 22:14:30,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-06 22:14:30,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-06 22:14:30,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_max16065_data [2023-11-06 22:14:30,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_max16065_data [2023-11-06 22:14:30,232 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_alarm [2023-11-06 22:14:30,232 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_alarm [2023-11-06 22:14:30,232 INFO L130 BoogieDeclarations]: Found specification of procedure LIMIT_TO_MV [2023-11-06 22:14:30,232 INFO L138 BoogieDeclarations]: Found implementation of procedure LIMIT_TO_MV [2023-11-06 22:14:30,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:14:30,233 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-06 22:14:30,233 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-06 22:14:30,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-06 22:14:30,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-06 22:14:30,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-06 22:14:30,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-06 22:14:30,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:14:30,234 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-06 22:14:30,235 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-06 22:14:30,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:14:30,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:14:30,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:14:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2023-11-06 22:14:30,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2023-11-06 22:14:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2023-11-06 22:14:30,236 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2023-11-06 22:14:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:14:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:14:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:14:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_cleanup [2023-11-06 22:14:30,237 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_cleanup [2023-11-06 22:14:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:14:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2023-11-06 22:14:30,237 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2023-11-06 22:14:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:14:30,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:14:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_file [2023-11-06 22:14:30,237 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_file [2023-11-06 22:14:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-06 22:14:30,237 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-06 22:14:30,851 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:14:30,854 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:14:36,855 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:14:36,878 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:14:36,878 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:14:36,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:36 BoogieIcfgContainer [2023-11-06 22:14:36,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:14:36,885 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:14:36,885 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:14:36,889 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:14:36,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:14:26" (1/3) ... [2023-11-06 22:14:36,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b56ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:36, skipping insertion in model container [2023-11-06 22:14:36,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:29" (2/3) ... [2023-11-06 22:14:36,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b56ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:36, skipping insertion in model container [2023-11-06 22:14:36,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:36" (3/3) ... [2023-11-06 22:14:36,893 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2023-11-06 22:14:36,912 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:14:36,913 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:14:37,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:14:37,017 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;@5cf81b7a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:14:37,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:14:37,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 1116 states, 911 states have (on average 1.607025246981339) internal successors, (1464), 918 states have internal predecessors, (1464), 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) [2023-11-06 22:14:37,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 22:14:37,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:37,056 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] [2023-11-06 22:14:37,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:37,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:37,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1111918002, now seen corresponding path program 1 times [2023-11-06 22:14:37,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:37,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959635627] [2023-11-06 22:14:37,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:37,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:38,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:14:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:38,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:38,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:38,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:38,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959635627] [2023-11-06 22:14:38,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959635627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:38,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:38,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:14:38,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993257944] [2023-11-06 22:14:38,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:38,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:14:38,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:38,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:14:38,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:14:38,297 INFO L87 Difference]: Start difference. First operand has 1116 states, 911 states have (on average 1.607025246981339) internal successors, (1464), 918 states have internal predecessors, (1464), 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) [2023-11-06 22:14:40,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:40,338 INFO L93 Difference]: Finished difference Result 3450 states and 6062 transitions. [2023-11-06 22:14:40,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:14:40,342 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 [2023-11-06 22:14:40,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:40,403 INFO L225 Difference]: With dead ends: 3450 [2023-11-06 22:14:40,403 INFO L226 Difference]: Without dead ends: 2329 [2023-11-06 22:14:40,425 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 [2023-11-06 22:14:40,428 INFO L413 NwaCegarLoop]: 1804 mSDtfsCounter, 1993 mSDsluCounter, 3256 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2111 SdHoareTripleChecker+Valid, 5060 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:40,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2111 Valid, 5060 Invalid, 755 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [421 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:14:40,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2023-11-06 22:14:40,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2196. [2023-11-06 22:14:40,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 1798 states have (on average 1.6078976640711902) internal successors, (2891), 1803 states have internal predecessors, (2891), 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) [2023-11-06 22:14:40,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 3599 transitions. [2023-11-06 22:14:40,753 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 3599 transitions. Word has length 33 [2023-11-06 22:14:40,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:40,754 INFO L495 AbstractCegarLoop]: Abstraction has 2196 states and 3599 transitions. [2023-11-06 22:14:40,754 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) [2023-11-06 22:14:40,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 3599 transitions. [2023-11-06 22:14:40,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-06 22:14:40,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:40,761 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] [2023-11-06 22:14:40,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:14:40,762 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:40,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:40,763 INFO L85 PathProgramCache]: Analyzing trace with hash 588324831, now seen corresponding path program 1 times [2023-11-06 22:14:40,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:40,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760900973] [2023-11-06 22:14:40,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:40,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:41,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:14:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:41,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:41,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:41,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:41,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760900973] [2023-11-06 22:14:41,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760900973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:41,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:41,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:14:41,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54082261] [2023-11-06 22:14:41,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:41,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:14:41,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:41,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:14:41,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:14:41,526 INFO L87 Difference]: Start difference. First operand 2196 states and 3599 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) [2023-11-06 22:14:43,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:43,267 INFO L93 Difference]: Finished difference Result 6806 states and 11411 transitions. [2023-11-06 22:14:43,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:14:43,269 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 [2023-11-06 22:14:43,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:43,315 INFO L225 Difference]: With dead ends: 6806 [2023-11-06 22:14:43,315 INFO L226 Difference]: Without dead ends: 4613 [2023-11-06 22:14:43,328 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 [2023-11-06 22:14:43,330 INFO L413 NwaCegarLoop]: 1830 mSDtfsCounter, 1982 mSDsluCounter, 3252 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 5082 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:43,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2089 Valid, 5082 Invalid, 756 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [421 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 22:14:43,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4613 states. [2023-11-06 22:14:43,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4613 to 4362. [2023-11-06 22:14:43,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4362 states, 3575 states have (on average 1.6083916083916083) internal successors, (5750), 3580 states have internal predecessors, (5750), 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) [2023-11-06 22:14:43,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4362 states to 4362 states and 7156 transitions. [2023-11-06 22:14:43,620 INFO L78 Accepts]: Start accepts. Automaton has 4362 states and 7156 transitions. Word has length 34 [2023-11-06 22:14:43,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:43,620 INFO L495 AbstractCegarLoop]: Abstraction has 4362 states and 7156 transitions. [2023-11-06 22:14:43,620 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) [2023-11-06 22:14:43,621 INFO L276 IsEmpty]: Start isEmpty. Operand 4362 states and 7156 transitions. [2023-11-06 22:14:43,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-06 22:14:43,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:43,623 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] [2023-11-06 22:14:43,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:14:43,624 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:43,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:43,624 INFO L85 PathProgramCache]: Analyzing trace with hash 124859725, now seen corresponding path program 1 times [2023-11-06 22:14:43,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:43,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542440416] [2023-11-06 22:14:43,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:43,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:44,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:14:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:44,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:44,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:44,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542440416] [2023-11-06 22:14:44,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542440416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:44,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:44,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:14:44,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289311332] [2023-11-06 22:14:44,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:44,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:14:44,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:44,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:14:44,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:14:44,197 INFO L87 Difference]: Start difference. First operand 4362 states and 7156 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) [2023-11-06 22:14:46,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:46,040 INFO L93 Difference]: Finished difference Result 13528 states and 22698 transitions. [2023-11-06 22:14:46,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:14:46,041 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 [2023-11-06 22:14:46,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:46,127 INFO L225 Difference]: With dead ends: 13528 [2023-11-06 22:14:46,127 INFO L226 Difference]: Without dead ends: 9169 [2023-11-06 22:14:46,154 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 [2023-11-06 22:14:46,155 INFO L413 NwaCegarLoop]: 1849 mSDtfsCounter, 1998 mSDsluCounter, 3286 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2079 SdHoareTripleChecker+Valid, 5135 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:46,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2079 Valid, 5135 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 22:14:46,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9169 states. [2023-11-06 22:14:46,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9169 to 8682. [2023-11-06 22:14:46,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8682 states, 7119 states have (on average 1.6083719623542632) internal successors, (11450), 7124 states have internal predecessors, (11450), 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) [2023-11-06 22:14:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8682 states to 8682 states and 14248 transitions. [2023-11-06 22:14:46,880 INFO L78 Accepts]: Start accepts. Automaton has 8682 states and 14248 transitions. Word has length 37 [2023-11-06 22:14:46,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:46,880 INFO L495 AbstractCegarLoop]: Abstraction has 8682 states and 14248 transitions. [2023-11-06 22:14:46,880 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) [2023-11-06 22:14:46,881 INFO L276 IsEmpty]: Start isEmpty. Operand 8682 states and 14248 transitions. [2023-11-06 22:14:46,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-06 22:14:46,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:46,884 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] [2023-11-06 22:14:46,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:14:46,884 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:46,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:46,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1791083073, now seen corresponding path program 1 times [2023-11-06 22:14:46,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:46,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139951254] [2023-11-06 22:14:46,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:46,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:47,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:14:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:47,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:47,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:47,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:47,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139951254] [2023-11-06 22:14:47,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139951254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:47,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:47,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:14:47,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728799555] [2023-11-06 22:14:47,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:47,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:14:47,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:47,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:14:47,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:14:47,404 INFO L87 Difference]: Start difference. First operand 8682 states and 14248 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) [2023-11-06 22:14:49,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:49,686 INFO L93 Difference]: Finished difference Result 26936 states and 45202 transitions. [2023-11-06 22:14:49,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:14:49,687 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 [2023-11-06 22:14:49,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:49,834 INFO L225 Difference]: With dead ends: 26936 [2023-11-06 22:14:49,834 INFO L226 Difference]: Without dead ends: 18257 [2023-11-06 22:14:49,891 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 [2023-11-06 22:14:49,892 INFO L413 NwaCegarLoop]: 1875 mSDtfsCounter, 1992 mSDsluCounter, 3295 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2059 SdHoareTripleChecker+Valid, 5170 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:49,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2059 Valid, 5170 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 22:14:49,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18257 states. [2023-11-06 22:14:51,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18257 to 17298. [2023-11-06 22:14:51,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17298 states, 14187 states have (on average 1.608091915133573) internal successors, (22814), 14192 states have internal predecessors, (22814), 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) [2023-11-06 22:14:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17298 states to 17298 states and 28388 transitions. [2023-11-06 22:14:51,242 INFO L78 Accepts]: Start accepts. Automaton has 17298 states and 28388 transitions. Word has length 41 [2023-11-06 22:14:51,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:51,243 INFO L495 AbstractCegarLoop]: Abstraction has 17298 states and 28388 transitions. [2023-11-06 22:14:51,244 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) [2023-11-06 22:14:51,244 INFO L276 IsEmpty]: Start isEmpty. Operand 17298 states and 28388 transitions. [2023-11-06 22:14:51,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-06 22:14:51,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:51,248 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] [2023-11-06 22:14:51,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:14:51,248 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:51,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:51,249 INFO L85 PathProgramCache]: Analyzing trace with hash 430507871, now seen corresponding path program 1 times [2023-11-06 22:14:51,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:51,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153513448] [2023-11-06 22:14:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:51,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:51,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:51,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153513448] [2023-11-06 22:14:51,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:14:51,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118835388] [2023-11-06 22:14:51,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:51,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:51,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:14:51,712 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:14:51,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:14:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:53,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 6994 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:14:53,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:53,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:14:53,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118835388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:53,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:53,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:14:53,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194079757] [2023-11-06 22:14:53,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:53,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:14:53,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:53,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:14:53,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:14:53,578 INFO L87 Difference]: Start difference. First operand 17298 states and 28388 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) [2023-11-06 22:14:55,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:55,027 INFO L93 Difference]: Finished difference Result 51824 states and 85062 transitions. [2023-11-06 22:14:55,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:14:55,028 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 [2023-11-06 22:14:55,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:55,211 INFO L225 Difference]: With dead ends: 51824 [2023-11-06 22:14:55,211 INFO L226 Difference]: Without dead ends: 34529 [2023-11-06 22:14:55,278 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 [2023-11-06 22:14:55,280 INFO L413 NwaCegarLoop]: 1857 mSDtfsCounter, 1793 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1793 SdHoareTripleChecker+Valid, 3660 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:55,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1793 Valid, 3660 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:14:55,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34529 states. [2023-11-06 22:14:57,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34529 to 34514. [2023-11-06 22:14:57,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34514 states, 28331 states have (on average 1.6077794641911687) internal successors, (45550), 28336 states have internal predecessors, (45550), 5542 states have call successors, (5542), 641 states have call predecessors, (5542), 640 states have return successors, (5536), 5536 states have call predecessors, (5536), 5536 states have call successors, (5536) [2023-11-06 22:14:57,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34514 states to 34514 states and 56628 transitions. [2023-11-06 22:14:57,846 INFO L78 Accepts]: Start accepts. Automaton has 34514 states and 56628 transitions. Word has length 47 [2023-11-06 22:14:57,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:57,848 INFO L495 AbstractCegarLoop]: Abstraction has 34514 states and 56628 transitions. [2023-11-06 22:14:57,849 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) [2023-11-06 22:14:57,849 INFO L276 IsEmpty]: Start isEmpty. Operand 34514 states and 56628 transitions. [2023-11-06 22:14:57,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-06 22:14:57,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:57,851 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, 1, 1] [2023-11-06 22:14:57,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:14:58,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:58,066 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:58,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:58,066 INFO L85 PathProgramCache]: Analyzing trace with hash 186897278, now seen corresponding path program 1 times [2023-11-06 22:14:58,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:58,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639081969] [2023-11-06 22:14:58,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:58,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:58,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:58,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639081969] [2023-11-06 22:14:58,568 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:14:58,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995358951] [2023-11-06 22:14:58,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:58,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:58,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:14:58,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:14:58,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:15:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:00,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 7002 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:15:00,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:00,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:00,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:00,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995358951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:00,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:00,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:15:00,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515851210] [2023-11-06 22:15:00,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:00,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:15:00,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:00,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:15:00,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:15:00,558 INFO L87 Difference]: Start difference. First operand 34514 states and 56628 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2023-11-06 22:15:02,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:02,798 INFO L93 Difference]: Finished difference Result 103408 states and 169686 transitions. [2023-11-06 22:15:02,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:15:02,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 51 [2023-11-06 22:15:02,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:03,340 INFO L225 Difference]: With dead ends: 103408 [2023-11-06 22:15:03,355 INFO L226 Difference]: Without dead ends: 68897 [2023-11-06 22:15:03,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:15:03,479 INFO L413 NwaCegarLoop]: 1865 mSDtfsCounter, 1789 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 3668 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 [2023-11-06 22:15:03,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1789 Valid, 3668 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:15:03,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68897 states. [2023-11-06 22:15:07,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68897 to 68882. [2023-11-06 22:15:07,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68882 states, 56587 states have (on average 1.6074009931609734) internal successors, (90958), 56592 states have internal predecessors, (90958), 11014 states have call successors, (11014), 1281 states have call predecessors, (11014), 1280 states have return successors, (11008), 11008 states have call predecessors, (11008), 11008 states have call successors, (11008) [2023-11-06 22:15:07,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68882 states to 68882 states and 112980 transitions. [2023-11-06 22:15:07,870 INFO L78 Accepts]: Start accepts. Automaton has 68882 states and 112980 transitions. Word has length 51 [2023-11-06 22:15:07,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:07,870 INFO L495 AbstractCegarLoop]: Abstraction has 68882 states and 112980 transitions. [2023-11-06 22:15:07,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2023-11-06 22:15:07,871 INFO L276 IsEmpty]: Start isEmpty. Operand 68882 states and 112980 transitions. [2023-11-06 22:15:07,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-06 22:15:07,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:07,876 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] [2023-11-06 22:15:07,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:08,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:15:08,091 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:08,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:08,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1420857310, now seen corresponding path program 1 times [2023-11-06 22:15:08,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:08,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601999901] [2023-11-06 22:15:08,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:08,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:08,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:08,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601999901] [2023-11-06 22:15:08,391 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:15:08,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187084462] [2023-11-06 22:15:08,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:08,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:08,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:08,393 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:15:08,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:15:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:10,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 6986 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:15:10,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:10,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:10,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:10,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187084462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:10,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:10,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:15:10,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556941509] [2023-11-06 22:15:10,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:10,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:15:10,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:10,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:15:10,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:15:10,342 INFO L87 Difference]: Start difference. First operand 68882 states and 112980 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) [2023-11-06 22:15:14,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:14,347 INFO L93 Difference]: Finished difference Result 206384 states and 338550 transitions. [2023-11-06 22:15:14,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:15:14,348 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 [2023-11-06 22:15:14,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:14,984 INFO L225 Difference]: With dead ends: 206384 [2023-11-06 22:15:14,987 INFO L226 Difference]: Without dead ends: 137505 [2023-11-06 22:15:15,204 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 [2023-11-06 22:15:15,206 INFO L413 NwaCegarLoop]: 1873 mSDtfsCounter, 1797 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 3676 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:15,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 3676 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:15:15,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137505 states. [2023-11-06 22:15:20,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137505 to 137490. [2023-11-06 22:15:21,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137490 states, 113035 states have (on average 1.60698898571239) internal successors, (181646), 113040 states have internal predecessors, (181646), 21894 states have call successors, (21894), 2561 states have call predecessors, (21894), 2560 states have return successors, (21888), 21888 states have call predecessors, (21888), 21888 states have call successors, (21888) [2023-11-06 22:15:22,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137490 states to 137490 states and 225428 transitions. [2023-11-06 22:15:22,311 INFO L78 Accepts]: Start accepts. Automaton has 137490 states and 225428 transitions. Word has length 43 [2023-11-06 22:15:22,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:22,311 INFO L495 AbstractCegarLoop]: Abstraction has 137490 states and 225428 transitions. [2023-11-06 22:15:22,312 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) [2023-11-06 22:15:22,312 INFO L276 IsEmpty]: Start isEmpty. Operand 137490 states and 225428 transitions. [2023-11-06 22:15:22,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-06 22:15:22,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:22,314 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] [2023-11-06 22:15:22,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:22,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:22,533 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:22,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:22,534 INFO L85 PathProgramCache]: Analyzing trace with hash 689400387, now seen corresponding path program 1 times [2023-11-06 22:15:22,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:22,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932178299] [2023-11-06 22:15:22,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:22,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:22,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:22,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932178299] [2023-11-06 22:15:22,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:15:22,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319332894] [2023-11-06 22:15:22,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:22,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:22,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:22,838 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:15:22,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc9acbb-6c6f-45bb-8ded-dd27eecb6e5a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:15:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:24,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 6980 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:15:24,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:24,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:24,475 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:24,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319332894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:24,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:24,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:15:24,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688344731] [2023-11-06 22:15:24,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:24,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:15:24,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:24,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:15:24,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:15:24,477 INFO L87 Difference]: Start difference. First operand 137490 states and 225428 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) [2023-11-06 22:15:32,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:32,368 INFO L93 Difference]: Finished difference Result 411952 states and 675510 transitions. [2023-11-06 22:15:32,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:15:32,369 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 [2023-11-06 22:15:32,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:34,134 INFO L225 Difference]: With dead ends: 411952 [2023-11-06 22:15:34,134 INFO L226 Difference]: Without dead ends: 274465 [2023-11-06 22:15:34,501 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 [2023-11-06 22:15:34,502 INFO L413 NwaCegarLoop]: 1881 mSDtfsCounter, 1800 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 3684 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 [2023-11-06 22:15:34,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1800 Valid, 3684 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:15:34,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274465 states.