./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6faeb3-1338-4724-930b-95224b6be7c5/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6faeb3-1338-4724-930b-95224b6be7c5/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_ed6faeb3-1338-4724-930b-95224b6be7c5/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6faeb3-1338-4724-930b-95224b6be7c5/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6faeb3-1338-4724-930b-95224b6be7c5/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_ed6faeb3-1338-4724-930b-95224b6be7c5/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 c247f7785da4bad35b227af25ef3ffc26bc077e1b05f1520f2d707a8c759410c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:12:03,488 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:12:03,591 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6faeb3-1338-4724-930b-95224b6be7c5/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:12:03,598 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:12:03,599 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:12:03,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:12:03,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:12:03,637 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:12:03,638 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:12:03,639 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:12:03,640 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:12:03,640 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:12:03,641 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:12:03,642 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:12:03,642 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:12:03,643 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:12:03,644 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:12:03,645 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:12:03,646 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:12:03,646 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:12:03,647 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:12:03,648 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:12:03,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:12:03,650 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:12:03,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:12:03,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:12:03,652 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:12:03,653 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:12:03,653 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:12:03,654 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:12:03,654 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:12:03,655 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:12:03,656 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:12:03,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:12:03,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:12:03,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:12:03,658 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:12:03,659 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:12:03,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:12:03,660 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:12:03,660 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:12:03,661 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:12:03,661 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_ed6faeb3-1338-4724-930b-95224b6be7c5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6faeb3-1338-4724-930b-95224b6be7c5/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c247f7785da4bad35b227af25ef3ffc26bc077e1b05f1520f2d707a8c759410c [2023-11-19 05:12:04,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:12:04,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:12:04,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:12:04,067 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:12:04,067 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:12:04,068 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6faeb3-1338-4724-930b-95224b6be7c5/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i [2023-11-19 05:12:07,528 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:12:08,370 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:12:08,370 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6faeb3-1338-4724-930b-95224b6be7c5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i [2023-11-19 05:12:08,424 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6faeb3-1338-4724-930b-95224b6be7c5/bin/utaipan-verify-t7M7D8N6sZ/data/62c5111b9/737c8095a88648a1874e7e6be852bdae/FLAGc0dc5000c [2023-11-19 05:12:08,441 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6faeb3-1338-4724-930b-95224b6be7c5/bin/utaipan-verify-t7M7D8N6sZ/data/62c5111b9/737c8095a88648a1874e7e6be852bdae [2023-11-19 05:12:08,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:12:08,446 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:12:08,447 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:12:08,447 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:12:08,454 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:12:08,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:12:08" (1/1) ... [2023-11-19 05:12:08,456 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c4f21b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:08, skipping insertion in model container [2023-11-19 05:12:08,456 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:12:08" (1/1) ... [2023-11-19 05:12:08,695 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:12:11,747 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_ed6faeb3-1338-4724-930b-95224b6be7c5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298288,298301] [2023-11-19 05:12:11,755 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_ed6faeb3-1338-4724-930b-95224b6be7c5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298435,298448] [2023-11-19 05:12:11,756 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_ed6faeb3-1338-4724-930b-95224b6be7c5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298574,298587] [2023-11-19 05:12:11,757 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6faeb3-1338-4724-930b-95224b6be7c5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298732,298745] [2023-11-19 05:12:11,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:12:11,942 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:12:12,099 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5396] [2023-11-19 05:12:12,101 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [5403] [2023-11-19 05:12:12,101 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5410] [2023-11-19 05:12:12,368 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_ed6faeb3-1338-4724-930b-95224b6be7c5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298288,298301] [2023-11-19 05:12:12,369 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_ed6faeb3-1338-4724-930b-95224b6be7c5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298435,298448] [2023-11-19 05:12:12,370 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_ed6faeb3-1338-4724-930b-95224b6be7c5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298574,298587] [2023-11-19 05:12:12,370 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_ed6faeb3-1338-4724-930b-95224b6be7c5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298732,298745] [2023-11-19 05:12:12,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:12:12,649 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:12:12,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:12 WrapperNode [2023-11-19 05:12:12,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:12:12,652 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:12:12,652 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:12:12,652 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:12:12,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:12" (1/1) ... [2023-11-19 05:12:12,867 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:12" (1/1) ... [2023-11-19 05:12:13,144 INFO L138 Inliner]: procedures = 311, calls = 3195, calls flagged for inlining = 173, calls inlined = 160, statements flattened = 5946 [2023-11-19 05:12:13,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:12:13,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:12:13,147 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:12:13,147 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:12:13,158 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:12" (1/1) ... [2023-11-19 05:12:13,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:12" (1/1) ... [2023-11-19 05:12:13,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:12" (1/1) ... [2023-11-19 05:12:13,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:12" (1/1) ... [2023-11-19 05:12:13,373 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:12" (1/1) ... [2023-11-19 05:12:13,412 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:12" (1/1) ... [2023-11-19 05:12:13,509 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:12" (1/1) ... [2023-11-19 05:12:13,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:12" (1/1) ... [2023-11-19 05:12:13,578 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:12:13,579 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:12:13,579 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:12:13,579 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:12:13,588 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:12" (1/1) ... [2023-11-19 05:12:13,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:12:13,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6faeb3-1338-4724-930b-95224b6be7c5/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:13,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6faeb3-1338-4724-930b-95224b6be7c5/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:12:13,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6faeb3-1338-4724-930b-95224b6be7c5/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:12:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure read_bulk_callback [2023-11-19 05:12:13,669 INFO L138 BoogieDeclarations]: Found implementation of procedure read_bulk_callback [2023-11-19 05:12:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-19 05:12:13,669 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-19 05:12:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-19 05:12:13,669 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-19 05:12:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:12:13,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:12:13,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:12:13,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:12:13,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 05:12:13,672 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 05:12:13,672 INFO L130 BoogieDeclarations]: Found specification of procedure write_mii_word [2023-11-19 05:12:13,673 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mii_word [2023-11-19 05:12:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2023-11-19 05:12:13,673 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2023-11-19 05:12:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:12:13,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:12:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2023-11-19 05:12:13,675 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2023-11-19 05:12:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure set_carrier [2023-11-19 05:12:13,675 INFO L138 BoogieDeclarations]: Found implementation of procedure set_carrier [2023-11-19 05:12:13,678 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-19 05:12:13,678 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-19 05:12:13,678 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2023-11-19 05:12:13,679 INFO L138 BoogieDeclarations]: Found implementation of procedure strsep [2023-11-19 05:12:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure read_mii_word [2023-11-19 05:12:13,680 INFO L138 BoogieDeclarations]: Found implementation of procedure read_mii_word [2023-11-19 05:12:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-19 05:12:13,680 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-19 05:12:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-11-19 05:12:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-11-19 05:12:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_open [2023-11-19 05:12:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_open [2023-11-19 05:12:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-19 05:12:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-19 05:12:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2023-11-19 05:12:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2023-11-19 05:12:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-11-19 05:12:13,687 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-11-19 05:12:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:12:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure read_eprom_word [2023-11-19 05:12:13,688 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eprom_word [2023-11-19 05:12:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-11-19 05:12:13,688 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-11-19 05:12:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:12:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_nway_reset [2023-11-19 05:12:13,689 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_nway_reset [2023-11-19 05:12:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-19 05:12:13,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-19 05:12:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-19 05:12:13,690 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-19 05:12:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-19 05:12:13,690 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-19 05:12:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 05:12:13,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 05:12:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_resume [2023-11-19 05:12:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_resume [2023-11-19 05:12:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:12:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:12:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:12:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:12:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 05:12:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 05:12:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2023-11-19 05:12:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2023-11-19 05:12:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2023-11-19 05:12:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2023-11-19 05:12:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_tx_timeout [2023-11-19 05:12:13,694 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_tx_timeout [2023-11-19 05:12:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-19 05:12:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-19 05:12:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_dec_workqueue [2023-11-19 05:12:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_dec_workqueue [2023-11-19 05:12:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-19 05:12:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-19 05:12:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-19 05:12:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-19 05:12:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urbs [2023-11-19 05:12:13,696 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urbs [2023-11-19 05:12:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-11-19 05:12:13,696 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-11-19 05:12:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-19 05:12:13,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-19 05:12:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_disconnect [2023-11-19 05:12:13,697 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_disconnect [2023-11-19 05:12:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-19 05:12:13,697 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-19 05:12:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:12:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2023-11-19 05:12:13,697 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2023-11-19 05:12:13,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:12:13,698 INFO L130 BoogieDeclarations]: Found specification of procedure __mii_op [2023-11-19 05:12:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __mii_op [2023-11-19 05:12:13,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-19 05:12:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-19 05:12:13,698 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-19 05:12:13,699 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-19 05:12:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:12:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-19 05:12:13,699 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-19 05:12:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-19 05:12:13,699 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-19 05:12:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure intr_callback [2023-11-19 05:12:13,700 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_callback [2023-11-19 05:12:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 05:12:13,700 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 05:12:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_wol [2023-11-19 05:12:13,700 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_wol [2023-11-19 05:12:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb_ip_align [2023-11-19 05:12:13,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb_ip_align [2023-11-19 05:12:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-19 05:12:13,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-19 05:12:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-19 05:12:13,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-19 05:12:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-19 05:12:13,702 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-19 05:12:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-19 05:12:13,702 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-19 05:12:13,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2023-11-19 05:12:13,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2023-11-19 05:12:13,703 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:12:13,703 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:12:13,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:12:13,703 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-19 05:12:13,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-19 05:12:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:12:13,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:12:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_multicast [2023-11-19 05:12:13,704 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_multicast [2023-11-19 05:12:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure set_register [2023-11-19 05:12:13,704 INFO L138 BoogieDeclarations]: Found implementation of procedure set_register [2023-11-19 05:12:13,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:12:13,705 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-19 05:12:13,705 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-19 05:12:13,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-19 05:12:13,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-19 05:12:13,705 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2023-11-19 05:12:13,706 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2023-11-19 05:12:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:12:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-19 05:12:13,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-19 05:12:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:12:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-19 05:12:13,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-19 05:12:13,707 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2023-11-19 05:12:13,707 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2023-11-19 05:12:13,707 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-19 05:12:13,707 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-19 05:12:13,707 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-19 05:12:13,708 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-19 05:12:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-19 05:12:13,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-19 05:12:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_close [2023-11-19 05:12:13,708 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_close [2023-11-19 05:12:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-19 05:12:13,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-19 05:12:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure get_registers [2023-11-19 05:12:13,709 INFO L138 BoogieDeclarations]: Found implementation of procedure get_registers [2023-11-19 05:12:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2023-11-19 05:12:13,709 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2023-11-19 05:12:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2023-11-19 05:12:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_3_4 [2023-11-19 05:12:13,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_3_4 [2023-11-19 05:12:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:12:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure set_registers [2023-11-19 05:12:13,710 INFO L138 BoogieDeclarations]: Found implementation of procedure set_registers [2023-11-19 05:12:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-19 05:12:13,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-19 05:12:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:12:13,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:12:14,608 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:12:14,613 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:12:15,565 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:12:23,961 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-19 05:12:24,524 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:12:27,528 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:12:27,528 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:12:27,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:12:27 BoogieIcfgContainer [2023-11-19 05:12:27,549 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:12:27,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:12:27,555 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:12:27,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:12:27,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:12:08" (1/3) ... [2023-11-19 05:12:27,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2febf298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:12:27, skipping insertion in model container [2023-11-19 05:12:27,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:12" (2/3) ... [2023-11-19 05:12:27,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2febf298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:12:27, skipping insertion in model container [2023-11-19 05:12:27,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:12:27" (3/3) ... [2023-11-19 05:12:27,568 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i [2023-11-19 05:12:27,596 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:12:27,596 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 05:12:27,730 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:12:27,741 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;@1e688d34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:12:27,741 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 05:12:27,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 1129 states, 714 states have (on average 1.334733893557423) internal successors, (953), 723 states have internal predecessors, (953), 337 states have call successors, (337), 77 states have call predecessors, (337), 76 states have return successors, (331), 329 states have call predecessors, (331), 331 states have call successors, (331) [2023-11-19 05:12:27,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-19 05:12:27,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:27,802 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:12:27,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:12:27,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:27,812 INFO L85 PathProgramCache]: Analyzing trace with hash -266642814, now seen corresponding path program 1 times [2023-11-19 05:12:27,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:27,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692226861] [2023-11-19 05:12:27,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:27,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:29,333 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-11-19 05:12:29,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:29,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692226861] [2023-11-19 05:12:29,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692226861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:29,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:29,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:12:29,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590583246] [2023-11-19 05:12:29,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:29,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:12:29,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:29,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:12:29,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:12:29,391 INFO L87 Difference]: Start difference. First operand has 1129 states, 714 states have (on average 1.334733893557423) internal successors, (953), 723 states have internal predecessors, (953), 337 states have call successors, (337), 77 states have call predecessors, (337), 76 states have return successors, (331), 329 states have call predecessors, (331), 331 states have call successors, (331) 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 05:12:34,742 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 05:12:36,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:12:38,847 WARN L539 Checker$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 05:12:39,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:39,178 INFO L93 Difference]: Finished difference Result 3245 states and 4667 transitions. [2023-11-19 05:12:39,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:12:39,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2023-11-19 05:12:39,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:39,256 INFO L225 Difference]: With dead ends: 3245 [2023-11-19 05:12:39,256 INFO L226 Difference]: Without dead ends: 2131 [2023-11-19 05:12:39,273 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 05:12:39,279 INFO L413 NwaCegarLoop]: 1374 mSDtfsCounter, 1521 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:39,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 2663 Invalid, 524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 514 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2023-11-19 05:12:39,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2023-11-19 05:12:39,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 2129. [2023-11-19 05:12:39,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 1359 states have (on average 1.3311258278145695) internal successors, (1809), 1376 states have internal predecessors, (1809), 621 states have call successors, (621), 148 states have call predecessors, (621), 147 states have return successors, (618), 614 states have call predecessors, (618), 618 states have call successors, (618) [2023-11-19 05:12:39,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 3048 transitions. [2023-11-19 05:12:39,616 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 3048 transitions. Word has length 140 [2023-11-19 05:12:39,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:39,620 INFO L495 AbstractCegarLoop]: Abstraction has 2129 states and 3048 transitions. [2023-11-19 05:12:39,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 05:12:39,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 3048 transitions. [2023-11-19 05:12:39,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-19 05:12:39,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:39,645 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:12:39,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:12:39,649 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:12:39,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:39,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1798007856, now seen corresponding path program 1 times [2023-11-19 05:12:39,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:39,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334459952] [2023-11-19 05:12:39,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:39,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:40,750 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2023-11-19 05:12:40,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:40,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334459952] [2023-11-19 05:12:40,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334459952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:40,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:40,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:12:40,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470883049] [2023-11-19 05:12:40,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:40,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:12:40,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:40,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:12:40,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:12:40,757 INFO L87 Difference]: Start difference. First operand 2129 states and 3048 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-19 05:12:46,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:12:48,121 WARN L539 Checker$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 05:12:48,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:48,284 INFO L93 Difference]: Finished difference Result 5147 states and 7343 transitions. [2023-11-19 05:12:48,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:12:48,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 201 [2023-11-19 05:12:48,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:48,312 INFO L225 Difference]: With dead ends: 5147 [2023-11-19 05:12:48,312 INFO L226 Difference]: Without dead ends: 3043 [2023-11-19 05:12:48,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:12:48,324 INFO L413 NwaCegarLoop]: 1364 mSDtfsCounter, 669 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:48,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 2682 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 539 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2023-11-19 05:12:48,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2023-11-19 05:12:48,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 3032. [2023-11-19 05:12:48,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3032 states, 1961 states have (on average 1.3396226415094339) internal successors, (2627), 1991 states have internal predecessors, (2627), 838 states have call successors, (838), 232 states have call predecessors, (838), 231 states have return successors, (835), 822 states have call predecessors, (835), 835 states have call successors, (835) [2023-11-19 05:12:48,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3032 states to 3032 states and 4300 transitions. [2023-11-19 05:12:48,492 INFO L78 Accepts]: Start accepts. Automaton has 3032 states and 4300 transitions. Word has length 201 [2023-11-19 05:12:48,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:48,495 INFO L495 AbstractCegarLoop]: Abstraction has 3032 states and 4300 transitions. [2023-11-19 05:12:48,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-19 05:12:48,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 4300 transitions. [2023-11-19 05:12:48,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-19 05:12:48,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:48,504 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:12:48,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:12:48,504 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:12:48,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:48,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1084102403, now seen corresponding path program 1 times [2023-11-19 05:12:48,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:48,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220313622] [2023-11-19 05:12:48,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:48,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:49,772 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-11-19 05:12:49,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:49,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220313622] [2023-11-19 05:12:49,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220313622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:49,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:49,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:12:49,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866625109] [2023-11-19 05:12:49,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:49,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:12:49,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:49,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:12:49,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:12:49,778 INFO L87 Difference]: Start difference. First operand 3032 states and 4300 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22)