./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.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_039becc1-1504-4917-918f-372974fd8a43/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039becc1-1504-4917-918f-372974fd8a43/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_039becc1-1504-4917-918f-372974fd8a43/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039becc1-1504-4917-918f-372974fd8a43/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039becc1-1504-4917-918f-372974fd8a43/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_039becc1-1504-4917-918f-372974fd8a43/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 c3c8f5f42e93f38ff45b5fb218b90423c4fa8214795cc0db5e91266a2717c97b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:21:20,050 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:21:20,139 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039becc1-1504-4917-918f-372974fd8a43/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:21:20,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:21:20,145 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:21:20,171 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:21:20,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:21:20,172 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:21:20,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:21:20,174 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:21:20,174 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:21:20,175 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:21:20,176 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:21:20,176 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:21:20,177 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:21:20,178 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:21:20,178 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:21:20,179 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:21:20,180 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:21:20,180 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:21:20,181 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:21:20,182 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:21:20,183 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:21:20,183 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:21:20,184 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:21:20,184 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:21:20,185 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:21:20,186 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:21:20,186 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:21:20,187 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:21:20,187 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:21:20,187 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:21:20,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:21:20,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:21:20,189 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:21:20,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:21:20,189 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:21:20,190 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:21:20,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:21:20,190 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:21:20,191 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:21:20,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:21:20,193 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_039becc1-1504-4917-918f-372974fd8a43/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039becc1-1504-4917-918f-372974fd8a43/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3c8f5f42e93f38ff45b5fb218b90423c4fa8214795cc0db5e91266a2717c97b [2023-11-19 05:21:20,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:21:20,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:21:20,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:21:20,538 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:21:20,539 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:21:20,540 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039becc1-1504-4917-918f-372974fd8a43/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2023-11-19 05:21:23,852 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:21:24,604 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:21:24,605 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039becc1-1504-4917-918f-372974fd8a43/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2023-11-19 05:21:24,655 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039becc1-1504-4917-918f-372974fd8a43/bin/utaipan-verify-t7M7D8N6sZ/data/62c326326/b08d7b0e6c974d3ca7ac6252109b4ccf/FLAGcd6c727aa [2023-11-19 05:21:24,675 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039becc1-1504-4917-918f-372974fd8a43/bin/utaipan-verify-t7M7D8N6sZ/data/62c326326/b08d7b0e6c974d3ca7ac6252109b4ccf [2023-11-19 05:21:24,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:21:24,685 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:21:24,688 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:21:24,688 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:21:24,694 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:21:24,697 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:24" (1/1) ... [2023-11-19 05:21:24,698 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22cbfa94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:24, skipping insertion in model container [2023-11-19 05:21:24,698 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:24" (1/1) ... [2023-11-19 05:21:24,836 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:21:25,979 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_039becc1-1504-4917-918f-372974fd8a43/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i[98402,98415] [2023-11-19 05:21:26,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:21:26,997 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:21:27,130 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [3258] [2023-11-19 05:21:27,133 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [3265] [2023-11-19 05:21:27,134 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapq %0": "=r" (val): "0" (val)); [3272] [2023-11-19 05:21:27,135 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [3305] [2023-11-19 05:21:27,136 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3308] [2023-11-19 05:21:27,136 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3311] [2023-11-19 05:21:27,137 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3314] [2023-11-19 05:21:27,146 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_039becc1-1504-4917-918f-372974fd8a43/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i[98402,98415] [2023-11-19 05:21:27,230 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4083] [2023-11-19 05:21:27,231 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4087] [2023-11-19 05:21:27,233 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x), "+m" (*__ptr): "0" (__x): "memory"); [4110] [2023-11-19 05:21:27,234 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x), "+m" (*__ptr___0): "0" (__x): "memory"); [4115] [2023-11-19 05:21:27,235 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x), "+m" (*__ptr___1): "0" (__x): "memory"); [4120] [2023-11-19 05:21:27,235 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x), "+m" (*__ptr___2): "0" (__x): "memory"); [4125] [2023-11-19 05:21:27,269 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4584] [2023-11-19 05:21:27,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:21:27,628 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:21:27,629 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:21:27,638 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:21:27,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27 WrapperNode [2023-11-19 05:21:27,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:21:27,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:21:27,641 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:21:27,641 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:21:27,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:27,760 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:27,914 INFO L138 Inliner]: procedures = 256, calls = 2522, calls flagged for inlining = 117, calls inlined = 96, statements flattened = 4208 [2023-11-19 05:21:27,914 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:21:27,915 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:21:27,915 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:21:27,915 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:21:27,925 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:27,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:27,946 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:27,947 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:28,107 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:28,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:28,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:28,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:28,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:21:28,228 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:21:28,228 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:21:28,228 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:21:28,229 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (1/1) ... [2023-11-19 05:21:28,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:21:28,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039becc1-1504-4917-918f-372974fd8a43/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:28,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039becc1-1504-4917-918f-372974fd8a43/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:21:28,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039becc1-1504-4917-918f-372974fd8a43/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:21:28,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 05:21:28,308 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 05:21:28,308 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-19 05:21:28,308 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-19 05:21:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-19 05:21:28,309 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-19 05:21:28,310 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-11-19 05:21:28,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:21:28,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:21:28,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:21:28,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:21:28,311 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2023-11-19 05:21:28,311 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2023-11-19 05:21:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-19 05:21:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-19 05:21:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2023-11-19 05:21:28,314 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2023-11-19 05:21:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:21:28,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:21:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2023-11-19 05:21:28,315 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2023-11-19 05:21:28,315 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2023-11-19 05:21:28,316 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2023-11-19 05:21:28,316 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2023-11-19 05:21:28,316 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2023-11-19 05:21:28,316 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 05:21:28,316 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 05:21:28,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 05:21:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 05:21:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2023-11-19 05:21:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2023-11-19 05:21:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2023-11-19 05:21:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2023-11-19 05:21:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_imon_context [2023-11-19 05:21:28,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_imon_context [2023-11-19 05:21:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:21:28,318 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:21:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-19 05:21:28,318 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-19 05:21:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 05:21:28,318 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 05:21:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_driver_lock [2023-11-19 05:21:28,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_driver_lock [2023-11-19 05:21:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:21:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2023-11-19 05:21:28,319 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2023-11-19 05:21:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:21:28,320 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2023-11-19 05:21:28,320 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2023-11-19 05:21:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-19 05:21:28,321 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-19 05:21:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:21:28,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:21:28,322 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:21:28,322 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:21:28,322 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 05:21:28,322 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 05:21:28,322 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 05:21:28,322 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 05:21:28,323 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 05:21:28,323 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 05:21:28,323 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-19 05:21:28,324 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-19 05:21:28,324 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2023-11-19 05:21:28,324 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2023-11-19 05:21:28,324 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2023-11-19 05:21:28,324 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2023-11-19 05:21:28,324 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-19 05:21:28,324 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-19 05:21:28,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:21:28,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-19 05:21:28,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-19 05:21:28,326 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-19 05:21:28,326 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-19 05:21:28,326 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2023-11-19 05:21:28,326 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2023-11-19 05:21:28,326 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-19 05:21:28,326 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-19 05:21:28,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:21:28,327 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-19 05:21:28,327 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-19 05:21:28,327 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2023-11-19 05:21:28,327 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2023-11-19 05:21:28,327 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2023-11-19 05:21:28,327 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2023-11-19 05:21:28,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:21:28,328 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2023-11-19 05:21:28,328 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2023-11-19 05:21:28,328 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2023-11-19 05:21:28,328 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2023-11-19 05:21:28,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 05:21:28,328 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 05:21:28,329 INFO L130 BoogieDeclarations]: Found specification of procedure lcd_write [2023-11-19 05:21:28,329 INFO L138 BoogieDeclarations]: Found implementation of procedure lcd_write [2023-11-19 05:21:28,329 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-19 05:21:28,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-19 05:21:28,330 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-19 05:21:28,330 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-19 05:21:28,330 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-11-19 05:21:28,330 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-11-19 05:21:28,330 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:21:28,331 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:21:28,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:21:28,332 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2023-11-19 05:21:28,332 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2023-11-19 05:21:28,332 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2023-11-19 05:21:28,332 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2023-11-19 05:21:28,332 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2023-11-19 05:21:28,332 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2023-11-19 05:21:28,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:21:28,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:21:28,333 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2023-11-19 05:21:28,333 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2023-11-19 05:21:28,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:21:28,333 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2023-11-19 05:21:28,333 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2023-11-19 05:21:28,333 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2023-11-19 05:21:28,334 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2023-11-19 05:21:28,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_imon_context [2023-11-19 05:21:28,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_imon_context [2023-11-19 05:21:28,334 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-19 05:21:28,335 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-19 05:21:28,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:21:28,335 INFO L130 BoogieDeclarations]: Found specification of procedure vfd_write [2023-11-19 05:21:28,335 INFO L138 BoogieDeclarations]: Found implementation of procedure vfd_write [2023-11-19 05:21:28,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:21:28,335 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2023-11-19 05:21:28,336 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2023-11-19 05:21:28,336 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 05:21:28,336 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2023-11-19 05:21:28,336 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2023-11-19 05:21:28,336 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2023-11-19 05:21:28,338 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2023-11-19 05:21:28,339 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2023-11-19 05:21:28,341 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2023-11-19 05:21:28,342 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-19 05:21:28,342 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-19 05:21:28,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_driver_lock [2023-11-19 05:21:28,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_driver_lock [2023-11-19 05:21:28,343 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2023-11-19 05:21:28,344 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2023-11-19 05:21:28,344 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2023-11-19 05:21:28,344 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2023-11-19 05:21:28,350 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2023-11-19 05:21:28,350 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2023-11-19 05:21:28,350 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-19 05:21:28,350 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-19 05:21:28,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:21:28,351 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-19 05:21:28,351 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-19 05:21:28,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:21:28,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:21:28,920 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:21:28,924 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:21:29,595 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:21:35,969 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:21:36,876 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:21:36,877 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 05:21:36,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:36 BoogieIcfgContainer [2023-11-19 05:21:36,894 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:21:36,897 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:21:36,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:21:36,900 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:21:36,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:21:24" (1/3) ... [2023-11-19 05:21:36,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ebd3dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:36, skipping insertion in model container [2023-11-19 05:21:36,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:27" (2/3) ... [2023-11-19 05:21:36,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ebd3dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:36, skipping insertion in model container [2023-11-19 05:21:36,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:36" (3/3) ... [2023-11-19 05:21:36,905 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2023-11-19 05:21:36,926 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:21:36,926 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:21:37,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:21:37,039 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;@424fe7a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:21:37,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:21:37,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 1082 states, 663 states have (on average 1.3363499245852186) internal successors, (886), 685 states have internal predecessors, (886), 351 states have call successors, (351), 67 states have call predecessors, (351), 66 states have return successors, (344), 343 states have call predecessors, (344), 344 states have call successors, (344) [2023-11-19 05:21:37,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 05:21:37,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:37,077 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:21:37,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:21:37,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:37,085 INFO L85 PathProgramCache]: Analyzing trace with hash -733819597, now seen corresponding path program 1 times [2023-11-19 05:21:37,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:37,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663462554] [2023-11-19 05:21:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:37,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 05:21:37,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:37,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663462554] [2023-11-19 05:21:37,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663462554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:37,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:37,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:37,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717427326] [2023-11-19 05:21:37,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:37,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:21:37,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:38,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:21:38,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:21:38,009 INFO L87 Difference]: Start difference. First operand has 1082 states, 663 states have (on average 1.3363499245852186) internal successors, (886), 685 states have internal predecessors, (886), 351 states have call successors, (351), 67 states have call predecessors, (351), 66 states have return successors, (344), 343 states have call predecessors, (344), 344 states have call successors, (344) 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 05:21:40,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:21:43,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:43,702 INFO L93 Difference]: Finished difference Result 3130 states and 4664 transitions. [2023-11-19 05:21:43,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:21:43,705 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 69 [2023-11-19 05:21:43,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:43,736 INFO L225 Difference]: With dead ends: 3130 [2023-11-19 05:21:43,736 INFO L226 Difference]: Without dead ends: 2049 [2023-11-19 05:21:43,748 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 05:21:43,751 INFO L413 NwaCegarLoop]: 1446 mSDtfsCounter, 1449 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 2850 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:43,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 2850 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 263 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2023-11-19 05:21:43,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2023-11-19 05:21:44,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 2035. [2023-11-19 05:21:44,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 1256 states have (on average 1.320063694267516) internal successors, (1658), 1277 states have internal predecessors, (1658), 649 states have call successors, (649), 130 states have call predecessors, (649), 129 states have return successors, (642), 639 states have call predecessors, (642), 642 states have call successors, (642) [2023-11-19 05:21:44,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 2949 transitions. [2023-11-19 05:21:44,037 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 2949 transitions. Word has length 69 [2023-11-19 05:21:44,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:44,038 INFO L495 AbstractCegarLoop]: Abstraction has 2035 states and 2949 transitions. [2023-11-19 05:21:44,039 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 05:21:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 2949 transitions. [2023-11-19 05:21:44,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-19 05:21:44,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:44,044 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:21:44,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:21:44,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:21:44,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:44,045 INFO L85 PathProgramCache]: Analyzing trace with hash 56975245, now seen corresponding path program 1 times [2023-11-19 05:21:44,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:44,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613257987] [2023-11-19 05:21:44,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:44,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:44,551 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 05:21:44,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:44,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613257987] [2023-11-19 05:21:44,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613257987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:44,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:44,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:44,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173460212] [2023-11-19 05:21:44,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:44,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:21:44,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:44,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:21:44,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:21:44,562 INFO L87 Difference]: Start difference. First operand 2035 states and 2949 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 05:21:48,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:21:50,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:50,483 INFO L93 Difference]: Finished difference Result 4984 states and 7197 transitions. [2023-11-19 05:21:50,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:21:50,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 70 [2023-11-19 05:21:50,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:50,509 INFO L225 Difference]: With dead ends: 4984 [2023-11-19 05:21:50,510 INFO L226 Difference]: Without dead ends: 2969 [2023-11-19 05:21:50,518 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 05:21:50,520 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 752 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 2887 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:50,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 2887 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 259 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2023-11-19 05:21:50,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2023-11-19 05:21:50,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 2956. [2023-11-19 05:21:50,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2956 states, 1847 states have (on average 1.329182458040065) internal successors, (2455), 1868 states have internal predecessors, (2455), 907 states have call successors, (907), 202 states have call predecessors, (907), 201 states have return successors, (900), 897 states have call predecessors, (900), 900 states have call successors, (900) [2023-11-19 05:21:50,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2956 states to 2956 states and 4262 transitions. [2023-11-19 05:21:50,704 INFO L78 Accepts]: Start accepts. Automaton has 2956 states and 4262 transitions. Word has length 70 [2023-11-19 05:21:50,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:50,704 INFO L495 AbstractCegarLoop]: Abstraction has 2956 states and 4262 transitions. [2023-11-19 05:21:50,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 05:21:50,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2956 states and 4262 transitions. [2023-11-19 05:21:50,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 05:21:50,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:50,708 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:21:50,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:21:50,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:21:50,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:50,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2077151757, now seen corresponding path program 1 times [2023-11-19 05:21:50,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:50,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709394917] [2023-11-19 05:21:50,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:50,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:51,201 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 05:21:51,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:51,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709394917] [2023-11-19 05:21:51,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709394917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:51,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:51,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:51,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322067396] [2023-11-19 05:21:51,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:51,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:21:51,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:51,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:21:51,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:21:51,205 INFO L87 Difference]: Start difference. First operand 2956 states and 4262 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 05:21:53,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:21:56,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:21:57,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:57,243 INFO L93 Difference]: Finished difference Result 8766 states and 12636 transitions. [2023-11-19 05:21:57,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:21:57,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 68 [2023-11-19 05:21:57,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:57,293 INFO L225 Difference]: With dead ends: 8766 [2023-11-19 05:21:57,293 INFO L226 Difference]: Without dead ends: 5836 [2023-11-19 05:21:57,309 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 05:21:57,313 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 1480 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:57,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 2956 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-19 05:21:57,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2023-11-19 05:21:57,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 5828. [2023-11-19 05:21:57,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5828 states, 3647 states have (on average 1.327392377296408) internal successors, (4841), 3682 states have internal predecessors, (4841), 1779 states have call successors, (1779), 402 states have call predecessors, (1779), 401 states have return successors, (1772), 1767 states have call predecessors, (1772), 1772 states have call successors, (1772) [2023-11-19 05:21:57,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5828 states to 5828 states and 8392 transitions. [2023-11-19 05:21:57,775 INFO L78 Accepts]: Start accepts. Automaton has 5828 states and 8392 transitions. Word has length 68 [2023-11-19 05:21:57,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:57,776 INFO L495 AbstractCegarLoop]: Abstraction has 5828 states and 8392 transitions. [2023-11-19 05:21:57,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 05:21:57,776 INFO L276 IsEmpty]: Start isEmpty. Operand 5828 states and 8392 transitions. [2023-11-19 05:21:57,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-19 05:21:57,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:57,778 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:21:57,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:21:57,779 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:21:57,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:57,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1214755352, now seen corresponding path program 1 times [2023-11-19 05:21:57,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:57,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355369709] [2023-11-19 05:21:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:57,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 05:21:58,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:58,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355369709] [2023-11-19 05:21:58,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355369709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:58,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:58,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:58,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942215697] [2023-11-19 05:21:58,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:58,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:21:58,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:58,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:21:58,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:21:58,159 INFO L87 Difference]: Start difference. First operand 5828 states and 8392 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 05:21:59,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:22:03,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:03,362 INFO L93 Difference]: Finished difference Result 16545 states and 23781 transitions. [2023-11-19 05:22:03,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:22:03,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 75 [2023-11-19 05:22:03,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:03,466 INFO L225 Difference]: With dead ends: 16545 [2023-11-19 05:22:03,467 INFO L226 Difference]: Without dead ends: 10743 [2023-11-19 05:22:03,497 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 05:22:03,501 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 1435 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:03,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 3048 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-19 05:22:03,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10743 states. [2023-11-19 05:22:04,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10743 to 10730. [2023-11-19 05:22:04,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10730 states, 6733 states have (on average 1.3267488489529184) internal successors, (8933), 6796 states have internal predecessors, (8933), 3239 states have call successors, (3239), 758 states have call predecessors, (3239), 757 states have return successors, (3232), 3223 states have call predecessors, (3232), 3232 states have call successors, (3232) [2023-11-19 05:22:04,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10730 states to 10730 states and 15404 transitions. [2023-11-19 05:22:04,269 INFO L78 Accepts]: Start accepts. Automaton has 10730 states and 15404 transitions. Word has length 75 [2023-11-19 05:22:04,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:04,269 INFO L495 AbstractCegarLoop]: Abstraction has 10730 states and 15404 transitions. [2023-11-19 05:22:04,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 05:22:04,271 INFO L276 IsEmpty]: Start isEmpty. Operand 10730 states and 15404 transitions. [2023-11-19 05:22:04,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 05:22:04,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:04,273 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:22:04,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:22:04,273 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:04,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:04,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1613473582, now seen corresponding path program 1 times [2023-11-19 05:22:04,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:04,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131084432] [2023-11-19 05:22:04,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:04,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:04,705 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-19 05:22:04,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:04,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131084432] [2023-11-19 05:22:04,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131084432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:04,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:04,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:22:04,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558433336] [2023-11-19 05:22:04,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:04,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:22:04,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:04,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:22:04,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:22:04,708 INFO L87 Difference]: Start difference. First operand 10730 states and 15404 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, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-19 05:22:07,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:22:09,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:09,513 INFO L93 Difference]: Finished difference Result 11914 states and 16681 transitions. [2023-11-19 05:22:09,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:22:09,514 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, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 78 [2023-11-19 05:22:09,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:09,593 INFO L225 Difference]: With dead ends: 11914 [2023-11-19 05:22:09,593 INFO L226 Difference]: Without dead ends: 11910 [2023-11-19 05:22:09,599 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 05:22:09,600 INFO L413 NwaCegarLoop]: 1452 mSDtfsCounter, 873 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:09,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 2182 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 216 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2023-11-19 05:22:09,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11910 states. [2023-11-19 05:22:10,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11910 to 11906. [2023-11-19 05:22:10,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11906 states, 7422 states have (on average 1.3127189436809485) internal successors, (9743), 7483 states have internal predecessors, (9743), 3461 states have call successors, (3461), 1023 states have call predecessors, (3461), 1022 states have return successors, (3456), 3447 states have call predecessors, (3456), 3456 states have call successors, (3456) [2023-11-19 05:22:10,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11906 states to 11906 states and 16660 transitions. [2023-11-19 05:22:10,418 INFO L78 Accepts]: Start accepts. Automaton has 11906 states and 16660 transitions. Word has length 78 [2023-11-19 05:22:10,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:10,419 INFO L495 AbstractCegarLoop]: Abstraction has 11906 states and 16660 transitions. [2023-11-19 05:22:10,419 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, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-19 05:22:10,420 INFO L276 IsEmpty]: Start isEmpty. Operand 11906 states and 16660 transitions. [2023-11-19 05:22:10,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 05:22:10,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:10,423 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:22:10,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:22:10,423 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:10,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:10,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1521263646, now seen corresponding path program 1 times [2023-11-19 05:22:10,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:10,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960919633] [2023-11-19 05:22:10,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:10,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:10,784 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-19 05:22:10,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:10,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960919633] [2023-11-19 05:22:10,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960919633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:10,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:10,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:22:10,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671608168] [2023-11-19 05:22:10,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:10,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:22:10,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:10,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:22:10,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:22:10,788 INFO L87 Difference]: Start difference. First operand 11906 states and 16660 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)