./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 30e01a73 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_92b948f9-5f1b-4403-b20f-922dded8224d/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b948f9-5f1b-4403-b20f-922dded8224d/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b948f9-5f1b-4403-b20f-922dded8224d/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b948f9-5f1b-4403-b20f-922dded8224d/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.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_92b948f9-5f1b-4403-b20f-922dded8224d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b948f9-5f1b-4403-b20f-922dded8224d/bin/utaipan-verify-mE87zJ7Ire --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0b0b41862c2f2ed85815e97691c99c06d3eb1c9f09c717c7d2a79de23098870a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:34:33,538 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:34:33,668 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b948f9-5f1b-4403-b20f-922dded8224d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:34:33,675 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:34:33,676 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:34:33,732 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:34:33,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:34:33,734 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:34:33,735 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:34:33,741 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:34:33,742 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:34:33,743 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:34:33,744 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:34:33,745 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:34:33,746 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:34:33,747 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:34:33,747 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:34:33,748 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:34:33,748 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:34:33,749 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:34:33,749 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:34:33,750 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:34:33,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:34:33,752 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:34:33,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:34:33,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:34:33,754 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:34:33,754 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:34:33,755 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:34:33,755 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:34:33,757 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:34:33,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:34:33,758 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:34:33,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:34:33,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:34:33,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:34:33,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:34:33,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:34:33,760 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:34:33,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:34:33,760 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:34:33,761 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:34:33,761 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:34:33,762 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:34:33,762 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_92b948f9-5f1b-4403-b20f-922dded8224d/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b948f9-5f1b-4403-b20f-922dded8224d/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b0b41862c2f2ed85815e97691c99c06d3eb1c9f09c717c7d2a79de23098870a [2023-11-23 20:34:34,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:34:34,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:34:34,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:34:34,165 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:34:34,166 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:34:34,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b948f9-5f1b-4403-b20f-922dded8224d/bin/utaipan-verify-mE87zJ7Ire/../../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 [2023-11-23 20:34:37,382 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:34:37,991 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:34:37,992 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b948f9-5f1b-4403-b20f-922dded8224d/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 [2023-11-23 20:34:38,037 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b948f9-5f1b-4403-b20f-922dded8224d/bin/utaipan-verify-mE87zJ7Ire/data/4311d6b34/b3adb993e882419db851503d44af29dc/FLAG35d84592c [2023-11-23 20:34:38,058 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b948f9-5f1b-4403-b20f-922dded8224d/bin/utaipan-verify-mE87zJ7Ire/data/4311d6b34/b3adb993e882419db851503d44af29dc [2023-11-23 20:34:38,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:34:38,066 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:34:38,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:34:38,071 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:34:38,076 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:34:38,077 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:38" (1/1) ... [2023-11-23 20:34:38,079 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2294d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:38, skipping insertion in model container [2023-11-23 20:34:38,079 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:38" (1/1) ... [2023-11-23 20:34:38,263 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:34:38,745 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3724] [2023-11-23 20:34:38,745 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3725-3726] [2023-11-23 20:34:39,000 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_92b948f9-5f1b-4403-b20f-922dded8224d/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] [2023-11-23 20:34:39,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:34:39,806 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:34:39,918 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3724] [2023-11-23 20:34:39,918 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3725-3726] [2023-11-23 20:34:39,930 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_92b948f9-5f1b-4403-b20f-922dded8224d/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] [2023-11-23 20:34:40,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:34:40,344 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:40,353 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:34:40,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:40 WrapperNode [2023-11-23 20:34:40,354 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:34:40,355 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:34:40,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:34:40,356 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:34:40,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:40" (1/1) ... [2023-11-23 20:34:40,459 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:40" (1/1) ... [2023-11-23 20:34:40,672 INFO L138 Inliner]: procedures = 205, calls = 1673, calls flagged for inlining = 87, calls inlined = 82, statements flattened = 3765 [2023-11-23 20:34:40,673 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:34:40,673 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:34:40,674 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:34:40,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:34:40,684 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:40" (1/1) ... [2023-11-23 20:34:40,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:40" (1/1) ... [2023-11-23 20:34:40,718 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:40" (1/1) ... [2023-11-23 20:34:40,719 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:40" (1/1) ... [2023-11-23 20:34:40,860 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:40" (1/1) ... [2023-11-23 20:34:40,897 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:40" (1/1) ... [2023-11-23 20:34:40,924 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:40" (1/1) ... [2023-11-23 20:34:40,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:40" (1/1) ... [2023-11-23 20:34:40,975 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:34:40,977 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:34:40,978 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:34:40,978 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:34:40,979 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:40" (1/1) ... [2023-11-23 20:34:40,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:34:40,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b948f9-5f1b-4403-b20f-922dded8224d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:34:41,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b948f9-5f1b-4403-b20f-922dded8224d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:34:41,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b948f9-5f1b-4403-b20f-922dded8224d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:34:41,055 INFO L130 BoogieDeclarations]: Found specification of procedure get_setup [2023-11-23 20:34:41,055 INFO L138 BoogieDeclarations]: Found implementation of procedure get_setup [2023-11-23 20:34:41,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 20:34:41,056 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 20:34:41,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 20:34:41,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 20:34:41,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 20:34:41,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 20:34:41,057 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_format_set_silence [2023-11-23 20:34:41,057 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_format_set_silence [2023-11-23 20:34:41,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-23 20:34:41,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-23 20:34:41,058 INFO L130 BoogieDeclarations]: Found specification of procedure byte_pos [2023-11-23 20:34:41,058 INFO L138 BoogieDeclarations]: Found implementation of procedure byte_pos [2023-11-23 20:34:41,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 20:34:41,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 20:34:41,058 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_trigger [2023-11-23 20:34:41,059 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_trigger [2023-11-23 20:34:41,059 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_pcm_new [2023-11-23 20:34:41,059 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_pcm_new [2023-11-23 20:34:41,059 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 20:34:41,059 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 20:34:41,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 20:34:41,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 20:34:41,060 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_open [2023-11-23 20:34:41,060 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_open [2023-11-23 20:34:41,060 INFO L130 BoogieDeclarations]: Found specification of procedure params_change [2023-11-23 20:34:41,061 INFO L138 BoogieDeclarations]: Found implementation of procedure params_change [2023-11-23 20:34:41,061 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:34:41,061 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:34:41,061 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_set_ops [2023-11-23 20:34:41,061 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_set_ops [2023-11-23 20:34:41,062 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_hw_rule_add [2023-11-23 20:34:41,062 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_hw_rule_add [2023-11-23 20:34:41,062 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64 [2023-11-23 20:34:41,062 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64 [2023-11-23 20:34:41,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2023-11-23 20:34:41,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2023-11-23 20:34:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_timer_stop [2023-11-23 20:34:41,063 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_timer_stop [2023-11-23 20:34:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:34:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 20:34:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_hw_free [2023-11-23 20:34:41,064 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_hw_free [2023-11-23 20:34:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure get_cable_index [2023-11-23 20:34:41,064 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cable_index [2023-11-23 20:34:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_suspend_all [2023-11-23 20:34:41,064 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_suspend_all [2023-11-23 20:34:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:34:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-23 20:34:41,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-23 20:34:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2023-11-23 20:34:41,065 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2023-11-23 20:34:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 20:34:41,066 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 20:34:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:34:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:34:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_lib_get_vmalloc_page [2023-11-23 20:34:41,066 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_lib_get_vmalloc_page [2023-11-23 20:34:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 20:34:41,067 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 20:34:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_close [2023-11-23 20:34:41,067 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_close [2023-11-23 20:34:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-23 20:34:41,068 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-23 20:34:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 20:34:41,068 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 20:34:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_active_notify [2023-11-23 20:34:41,068 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_active_notify [2023-11-23 20:34:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 20:34:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-23 20:34:41,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-23 20:34:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-23 20:34:41,069 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-23 20:34:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_pointer [2023-11-23 20:34:41,070 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_pointer [2023-11-23 20:34:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:34:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_hw_params [2023-11-23 20:34:41,070 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_hw_params [2023-11-23 20:34:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:34:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure bytepos_finish [2023-11-23 20:34:41,071 INFO L138 BoogieDeclarations]: Found implementation of procedure bytepos_finish [2023-11-23 20:34:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_timer_start [2023-11-23 20:34:41,071 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_timer_start [2023-11-23 20:34:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_prepare [2023-11-23 20:34:41,072 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_prepare [2023-11-23 20:34:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2023-11-23 20:34:41,072 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2023-11-23 20:34:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_proc_new [2023-11-23 20:34:41,072 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_proc_new [2023-11-23 20:34:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 20:34:41,073 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 20:34:41,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:34:41,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:34:41,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:34:41,073 INFO L130 BoogieDeclarations]: Found specification of procedure bytepos_delta [2023-11-23 20:34:41,074 INFO L138 BoogieDeclarations]: Found implementation of procedure bytepos_delta [2023-11-23 20:34:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_suspend [2023-11-23 20:34:41,074 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_suspend [2023-11-23 20:34:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure frames_to_bytes [2023-11-23 20:34:41,074 INFO L138 BoogieDeclarations]: Found implementation of procedure frames_to_bytes [2023-11-23 20:34:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:34:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure snd_ctl_notify [2023-11-23 20:34:41,075 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_ctl_notify [2023-11-23 20:34:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_resume [2023-11-23 20:34:41,075 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_resume [2023-11-23 20:34:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_pos_update [2023-11-23 20:34:41,076 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_pos_update [2023-11-23 20:34:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_lib_ioctl [2023-11-23 20:34:41,076 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_lib_ioctl [2023-11-23 20:34:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure snd_power_change_state [2023-11-23 20:34:41,076 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_power_change_state [2023-11-23 20:34:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure snd_card_free [2023-11-23 20:34:41,077 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_card_free [2023-11-23 20:34:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2023-11-23 20:34:41,077 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2023-11-23 20:34:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure bytes_to_frames [2023-11-23 20:34:41,077 INFO L138 BoogieDeclarations]: Found implementation of procedure bytes_to_frames [2023-11-23 20:34:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_unregister_all [2023-11-23 20:34:41,078 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_unregister_all [2023-11-23 20:34:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 20:34:41,078 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 20:34:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure clear_capture_buf [2023-11-23 20:34:41,078 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_capture_buf [2023-11-23 20:34:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure params_change_substream [2023-11-23 20:34:41,079 INFO L138 BoogieDeclarations]: Found implementation of procedure params_change_substream [2023-11-23 20:34:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:34:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:34:41,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:34:41,080 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-23 20:34:41,080 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-23 20:34:41,644 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:34:41,649 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:34:42,082 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 20:34:57,138 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:34:59,111 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:34:59,112 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 20:34:59,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:59 BoogieIcfgContainer [2023-11-23 20:34:59,114 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:34:59,117 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:34:59,117 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:34:59,122 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:34:59,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:34:38" (1/3) ... [2023-11-23 20:34:59,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509e5714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:59, skipping insertion in model container [2023-11-23 20:34:59,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:40" (2/3) ... [2023-11-23 20:34:59,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509e5714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:59, skipping insertion in model container [2023-11-23 20:34:59,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:59" (3/3) ... [2023-11-23 20:34:59,133 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 [2023-11-23 20:34:59,158 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:34:59,160 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:34:59,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:34:59,284 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=FINITE_AUTOMATA, 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;@24e3e89f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:34:59,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:34:59,303 INFO L276 IsEmpty]: Start isEmpty. Operand has 643 states, 415 states have (on average 1.4337349397590362) internal successors, (595), 438 states have internal predecessors, (595), 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) [2023-11-23 20:34:59,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-23 20:34:59,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:59,353 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] [2023-11-23 20:34:59,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:34:59,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:59,363 INFO L85 PathProgramCache]: Analyzing trace with hash 631147078, now seen corresponding path program 1 times [2023-11-23 20:34:59,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:34:59,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049410454] [2023-11-23 20:34:59,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:59,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:34:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 20:35:00,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:00,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049410454] [2023-11-23 20:35:00,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049410454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:00,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:00,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:35:00,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635240516] [2023-11-23 20:35:00,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:00,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:35:00,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:00,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:35:00,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:35:00,178 INFO L87 Difference]: Start difference. First operand has 643 states, 415 states have (on average 1.4337349397590362) internal successors, (595), 438 states have internal predecessors, (595), 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 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 20:35:04,255 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 [] [2023-11-23 20:35:06,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:09,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:13,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:15,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:17,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:20,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:20,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:20,396 INFO L93 Difference]: Finished difference Result 1847 states and 2672 transitions. [2023-11-23 20:35:20,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:35:20,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 52 [2023-11-23 20:35:20,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:20,438 INFO L225 Difference]: With dead ends: 1847 [2023-11-23 20:35:20,439 INFO L226 Difference]: Without dead ends: 1190 [2023-11-23 20:35:20,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:35:20,463 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 814 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:20,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 1536 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 296 Invalid, 7 Unknown, 0 Unchecked, 20.0s Time] [2023-11-23 20:35:20,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2023-11-23 20:35:20,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1186. [2023-11-23 20:35:20,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 773 states have (on average 1.4036222509702458) internal successors, (1085), 802 states have internal predecessors, (1085), 302 states have call successors, (302), 111 states have call predecessors, (302), 110 states have return successors, (301), 286 states have call predecessors, (301), 301 states have call successors, (301) [2023-11-23 20:35:20,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1688 transitions. [2023-11-23 20:35:20,707 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1688 transitions. Word has length 52 [2023-11-23 20:35:20,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:20,708 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1688 transitions. [2023-11-23 20:35:20,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 20:35:20,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1688 transitions. [2023-11-23 20:35:20,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-23 20:35:20,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:20,719 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] [2023-11-23 20:35:20,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:35:20,719 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:20,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:20,720 INFO L85 PathProgramCache]: Analyzing trace with hash -753601608, now seen corresponding path program 1 times [2023-11-23 20:35:20,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:20,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959476548] [2023-11-23 20:35:20,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:20,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:21,046 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 20:35:21,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:21,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959476548] [2023-11-23 20:35:21,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959476548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:21,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:21,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:35:21,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758370501] [2023-11-23 20:35:21,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:21,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:35:21,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:21,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:35:21,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:35:21,049 INFO L87 Difference]: Start difference. First operand 1186 states and 1688 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 20:35:24,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:25,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:27,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:30,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:33,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:35,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:38,008 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 []