./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-aloop.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_840a9cc5-75e9-4b92-a12b-6fa2fbffb5e8/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840a9cc5-75e9-4b92-a12b-6fa2fbffb5e8/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840a9cc5-75e9-4b92-a12b-6fa2fbffb5e8/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840a9cc5-75e9-4b92-a12b-6fa2fbffb5e8/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-aloop.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840a9cc5-75e9-4b92-a12b-6fa2fbffb5e8/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840a9cc5-75e9-4b92-a12b-6fa2fbffb5e8/bin/uautomizer-verify-uTZkv6EMXl --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 0b0b41862c2f2ed85815e97691c99c06d3eb1c9f09c717c7d2a79de23098870a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:23:55,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:23:55,330 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840a9cc5-75e9-4b92-a12b-6fa2fbffb5e8/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-12 02:23:55,337 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:23:55,338 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:23:55,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:23:55,371 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:23:55,371 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:23:55,372 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:23:55,377 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:23:55,379 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:23:55,379 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:23:55,379 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:23:55,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:23:55,382 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:23:55,382 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:23:55,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:23:55,383 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:23:55,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:23:55,384 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:23:55,384 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:23:55,384 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:23:55,385 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:23:55,386 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:23:55,386 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:23:55,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:23:55,387 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:23:55,387 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:23:55,388 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:23:55,388 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:23:55,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:23:55,390 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:23:55,390 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:23:55,390 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:23:55,390 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:23:55,391 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:23:55,391 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_840a9cc5-75e9-4b92-a12b-6fa2fbffb5e8/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840a9cc5-75e9-4b92-a12b-6fa2fbffb5e8/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b0b41862c2f2ed85815e97691c99c06d3eb1c9f09c717c7d2a79de23098870a [2023-11-12 02:23:55,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:23:55,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:23:55,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:23:55,760 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:23:55,761 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:23:55,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840a9cc5-75e9-4b92-a12b-6fa2fbffb5e8/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-aloop.ko-entry_point.cil.out.i [2023-11-12 02:23:58,839 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:23:59,493 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:23:59,493 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840a9cc5-75e9-4b92-a12b-6fa2fbffb5e8/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-aloop.ko-entry_point.cil.out.i [2023-11-12 02:23:59,541 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840a9cc5-75e9-4b92-a12b-6fa2fbffb5e8/bin/uautomizer-verify-uTZkv6EMXl/data/211927f5d/1dc54ba2697e426ba58158112c327c65/FLAGc1f9fed1c [2023-11-12 02:23:59,561 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840a9cc5-75e9-4b92-a12b-6fa2fbffb5e8/bin/uautomizer-verify-uTZkv6EMXl/data/211927f5d/1dc54ba2697e426ba58158112c327c65 [2023-11-12 02:23:59,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:23:59,569 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:23:59,571 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:23:59,572 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:23:59,581 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:23:59,582 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:23:59" (1/1) ... [2023-11-12 02:23:59,583 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b0db96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:59, skipping insertion in model container [2023-11-12 02:23:59,583 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:23:59" (1/1) ... [2023-11-12 02:23:59,719 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:24:00,353 WARN L1270 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3724] [2023-11-12 02:24:00,397 WARN L1270 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3725-3726] [2023-11-12 02:24:00,653 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_840a9cc5-75e9-4b92-a12b-6fa2fbffb5e8/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-aloop.ko-entry_point.cil.out.i[111472,111485] [2023-11-12 02:24:01,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:01,743 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:24:01,932 WARN L1270 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3724] [2023-11-12 02:24:01,932 WARN L1270 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3725-3726] [2023-11-12 02:24:01,947 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_840a9cc5-75e9-4b92-a12b-6fa2fbffb5e8/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-aloop.ko-entry_point.cil.out.i[111472,111485] [2023-11-12 02:24:02,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:02,389 WARN L672 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:24:02,397 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:24:02,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:02 WrapperNode [2023-11-12 02:24:02,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:02,400 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:02,400 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:24:02,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:24:02,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:02" (1/1) ... [2023-11-12 02:24:02,524 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:02" (1/1) ... [2023-11-12 02:24:02,755 INFO L138 Inliner]: procedures = 205, calls = 1673, calls flagged for inlining = 87, calls inlined = 82, statements flattened = 3765 [2023-11-12 02:24:02,755 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:02,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:24:02,757 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:24:02,757 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:24:02,768 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:02" (1/1) ... [2023-11-12 02:24:02,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:02" (1/1) ... [2023-11-12 02:24:02,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:02" (1/1) ... [2023-11-12 02:24:02,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:02" (1/1) ... [2023-11-12 02:24:03,000 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:02" (1/1) ... [2023-11-12 02:24:03,035 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:02" (1/1) ... [2023-11-12 02:24:03,063 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:02" (1/1) ... [2023-11-12 02:24:03,086 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:02" (1/1) ... [2023-11-12 02:24:03,121 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:24:03,122 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:24:03,123 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:24:03,123 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:24:03,124 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:02" (1/1) ... [2023-11-12 02:24:03,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:03,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840a9cc5-75e9-4b92-a12b-6fa2fbffb5e8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:03,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840a9cc5-75e9-4b92-a12b-6fa2fbffb5e8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:24:03,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840a9cc5-75e9-4b92-a12b-6fa2fbffb5e8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:24:03,216 INFO L130 BoogieDeclarations]: Found specification of procedure get_setup [2023-11-12 02:24:03,217 INFO L138 BoogieDeclarations]: Found implementation of procedure get_setup [2023-11-12 02:24:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-12 02:24:03,217 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-12 02:24:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 02:24:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 02:24:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-12 02:24:03,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-12 02:24:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_format_set_silence [2023-11-12 02:24:03,218 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_format_set_silence [2023-11-12 02:24:03,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-12 02:24:03,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-12 02:24:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure byte_pos [2023-11-12 02:24:03,221 INFO L138 BoogieDeclarations]: Found implementation of procedure byte_pos [2023-11-12 02:24:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 02:24:03,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 02:24:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_trigger [2023-11-12 02:24:03,222 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_trigger [2023-11-12 02:24:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_pcm_new [2023-11-12 02:24:03,222 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_pcm_new [2023-11-12 02:24:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-12 02:24:03,223 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-12 02:24:03,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 02:24:03,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 02:24:03,224 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_open [2023-11-12 02:24:03,224 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_open [2023-11-12 02:24:03,224 INFO L130 BoogieDeclarations]: Found specification of procedure params_change [2023-11-12 02:24:03,224 INFO L138 BoogieDeclarations]: Found implementation of procedure params_change [2023-11-12 02:24:03,225 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:24:03,226 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:24:03,226 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_set_ops [2023-11-12 02:24:03,226 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_set_ops [2023-11-12 02:24:03,227 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_hw_rule_add [2023-11-12 02:24:03,227 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_hw_rule_add [2023-11-12 02:24:03,227 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64 [2023-11-12 02:24:03,227 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64 [2023-11-12 02:24:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2023-11-12 02:24:03,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2023-11-12 02:24:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_timer_stop [2023-11-12 02:24:03,228 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_timer_stop [2023-11-12 02:24:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:24:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-12 02:24:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_hw_free [2023-11-12 02:24:03,229 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_hw_free [2023-11-12 02:24:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure get_cable_index [2023-11-12 02:24:03,229 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cable_index [2023-11-12 02:24:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_suspend_all [2023-11-12 02:24:03,230 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_suspend_all [2023-11-12 02:24:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:24:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-12 02:24:03,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-12 02:24:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2023-11-12 02:24:03,230 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2023-11-12 02:24:03,231 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-12 02:24:03,231 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-12 02:24:03,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:24:03,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 02:24:03,231 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_lib_get_vmalloc_page [2023-11-12 02:24:03,232 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_lib_get_vmalloc_page [2023-11-12 02:24:03,232 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-12 02:24:03,232 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-12 02:24:03,232 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_close [2023-11-12 02:24:03,232 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_close [2023-11-12 02:24:03,232 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-12 02:24:03,233 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-12 02:24:03,234 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-12 02:24:03,234 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-12 02:24:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_active_notify [2023-11-12 02:24:03,236 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_active_notify [2023-11-12 02:24:03,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 02:24:03,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-12 02:24:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-12 02:24:03,237 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-12 02:24:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-12 02:24:03,237 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_pointer [2023-11-12 02:24:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_pointer [2023-11-12 02:24:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 02:24:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_hw_params [2023-11-12 02:24:03,238 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_hw_params [2023-11-12 02:24:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:24:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure bytepos_finish [2023-11-12 02:24:03,239 INFO L138 BoogieDeclarations]: Found implementation of procedure bytepos_finish [2023-11-12 02:24:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_timer_start [2023-11-12 02:24:03,239 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_timer_start [2023-11-12 02:24:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_prepare [2023-11-12 02:24:03,239 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_prepare [2023-11-12 02:24:03,240 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2023-11-12 02:24:03,240 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2023-11-12 02:24:03,240 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_proc_new [2023-11-12 02:24:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_proc_new [2023-11-12 02:24:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 02:24:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 02:24:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:24:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:24:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:24:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure bytepos_delta [2023-11-12 02:24:03,242 INFO L138 BoogieDeclarations]: Found implementation of procedure bytepos_delta [2023-11-12 02:24:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_suspend [2023-11-12 02:24:03,243 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_suspend [2023-11-12 02:24:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure frames_to_bytes [2023-11-12 02:24:03,243 INFO L138 BoogieDeclarations]: Found implementation of procedure frames_to_bytes [2023-11-12 02:24:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:24:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure snd_ctl_notify [2023-11-12 02:24:03,243 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_ctl_notify [2023-11-12 02:24:03,244 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_resume [2023-11-12 02:24:03,244 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_resume [2023-11-12 02:24:03,244 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_pos_update [2023-11-12 02:24:03,244 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_pos_update [2023-11-12 02:24:03,244 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_lib_ioctl [2023-11-12 02:24:03,245 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_lib_ioctl [2023-11-12 02:24:03,245 INFO L130 BoogieDeclarations]: Found specification of procedure snd_power_change_state [2023-11-12 02:24:03,245 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_power_change_state [2023-11-12 02:24:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure snd_card_free [2023-11-12 02:24:03,246 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_card_free [2023-11-12 02:24:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2023-11-12 02:24:03,246 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2023-11-12 02:24:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure bytes_to_frames [2023-11-12 02:24:03,247 INFO L138 BoogieDeclarations]: Found implementation of procedure bytes_to_frames [2023-11-12 02:24:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_unregister_all [2023-11-12 02:24:03,247 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_unregister_all [2023-11-12 02:24:03,248 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-12 02:24:03,248 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-12 02:24:03,249 INFO L130 BoogieDeclarations]: Found specification of procedure clear_capture_buf [2023-11-12 02:24:03,249 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_capture_buf [2023-11-12 02:24:03,249 INFO L130 BoogieDeclarations]: Found specification of procedure params_change_substream [2023-11-12 02:24:03,249 INFO L138 BoogieDeclarations]: Found implementation of procedure params_change_substream [2023-11-12 02:24:03,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:24:03,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:24:03,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:24:03,250 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-12 02:24:03,250 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-12 02:24:03,882 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:24:03,892 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:24:04,351 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-12 02:24:30,847 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:24:30,866 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:24:30,867 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:24:30,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:30 BoogieIcfgContainer [2023-11-12 02:24:30,872 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:24:30,875 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:24:30,876 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:24:30,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:24:30,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:23:59" (1/3) ... [2023-11-12 02:24:30,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dfc9bcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:30, skipping insertion in model container [2023-11-12 02:24:30,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:02" (2/3) ... [2023-11-12 02:24:30,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dfc9bcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:30, skipping insertion in model container [2023-11-12 02:24:30,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:30" (3/3) ... [2023-11-12 02:24:30,885 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-aloop.ko-entry_point.cil.out.i [2023-11-12 02:24:30,911 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:24:30,912 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:24:31,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:24:31,019 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;@35a73c6d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:24:31,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:24:31,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 917 states, 689 states have (on average 1.4310595065312046) internal successors, (986), 712 states have internal predecessors, (986), 170 states have call successors, (170), 57 states have call predecessors, (170), 56 states have return successors, (163), 156 states have call predecessors, (163), 163 states have call successors, (163) [2023-11-12 02:24:31,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-12 02:24:31,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:24:31,067 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:31,068 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:24:31,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:31,074 INFO L85 PathProgramCache]: Analyzing trace with hash 64906222, now seen corresponding path program 1 times [2023-11-12 02:24:31,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:31,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611170801] [2023-11-12 02:24:31,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:31,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:32,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:24:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:32,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:24:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:32,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:24:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:32,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-12 02:24:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:32,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-12 02:24:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:32,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-12 02:24:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:32,110 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-12 02:24:32,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:32,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611170801] [2023-11-12 02:24:32,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611170801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:32,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:32,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:24:32,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513627895] [2023-11-12 02:24:32,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:32,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:24:32,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:32,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:24:32,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:24:32,180 INFO L87 Difference]: Start difference. First operand has 917 states, 689 states have (on average 1.4310595065312046) internal successors, (986), 712 states have internal predecessors, (986), 170 states have call successors, (170), 57 states have call predecessors, (170), 56 states have return successors, (163), 156 states have call predecessors, (163), 163 states have call successors, (163) Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-12 02:24:37,413 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 [] [2023-11-12 02:24:40,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:24:42,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:24:44,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:24:46,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:24:48,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:24:54,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:24:56,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []