./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-video-cx88-cx88-blackbird-ko--32_7a--d47b389.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed53e45-a6f1-42b4-adb6-1835118e8d91/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed53e45-a6f1-42b4-adb6-1835118e8d91/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed53e45-a6f1-42b4-adb6-1835118e8d91/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed53e45-a6f1-42b4-adb6-1835118e8d91/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-video-cx88-cx88-blackbird-ko--32_7a--d47b389.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed53e45-a6f1-42b4-adb6-1835118e8d91/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed53e45-a6f1-42b4-adb6-1835118e8d91/bin/utaipan-verify-t7M7D8N6sZ --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 854a4ccfd5301563e0d21e019793cd1524b69bffdbb690df8c24a487a54bad7c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:05:48,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:05:48,104 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed53e45-a6f1-42b4-adb6-1835118e8d91/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:05:48,110 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:05:48,110 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:05:48,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:05:48,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:05:48,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:05:48,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:05:48,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:05:48,141 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:05:48,142 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:05:48,142 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:05:48,143 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:05:48,143 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:05:48,144 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:05:48,145 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:05:48,145 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:05:48,146 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:05:48,146 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:05:48,147 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:05:48,148 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:05:48,149 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:05:48,149 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:05:48,150 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:05:48,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:05:48,151 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:05:48,151 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:05:48,152 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:05:48,152 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:05:48,153 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:05:48,153 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:05:48,154 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:05:48,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:05:48,155 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:05:48,156 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:05:48,156 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:05:48,157 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:05:48,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:05:48,160 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:05:48,161 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:05:48,162 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:05:48,163 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_6ed53e45-a6f1-42b4-adb6-1835118e8d91/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed53e45-a6f1-42b4-adb6-1835118e8d91/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 854a4ccfd5301563e0d21e019793cd1524b69bffdbb690df8c24a487a54bad7c [2023-11-19 05:05:48,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:05:48,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:05:48,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:05:48,526 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:05:48,527 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:05:48,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed53e45-a6f1-42b4-adb6-1835118e8d91/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-video-cx88-cx88-blackbird-ko--32_7a--d47b389.i [2023-11-19 05:05:52,331 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:05:53,043 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:05:53,044 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed53e45-a6f1-42b4-adb6-1835118e8d91/sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-video-cx88-cx88-blackbird-ko--32_7a--d47b389.i [2023-11-19 05:05:53,130 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed53e45-a6f1-42b4-adb6-1835118e8d91/bin/utaipan-verify-t7M7D8N6sZ/data/dbdf5d59f/78366c6a04194e3d90e3374defab6312/FLAG75fec65e8 [2023-11-19 05:05:53,152 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed53e45-a6f1-42b4-adb6-1835118e8d91/bin/utaipan-verify-t7M7D8N6sZ/data/dbdf5d59f/78366c6a04194e3d90e3374defab6312 [2023-11-19 05:05:53,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:05:53,162 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:05:53,168 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:05:53,168 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:05:53,176 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:05:53,177 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:53" (1/1) ... [2023-11-19 05:05:53,179 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb4c5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:53, skipping insertion in model container [2023-11-19 05:05:53,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:53" (1/1) ... [2023-11-19 05:05:53,342 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:05:55,543 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_6ed53e45-a6f1-42b4-adb6-1835118e8d91/sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-video-cx88-cx88-blackbird-ko--32_7a--d47b389.i[220073,220086] [2023-11-19 05:05:55,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:05:55,706 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:05:55,895 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.previous\n671:\n\tlock; incl %0": "+m" (v->counter)); [5048] [2023-11-19 05:05:55,897 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.previous\n671:\n\tlock; decl %0": "+m" (v->counter)); [5055] [2023-11-19 05:05:55,916 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [5224] [2023-11-19 05:05:55,917 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %0,%1": : "q" (val), "m" (*((unsigned char volatile *)addr)): "memory"); [5231] [2023-11-19 05:05:55,918 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [5238] [2023-11-19 05:05:56,142 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)__sd->list.next) [6182] [2023-11-19 05:05:56,189 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)__sd->list.next) [6288] [2023-11-19 05:05:56,350 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_6ed53e45-a6f1-42b4-adb6-1835118e8d91/sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-video-cx88-cx88-blackbird-ko--32_7a--d47b389.i[220073,220086] [2023-11-19 05:05:56,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:05:56,561 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:05:56,562 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:05:56,573 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:05:56,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:56 WrapperNode [2023-11-19 05:05:56,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:05:56,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:05:56,577 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:05:56,577 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:05:56,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:56" (1/1) ... [2023-11-19 05:05:56,726 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:56" (1/1) ... [2023-11-19 05:05:56,995 INFO L138 Inliner]: procedures = 228, calls = 1718, calls flagged for inlining = 120, calls inlined = 112, statements flattened = 3977 [2023-11-19 05:05:56,995 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:05:56,996 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:05:56,997 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:05:56,997 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:05:57,010 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:56" (1/1) ... [2023-11-19 05:05:57,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:56" (1/1) ... [2023-11-19 05:05:57,075 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:56" (1/1) ... [2023-11-19 05:05:57,076 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:56" (1/1) ... [2023-11-19 05:05:57,391 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:56" (1/1) ... [2023-11-19 05:05:57,426 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:56" (1/1) ... [2023-11-19 05:05:57,473 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:56" (1/1) ... [2023-11-19 05:05:57,500 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:56" (1/1) ... [2023-11-19 05:05:57,538 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:05:57,540 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:05:57,540 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:05:57,541 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:05:57,542 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:56" (1/1) ... [2023-11-19 05:05:57,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:05:57,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed53e45-a6f1-42b4-adb6-1835118e8d91/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:05:57,584 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed53e45-a6f1-42b4-adb6-1835118e8d91/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:05:57,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed53e45-a6f1-42b4-adb6-1835118e8d91/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:05:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 05:05:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 05:05:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-19 05:05:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-19 05:05:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:05:57,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:05:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure blackbird_initialize_codec [2023-11-19 05:05:57,634 INFO L138 BoogieDeclarations]: Found implementation of procedure blackbird_initialize_codec [2023-11-19 05:05:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_tvnorm [2023-11-19 05:05:57,635 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_tvnorm [2023-11-19 05:05:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_blackbird_advise_acquire [2023-11-19 05:05:57,635 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_blackbird_advise_acquire [2023-11-19 05:05:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 05:05:57,635 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 05:05:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 05:05:57,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 05:05:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-19 05:05:57,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-19 05:05:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-11-19 05:05:57,637 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-11-19 05:05:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-19 05:05:57,637 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-19 05:05:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_scale [2023-11-19 05:05:57,638 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_scale [2023-11-19 05:05:57,638 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-11-19 05:05:57,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-11-19 05:05:57,638 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_next [2023-11-19 05:05:57,638 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_next [2023-11-19 05:05:57,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_va_arg [2023-11-19 05:05:57,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_va_arg [2023-11-19 05:05:57,639 INFO L130 BoogieDeclarations]: Found specification of procedure memory_read [2023-11-19 05:05:57,639 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_read [2023-11-19 05:05:57,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:05:57,640 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 05:05:57,640 INFO L130 BoogieDeclarations]: Found specification of procedure cx2341x_update [2023-11-19 05:05:57,640 INFO L138 BoogieDeclarations]: Found implementation of procedure cx2341x_update [2023-11-19 05:05:57,640 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 05:05:57,640 INFO L130 BoogieDeclarations]: Found specification of procedure register_read [2023-11-19 05:05:57,641 INFO L138 BoogieDeclarations]: Found implementation of procedure register_read [2023-11-19 05:05:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_blackbird_advise_release [2023-11-19 05:05:57,641 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_blackbird_advise_release [2023-11-19 05:05:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:05:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure cx2341x_ext_ctrls [2023-11-19 05:05:57,642 INFO L138 BoogieDeclarations]: Found implementation of procedure cx2341x_ext_ctrls [2023-11-19 05:05:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-19 05:05:57,642 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-19 05:05:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_get_driver [2023-11-19 05:05:57,642 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_get_driver [2023-11-19 05:05:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2023-11-19 05:05:57,643 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2023-11-19 05:05:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure register_write [2023-11-19 05:05:57,643 INFO L138 BoogieDeclarations]: Found implementation of procedure register_write [2023-11-19 05:05:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure blackbird_start_codec [2023-11-19 05:05:57,644 INFO L138 BoogieDeclarations]: Found implementation of procedure blackbird_start_codec [2023-11-19 05:05:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:05:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:05:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:05:57,645 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:05:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2023-11-19 05:05:57,645 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2023-11-19 05:05:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_blackbird_remove [2023-11-19 05:05:57,646 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_blackbird_remove [2023-11-19 05:05:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure memory_write [2023-11-19 05:05:57,646 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_write [2023-11-19 05:05:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2023-11-19 05:05:57,646 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2023-11-19 05:05:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-19 05:05:57,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-19 05:05:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure blackbird_queryctrl [2023-11-19 05:05:57,647 INFO L138 BoogieDeclarations]: Found implementation of procedure blackbird_queryctrl [2023-11-19 05:05:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:05:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:05:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_cx88_core [2023-11-19 05:05:57,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_cx88_core [2023-11-19 05:05:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_cx88_core [2023-11-19 05:05:57,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_cx88_core [2023-11-19 05:05:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_video_mux [2023-11-19 05:05:57,649 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_video_mux [2023-11-19 05:05:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:05:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:05:57,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:05:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure mpeg_open [2023-11-19 05:05:57,650 INFO L138 BoogieDeclarations]: Found implementation of procedure mpeg_open [2023-11-19 05:05:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:05:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure blackbird_stop_codec [2023-11-19 05:05:57,650 INFO L138 BoogieDeclarations]: Found implementation of procedure blackbird_stop_codec [2023-11-19 05:05:57,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:05:57,651 INFO L130 BoogieDeclarations]: Found specification of procedure mpeg_release [2023-11-19 05:05:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure mpeg_release [2023-11-19 05:05:57,651 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-19 05:05:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-19 05:05:57,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:05:57,652 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_log_status [2023-11-19 05:05:57,652 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_log_status [2023-11-19 05:05:57,652 INFO L130 BoogieDeclarations]: Found specification of procedure mpeg_poll [2023-11-19 05:05:57,652 INFO L138 BoogieDeclarations]: Found implementation of procedure mpeg_poll [2023-11-19 05:05:57,653 INFO L130 BoogieDeclarations]: Found specification of procedure wait_ready_gpio0_bit1 [2023-11-19 05:05:57,653 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_ready_gpio0_bit1 [2023-11-19 05:05:57,653 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_blackbird_probe [2023-11-19 05:05:57,653 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_blackbird_probe [2023-11-19 05:05:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_ctrl_query [2023-11-19 05:05:57,654 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_ctrl_query [2023-11-19 05:05:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-11-19 05:05:57,654 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-11-19 05:05:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure blackbird_api_cmd [2023-11-19 05:05:57,655 INFO L138 BoogieDeclarations]: Found implementation of procedure blackbird_api_cmd [2023-11-19 05:05:57,655 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2023-11-19 05:05:57,655 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2023-11-19 05:05:57,655 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-19 05:05:57,655 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-19 05:05:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure mpeg_mmap [2023-11-19 05:05:57,656 INFO L138 BoogieDeclarations]: Found implementation of procedure mpeg_mmap [2023-11-19 05:05:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-19 05:05:57,656 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-19 05:05:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:05:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2023-11-19 05:05:57,657 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2023-11-19 05:05:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:05:57,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:05:58,685 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:05:58,691 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:06:13,798 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:06:15,041 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:06:15,042 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 05:06:15,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:06:15 BoogieIcfgContainer [2023-11-19 05:06:15,061 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:06:15,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:06:15,064 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:06:15,068 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:06:15,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:05:53" (1/3) ... [2023-11-19 05:06:15,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532a67c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:06:15, skipping insertion in model container [2023-11-19 05:06:15,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:56" (2/3) ... [2023-11-19 05:06:15,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532a67c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:06:15, skipping insertion in model container [2023-11-19 05:06:15,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:06:15" (3/3) ... [2023-11-19 05:06:15,073 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-media-video-cx88-cx88-blackbird-ko--32_7a--d47b389.i [2023-11-19 05:06:15,097 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:06:15,098 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:06:15,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:06:15,222 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;@1ef872c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:06:15,223 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:06:15,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 891 states, 528 states have (on average 1.2670454545454546) internal successors, (669), 538 states have internal predecessors, (669), 309 states have call successors, (309), 52 states have call predecessors, (309), 52 states have return successors, (309), 309 states have call predecessors, (309), 309 states have call successors, (309) [2023-11-19 05:06:15,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:06:15,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:15,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:06:15,259 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:06:15,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:15,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1145895694, now seen corresponding path program 1 times [2023-11-19 05:06:15,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:06:15,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125431549] [2023-11-19 05:06:15,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:15,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:06:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:06:16,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:06:16,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125431549] [2023-11-19 05:06:16,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125431549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:06:16,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:06:16,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:06:16,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111425891] [2023-11-19 05:06:16,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:06:16,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:06:16,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:06:16,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:06:16,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:06:16,337 INFO L87 Difference]: Start difference. First operand has 891 states, 528 states have (on average 1.2670454545454546) internal successors, (669), 538 states have internal predecessors, (669), 309 states have call successors, (309), 52 states have call predecessors, (309), 52 states have return successors, (309), 309 states have call predecessors, (309), 309 states have call successors, (309) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:06:17,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:06:17,651 INFO L93 Difference]: Finished difference Result 2104 states and 3044 transitions. [2023-11-19 05:06:17,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:06:17,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-19 05:06:17,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:06:17,701 INFO L225 Difference]: With dead ends: 2104 [2023-11-19 05:06:17,701 INFO L226 Difference]: Without dead ends: 1217 [2023-11-19 05:06:17,721 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 [2023-11-19 05:06:17,726 INFO L413 NwaCegarLoop]: 1140 mSDtfsCounter, 1171 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:06:17,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 1630 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 05:06:17,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-11-19 05:06:17,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1215. [2023-11-19 05:06:18,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 716 states have (on average 1.2360335195530727) internal successors, (885), 724 states have internal predecessors, (885), 425 states have call successors, (425), 74 states have call predecessors, (425), 73 states have return successors, (421), 421 states have call predecessors, (421), 421 states have call successors, (421) [2023-11-19 05:06:18,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1731 transitions. [2023-11-19 05:06:18,027 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1731 transitions. Word has length 14 [2023-11-19 05:06:18,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:06:18,028 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 1731 transitions. [2023-11-19 05:06:18,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:06:18,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1731 transitions. [2023-11-19 05:06:18,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:06:18,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:18,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:06:18,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:06:18,032 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:06:18,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:18,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1162416018, now seen corresponding path program 1 times [2023-11-19 05:06:18,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:06:18,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250779719] [2023-11-19 05:06:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:18,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:06:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:06:18,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:06:18,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250779719] [2023-11-19 05:06:18,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250779719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:06:18,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:06:18,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:06:18,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057527078] [2023-11-19 05:06:18,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:06:18,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:06:18,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:06:18,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:06:18,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:06:18,407 INFO L87 Difference]: Start difference. First operand 1215 states and 1731 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:06:19,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:06:19,192 INFO L93 Difference]: Finished difference Result 1217 states and 1732 transitions. [2023-11-19 05:06:19,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:06:19,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2023-11-19 05:06:19,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:06:19,206 INFO L225 Difference]: With dead ends: 1217 [2023-11-19 05:06:19,206 INFO L226 Difference]: Without dead ends: 1214 [2023-11-19 05:06:19,208 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 [2023-11-19 05:06:19,209 INFO L413 NwaCegarLoop]: 1135 mSDtfsCounter, 1263 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:06:19,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1263 Valid, 1135 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:06:19,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2023-11-19 05:06:19,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1214. [2023-11-19 05:06:19,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 716 states have (on average 1.23463687150838) internal successors, (884), 723 states have internal predecessors, (884), 424 states have call successors, (424), 74 states have call predecessors, (424), 73 states have return successors, (421), 421 states have call predecessors, (421), 421 states have call successors, (421) [2023-11-19 05:06:19,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1729 transitions. [2023-11-19 05:06:19,319 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1729 transitions. Word has length 15 [2023-11-19 05:06:19,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:06:19,320 INFO L495 AbstractCegarLoop]: Abstraction has 1214 states and 1729 transitions. [2023-11-19 05:06:19,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:06:19,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1729 transitions. [2023-11-19 05:06:19,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 05:06:19,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:19,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:06:19,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:06:19,322 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:06:19,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:19,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1674550929, now seen corresponding path program 1 times [2023-11-19 05:06:19,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:06:19,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304851501] [2023-11-19 05:06:19,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:19,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:06:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:06:19,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:06:19,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304851501] [2023-11-19 05:06:19,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304851501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:06:19,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:06:19,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:06:19,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091365287] [2023-11-19 05:06:19,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:06:19,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:06:19,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:06:19,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:06:19,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:06:19,568 INFO L87 Difference]: Start difference. First operand 1214 states and 1729 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:06:20,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:06:20,281 INFO L93 Difference]: Finished difference Result 1216 states and 1730 transitions. [2023-11-19 05:06:20,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:06:20,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-19 05:06:20,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:06:20,296 INFO L225 Difference]: With dead ends: 1216 [2023-11-19 05:06:20,296 INFO L226 Difference]: Without dead ends: 1213 [2023-11-19 05:06:20,298 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 [2023-11-19 05:06:20,300 INFO L413 NwaCegarLoop]: 1133 mSDtfsCounter, 1260 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:06:20,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 1133 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:06:20,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2023-11-19 05:06:20,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1213. [2023-11-19 05:06:20,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 716 states have (on average 1.2332402234636872) internal successors, (883), 722 states have internal predecessors, (883), 423 states have call successors, (423), 74 states have call predecessors, (423), 73 states have return successors, (421), 421 states have call predecessors, (421), 421 states have call successors, (421) [2023-11-19 05:06:20,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1727 transitions. [2023-11-19 05:06:20,438 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1727 transitions. Word has length 16 [2023-11-19 05:06:20,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:06:20,439 INFO L495 AbstractCegarLoop]: Abstraction has 1213 states and 1727 transitions. [2023-11-19 05:06:20,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:06:20,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1727 transitions. [2023-11-19 05:06:20,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 05:06:20,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:20,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:06:20,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:06:20,442 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:06:20,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:20,442 INFO L85 PathProgramCache]: Analyzing trace with hash 370868853, now seen corresponding path program 1 times [2023-11-19 05:06:20,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:06:20,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782837845] [2023-11-19 05:06:20,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:20,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:06:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:20,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:06:20,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:06:20,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782837845] [2023-11-19 05:06:20,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782837845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:06:20,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:06:20,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:06:20,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810590404] [2023-11-19 05:06:20,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:06:20,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:06:20,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:06:20,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:06:20,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:06:20,690 INFO L87 Difference]: Start difference. First operand 1213 states and 1727 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:06:21,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:06:21,425 INFO L93 Difference]: Finished difference Result 1215 states and 1728 transitions. [2023-11-19 05:06:21,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:06:21,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-11-19 05:06:21,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:06:21,500 INFO L225 Difference]: With dead ends: 1215 [2023-11-19 05:06:21,504 INFO L226 Difference]: Without dead ends: 1205 [2023-11-19 05:06:21,505 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 [2023-11-19 05:06:21,510 INFO L413 NwaCegarLoop]: 1132 mSDtfsCounter, 1257 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:06:21,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 1132 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:06:21,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2023-11-19 05:06:21,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1205. [2023-11-19 05:06:21,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 710 states have (on average 1.2295774647887323) internal successors, (873), 715 states have internal predecessors, (873), 421 states have call successors, (421), 74 states have call predecessors, (421), 73 states have return successors, (420), 420 states have call predecessors, (420), 420 states have call successors, (420) [2023-11-19 05:06:21,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1714 transitions. [2023-11-19 05:06:21,634 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1714 transitions. Word has length 17 [2023-11-19 05:06:21,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:06:21,634 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 1714 transitions. [2023-11-19 05:06:21,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:06:21,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1714 transitions. [2023-11-19 05:06:21,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-19 05:06:21,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:21,647 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 05:06:21,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:06:21,648 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:06:21,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:21,648 INFO L85 PathProgramCache]: Analyzing trace with hash 729908418, now seen corresponding path program 1 times [2023-11-19 05:06:21,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:06:21,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693483622] [2023-11-19 05:06:21,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:21,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:06:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:22,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:06:22,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:06:22,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693483622] [2023-11-19 05:06:22,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693483622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:06:22,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:06:22,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:06:22,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764017485] [2023-11-19 05:06:22,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:06:22,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:06:22,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:06:22,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:06:22,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:06:22,161 INFO L87 Difference]: Start difference. First operand 1205 states and 1714 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-19 05:06:23,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:06:23,392 INFO L93 Difference]: Finished difference Result 2654 states and 3823 transitions. [2023-11-19 05:06:23,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:06:23,393 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), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 48 [2023-11-19 05:06:23,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:06:23,415 INFO L225 Difference]: With dead ends: 2654 [2023-11-19 05:06:23,415 INFO L226 Difference]: Without dead ends: 1455 [2023-11-19 05:06:23,425 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 [2023-11-19 05:06:23,428 INFO L413 NwaCegarLoop]: 1122 mSDtfsCounter, 218 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:06:23,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 2230 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 05:06:23,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2023-11-19 05:06:23,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1455. [2023-11-19 05:06:23,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 872 states have (on average 1.2591743119266054) internal successors, (1098), 877 states have internal predecessors, (1098), 509 states have call successors, (509), 74 states have call predecessors, (509), 73 states have return successors, (508), 508 states have call predecessors, (508), 508 states have call successors, (508) [2023-11-19 05:06:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 2115 transitions. [2023-11-19 05:06:23,576 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 2115 transitions. Word has length 48 [2023-11-19 05:06:23,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:06:23,577 INFO L495 AbstractCegarLoop]: Abstraction has 1455 states and 2115 transitions. [2023-11-19 05:06:23,577 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), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-19 05:06:23,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 2115 transitions. [2023-11-19 05:06:23,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 05:06:23,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:23,585 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-11-19 05:06:23,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:06:23,585 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:06:23,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:23,586 INFO L85 PathProgramCache]: Analyzing trace with hash 952669351, now seen corresponding path program 1 times [2023-11-19 05:06:23,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:06:23,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004885657] [2023-11-19 05:06:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:23,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:06:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 05:06:24,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:06:24,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004885657] [2023-11-19 05:06:24,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004885657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:06:24,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:06:24,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:06:24,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93271988] [2023-11-19 05:06:24,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:06:24,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:06:24,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:06:24,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:06:24,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:06:24,085 INFO L87 Difference]: Start difference. First operand 1455 states and 2115 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-19 05:06:25,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:06:25,378 INFO L93 Difference]: Finished difference Result 1455 states and 2115 transitions. [2023-11-19 05:06:25,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:06:25,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 71 [2023-11-19 05:06:25,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:06:25,380 INFO L225 Difference]: With dead ends: 1455 [2023-11-19 05:06:25,380 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:06:25,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:06:25,391 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 540 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 2562 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:06:25,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 2562 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 05:06:25,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:06:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:06:25,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:06:25,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:06:25,393 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2023-11-19 05:06:25,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:06:25,393 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:06:25,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-19 05:06:25,394 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:06:25,394 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:06:25,397 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:06:25,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:06:25,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.