./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--abituguru3.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5b2ce-da18-4a46-a92d-f1b4cd94f8af/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5b2ce-da18-4a46-a92d-f1b4cd94f8af/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5b2ce-da18-4a46-a92d-f1b4cd94f8af/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5b2ce-da18-4a46-a92d-f1b4cd94f8af/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5b2ce-da18-4a46-a92d-f1b4cd94f8af/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5b2ce-da18-4a46-a92d-f1b4cd94f8af/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:56:16,578 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:16,698 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5b2ce-da18-4a46-a92d-f1b4cd94f8af/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 07:56:16,706 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:16,707 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:16,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:16,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:16,747 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:16,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:56:16,753 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:56:16,754 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:16,755 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:16,755 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:16,757 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:16,757 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:56:16,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:56:16,758 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:16,758 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:56:16,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:56:16,759 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:56:16,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:56:16,760 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:16,761 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:16,763 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:16,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:56:16,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:16,764 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:16,765 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:56:16,765 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:56:16,765 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:56:16,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:56:16,767 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:56:16,767 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:56:16,768 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:56:16,768 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:56:16,768 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:56:16,768 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_e5d5b2ce-da18-4a46-a92d-f1b4cd94f8af/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5b2ce-da18-4a46-a92d-f1b4cd94f8af/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 [2023-11-19 07:56:17,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:56:17,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:56:17,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:56:17,111 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:56:17,112 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:56:17,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5b2ce-da18-4a46-a92d-f1b4cd94f8af/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2023-11-19 07:56:20,265 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:56:20,770 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:56:20,771 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5b2ce-da18-4a46-a92d-f1b4cd94f8af/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2023-11-19 07:56:20,811 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5b2ce-da18-4a46-a92d-f1b4cd94f8af/bin/uautomizer-verify-uCwYo4JHxu/data/920be6ab7/3c698dce36b74322b436d4f91c8db2d6/FLAG5a76ee359 [2023-11-19 07:56:20,825 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5b2ce-da18-4a46-a92d-f1b4cd94f8af/bin/uautomizer-verify-uCwYo4JHxu/data/920be6ab7/3c698dce36b74322b436d4f91c8db2d6 [2023-11-19 07:56:20,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:56:20,829 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:56:20,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:20,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:56:20,837 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:56:20,837 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:20" (1/1) ... [2023-11-19 07:56:20,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cef1e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:20, skipping insertion in model container [2023-11-19 07:56:20,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:20" (1/1) ... [2023-11-19 07:56:20,935 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:56:21,963 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_e5d5b2ce-da18-4a46-a92d-f1b4cd94f8af/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2023-11-19 07:56:22,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:22,164 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:56:22,223 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [1076] [2023-11-19 07:56:22,225 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [1083] [2023-11-19 07:56:22,468 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_e5d5b2ce-da18-4a46-a92d-f1b4cd94f8af/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2023-11-19 07:56:22,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:22,662 WARN L675 CHandler]: The function strcspn is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:56:22,662 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:56:22,671 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:56:22,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:22 WrapperNode [2023-11-19 07:56:22,672 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:22,673 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:22,673 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:56:22,674 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:56:22,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:22" (1/1) ... [2023-11-19 07:56:22,854 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:22" (1/1) ... [2023-11-19 07:56:23,171 INFO L138 Inliner]: procedures = 133, calls = 5580, calls flagged for inlining = 57, calls inlined = 51, statements flattened = 6709 [2023-11-19 07:56:23,172 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:23,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:56:23,173 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:56:23,174 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:56:23,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:22" (1/1) ... [2023-11-19 07:56:23,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:22" (1/1) ... [2023-11-19 07:56:23,268 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:22" (1/1) ... [2023-11-19 07:56:23,275 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:22" (1/1) ... [2023-11-19 07:56:23,529 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:22" (1/1) ... [2023-11-19 07:56:23,607 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:22" (1/1) ... [2023-11-19 07:56:23,633 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:22" (1/1) ... [2023-11-19 07:56:23,660 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:22" (1/1) ... [2023-11-19 07:56:23,704 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:56:23,705 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:56:23,706 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:56:23,706 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:56:23,707 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:22" (1/1) ... [2023-11-19 07:56:23,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:23,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5b2ce-da18-4a46-a92d-f1b4cd94f8af/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:23,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5b2ce-da18-4a46-a92d-f1b4cd94f8af/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:23,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5b2ce-da18-4a46-a92d-f1b4cd94f8af/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:56:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_while_busy [2023-11-19 07:56:23,786 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_while_busy [2023-11-19 07:56:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-19 07:56:23,786 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-19 07:56:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_for_read [2023-11-19 07:56:23,787 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_for_read [2023-11-19 07:56:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-19 07:56:23,787 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-19 07:56:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2023-11-19 07:56:23,788 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2023-11-19 07:56:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure dmi_get_system_info [2023-11-19 07:56:23,790 INFO L138 BoogieDeclarations]: Found implementation of procedure dmi_get_system_info [2023-11-19 07:56:23,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:56:23,790 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read [2023-11-19 07:56:23,790 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read [2023-11-19 07:56:23,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 07:56:23,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 07:56:23,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:56:23,791 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 07:56:23,792 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 07:56:23,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 07:56:23,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 07:56:23,792 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2023-11-19 07:56:23,793 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2023-11-19 07:56:23,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2023-11-19 07:56:23,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2023-11-19 07:56:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_suspend [2023-11-19 07:56:23,794 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_suspend [2023-11-19 07:56:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read_increment_offset [2023-11-19 07:56:23,795 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read_increment_offset [2023-11-19 07:56:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:56:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2023-11-19 07:56:23,796 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2023-11-19 07:56:23,797 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-19 07:56:23,797 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-19 07:56:23,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:56:23,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:56:23,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:56:23,798 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_update_device [2023-11-19 07:56:23,798 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_update_device [2023-11-19 07:56:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:56:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:56:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure platform_set_drvdata [2023-11-19 07:56:23,799 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_set_drvdata [2023-11-19 07:56:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:56:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2023-11-19 07:56:23,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2023-11-19 07:56:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 07:56:23,800 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 07:56:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2023-11-19 07:56:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-19 07:56:23,801 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-19 07:56:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-19 07:56:23,802 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-19 07:56:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:56:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2023-11-19 07:56:23,802 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2023-11-19 07:56:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:56:23,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:56:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_resume [2023-11-19 07:56:23,803 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_resume [2023-11-19 07:56:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 07:56:23,804 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 07:56:24,166 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:56:24,169 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:56:40,147 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:56:40,170 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:56:40,170 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:56:40,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:40 BoogieIcfgContainer [2023-11-19 07:56:40,186 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:56:40,189 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:56:40,189 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:56:40,193 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:56:40,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:56:20" (1/3) ... [2023-11-19 07:56:40,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a097b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:40, skipping insertion in model container [2023-11-19 07:56:40,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:22" (2/3) ... [2023-11-19 07:56:40,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a097b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:40, skipping insertion in model container [2023-11-19 07:56:40,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:40" (3/3) ... [2023-11-19 07:56:40,197 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2023-11-19 07:56:40,220 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:56:40,220 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:56:40,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:40,315 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@48772757, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:40,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:56:40,326 INFO L276 IsEmpty]: Start isEmpty. Operand has 550 states, 424 states have (on average 1.4150943396226414) internal successors, (600), 433 states have internal predecessors, (600), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-19 07:56:40,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 07:56:40,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:40,344 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] [2023-11-19 07:56:40,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:40,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:40,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2056568636, now seen corresponding path program 1 times [2023-11-19 07:56:40,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:40,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625033099] [2023-11-19 07:56:40,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:40,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:42,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:56:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:42,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:42,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:42,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625033099] [2023-11-19 07:56:42,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625033099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:42,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:42,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:56:42,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223412351] [2023-11-19 07:56:42,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:42,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:42,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:42,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:42,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:42,758 INFO L87 Difference]: Start difference. First operand has 550 states, 424 states have (on average 1.4150943396226414) internal successors, (600), 433 states have internal predecessors, (600), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:56:43,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:43,521 INFO L93 Difference]: Finished difference Result 1548 states and 2297 transitions. [2023-11-19 07:56:43,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:43,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-11-19 07:56:43,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:43,589 INFO L225 Difference]: With dead ends: 1548 [2023-11-19 07:56:43,590 INFO L226 Difference]: Without dead ends: 997 [2023-11-19 07:56:43,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:43,620 INFO L413 NwaCegarLoop]: 1141 mSDtfsCounter, 758 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:43,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1812 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:56:43,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-11-19 07:56:43,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 993. [2023-11-19 07:56:43,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 766 states have (on average 1.4177545691906006) internal successors, (1086), 776 states have internal predecessors, (1086), 179 states have call successors, (179), 48 states have call predecessors, (179), 47 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) [2023-11-19 07:56:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1439 transitions. [2023-11-19 07:56:43,802 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1439 transitions. Word has length 21 [2023-11-19 07:56:43,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:43,803 INFO L495 AbstractCegarLoop]: Abstraction has 993 states and 1439 transitions. [2023-11-19 07:56:43,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:56:43,804 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1439 transitions. [2023-11-19 07:56:43,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 07:56:43,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:43,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:43,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:56:43,813 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:43,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:43,814 INFO L85 PathProgramCache]: Analyzing trace with hash -220462620, now seen corresponding path program 1 times [2023-11-19 07:56:43,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:43,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642055528] [2023-11-19 07:56:43,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:43,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:45,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:56:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:45,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:56:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:45,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:45,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642055528] [2023-11-19 07:56:45,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642055528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:45,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:45,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:56:45,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853781290] [2023-11-19 07:56:45,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:45,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:56:45,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:45,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:56:45,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:56:45,101 INFO L87 Difference]: Start difference. First operand 993 states and 1439 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:56:47,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:47,738 INFO L93 Difference]: Finished difference Result 2944 states and 4259 transitions. [2023-11-19 07:56:47,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:56:47,740 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2023-11-19 07:56:47,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:47,769 INFO L225 Difference]: With dead ends: 2944 [2023-11-19 07:56:47,769 INFO L226 Difference]: Without dead ends: 1954 [2023-11-19 07:56:47,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:56:47,782 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 833 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:47,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1496 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-19 07:56:47,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2023-11-19 07:56:47,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1757. [2023-11-19 07:56:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1757 states, 1339 states have (on average 1.3846153846153846) internal successors, (1854), 1355 states have internal predecessors, (1854), 328 states have call successors, (328), 90 states have call predecessors, (328), 89 states have return successors, (323), 323 states have call predecessors, (323), 323 states have call successors, (323) [2023-11-19 07:56:47,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 2505 transitions. [2023-11-19 07:56:47,967 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 2505 transitions. Word has length 33 [2023-11-19 07:56:47,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:47,968 INFO L495 AbstractCegarLoop]: Abstraction has 1757 states and 2505 transitions. [2023-11-19 07:56:47,968 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:56:47,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 2505 transitions. [2023-11-19 07:56:47,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 07:56:47,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:47,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:47,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:56:47,974 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:47,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:47,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2017300398, now seen corresponding path program 1 times [2023-11-19 07:56:47,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:47,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243404039] [2023-11-19 07:56:47,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:47,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:50,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:56:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:50,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:56:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:50,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:50,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:50,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243404039] [2023-11-19 07:56:50,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243404039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:50,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:50,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:56:50,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529315674] [2023-11-19 07:56:50,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:50,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:56:50,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:50,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:56:50,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:56:50,369 INFO L87 Difference]: Start difference. First operand 1757 states and 2505 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:56:54,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:54,003 INFO L93 Difference]: Finished difference Result 4450 states and 6532 transitions. [2023-11-19 07:56:54,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:56:54,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2023-11-19 07:56:54,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:54,028 INFO L225 Difference]: With dead ends: 4450 [2023-11-19 07:56:54,028 INFO L226 Difference]: Without dead ends: 2696 [2023-11-19 07:56:54,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:56:54,050 INFO L413 NwaCegarLoop]: 980 mSDtfsCounter, 663 mSDsluCounter, 3993 mSDsCounter, 0 mSdLazyCounter, 1738 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 4973 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:54,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 4973 Invalid, 1825 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [87 Valid, 1738 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-19 07:56:54,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2023-11-19 07:56:54,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 1779. [2023-11-19 07:56:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1357 states have (on average 1.3839351510685336) internal successors, (1878), 1373 states have internal predecessors, (1878), 332 states have call successors, (332), 90 states have call predecessors, (332), 89 states have return successors, (327), 327 states have call predecessors, (327), 327 states have call successors, (327) [2023-11-19 07:56:54,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2537 transitions. [2023-11-19 07:56:54,189 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2537 transitions. Word has length 33 [2023-11-19 07:56:54,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:54,189 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 2537 transitions. [2023-11-19 07:56:54,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:56:54,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2537 transitions. [2023-11-19 07:56:54,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 07:56:54,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:54,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:54,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:56:54,192 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:54,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:54,193 INFO L85 PathProgramCache]: Analyzing trace with hash 472228564, now seen corresponding path program 1 times [2023-11-19 07:56:54,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:54,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291368849] [2023-11-19 07:56:54,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:54,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:55,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:56:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:55,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:56:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:55,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:55,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:55,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291368849] [2023-11-19 07:56:55,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291368849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:55,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:55,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:56:55,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104274306] [2023-11-19 07:56:55,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:55,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:56:55,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:55,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:56:55,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:56:55,192 INFO L87 Difference]: Start difference. First operand 1779 states and 2537 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:56:56,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:56,664 INFO L93 Difference]: Finished difference Result 1975 states and 2857 transitions. [2023-11-19 07:56:56,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:56:56,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2023-11-19 07:56:56,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:56,680 INFO L225 Difference]: With dead ends: 1975 [2023-11-19 07:56:56,680 INFO L226 Difference]: Without dead ends: 1966 [2023-11-19 07:56:56,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:56:56,683 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 898 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:56,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 992 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 07:56:56,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2023-11-19 07:56:56,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1779. [2023-11-19 07:56:56,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1357 states have (on average 1.3831982313927782) internal successors, (1877), 1373 states have internal predecessors, (1877), 332 states have call successors, (332), 90 states have call predecessors, (332), 89 states have return successors, (327), 327 states have call predecessors, (327), 327 states have call successors, (327) [2023-11-19 07:56:56,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2536 transitions. [2023-11-19 07:56:56,809 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2536 transitions. Word has length 33 [2023-11-19 07:56:56,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:56,810 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 2536 transitions. [2023-11-19 07:56:56,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:56:56,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2536 transitions. [2023-11-19 07:56:56,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 07:56:56,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:56,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:56,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:56:56,815 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:56,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:56,820 INFO L85 PathProgramCache]: Analyzing trace with hash 529486866, now seen corresponding path program 1 times [2023-11-19 07:56:56,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:56,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612641940] [2023-11-19 07:56:56,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:56,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:57,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:56:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:57,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:56:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:57,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:57,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612641940] [2023-11-19 07:56:57,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612641940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:57,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:57,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:56:57,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559822947] [2023-11-19 07:56:57,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:57,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:56:57,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:57,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:56:57,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:56:57,839 INFO L87 Difference]: Start difference. First operand 1779 states and 2536 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:56:59,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:59,233 INFO L93 Difference]: Finished difference Result 1959 states and 2837 transitions. [2023-11-19 07:56:59,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:56:59,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2023-11-19 07:56:59,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:59,254 INFO L225 Difference]: With dead ends: 1959 [2023-11-19 07:56:59,254 INFO L226 Difference]: Without dead ends: 1956 [2023-11-19 07:56:59,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:56:59,257 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 880 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:59,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 965 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 07:56:59,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2023-11-19 07:56:59,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1778. [2023-11-19 07:56:59,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1357 states have (on average 1.3824613117170228) internal successors, (1876), 1372 states have internal predecessors, (1876), 331 states have call successors, (331), 90 states have call predecessors, (331), 89 states have return successors, (327), 327 states have call predecessors, (327), 327 states have call successors, (327) [2023-11-19 07:56:59,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2534 transitions. [2023-11-19 07:56:59,387 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2534 transitions. Word has length 33 [2023-11-19 07:56:59,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:59,389 INFO L495 AbstractCegarLoop]: Abstraction has 1778 states and 2534 transitions. [2023-11-19 07:56:59,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:56:59,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2534 transitions. [2023-11-19 07:56:59,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 07:56:59,391 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:59,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:59,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:56:59,392 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:59,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:59,392 INFO L85 PathProgramCache]: Analyzing trace with hash -765997591, now seen corresponding path program 1 times [2023-11-19 07:56:59,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:59,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105347515] [2023-11-19 07:56:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:59,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:00,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:57:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:00,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:57:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:00,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:00,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:00,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105347515] [2023-11-19 07:57:00,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105347515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:00,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:00,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:00,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521975103] [2023-11-19 07:57:00,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:00,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:00,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:00,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:00,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:00,309 INFO L87 Difference]: Start difference. First operand 1778 states and 2534 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:57:01,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:01,634 INFO L93 Difference]: Finished difference Result 1958 states and 2835 transitions. [2023-11-19 07:57:01,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:01,635 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), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2023-11-19 07:57:01,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:01,649 INFO L225 Difference]: With dead ends: 1958 [2023-11-19 07:57:01,650 INFO L226 Difference]: Without dead ends: 1955 [2023-11-19 07:57:01,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:01,653 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 877 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:01,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 962 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 07:57:01,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2023-11-19 07:57:01,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 1777. [2023-11-19 07:57:01,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1357 states have (on average 1.3817243920412674) internal successors, (1875), 1371 states have internal predecessors, (1875), 330 states have call successors, (330), 90 states have call predecessors, (330), 89 states have return successors, (327), 327 states have call predecessors, (327), 327 states have call successors, (327) [2023-11-19 07:57:01,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2532 transitions. [2023-11-19 07:57:01,777 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2532 transitions. Word has length 34 [2023-11-19 07:57:01,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:01,777 INFO L495 AbstractCegarLoop]: Abstraction has 1777 states and 2532 transitions. [2023-11-19 07:57:01,777 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), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:57:01,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2532 transitions. [2023-11-19 07:57:01,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 07:57:01,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:01,779 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] [2023-11-19 07:57:01,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:57:01,779 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:01,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:01,780 INFO L85 PathProgramCache]: Analyzing trace with hash 2023662069, now seen corresponding path program 1 times [2023-11-19 07:57:01,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:01,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040347094] [2023-11-19 07:57:01,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:01,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:02,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:57:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:02,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:57:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:02,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:02,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:02,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040347094] [2023-11-19 07:57:02,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040347094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:02,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:02,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:02,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89246448] [2023-11-19 07:57:02,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:02,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:02,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:02,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:02,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:02,685 INFO L87 Difference]: Start difference. First operand 1777 states and 2532 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)