./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b86a0b87-2148-4395-a652-28327cc64790/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b86a0b87-2148-4395-a652-28327cc64790/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b86a0b87-2148-4395-a652-28327cc64790/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b86a0b87-2148-4395-a652-28327cc64790/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b86a0b87-2148-4395-a652-28327cc64790/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b86a0b87-2148-4395-a652-28327cc64790/bin/utaipan-verify-NcY6lQBIFX --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 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:45:36,825 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:45:36,917 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b86a0b87-2148-4395-a652-28327cc64790/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:45:36,922 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:45:36,923 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:45:36,952 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:45:36,953 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:45:36,953 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:45:36,954 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:45:36,955 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:45:36,955 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:45:36,956 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:45:36,957 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:45:36,958 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:45:36,958 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:45:36,959 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:45:36,959 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:45:36,960 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:45:36,961 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:45:36,961 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:45:36,962 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:45:36,963 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:45:36,964 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:45:36,965 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:45:36,965 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:45:36,966 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:45:36,966 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:45:36,967 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:45:36,967 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:45:36,968 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:45:36,969 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:45:36,969 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:45:36,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:45:36,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:45:36,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:45:36,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:45:36,972 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:45:36,972 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:45:36,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:45:36,972 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:45:36,973 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:45:36,976 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:45:36,976 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_b86a0b87-2148-4395-a652-28327cc64790/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b86a0b87-2148-4395-a652-28327cc64790/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 [2023-11-12 00:45:37,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:45:37,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:45:37,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:45:37,354 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:45:37,354 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:45:37,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b86a0b87-2148-4395-a652-28327cc64790/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2023-11-12 00:45:40,619 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:45:41,318 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:45:41,320 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b86a0b87-2148-4395-a652-28327cc64790/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2023-11-12 00:45:41,370 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b86a0b87-2148-4395-a652-28327cc64790/bin/utaipan-verify-NcY6lQBIFX/data/554984d96/9bb6b5f0c46e449ab305851f85c59217/FLAG114b7a434 [2023-11-12 00:45:41,383 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b86a0b87-2148-4395-a652-28327cc64790/bin/utaipan-verify-NcY6lQBIFX/data/554984d96/9bb6b5f0c46e449ab305851f85c59217 [2023-11-12 00:45:41,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:45:41,388 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:45:41,392 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:45:41,393 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:45:41,400 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:45:41,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:45:41" (1/1) ... [2023-11-12 00:45:41,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f0bd36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:41, skipping insertion in model container [2023-11-12 00:45:41,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:45:41" (1/1) ... [2023-11-12 00:45:41,594 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:45:43,983 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_b86a0b87-2148-4395-a652-28327cc64790/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2023-11-12 00:45:44,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:45:44,168 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:45:44,287 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 %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [2752] [2023-11-12 00:45:44,291 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%1,%0": "=q" (pfo_ret__): "m" (__preempt_count)); [2796] [2023-11-12 00:45:44,292 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [2799] [2023-11-12 00:45:44,292 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [2802] [2023-11-12 00:45:44,292 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [2805] [2023-11-12 00:45:44,757 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_b86a0b87-2148-4395-a652-28327cc64790/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2023-11-12 00:45:44,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:45:44,982 WARN L672 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:44,983 WARN L672 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:45:44,992 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:45:44,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:44 WrapperNode [2023-11-12 00:45:44,994 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:45:44,995 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:45:44,996 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:45:44,996 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:45:45,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:44" (1/1) ... [2023-11-12 00:45:45,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:44" (1/1) ... [2023-11-12 00:45:45,446 INFO L138 Inliner]: procedures = 303, calls = 4051, calls flagged for inlining = 143, calls inlined = 97, statements flattened = 5348 [2023-11-12 00:45:45,446 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:45:45,447 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:45:45,448 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:45:45,448 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:45:45,459 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:44" (1/1) ... [2023-11-12 00:45:45,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:44" (1/1) ... [2023-11-12 00:45:45,488 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:44" (1/1) ... [2023-11-12 00:45:45,488 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:44" (1/1) ... [2023-11-12 00:45:45,750 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:44" (1/1) ... [2023-11-12 00:45:45,790 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:44" (1/1) ... [2023-11-12 00:45:45,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:44" (1/1) ... [2023-11-12 00:45:45,919 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:44" (1/1) ... [2023-11-12 00:45:45,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:45:45,964 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:45:45,964 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:45:45,965 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:45:45,966 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:44" (1/1) ... [2023-11-12 00:45:45,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:45:45,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b86a0b87-2148-4395-a652-28327cc64790/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:45:46,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b86a0b87-2148-4395-a652-28327cc64790/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:45:46,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b86a0b87-2148-4395-a652-28327cc64790/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:45:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure rio_uevent [2023-11-12 00:45:46,063 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_uevent [2023-11-12 00:45:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2023-11-12 00:45:46,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2023-11-12 00:45:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-12 00:45:46,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-12 00:45:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-12 00:45:46,065 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-12 00:45:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 00:45:46,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 00:45:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2023-11-12 00:45:46,066 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2023-11-12 00:45:46,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2023-11-12 00:45:46,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2023-11-12 00:45:46,067 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2023-11-12 00:45:46,067 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2023-11-12 00:45:46,067 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-12 00:45:46,068 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-12 00:45:46,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 00:45:46,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 00:45:46,069 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_16 [2023-11-12 00:45:46,069 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_16 [2023-11-12 00:45:46,070 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2023-11-12 00:45:46,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2023-11-12 00:45:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:45:46,073 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:45:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure rio_device_remove [2023-11-12 00:45:46,073 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_device_remove [2023-11-12 00:45:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:45:46,074 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:45:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure bus_scan_store [2023-11-12 00:45:46,075 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_scan_store [2023-11-12 00:45:46,075 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-12 00:45:46,075 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-12 00:45:46,075 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-11-12 00:45:46,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-11-12 00:45:46,076 INFO L130 BoogieDeclarations]: Found specification of procedure disc_work_handler [2023-11-12 00:45:46,076 INFO L138 BoogieDeclarations]: Found implementation of procedure disc_work_handler [2023-11-12 00:45:46,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:45:46,076 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-12 00:45:46,076 INFO L130 BoogieDeclarations]: Found specification of procedure rio_dev_put [2023-11-12 00:45:46,077 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_dev_put [2023-11-12 00:45:46,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:45:46,077 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2023-11-12 00:45:46,077 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2023-11-12 00:45:46,077 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-12 00:45:46,077 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-12 00:45:46,078 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_16 [2023-11-12 00:45:46,078 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_16 [2023-11-12 00:45:46,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:45:46,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:45:46,078 INFO L130 BoogieDeclarations]: Found specification of procedure rio_mport_read_config_32 [2023-11-12 00:45:46,078 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_mport_read_config_32 [2023-11-12 00:45:46,079 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 00:45:46,079 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 00:45:46,079 INFO L130 BoogieDeclarations]: Found specification of procedure rio_mport_write_config_32 [2023-11-12 00:45:46,080 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_mport_write_config_32 [2023-11-12 00:45:46,081 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2023-11-12 00:45:46,082 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2023-11-12 00:45:46,082 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-12 00:45:46,083 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-12 00:45:46,083 INFO L130 BoogieDeclarations]: Found specification of procedure rio_name [2023-11-12 00:45:46,083 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_name [2023-11-12 00:45:46,083 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-12 00:45:46,083 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-12 00:45:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure rio_device_probe [2023-11-12 00:45:46,084 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_device_probe [2023-11-12 00:45:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-12 00:45:46,084 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-12 00:45:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_32 [2023-11-12 00:45:46,085 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_32 [2023-11-12 00:45:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2023-11-12 00:45:46,085 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2023-11-12 00:45:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:45:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~~u16~0~X~~u8~0~X~~u32~0~X~int~X~~u32~0~TO~int [2023-11-12 00:45:46,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~~u16~0~X~~u8~0~X~~u32~0~X~int~X~~u32~0~TO~int [2023-11-12 00:45:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure rio_dev_get [2023-11-12 00:45:46,086 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_dev_get [2023-11-12 00:45:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 00:45:46,086 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 00:45:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:45:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-12 00:45:46,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-12 00:45:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 00:45:46,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 00:45:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-12 00:45:46,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-12 00:45:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:45:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-12 00:45:46,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-12 00:45:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:45:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:45:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-12 00:45:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure release_resource [2023-11-12 00:45:46,090 INFO L138 BoogieDeclarations]: Found implementation of procedure release_resource [2023-11-12 00:45:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_8 [2023-11-12 00:45:46,090 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_8 [2023-11-12 00:45:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure rio_match_bus [2023-11-12 00:45:46,090 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_match_bus [2023-11-12 00:45:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_32 [2023-11-12 00:45:46,091 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_32 [2023-11-12 00:45:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2023-11-12 00:45:46,092 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2023-11-12 00:45:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure rio_match_device [2023-11-12 00:45:46,092 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_match_device [2023-11-12 00:45:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-12 00:45:46,092 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-12 00:45:46,093 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_8 [2023-11-12 00:45:46,093 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_8 [2023-11-12 00:45:46,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:45:46,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:45:46,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:45:46,094 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~~u16~0~X~~u8~0~X~~u32~0~X~int~X~$Pointer$~TO~int [2023-11-12 00:45:46,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~~u16~0~X~~u8~0~X~~u32~0~X~int~X~$Pointer$~TO~int [2023-11-12 00:45:46,882 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:45:46,885 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:45:47,178 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-12 00:45:53,758 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:45:54,913 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:45:54,913 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:45:54,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:45:54 BoogieIcfgContainer [2023-11-12 00:45:54,921 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:45:54,925 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:45:54,925 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:45:54,928 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:45:54,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:45:41" (1/3) ... [2023-11-12 00:45:54,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79712199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:45:54, skipping insertion in model container [2023-11-12 00:45:54,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:44" (2/3) ... [2023-11-12 00:45:54,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79712199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:45:54, skipping insertion in model container [2023-11-12 00:45:54,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:45:54" (3/3) ... [2023-11-12 00:45:54,933 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2023-11-12 00:45:54,958 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:45:54,959 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:45:55,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:45:55,035 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;@2c4f928e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:45:55,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:45:55,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 737 states, 484 states have (on average 1.3884297520661157) internal successors, (672), 516 states have internal predecessors, (672), 202 states have call successors, (202), 50 states have call predecessors, (202), 49 states have return successors, (182), 181 states have call predecessors, (182), 182 states have call successors, (182) [2023-11-12 00:45:55,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-12 00:45:55,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:45:55,058 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2023-11-12 00:45:55,059 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:45:55,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:45:55,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1821218289, now seen corresponding path program 1 times [2023-11-12 00:45:55,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:45:55,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211205681] [2023-11-12 00:45:55,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:45:55,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:45:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:45:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-12 00:45:56,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:45:56,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211205681] [2023-11-12 00:45:56,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211205681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:45:56,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:45:56,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:45:56,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191583907] [2023-11-12 00:45:56,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:45:56,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:45:56,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:45:56,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:45:56,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:45:56,822 INFO L87 Difference]: Start difference. First operand has 737 states, 484 states have (on average 1.3884297520661157) internal successors, (672), 516 states have internal predecessors, (672), 202 states have call successors, (202), 50 states have call predecessors, (202), 49 states have return successors, (182), 181 states have call predecessors, (182), 182 states have call successors, (182) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-12 00:45:57,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:45:57,739 INFO L93 Difference]: Finished difference Result 2175 states and 3155 transitions. [2023-11-12 00:45:57,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:45:57,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 64 [2023-11-12 00:45:57,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:45:57,767 INFO L225 Difference]: With dead ends: 2175 [2023-11-12 00:45:57,768 INFO L226 Difference]: Without dead ends: 1403 [2023-11-12 00:45:57,777 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 [2023-11-12 00:45:57,780 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 1005 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:45:57,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 1886 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 00:45:57,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2023-11-12 00:45:57,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1400. [2023-11-12 00:45:57,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 950 states have (on average 1.345263157894737) internal successors, (1278), 969 states have internal predecessors, (1278), 353 states have call successors, (353), 97 states have call predecessors, (353), 96 states have return successors, (351), 349 states have call predecessors, (351), 351 states have call successors, (351) [2023-11-12 00:45:57,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1982 transitions. [2023-11-12 00:45:57,945 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1982 transitions. Word has length 64 [2023-11-12 00:45:57,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:45:57,946 INFO L495 AbstractCegarLoop]: Abstraction has 1400 states and 1982 transitions. [2023-11-12 00:45:57,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-12 00:45:57,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1982 transitions. [2023-11-12 00:45:57,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-12 00:45:57,951 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:45:57,951 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2023-11-12 00:45:57,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:45:57,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:45:57,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:45:57,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1154448447, now seen corresponding path program 1 times [2023-11-12 00:45:57,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:45:57,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950934650] [2023-11-12 00:45:57,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:45:57,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:45:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:45:58,677 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-12 00:45:58,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:45:58,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950934650] [2023-11-12 00:45:58,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950934650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:45:58,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:45:58,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:45:58,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699602029] [2023-11-12 00:45:58,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:45:58,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:45:58,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:45:58,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:45:58,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:45:58,681 INFO L87 Difference]: Start difference. First operand 1400 states and 1982 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-12 00:45:59,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:45:59,642 INFO L93 Difference]: Finished difference Result 2708 states and 3866 transitions. [2023-11-12 00:45:59,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:45:59,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 67 [2023-11-12 00:45:59,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:45:59,666 INFO L225 Difference]: With dead ends: 2708 [2023-11-12 00:45:59,667 INFO L226 Difference]: Without dead ends: 2703 [2023-11-12 00:45:59,669 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 [2023-11-12 00:45:59,670 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 921 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:45:59,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 1821 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 00:45:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2703 states. [2023-11-12 00:45:59,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2703 to 2691. [2023-11-12 00:45:59,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2691 states, 1830 states have (on average 1.3502732240437159) internal successors, (2471), 1875 states have internal predecessors, (2471), 676 states have call successors, (676), 187 states have call predecessors, (676), 184 states have return successors, (694), 660 states have call predecessors, (694), 674 states have call successors, (694) [2023-11-12 00:45:59,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2691 states to 2691 states and 3841 transitions. [2023-11-12 00:45:59,855 INFO L78 Accepts]: Start accepts. Automaton has 2691 states and 3841 transitions. Word has length 67 [2023-11-12 00:45:59,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:45:59,856 INFO L495 AbstractCegarLoop]: Abstraction has 2691 states and 3841 transitions. [2023-11-12 00:45:59,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-12 00:45:59,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2691 states and 3841 transitions. [2023-11-12 00:45:59,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-12 00:45:59,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:45:59,863 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:45:59,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:45:59,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:45:59,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:45:59,864 INFO L85 PathProgramCache]: Analyzing trace with hash -97448130, now seen corresponding path program 1 times [2023-11-12 00:45:59,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:45:59,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030933894] [2023-11-12 00:45:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:45:59,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:46:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:46:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-12 00:46:00,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:46:00,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030933894] [2023-11-12 00:46:00,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030933894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:46:00,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:46:00,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:46:00,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470862406] [2023-11-12 00:46:00,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:46:00,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:46:00,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:46:00,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:46:00,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:46:00,705 INFO L87 Difference]: Start difference. First operand 2691 states and 3841 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-12 00:46:01,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:46:01,784 INFO L93 Difference]: Finished difference Result 7953 states and 11326 transitions. [2023-11-12 00:46:01,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:46:01,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 93 [2023-11-12 00:46:01,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:46:01,825 INFO L225 Difference]: With dead ends: 7953 [2023-11-12 00:46:01,825 INFO L226 Difference]: Without dead ends: 5271 [2023-11-12 00:46:01,840 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 [2023-11-12 00:46:01,848 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 956 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:46:01,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 1775 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 00:46:01,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5271 states. [2023-11-12 00:46:02,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5271 to 5263. [2023-11-12 00:46:02,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 3574 states have (on average 1.3461108002238389) internal successors, (4811), 3665 states have internal predecessors, (4811), 1320 states have call successors, (1320), 373 states have call predecessors, (1320), 368 states have return successors, (1356), 1288 states have call predecessors, (1356), 1318 states have call successors, (1356) [2023-11-12 00:46:02,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 7487 transitions. [2023-11-12 00:46:02,244 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 7487 transitions. Word has length 93 [2023-11-12 00:46:02,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:46:02,245 INFO L495 AbstractCegarLoop]: Abstraction has 5263 states and 7487 transitions. [2023-11-12 00:46:02,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-12 00:46:02,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 7487 transitions. [2023-11-12 00:46:02,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-12 00:46:02,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:46:02,249 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:46:02,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:46:02,250 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:46:02,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:46:02,250 INFO L85 PathProgramCache]: Analyzing trace with hash 103498984, now seen corresponding path program 1 times [2023-11-12 00:46:02,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:46:02,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589432082] [2023-11-12 00:46:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:46:02,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:46:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:46:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-12 00:46:02,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:46:02,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589432082] [2023-11-12 00:46:02,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589432082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:46:02,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:46:02,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:46:02,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435001798] [2023-11-12 00:46:02,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:46:02,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:46:02,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:46:02,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:46:02,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:46:02,967 INFO L87 Difference]: Start difference. First operand 5263 states and 7487 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-12 00:46:04,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:46:04,219 INFO L93 Difference]: Finished difference Result 15323 states and 21752 transitions. [2023-11-12 00:46:04,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:46:04,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 105 [2023-11-12 00:46:04,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:46:04,297 INFO L225 Difference]: With dead ends: 15323 [2023-11-12 00:46:04,297 INFO L226 Difference]: Without dead ends: 10069 [2023-11-12 00:46:04,323 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 [2023-11-12 00:46:04,327 INFO L413 NwaCegarLoop]: 1040 mSDtfsCounter, 941 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:46:04,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1912 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 00:46:04,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10069 states. [2023-11-12 00:46:05,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10069 to 10059. [2023-11-12 00:46:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10059 states, 6818 states have (on average 1.339835728952772) internal successors, (9135), 6989 states have internal predecessors, (9135), 2528 states have call successors, (2528), 721 states have call predecessors, (2528), 712 states have return successors, (2598), 2468 states have call predecessors, (2598), 2526 states have call successors, (2598) [2023-11-12 00:46:05,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10059 states to 10059 states and 14261 transitions. [2023-11-12 00:46:05,103 INFO L78 Accepts]: Start accepts. Automaton has 10059 states and 14261 transitions. Word has length 105 [2023-11-12 00:46:05,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:46:05,104 INFO L495 AbstractCegarLoop]: Abstraction has 10059 states and 14261 transitions. [2023-11-12 00:46:05,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-12 00:46:05,105 INFO L276 IsEmpty]: Start isEmpty. Operand 10059 states and 14261 transitions. [2023-11-12 00:46:05,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-12 00:46:05,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:46:05,109 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:46:05,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:46:05,109 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:46:05,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:46:05,110 INFO L85 PathProgramCache]: Analyzing trace with hash -97771825, now seen corresponding path program 1 times [2023-11-12 00:46:05,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:46:05,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10718798] [2023-11-12 00:46:05,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:46:05,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:46:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:46:05,699 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-12 00:46:05,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:46:05,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10718798] [2023-11-12 00:46:05,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10718798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:46:05,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:46:05,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:46:05,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459147289] [2023-11-12 00:46:05,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:46:05,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:46:05,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:46:05,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:46:05,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:46:05,702 INFO L87 Difference]: Start difference. First operand 10059 states and 14261 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-12 00:46:07,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:46:07,392 INFO L93 Difference]: Finished difference Result 27655 states and 39132 transitions. [2023-11-12 00:46:07,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:46:07,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2023-11-12 00:46:07,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:46:07,510 INFO L225 Difference]: With dead ends: 27655 [2023-11-12 00:46:07,510 INFO L226 Difference]: Without dead ends: 17605 [2023-11-12 00:46:07,559 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 [2023-11-12 00:46:07,560 INFO L413 NwaCegarLoop]: 1093 mSDtfsCounter, 753 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:46:07,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1979 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 00:46:07,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17605 states. [2023-11-12 00:46:08,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17605 to 17537. [2023-11-12 00:46:08,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17537 states, 12056 states have (on average 1.3393331121433312) internal successors, (16147), 12265 states have internal predecessors, (16147), 4282 states have call successors, (4282), 1207 states have call predecessors, (4282), 1198 states have return successors, (4360), 4208 states have call predecessors, (4360), 4280 states have call successors, (4360) [2023-11-12 00:46:08,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17537 states to 17537 states and 24789 transitions. [2023-11-12 00:46:08,985 INFO L78 Accepts]: Start accepts. Automaton has 17537 states and 24789 transitions. Word has length 130 [2023-11-12 00:46:08,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:46:08,986 INFO L495 AbstractCegarLoop]: Abstraction has 17537 states and 24789 transitions. [2023-11-12 00:46:08,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-12 00:46:08,987 INFO L276 IsEmpty]: Start isEmpty. Operand 17537 states and 24789 transitions. [2023-11-12 00:46:09,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-12 00:46:09,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:46:09,002 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:46:09,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:46:09,002 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:46:09,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:46:09,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1216990293, now seen corresponding path program 1 times [2023-11-12 00:46:09,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:46:09,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128432683] [2023-11-12 00:46:09,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:46:09,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:46:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:46:10,030 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-12 00:46:10,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:46:10,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128432683] [2023-11-12 00:46:10,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128432683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:46:10,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:46:10,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:46:10,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630742054] [2023-11-12 00:46:10,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:46:10,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:46:10,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:46:10,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:46:10,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:46:10,034 INFO L87 Difference]: Start difference. First operand 17537 states and 24789 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-12 00:46:12,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:46:12,263 INFO L93 Difference]: Finished difference Result 43659 states and 61736 transitions. [2023-11-12 00:46:12,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:46:12,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 161 [2023-11-12 00:46:12,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:46:12,399 INFO L225 Difference]: With dead ends: 43659 [2023-11-12 00:46:12,399 INFO L226 Difference]: Without dead ends: 26131 [2023-11-12 00:46:12,472 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 [2023-11-12 00:46:12,473 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 962 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:46:12,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 2380 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 00:46:12,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26131 states. [2023-11-12 00:46:14,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26131 to 26123. [2023-11-12 00:46:14,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26123 states, 18018 states have (on average 1.3368298368298368) internal successors, (24087), 18321 states have internal predecessors, (24087), 6320 states have call successors, (6320), 1797 states have call predecessors, (6320), 1784 states have return successors, (6434), 6212 states have call predecessors, (6434), 6318 states have call successors, (6434) [2023-11-12 00:46:14,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26123 states to 26123 states and 36841 transitions. [2023-11-12 00:46:14,204 INFO L78 Accepts]: Start accepts. Automaton has 26123 states and 36841 transitions. Word has length 161 [2023-11-12 00:46:14,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:46:14,205 INFO L495 AbstractCegarLoop]: Abstraction has 26123 states and 36841 transitions. [2023-11-12 00:46:14,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-12 00:46:14,208 INFO L276 IsEmpty]: Start isEmpty. Operand 26123 states and 36841 transitions. [2023-11-12 00:46:14,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-12 00:46:14,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:46:14,225 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:46:14,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:46:14,226 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:46:14,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:46:14,227 INFO L85 PathProgramCache]: Analyzing trace with hash -22794795, now seen corresponding path program 1 times [2023-11-12 00:46:14,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:46:14,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893578720] [2023-11-12 00:46:14,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:46:14,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:46:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:46:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-12 00:46:15,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:46:15,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893578720] [2023-11-12 00:46:15,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893578720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:46:15,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:46:15,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:46:15,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303383400] [2023-11-12 00:46:15,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:46:15,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:46:15,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:46:15,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:46:15,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:46:15,360 INFO L87 Difference]: Start difference. First operand 26123 states and 36841 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-12 00:46:17,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:46:17,798 INFO L93 Difference]: Finished difference Result 64883 states and 91550 transitions. [2023-11-12 00:46:17,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:46:17,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 173 [2023-11-12 00:46:17,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:46:17,966 INFO L225 Difference]: With dead ends: 64883 [2023-11-12 00:46:17,966 INFO L226 Difference]: Without dead ends: 38769 [2023-11-12 00:46:18,037 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 [2023-11-12 00:46:18,038 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 948 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2367 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:46:18,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 2367 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 00:46:18,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38769 states.