./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-dummy.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_5d1765cd-2b58-426b-8d03-962416806a7a/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1765cd-2b58-426b-8d03-962416806a7a/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_5d1765cd-2b58-426b-8d03-962416806a7a/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1765cd-2b58-426b-8d03-962416806a7a/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-dummy.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1765cd-2b58-426b-8d03-962416806a7a/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_5d1765cd-2b58-426b-8d03-962416806a7a/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 0d89b9bb6440b8a8be3e0bf87cd6d3f6e054e43e6429198b179543019b622d90 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:37:36,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:37:36,727 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1765cd-2b58-426b-8d03-962416806a7a/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:37:36,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:37:36,742 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:37:36,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:37:36,784 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:37:36,785 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:37:36,786 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:37:36,794 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:37:36,794 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:37:36,796 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:37:36,796 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:37:36,798 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:37:36,799 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:37:36,799 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:37:36,800 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:37:36,800 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:37:36,800 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:37:36,801 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:37:36,801 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:37:36,802 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:37:36,803 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:37:36,804 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:37:36,804 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:37:36,805 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:37:36,805 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:37:36,805 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:37:36,806 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:37:36,806 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:37:36,808 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:37:36,808 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:37:36,808 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:37:36,809 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:37:36,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:37:36,809 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:37:36,809 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:37:36,810 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:37:36,810 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:37:36,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:37:36,810 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:37:36,811 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:37:36,811 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:37:36,811 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:37:36,812 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_5d1765cd-2b58-426b-8d03-962416806a7a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1765cd-2b58-426b-8d03-962416806a7a/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d89b9bb6440b8a8be3e0bf87cd6d3f6e054e43e6429198b179543019b622d90 [2023-11-23 20:37:37,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:37:37,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:37:37,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:37:37,156 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:37:37,159 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:37:37,161 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1765cd-2b58-426b-8d03-962416806a7a/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-dummy.ko-entry_point.cil.out.i [2023-11-23 20:37:40,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:37:40,822 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:37:40,822 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1765cd-2b58-426b-8d03-962416806a7a/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-dummy.ko-entry_point.cil.out.i [2023-11-23 20:37:40,874 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1765cd-2b58-426b-8d03-962416806a7a/bin/utaipan-verify-mE87zJ7Ire/data/d689d9cbe/acab38acb6824878ad1d4783490405b7/FLAG43ea4d522 [2023-11-23 20:37:40,894 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1765cd-2b58-426b-8d03-962416806a7a/bin/utaipan-verify-mE87zJ7Ire/data/d689d9cbe/acab38acb6824878ad1d4783490405b7 [2023-11-23 20:37:40,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:37:40,899 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:37:40,900 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:40,901 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:37:40,909 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:37:40,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:40" (1/1) ... [2023-11-23 20:37:40,915 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@123c551f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:40, skipping insertion in model container [2023-11-23 20:37:40,915 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:40" (1/1) ... [2023-11-23 20:37:41,060 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:37:41,692 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3761] [2023-11-23 20:37:41,693 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3762-3763] [2023-11-23 20:37:41,998 WARN L635 FunctionHandler]: implicit declaration of function ldv_assume [2023-11-23 20:37:42,021 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_5d1765cd-2b58-426b-8d03-962416806a7a/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-dummy.ko-entry_point.cil.out.i[114791,114804] [2023-11-23 20:37:42,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:42,866 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:37:42,971 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3761] [2023-11-23 20:37:42,971 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3762-3763] [2023-11-23 20:37:42,974 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [3846-3847] [2023-11-23 20:37:42,988 WARN L635 FunctionHandler]: implicit declaration of function ldv_assume [2023-11-23 20:37:42,990 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_5d1765cd-2b58-426b-8d03-962416806a7a/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-dummy.ko-entry_point.cil.out.i[114791,114804] [2023-11-23 20:37:43,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:43,443 WARN L675 CHandler]: The function ldv_is_err is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:43,443 WARN L675 CHandler]: The function ldv_assume is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:43,444 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:43,452 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:37:43,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:43 WrapperNode [2023-11-23 20:37:43,453 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:43,454 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:37:43,454 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:37:43,454 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:37:43,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:43" (1/1) ... [2023-11-23 20:37:43,556 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:43" (1/1) ... [2023-11-23 20:37:43,708 INFO L138 Inliner]: procedures = 224, calls = 1669, calls flagged for inlining = 101, calls inlined = 89, statements flattened = 3289 [2023-11-23 20:37:43,709 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:37:43,710 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:37:43,710 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:37:43,711 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:37:43,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:43" (1/1) ... [2023-11-23 20:37:43,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:43" (1/1) ... [2023-11-23 20:37:43,758 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:43" (1/1) ... [2023-11-23 20:37:43,758 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:43" (1/1) ... [2023-11-23 20:37:43,903 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:43" (1/1) ... [2023-11-23 20:37:43,938 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:43" (1/1) ... [2023-11-23 20:37:43,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:43" (1/1) ... [2023-11-23 20:37:43,985 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:43" (1/1) ... [2023-11-23 20:37:44,013 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:37:44,014 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:37:44,014 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:37:44,015 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:37:44,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:43" (1/1) ... [2023-11-23 20:37:44,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:37:44,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1765cd-2b58-426b-8d03-962416806a7a/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:37:44,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1765cd-2b58-426b-8d03-962416806a7a/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:37:44,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1765cd-2b58-426b-8d03-962416806a7a/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:37:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure hw_param_interval_c [2023-11-23 20:37:44,110 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_param_interval_c [2023-11-23 20:37:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-11-23 20:37:44,111 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-11-23 20:37:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 20:37:44,111 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 20:37:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2023-11-23 20:37:44,111 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2023-11-23 20:37:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_systimer_prepare [2023-11-23 20:37:44,112 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_systimer_prepare [2023-11-23 20:37:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 20:37:44,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 20:37:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_period_elapsed [2023-11-23 20:37:44,113 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_period_elapsed [2023-11-23 20:37:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-23 20:37:44,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-23 20:37:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 20:37:44,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 20:37:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 20:37:44,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 20:37:44,117 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_systimer_start [2023-11-23 20:37:44,118 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_systimer_start [2023-11-23 20:37:44,118 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_systimer_free [2023-11-23 20:37:44,118 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_systimer_free [2023-11-23 20:37:44,118 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-11-23 20:37:44,118 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-11-23 20:37:44,118 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_prepare [2023-11-23 20:37:44,118 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_prepare [2023-11-23 20:37:44,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 20:37:44,118 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 20:37:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure snd_dummy_unregister_all [2023-11-23 20:37:44,119 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_dummy_unregister_all [2023-11-23 20:37:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:37:44,119 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:37:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_set_ops [2023-11-23 20:37:44,119 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_set_ops [2023-11-23 20:37:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_hrtimer_free [2023-11-23 20:37:44,119 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_hrtimer_free [2023-11-23 20:37:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 20:37:44,120 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 20:37:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_systimer_pointer [2023-11-23 20:37:44,120 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_systimer_pointer [2023-11-23 20:37:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64 [2023-11-23 20:37:44,120 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64 [2023-11-23 20:37:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:37:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_hrtimer_pointer [2023-11-23 20:37:44,120 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_hrtimer_pointer [2023-11-23 20:37:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 20:37:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure snd_dummy_remove [2023-11-23 20:37:44,121 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_dummy_remove [2023-11-23 20:37:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:37:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-23 20:37:44,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-23 20:37:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_hrtimer_start [2023-11-23 20:37:44,121 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_hrtimer_start [2023-11-23 20:37:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 20:37:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2023-11-23 20:37:44,121 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2023-11-23 20:37:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_hrtimer_create [2023-11-23 20:37:44,122 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_hrtimer_create [2023-11-23 20:37:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure snd_dummy_probe [2023-11-23 20:37:44,122 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_dummy_probe [2023-11-23 20:37:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure free_fake_buffer [2023-11-23 20:37:44,122 INFO L138 BoogieDeclarations]: Found implementation of procedure free_fake_buffer [2023-11-23 20:37:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_silence [2023-11-23 20:37:44,122 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_silence [2023-11-23 20:37:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:37:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:37:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_hw_free [2023-11-23 20:37:44,124 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_hw_free [2023-11-23 20:37:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 20:37:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 20:37:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 20:37:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 20:37:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_hrtimer_stop [2023-11-23 20:37:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_hrtimer_stop [2023-11-23 20:37:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_close [2023-11-23 20:37:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_close [2023-11-23 20:37:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 20:37:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 20:37:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_systimer_update [2023-11-23 20:37:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_systimer_update [2023-11-23 20:37:44,128 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_copy [2023-11-23 20:37:44,128 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_copy [2023-11-23 20:37:44,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-23 20:37:44,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-23 20:37:44,128 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_hrtimer_prepare [2023-11-23 20:37:44,128 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_hrtimer_prepare [2023-11-23 20:37:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-23 20:37:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-23 20:37:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-23 20:37:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-23 20:37:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:37:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-23 20:37:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_page [2023-11-23 20:37:44,130 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_page [2023-11-23 20:37:44,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:37:44,130 INFO L130 BoogieDeclarations]: Found specification of procedure snd_dummy_resume [2023-11-23 20:37:44,131 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_dummy_resume [2023-11-23 20:37:44,131 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 20:37:44,131 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 20:37:44,132 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_systimer_rearm [2023-11-23 20:37:44,132 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_systimer_rearm [2023-11-23 20:37:44,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:37:44,132 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~~ktime_t~0 [2023-11-23 20:37:44,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~~ktime_t~0 [2023-11-23 20:37:44,132 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_systimer_create [2023-11-23 20:37:44,133 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_systimer_create [2023-11-23 20:37:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64_rem [2023-11-23 20:37:44,134 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64_rem [2023-11-23 20:37:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 20:37:44,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 20:37:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:37:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:37:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~snd_pcm_uframes_t~0 [2023-11-23 20:37:44,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~snd_pcm_uframes_t~0 [2023-11-23 20:37:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure emu10k1_playback_constraints [2023-11-23 20:37:44,135 INFO L138 BoogieDeclarations]: Found implementation of procedure emu10k1_playback_constraints [2023-11-23 20:37:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_trigger [2023-11-23 20:37:44,136 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_trigger [2023-11-23 20:37:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:37:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2023-11-23 20:37:44,136 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2023-11-23 20:37:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 20:37:44,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 20:37:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_lib_ioctl [2023-11-23 20:37:44,137 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_lib_ioctl [2023-11-23 20:37:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-23 20:37:44,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-23 20:37:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_systimer_stop [2023-11-23 20:37:44,138 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_systimer_stop [2023-11-23 20:37:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_hrtimer_sync [2023-11-23 20:37:44,138 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_hrtimer_sync [2023-11-23 20:37:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure snd_power_change_state [2023-11-23 20:37:44,139 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_power_change_state [2023-11-23 20:37:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure hrtimer_cb_get_time [2023-11-23 20:37:44,140 INFO L138 BoogieDeclarations]: Found implementation of procedure hrtimer_cb_get_time [2023-11-23 20:37:44,140 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_pointer [2023-11-23 20:37:44,143 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_pointer [2023-11-23 20:37:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure snd_card_free [2023-11-23 20:37:44,144 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_card_free [2023-11-23 20:37:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2023-11-23 20:37:44,147 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2023-11-23 20:37:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure snd_dummy_suspend [2023-11-23 20:37:44,148 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_dummy_suspend [2023-11-23 20:37:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_open [2023-11-23 20:37:44,149 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_open [2023-11-23 20:37:44,154 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 20:37:44,154 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 20:37:44,154 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_hw_params [2023-11-23 20:37:44,155 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_hw_params [2023-11-23 20:37:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:37:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:37:44,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:37:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-23 20:37:44,156 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-23 20:37:44,915 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:37:44,921 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:37:45,384 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 20:37:48,977 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:37:50,078 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:37:50,078 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:37:50,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:50 BoogieIcfgContainer [2023-11-23 20:37:50,081 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:37:50,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:37:50,085 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:37:50,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:37:50,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:37:40" (1/3) ... [2023-11-23 20:37:50,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134e5aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:50, skipping insertion in model container [2023-11-23 20:37:50,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:43" (2/3) ... [2023-11-23 20:37:50,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134e5aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:50, skipping insertion in model container [2023-11-23 20:37:50,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:50" (3/3) ... [2023-11-23 20:37:50,093 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-dummy.ko-entry_point.cil.out.i [2023-11-23 20:37:50,119 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:37:50,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:37:50,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:37:50,218 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;@49eea5e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:37:50,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:37:50,227 INFO L276 IsEmpty]: Start isEmpty. Operand has 749 states, 488 states have (on average 1.430327868852459) internal successors, (698), 501 states have internal predecessors, (698), 190 states have call successors, (190), 70 states have call predecessors, (190), 69 states have return successors, (181), 180 states have call predecessors, (181), 181 states have call successors, (181) [2023-11-23 20:37:50,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-23 20:37:50,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:50,249 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-23 20:37:50,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:37:50,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:50,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1317260108, now seen corresponding path program 1 times [2023-11-23 20:37:50,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:37:50,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466951345] [2023-11-23 20:37:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:50,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:37:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-23 20:37:51,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:37:51,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466951345] [2023-11-23 20:37:51,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466951345] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:51,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:51,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:37:51,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703104086] [2023-11-23 20:37:51,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:51,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:37:51,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:37:51,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:37:51,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:51,299 INFO L87 Difference]: Start difference. First operand has 749 states, 488 states have (on average 1.430327868852459) internal successors, (698), 501 states have internal predecessors, (698), 190 states have call successors, (190), 70 states have call predecessors, (190), 69 states have return successors, (181), 180 states have call predecessors, (181), 181 states have call successors, (181) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 20:37:54,040 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 20:37:57,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:59,165 WARN L539 Checker$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 20:38:01,601 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 20:38:01,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:38:01,687 INFO L93 Difference]: Finished difference Result 2168 states and 3149 transitions. [2023-11-23 20:38:01,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:38:01,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 74 [2023-11-23 20:38:01,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:38:01,738 INFO L225 Difference]: With dead ends: 2168 [2023-11-23 20:38:01,738 INFO L226 Difference]: Without dead ends: 1416 [2023-11-23 20:38:01,752 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 20:38:01,757 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 1011 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:38:01,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 1826 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 3 Unknown, 0 Unchecked, 10.1s Time] [2023-11-23 20:38:01,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2023-11-23 20:38:01,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1412. [2023-11-23 20:38:01,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 934 states have (on average 1.4068522483940042) internal successors, (1314), 939 states have internal predecessors, (1314), 342 states have call successors, (342), 136 states have call predecessors, (342), 135 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2023-11-23 20:38:01,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1997 transitions. [2023-11-23 20:38:01,993 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1997 transitions. Word has length 74 [2023-11-23 20:38:01,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:38:01,994 INFO L495 AbstractCegarLoop]: Abstraction has 1412 states and 1997 transitions. [2023-11-23 20:38:01,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 20:38:01,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1997 transitions. [2023-11-23 20:38:02,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 20:38:02,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:38:02,010 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-23 20:38:02,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:38:02,011 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:38:02,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:38:02,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1053728419, now seen corresponding path program 1 times [2023-11-23 20:38:02,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:38:02,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972984198] [2023-11-23 20:38:02,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:38:02,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:38:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:38:02,547 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-23 20:38:02,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:38:02,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972984198] [2023-11-23 20:38:02,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972984198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:38:02,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:38:02,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:38:02,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914862845] [2023-11-23 20:38:02,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:38:02,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:38:02,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:38:02,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:38:02,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:38:02,553 INFO L87 Difference]: Start difference. First operand 1412 states and 1997 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 20:38:04,854 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 20:38:06,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:38:08,850 WARN L539 Checker$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 20:38:10,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:38:13,322 WARN L539 Checker$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 20:38:13,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:38:13,435 INFO L93 Difference]: Finished difference Result 4123 states and 5815 transitions. [2023-11-23 20:38:13,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:38:13,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 76 [2023-11-23 20:38:13,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:38:13,463 INFO L225 Difference]: With dead ends: 4123 [2023-11-23 20:38:13,464 INFO L226 Difference]: Without dead ends: 2735 [2023-11-23 20:38:13,471 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 20:38:13,474 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 977 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-11-23 20:38:13,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 1821 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 266 Invalid, 4 Unknown, 0 Unchecked, 10.7s Time] [2023-11-23 20:38:13,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2023-11-23 20:38:13,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 2730. [2023-11-23 20:38:13,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2730 states, 1806 states have (on average 1.4058693244739757) internal successors, (2539), 1817 states have internal predecessors, (2539), 654 states have call successors, (654), 270 states have call predecessors, (654), 269 states have return successors, (653), 646 states have call predecessors, (653), 653 states have call successors, (653) [2023-11-23 20:38:13,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 3846 transitions. [2023-11-23 20:38:13,655 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 3846 transitions. Word has length 76 [2023-11-23 20:38:13,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:38:13,658 INFO L495 AbstractCegarLoop]: Abstraction has 2730 states and 3846 transitions. [2023-11-23 20:38:13,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 20:38:13,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 3846 transitions. [2023-11-23 20:38:13,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-23 20:38:13,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:38:13,669 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:38:13,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:38:13,669 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:38:13,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:38:13,681 INFO L85 PathProgramCache]: Analyzing trace with hash -161222536, now seen corresponding path program 1 times [2023-11-23 20:38:13,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:38:13,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060126547] [2023-11-23 20:38:13,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:38:13,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:38:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:38:14,102 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-23 20:38:14,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:38:14,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060126547] [2023-11-23 20:38:14,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060126547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:38:14,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:38:14,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:38:14,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128884095] [2023-11-23 20:38:14,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:38:14,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:38:14,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:38:14,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:38:14,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:38:14,106 INFO L87 Difference]: Start difference. First operand 2730 states and 3846 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 20:38:16,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:38:20,051 WARN L539 Checker$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 20:38:22,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:38:23,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:38:24,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:38:24,095 INFO L93 Difference]: Finished difference Result 7821 states and 10954 transitions. [2023-11-23 20:38:24,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:38:24,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 91 [2023-11-23 20:38:24,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:38:24,141 INFO L225 Difference]: With dead ends: 7821 [2023-11-23 20:38:24,142 INFO L226 Difference]: Without dead ends: 5115 [2023-11-23 20:38:24,156 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 20:38:24,157 INFO L413 NwaCegarLoop]: 1004 mSDtfsCounter, 896 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-11-23 20:38:24,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 1828 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 307 Invalid, 3 Unknown, 0 Unchecked, 9.7s Time] [2023-11-23 20:38:24,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5115 states. [2023-11-23 20:38:24,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5115 to 5110. [2023-11-23 20:38:24,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5110 states, 3370 states have (on average 1.3967359050445103) internal successors, (4707), 3393 states have internal predecessors, (4707), 1214 states have call successors, (1214), 526 states have call predecessors, (1214), 525 states have return successors, (1213), 1198 states have call predecessors, (1213), 1213 states have call successors, (1213) [2023-11-23 20:38:24,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5110 states to 5110 states and 7134 transitions. [2023-11-23 20:38:24,467 INFO L78 Accepts]: Start accepts. Automaton has 5110 states and 7134 transitions. Word has length 91 [2023-11-23 20:38:24,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:38:24,467 INFO L495 AbstractCegarLoop]: Abstraction has 5110 states and 7134 transitions. [2023-11-23 20:38:24,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 20:38:24,468 INFO L276 IsEmpty]: Start isEmpty. Operand 5110 states and 7134 transitions. [2023-11-23 20:38:24,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 20:38:24,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:38:24,472 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:38:24,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:38:24,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:38:24,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:38:24,474 INFO L85 PathProgramCache]: Analyzing trace with hash 279127800, now seen corresponding path program 1 times [2023-11-23 20:38:24,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:38:24,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264395794] [2023-11-23 20:38:24,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:38:24,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:38:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:38:24,993 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-23 20:38:24,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:38:24,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264395794] [2023-11-23 20:38:24,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264395794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:38:24,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:38:24,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:38:24,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601428199] [2023-11-23 20:38:24,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:38:24,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:38:24,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:38:24,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:38:24,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:38:24,996 INFO L87 Difference]: Start difference. First operand 5110 states and 7134 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 20:38:27,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:38:29,939 WARN L539 Checker$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 20:38:31,949 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 []