./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8f1691-a5a1-4d86-b97f-bedd46f48125/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8f1691-a5a1-4d86-b97f-bedd46f48125/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_7d8f1691-a5a1-4d86-b97f-bedd46f48125/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8f1691-a5a1-4d86-b97f-bedd46f48125/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8f1691-a5a1-4d86-b97f-bedd46f48125/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_7d8f1691-a5a1-4d86-b97f-bedd46f48125/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 32c3d0de0693c88d7932ff8b6e02d1235a8aa90cfbd4ebc203b8adf917998be1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:40:35,250 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:40:35,322 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8f1691-a5a1-4d86-b97f-bedd46f48125/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 07:40:35,338 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:40:35,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:40:35,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:40:35,377 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:40:35,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:40:35,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:40:35,385 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:40:35,387 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:40:35,388 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:40:35,388 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:40:35,390 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:40:35,391 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:40:35,391 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:40:35,392 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:40:35,392 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:40:35,393 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:40:35,393 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:40:35,394 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:40:35,394 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:40:35,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:40:35,396 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:40:35,396 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:40:35,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:35,397 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:40:35,398 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:40:35,398 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:40:35,399 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:40:35,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:40:35,401 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:40:35,401 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:40:35,401 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:40:35,402 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:40:35,402 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:40:35,402 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_7d8f1691-a5a1-4d86-b97f-bedd46f48125/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8f1691-a5a1-4d86-b97f-bedd46f48125/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32c3d0de0693c88d7932ff8b6e02d1235a8aa90cfbd4ebc203b8adf917998be1 [2023-11-19 07:40:35,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:40:35,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:40:35,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:40:35,719 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:40:35,720 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:40:35,721 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8f1691-a5a1-4d86-b97f-bedd46f48125/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2023-11-19 07:40:38,771 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:40:39,341 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:40:39,342 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8f1691-a5a1-4d86-b97f-bedd46f48125/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2023-11-19 07:40:39,385 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8f1691-a5a1-4d86-b97f-bedd46f48125/bin/uautomizer-verify-uCwYo4JHxu/data/771ca278f/c2739d675dd04d099c7854b55f318db3/FLAG586f64b8e [2023-11-19 07:40:39,402 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8f1691-a5a1-4d86-b97f-bedd46f48125/bin/uautomizer-verify-uCwYo4JHxu/data/771ca278f/c2739d675dd04d099c7854b55f318db3 [2023-11-19 07:40:39,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:40:39,406 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:40:39,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:39,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:40:39,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:40:39,419 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:39" (1/1) ... [2023-11-19 07:40:39,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@695b690f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:39, skipping insertion in model container [2023-11-19 07:40:39,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:39" (1/1) ... [2023-11-19 07:40:39,542 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:40:40,641 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_7d8f1691-a5a1-4d86-b97f-bedd46f48125/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2023-11-19 07:40:40,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:40,825 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:40:40,892 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [2571] [2023-11-19 07:40:40,894 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [2579] [2023-11-19 07:40:41,132 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_7d8f1691-a5a1-4d86-b97f-bedd46f48125/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2023-11-19 07:40:41,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:41,383 WARN L675 CHandler]: The function strcspn is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:40:41,384 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:40:41,391 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:40:41,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41 WrapperNode [2023-11-19 07:40:41,393 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:41,394 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:41,394 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:40:41,395 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:40:41,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:41,547 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:41,814 INFO L138 Inliner]: procedures = 165, calls = 5886, calls flagged for inlining = 57, calls inlined = 52, statements flattened = 7071 [2023-11-19 07:40:41,815 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:41,816 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:40:41,817 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:40:41,817 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:40:41,827 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:41,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:41,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:41,955 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:42,119 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:42,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:42,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:42,200 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:42,251 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:40:42,252 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:40:42,253 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:40:42,253 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:40:42,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (1/1) ... [2023-11-19 07:40:42,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:42,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8f1691-a5a1-4d86-b97f-bedd46f48125/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:42,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8f1691-a5a1-4d86-b97f-bedd46f48125/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:42,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d8f1691-a5a1-4d86-b97f-bedd46f48125/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:40:42,443 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_while_busy [2023-11-19 07:40:42,443 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_while_busy [2023-11-19 07:40:42,443 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-19 07:40:42,443 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-19 07:40:42,444 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_for_read [2023-11-19 07:40:42,444 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_for_read [2023-11-19 07:40:42,444 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-19 07:40:42,444 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-19 07:40:42,444 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2023-11-19 07:40:42,444 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2023-11-19 07:40:42,445 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_remove [2023-11-19 07:40:42,446 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_remove [2023-11-19 07:40:42,447 INFO L130 BoogieDeclarations]: Found specification of procedure dmi_get_system_info [2023-11-19 07:40:42,447 INFO L138 BoogieDeclarations]: Found implementation of procedure dmi_get_system_info [2023-11-19 07:40:42,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 07:40:42,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 07:40:42,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:40:42,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 07:40:42,448 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 07:40:42,448 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read [2023-11-19 07:40:42,448 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read [2023-11-19 07:40:42,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 07:40:42,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 07:40:42,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:40:42,450 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 07:40:42,450 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 07:40:42,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 07:40:42,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 07:40:42,450 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_probe [2023-11-19 07:40:42,451 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_probe [2023-11-19 07:40:42,452 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-19 07:40:42,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-19 07:40:42,452 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2023-11-19 07:40:42,453 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2023-11-19 07:40:42,453 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2023-11-19 07:40:42,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2023-11-19 07:40:42,453 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 07:40:42,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 07:40:42,454 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_suspend [2023-11-19 07:40:42,454 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_suspend [2023-11-19 07:40:42,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-19 07:40:42,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-19 07:40:42,454 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:40:42,455 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:40:42,455 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read_increment_offset [2023-11-19 07:40:42,455 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read_increment_offset [2023-11-19 07:40:42,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:40:42,455 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2023-11-19 07:40:42,455 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2023-11-19 07:40:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-19 07:40:42,456 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-19 07:40:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:40:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:40:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:40:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_update_device [2023-11-19 07:40:42,457 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_update_device [2023-11-19 07:40:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:40:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 07:40:42,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 07:40:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:40:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:40:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2023-11-19 07:40:42,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2023-11-19 07:40:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 07:40:42,458 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 07:40:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2023-11-19 07:40:42,459 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-19 07:40:42,460 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-19 07:40:42,460 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-19 07:40:42,461 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-19 07:40:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:40:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2023-11-19 07:40:42,461 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2023-11-19 07:40:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:40:42,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:40:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_resume [2023-11-19 07:40:42,463 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_resume [2023-11-19 07:40:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 07:40:42,463 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 07:40:42,859 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:40:42,863 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:40:45,841 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 07:40:59,092 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:40:59,114 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:40:59,114 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:40:59,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:59 BoogieIcfgContainer [2023-11-19 07:40:59,136 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:40:59,139 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:40:59,140 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:40:59,144 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:40:59,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:40:39" (1/3) ... [2023-11-19 07:40:59,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50be4480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:59, skipping insertion in model container [2023-11-19 07:40:59,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:41" (2/3) ... [2023-11-19 07:40:59,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50be4480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:59, skipping insertion in model container [2023-11-19 07:40:59,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:59" (3/3) ... [2023-11-19 07:40:59,150 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2023-11-19 07:40:59,175 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:40:59,175 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:40:59,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:59,298 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;@63ac8d0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:59,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:40:59,313 INFO L276 IsEmpty]: Start isEmpty. Operand has 602 states, 446 states have (on average 1.4304932735426008) internal successors, (638), 471 states have internal predecessors, (638), 122 states have call successors, (122), 33 states have call predecessors, (122), 32 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) [2023-11-19 07:40:59,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:40:59,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:59,345 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] [2023-11-19 07:40:59,346 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:59,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:59,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1065199801, now seen corresponding path program 1 times [2023-11-19 07:40:59,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:59,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994718214] [2023-11-19 07:40:59,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:59,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:01,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 07:41:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:01,540 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 07:41:01,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:01,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994718214] [2023-11-19 07:41:01,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994718214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:01,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:01,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:01,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874793672] [2023-11-19 07:41:01,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:01,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:01,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:01,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:01,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:01,617 INFO L87 Difference]: Start difference. First operand has 602 states, 446 states have (on average 1.4304932735426008) internal successors, (638), 471 states have internal predecessors, (638), 122 states have call successors, (122), 33 states have call predecessors, (122), 32 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:41:02,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:02,446 INFO L93 Difference]: Finished difference Result 1689 states and 2487 transitions. [2023-11-19 07:41:02,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:02,449 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-19 07:41:02,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:02,475 INFO L225 Difference]: With dead ends: 1689 [2023-11-19 07:41:02,476 INFO L226 Difference]: Without dead ends: 1073 [2023-11-19 07:41:02,485 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 07:41:02,489 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 683 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:02,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1697 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:41:02,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2023-11-19 07:41:02,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1059. [2023-11-19 07:41:02,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 780 states have (on average 1.3923076923076922) internal successors, (1086), 815 states have internal predecessors, (1086), 218 states have call successors, (218), 61 states have call predecessors, (218), 60 states have return successors, (213), 212 states have call predecessors, (213), 213 states have call successors, (213) [2023-11-19 07:41:02,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1517 transitions. [2023-11-19 07:41:02,637 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1517 transitions. Word has length 23 [2023-11-19 07:41:02,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:02,638 INFO L495 AbstractCegarLoop]: Abstraction has 1059 states and 1517 transitions. [2023-11-19 07:41:02,638 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:41:02,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1517 transitions. [2023-11-19 07:41:02,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 07:41:02,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:02,641 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 07:41:02,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:41:02,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:02,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:02,642 INFO L85 PathProgramCache]: Analyzing trace with hash -997075582, now seen corresponding path program 1 times [2023-11-19 07:41:02,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:02,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580568620] [2023-11-19 07:41:02,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:02,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:04,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:41:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:04,335 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 07:41:04,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:04,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580568620] [2023-11-19 07:41:04,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580568620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:04,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:04,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:04,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105153307] [2023-11-19 07:41:04,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:04,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:04,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:04,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:04,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:04,340 INFO L87 Difference]: Start difference. First operand 1059 states and 1517 transitions. 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 07:41:04,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:04,841 INFO L93 Difference]: Finished difference Result 2990 states and 4287 transitions. [2023-11-19 07:41:04,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:04,842 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 07:41:04,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:04,860 INFO L225 Difference]: With dead ends: 2990 [2023-11-19 07:41:04,860 INFO L226 Difference]: Without dead ends: 1934 [2023-11-19 07:41:04,866 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 07:41:04,868 INFO L413 NwaCegarLoop]: 1443 mSDtfsCounter, 824 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 2177 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:04,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 2177 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:41:04,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2023-11-19 07:41:04,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1925. [2023-11-19 07:41:04,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1414 states have (on average 1.396039603960396) internal successors, (1974), 1476 states have internal predecessors, (1974), 395 states have call successors, (395), 116 states have call predecessors, (395), 115 states have return successors, (390), 390 states have call predecessors, (390), 390 states have call successors, (390) [2023-11-19 07:41:05,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 2759 transitions. [2023-11-19 07:41:05,023 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 2759 transitions. Word has length 21 [2023-11-19 07:41:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:05,026 INFO L495 AbstractCegarLoop]: Abstraction has 1925 states and 2759 transitions. [2023-11-19 07:41:05,026 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 07:41:05,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 2759 transitions. [2023-11-19 07:41:05,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:41:05,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:05,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:05,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:41:05,037 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:05,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:05,039 INFO L85 PathProgramCache]: Analyzing trace with hash -2026886032, now seen corresponding path program 1 times [2023-11-19 07:41:05,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:05,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170259289] [2023-11-19 07:41:05,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:05,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:06,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:41:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:06,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:41:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:06,327 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 07:41:06,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:06,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170259289] [2023-11-19 07:41:06,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170259289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:06,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:06,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:41:06,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809219230] [2023-11-19 07:41:06,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:06,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:06,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:06,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:06,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:06,332 INFO L87 Difference]: Start difference. First operand 1925 states and 2759 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 07:41:08,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:08,031 INFO L93 Difference]: Finished difference Result 2009 states and 2904 transitions. [2023-11-19 07:41:08,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:41:08,032 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), 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 30 [2023-11-19 07:41:08,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:08,051 INFO L225 Difference]: With dead ends: 2009 [2023-11-19 07:41:08,051 INFO L226 Difference]: Without dead ends: 2006 [2023-11-19 07:41:08,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 07:41:08,055 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 865 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:08,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 1203 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 07:41:08,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2023-11-19 07:41:08,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1924. [2023-11-19 07:41:08,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1414 states have (on average 1.3953323903818953) internal successors, (1973), 1475 states have internal predecessors, (1973), 394 states have call successors, (394), 116 states have call predecessors, (394), 115 states have return successors, (390), 390 states have call predecessors, (390), 390 states have call successors, (390) [2023-11-19 07:41:08,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2757 transitions. [2023-11-19 07:41:08,193 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2757 transitions. Word has length 30 [2023-11-19 07:41:08,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:08,196 INFO L495 AbstractCegarLoop]: Abstraction has 1924 states and 2757 transitions. [2023-11-19 07:41:08,198 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), 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 07:41:08,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2757 transitions. [2023-11-19 07:41:08,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 07:41:08,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:08,201 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] [2023-11-19 07:41:08,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:41:08,203 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:08,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:08,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1590933901, now seen corresponding path program 1 times [2023-11-19 07:41:08,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:08,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831734502] [2023-11-19 07:41:08,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:08,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:09,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:41:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:09,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:41:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:09,461 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 07:41:09,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:09,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831734502] [2023-11-19 07:41:09,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831734502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:09,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:09,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:41:09,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189664051] [2023-11-19 07:41:09,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:09,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:09,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:09,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:09,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:09,466 INFO L87 Difference]: Start difference. First operand 1924 states and 2757 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 07:41:11,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:11,078 INFO L93 Difference]: Finished difference Result 2008 states and 2902 transitions. [2023-11-19 07:41:11,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:41:11,079 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), 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 31 [2023-11-19 07:41:11,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:11,098 INFO L225 Difference]: With dead ends: 2008 [2023-11-19 07:41:11,098 INFO L226 Difference]: Without dead ends: 2005 [2023-11-19 07:41:11,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 07:41:11,102 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 862 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:11,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 1200 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 07:41:11,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2023-11-19 07:41:11,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1923. [2023-11-19 07:41:11,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1414 states have (on average 1.3946251768033946) internal successors, (1972), 1474 states have internal predecessors, (1972), 393 states have call successors, (393), 116 states have call predecessors, (393), 115 states have return successors, (390), 390 states have call predecessors, (390), 390 states have call successors, (390) [2023-11-19 07:41:11,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2755 transitions. [2023-11-19 07:41:11,238 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2755 transitions. Word has length 31 [2023-11-19 07:41:11,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:11,239 INFO L495 AbstractCegarLoop]: Abstraction has 1923 states and 2755 transitions. [2023-11-19 07:41:11,239 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), 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 07:41:11,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2755 transitions. [2023-11-19 07:41:11,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 07:41:11,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:11,243 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] [2023-11-19 07:41:11,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:41:11,244 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:11,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:11,244 INFO L85 PathProgramCache]: Analyzing trace with hash 2074206995, now seen corresponding path program 1 times [2023-11-19 07:41:11,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:11,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341906994] [2023-11-19 07:41:11,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:11,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:12,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:41:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:12,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:41:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:12,509 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 07:41:12,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:12,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341906994] [2023-11-19 07:41:12,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341906994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:12,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:12,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:41:12,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584138321] [2023-11-19 07:41:12,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:12,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:12,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:12,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:12,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:12,512 INFO L87 Difference]: Start difference. First operand 1923 states and 2755 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 07:41:14,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:14,655 INFO L93 Difference]: Finished difference Result 5431 states and 7839 transitions. [2023-11-19 07:41:14,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:41:14,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 32 [2023-11-19 07:41:14,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:14,692 INFO L225 Difference]: With dead ends: 5431 [2023-11-19 07:41:14,692 INFO L226 Difference]: Without dead ends: 3499 [2023-11-19 07:41:14,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 07:41:14,708 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 887 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:14,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 1765 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-19 07:41:14,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3499 states. [2023-11-19 07:41:14,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3499 to 3396. [2023-11-19 07:41:14,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 2491 states have (on average 1.3918105178643114) internal successors, (3467), 2620 states have internal predecessors, (3467), 709 states have call successors, (709), 209 states have call predecessors, (709), 195 states have return successors, (703), 682 states have call predecessors, (703), 699 states have call successors, (703) [2023-11-19 07:41:15,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 4879 transitions. [2023-11-19 07:41:15,027 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 4879 transitions. Word has length 32 [2023-11-19 07:41:15,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:15,028 INFO L495 AbstractCegarLoop]: Abstraction has 3396 states and 4879 transitions. [2023-11-19 07:41:15,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 07:41:15,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 4879 transitions. [2023-11-19 07:41:15,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 07:41:15,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:15,034 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:15,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:41:15,035 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:15,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:15,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1031804101, now seen corresponding path program 1 times [2023-11-19 07:41:15,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:15,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696872570] [2023-11-19 07:41:15,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:15,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:41:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:41:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-19 07:41:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:41:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:41:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-19 07:41:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:16,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:16,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696872570] [2023-11-19 07:41:16,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696872570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:16,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:16,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:41:16,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016722133] [2023-11-19 07:41:16,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:16,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:41:16,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:16,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:41:16,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:41:16,858 INFO L87 Difference]: Start difference. First operand 3396 states and 4879 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:41:21,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:41:23,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []