./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d48501-17d4-4015-b0a7-ca7dd920f97d/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d48501-17d4-4015-b0a7-ca7dd920f97d/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d48501-17d4-4015-b0a7-ca7dd920f97d/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d48501-17d4-4015-b0a7-ca7dd920f97d/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d48501-17d4-4015-b0a7-ca7dd920f97d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d48501-17d4-4015-b0a7-ca7dd920f97d/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:09:08,362 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:09:08,475 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d48501-17d4-4015-b0a7-ca7dd920f97d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:09:08,484 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:09:08,484 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:09:08,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:09:08,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:09:08,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:09:08,507 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:09:08,508 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:09:08,508 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:09:08,509 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:09:08,509 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:09:08,510 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:09:08,510 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:09:08,511 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:09:08,511 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:09:08,512 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:09:08,512 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:09:08,513 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:09:08,513 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:09:08,514 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:09:08,514 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:09:08,515 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:09:08,515 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:09:08,516 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:09:08,516 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:09:08,516 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:09:08,517 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:09:08,517 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:09:08,517 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:09:08,518 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:09:08,518 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:09:08,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:09:08,519 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:09:08,519 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:09:08,519 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:09:08,519 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:09:08,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:09:08,520 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:09:08,520 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:09:08,520 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:09:08,521 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_85d48501-17d4-4015-b0a7-ca7dd920f97d/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d48501-17d4-4015-b0a7-ca7dd920f97d/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a [2023-11-12 00:09:08,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:09:08,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:09:08,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:09:08,831 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:09:08,832 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:09:08,833 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d48501-17d4-4015-b0a7-ca7dd920f97d/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2023-11-12 00:09:11,901 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:09:12,528 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:09:12,531 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d48501-17d4-4015-b0a7-ca7dd920f97d/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2023-11-12 00:09:12,593 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d48501-17d4-4015-b0a7-ca7dd920f97d/bin/utaipan-verify-NcY6lQBIFX/data/d17f0b75c/b71db8e27efc47f9b328e8f2e01ab84b/FLAGca7dc2288 [2023-11-12 00:09:12,612 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d48501-17d4-4015-b0a7-ca7dd920f97d/bin/utaipan-verify-NcY6lQBIFX/data/d17f0b75c/b71db8e27efc47f9b328e8f2e01ab84b [2023-11-12 00:09:12,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:09:12,622 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:09:12,626 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:09:12,626 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:09:12,634 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:09:12,635 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:09:12" (1/1) ... [2023-11-12 00:09:12,636 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f46fd60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:12, skipping insertion in model container [2023-11-12 00:09:12,636 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:09:12" (1/1) ... [2023-11-12 00:09:12,826 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:09:14,507 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_85d48501-17d4-4015-b0a7-ca7dd920f97d/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2023-11-12 00:09:14,614 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:09:14,677 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:09:14,790 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n" ".balign 4\n" ".long 671f - .\n" ".previous\n" "671:" "\n\tlock; " "bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [4831-4837] [2023-11-12 00:09:14,792 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n" ".balign 4\n" ".long 671f - .\n" ".previous\n" "671:" "\n\tlock; " "btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [4844-4850] [2023-11-12 00:09:14,794 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n" ".balign 4\n" ".long 671f - .\n" ".previous\n" "671:" "\n\tlock; " "btr %2,%1\n\t" "sbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [4857-4864] [2023-11-12 00:09:14,797 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n" ".balign 4\n" ".long 671f - .\n" ".previous\n" "671:" "\n\tlock; " "incl %0": "+m" (v->counter)); [4894-4900] [2023-11-12 00:09:14,798 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n" ".balign 4\n" ".long 671f - .\n" ".previous\n" "671:" "\n\tlock; " "decl %0": "+m" (v->counter)); [4907-4913] [2023-11-12 00:09:14,883 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n" ".pushsection __bug_table,\"a\"\n" "2:\t.long 1b - 2b, %c0 - 2b\n" "\t.word %c1, 0\n" "\t.org 2b+%c2\n" ".popsection": : "i" ("/anthill/stuff/tacas-comp/work/current--X--drivers/net/can/usb/ems_usb.ko--X--bulklinux-3.0.1--X--68_1/linux-3.0.1/csd_deg_dscv/11/dscv_tempdir/dscv/ri/68_1/drivers/net/can/usb/ems_usb.c.common.c"), "i" (510), "i" (sizeof(struct bug_entry ))); [5717-5723] [2023-11-12 00:09:15,034 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_85d48501-17d4-4015-b0a7-ca7dd920f97d/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2023-11-12 00:09:15,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:09:15,302 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:09:15,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:15 WrapperNode [2023-11-12 00:09:15,303 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:09:15,304 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:09:15,305 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:09:15,305 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:09:15,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:15" (1/1) ... [2023-11-12 00:09:15,387 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:15" (1/1) ... [2023-11-12 00:09:15,458 INFO L138 Inliner]: procedures = 133, calls = 778, calls flagged for inlining = 54, calls inlined = 44, statements flattened = 1512 [2023-11-12 00:09:15,459 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:09:15,459 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:09:15,459 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:09:15,460 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:09:15,469 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:15" (1/1) ... [2023-11-12 00:09:15,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:15" (1/1) ... [2023-11-12 00:09:15,479 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:15" (1/1) ... [2023-11-12 00:09:15,480 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:15" (1/1) ... [2023-11-12 00:09:15,570 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:15" (1/1) ... [2023-11-12 00:09:15,582 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:15" (1/1) ... [2023-11-12 00:09:15,592 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:15" (1/1) ... [2023-11-12 00:09:15,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:15" (1/1) ... [2023-11-12 00:09:15,620 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:09:15,621 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:09:15,621 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:09:15,621 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:09:15,622 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:15" (1/1) ... [2023-11-12 00:09:15,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:09:15,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d48501-17d4-4015-b0a7-ca7dd920f97d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:09:15,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d48501-17d4-4015-b0a7-ca7dd920f97d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:09:15,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d48501-17d4-4015-b0a7-ca7dd920f97d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:09:15,727 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-11-12 00:09:15,728 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-11-12 00:09:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_init [2023-11-12 00:09:15,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_init [2023-11-12 00:09:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:09:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-12 00:09:15,729 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-12 00:09:15,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 00:09:15,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 00:09:15,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:09:15,729 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-12 00:09:15,729 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-12 00:09:15,730 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_control_cmd [2023-11-12 00:09:15,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_control_cmd [2023-11-12 00:09:15,730 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-12 00:09:15,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-12 00:09:15,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 00:09:15,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 00:09:15,732 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_exit [2023-11-12 00:09:15,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_exit [2023-11-12 00:09:15,732 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2023-11-12 00:09:15,733 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2023-11-12 00:09:15,733 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 00:09:15,733 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 00:09:15,734 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2023-11-12 00:09:15,734 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2023-11-12 00:09:15,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:09:15,735 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-12 00:09:15,735 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-12 00:09:15,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2023-11-12 00:09:15,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2023-11-12 00:09:15,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-12 00:09:15,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-12 00:09:15,736 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-12 00:09:15,736 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-12 00:09:15,737 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_command_msg [2023-11-12 00:09:15,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_command_msg [2023-11-12 00:09:15,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:09:15,737 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2023-11-12 00:09:15,737 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2023-11-12 00:09:15,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:09:15,737 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-12 00:09:15,738 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-12 00:09:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:09:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:09:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_write_mode [2023-11-12 00:09:15,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_write_mode [2023-11-12 00:09:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-11-12 00:09:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-11-12 00:09:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2023-11-12 00:09:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2023-11-12 00:09:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:09:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-11-12 00:09:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-11-12 00:09:15,740 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-12 00:09:15,740 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-12 00:09:15,740 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2023-11-12 00:09:15,741 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2023-11-12 00:09:15,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2023-11-12 00:09:15,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2023-11-12 00:09:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:09:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:09:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 00:09:15,743 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 00:09:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-12 00:09:15,743 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-12 00:09:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-12 00:09:15,743 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-12 00:09:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2023-11-12 00:09:15,744 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2023-11-12 00:09:15,744 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-12 00:09:15,744 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-12 00:09:15,744 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2023-11-12 00:09:15,745 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2023-11-12 00:09:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-12 00:09:15,745 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-12 00:09:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-12 00:09:15,745 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-12 00:09:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2023-11-12 00:09:15,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2023-11-12 00:09:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2023-11-12 00:09:15,746 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2023-11-12 00:09:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-12 00:09:15,747 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-12 00:09:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:09:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2023-11-12 00:09:15,747 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2023-11-12 00:09:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-12 00:09:15,747 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-12 00:09:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 00:09:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:09:15,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:09:16,154 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:09:16,157 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:09:16,637 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2023-11-12 00:09:16,836 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 00:09:19,030 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2023-11-12 00:09:19,030 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2023-11-12 00:09:19,094 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:09:19,639 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:09:19,640 INFO L302 CfgBuilder]: Removed 13 assume(true) statements. [2023-11-12 00:09:19,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:09:19 BoogieIcfgContainer [2023-11-12 00:09:19,646 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:09:19,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:09:19,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:09:19,652 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:09:19,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:09:12" (1/3) ... [2023-11-12 00:09:19,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fbaf9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:09:19, skipping insertion in model container [2023-11-12 00:09:19,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:15" (2/3) ... [2023-11-12 00:09:19,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fbaf9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:09:19, skipping insertion in model container [2023-11-12 00:09:19,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:09:19" (3/3) ... [2023-11-12 00:09:19,656 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2023-11-12 00:09:19,676 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:09:19,676 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:09:19,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:09:19,781 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;@78138d00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:09:19,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:09:19,787 INFO L276 IsEmpty]: Start isEmpty. Operand has 382 states, 231 states have (on average 1.3463203463203464) internal successors, (311), 243 states have internal predecessors, (311), 112 states have call successors, (112), 38 states have call predecessors, (112), 37 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2023-11-12 00:09:19,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 00:09:19,795 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:19,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:19,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:09:19,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:19,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1021538595, now seen corresponding path program 1 times [2023-11-12 00:09:19,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:19,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697593602] [2023-11-12 00:09:19,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:19,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:09:21,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:21,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697593602] [2023-11-12 00:09:21,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697593602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:21,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:21,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:09:21,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718841342] [2023-11-12 00:09:21,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:21,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:09:21,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:21,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:09:21,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:09:21,584 INFO L87 Difference]: Start difference. First operand has 382 states, 231 states have (on average 1.3463203463203464) internal successors, (311), 243 states have internal predecessors, (311), 112 states have call successors, (112), 38 states have call predecessors, (112), 37 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 00:09:22,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:09:27,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:09:28,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:28,808 INFO L93 Difference]: Finished difference Result 761 states and 1081 transitions. [2023-11-12 00:09:28,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:09:28,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-12 00:09:28,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:28,827 INFO L225 Difference]: With dead ends: 761 [2023-11-12 00:09:28,827 INFO L226 Difference]: Without dead ends: 385 [2023-11-12 00:09:28,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:09:28,837 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 209 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:28,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1521 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-11-12 00:09:28,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-11-12 00:09:28,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 380. [2023-11-12 00:09:28,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 232 states have (on average 1.2844827586206897) internal successors, (298), 240 states have internal predecessors, (298), 110 states have call successors, (110), 37 states have call predecessors, (110), 37 states have return successors, (107), 105 states have call predecessors, (107), 106 states have call successors, (107) [2023-11-12 00:09:28,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 515 transitions. [2023-11-12 00:09:28,926 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 515 transitions. Word has length 16 [2023-11-12 00:09:28,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:28,928 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 515 transitions. [2023-11-12 00:09:28,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 00:09:28,928 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 515 transitions. [2023-11-12 00:09:28,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 00:09:28,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:28,930 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:28,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:09:28,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:09:28,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1962712684, now seen corresponding path program 1 times [2023-11-12 00:09:28,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:28,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545735273] [2023-11-12 00:09:28,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:28,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:30,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:09:30,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:30,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545735273] [2023-11-12 00:09:30,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545735273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:30,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:30,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:09:30,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608156868] [2023-11-12 00:09:30,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:30,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:09:30,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:30,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:09:30,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:09:30,219 INFO L87 Difference]: Start difference. First operand 380 states and 515 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 00:09:34,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:09:36,474 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 [] [2023-11-12 00:09:36,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:36,512 INFO L93 Difference]: Finished difference Result 958 states and 1295 transitions. [2023-11-12 00:09:36,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:09:36,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-11-12 00:09:36,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:36,520 INFO L225 Difference]: With dead ends: 958 [2023-11-12 00:09:36,520 INFO L226 Difference]: Without dead ends: 594 [2023-11-12 00:09:36,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:09:36,523 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 291 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:36,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 883 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2023-11-12 00:09:36,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2023-11-12 00:09:36,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 590. [2023-11-12 00:09:36,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 361 states have (on average 1.293628808864266) internal successors, (467), 372 states have internal predecessors, (467), 165 states have call successors, (165), 64 states have call predecessors, (165), 63 states have return successors, (162), 156 states have call predecessors, (162), 161 states have call successors, (162) [2023-11-12 00:09:36,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 794 transitions. [2023-11-12 00:09:36,591 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 794 transitions. Word has length 20 [2023-11-12 00:09:36,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:36,592 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 794 transitions. [2023-11-12 00:09:36,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 00:09:36,592 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 794 transitions. [2023-11-12 00:09:36,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-12 00:09:36,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:36,594 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:36,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:09:36,594 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:09:36,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:36,595 INFO L85 PathProgramCache]: Analyzing trace with hash 714288395, now seen corresponding path program 1 times [2023-11-12 00:09:36,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:36,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184366382] [2023-11-12 00:09:36,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:36,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:37,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:09:37,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:37,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184366382] [2023-11-12 00:09:37,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184366382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:37,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:37,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:09:37,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829001786] [2023-11-12 00:09:37,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:37,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:09:37,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:37,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:09:37,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:09:37,717 INFO L87 Difference]: Start difference. First operand 590 states and 794 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 00:09:41,990 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 [] [2023-11-12 00:09:43,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:43,670 INFO L93 Difference]: Finished difference Result 869 states and 1166 transitions. [2023-11-12 00:09:43,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:09:43,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2023-11-12 00:09:43,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:43,680 INFO L225 Difference]: With dead ends: 869 [2023-11-12 00:09:43,680 INFO L226 Difference]: Without dead ends: 860 [2023-11-12 00:09:43,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:09:43,682 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 376 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:43,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 880 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2023-11-12 00:09:43,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2023-11-12 00:09:43,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 851. [2023-11-12 00:09:43,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 521 states have (on average 1.2859884836852207) internal successors, (670), 533 states have internal predecessors, (670), 239 states have call successors, (239), 93 states have call predecessors, (239), 90 states have return successors, (235), 226 states have call predecessors, (235), 235 states have call successors, (235) [2023-11-12 00:09:43,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1144 transitions. [2023-11-12 00:09:43,762 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1144 transitions. Word has length 21 [2023-11-12 00:09:43,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:43,763 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1144 transitions. [2023-11-12 00:09:43,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 00:09:43,763 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1144 transitions. [2023-11-12 00:09:43,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-12 00:09:43,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:43,768 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:43,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:09:43,769 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:09:43,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:43,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1423059930, now seen corresponding path program 1 times [2023-11-12 00:09:43,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:43,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472355567] [2023-11-12 00:09:43,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:43,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:44,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:09:44,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:44,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472355567] [2023-11-12 00:09:44,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472355567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:44,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:44,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:09:44,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141404824] [2023-11-12 00:09:44,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:44,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:09:44,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:44,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:09:44,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:09:44,780 INFO L87 Difference]: Start difference. First operand 851 states and 1144 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-12 00:09:48,868 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 [] [2023-11-12 00:09:48,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:48,911 INFO L93 Difference]: Finished difference Result 2073 states and 2891 transitions. [2023-11-12 00:09:48,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:09:48,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 58 [2023-11-12 00:09:48,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:48,922 INFO L225 Difference]: With dead ends: 2073 [2023-11-12 00:09:48,922 INFO L226 Difference]: Without dead ends: 1233 [2023-11-12 00:09:48,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:09:48,927 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 187 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:48,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 915 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 149 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2023-11-12 00:09:48,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2023-11-12 00:09:49,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1224. [2023-11-12 00:09:49,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 766 states have (on average 1.318537859007833) internal successors, (1010), 786 states have internal predecessors, (1010), 367 states have call successors, (367), 93 states have call predecessors, (367), 90 states have return successors, (363), 348 states have call predecessors, (363), 363 states have call successors, (363) [2023-11-12 00:09:49,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1740 transitions. [2023-11-12 00:09:49,019 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1740 transitions. Word has length 58 [2023-11-12 00:09:49,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:49,020 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 1740 transitions. [2023-11-12 00:09:49,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-12 00:09:49,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1740 transitions. [2023-11-12 00:09:49,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-12 00:09:49,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:49,025 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:49,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:09:49,026 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:09:49,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:49,026 INFO L85 PathProgramCache]: Analyzing trace with hash -732497447, now seen corresponding path program 1 times [2023-11-12 00:09:49,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:49,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324920031] [2023-11-12 00:09:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:49,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:50,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:09:50,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:50,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324920031] [2023-11-12 00:09:50,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324920031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:50,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:50,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:09:50,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996892313] [2023-11-12 00:09:50,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:50,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:09:50,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:50,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:09:50,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:09:50,927 INFO L87 Difference]: Start difference. First operand 1224 states and 1740 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-12 00:09:57,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:09:59,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:10:01,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:10:03,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:10:05,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:10:05,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:05,361 INFO L93 Difference]: Finished difference Result 2472 states and 3526 transitions. [2023-11-12 00:10:05,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:10:05,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 57 [2023-11-12 00:10:05,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:05,374 INFO L225 Difference]: With dead ends: 2472 [2023-11-12 00:10:05,374 INFO L226 Difference]: Without dead ends: 1552 [2023-11-12 00:10:05,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:10:05,379 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 1107 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 666 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 666 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:05,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 1076 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [666 Valid, 692 Invalid, 3 Unknown, 0 Unchecked, 14.2s Time] [2023-11-12 00:10:05,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2023-11-12 00:10:05,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1535. [2023-11-12 00:10:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 963 states have (on average 1.3177570093457944) internal successors, (1269), 986 states have internal predecessors, (1269), 455 states have call successors, (455), 120 states have call predecessors, (455), 116 states have return successors, (451), 432 states have call predecessors, (451), 451 states have call successors, (451) [2023-11-12 00:10:05,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2175 transitions. [2023-11-12 00:10:05,504 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2175 transitions. Word has length 57 [2023-11-12 00:10:05,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:05,506 INFO L495 AbstractCegarLoop]: Abstraction has 1535 states and 2175 transitions. [2023-11-12 00:10:05,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-12 00:10:05,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2175 transitions. [2023-11-12 00:10:05,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-12 00:10:05,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:05,512 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 00:10:05,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:10:05,513 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:10:05,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:05,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1611322577, now seen corresponding path program 1 times [2023-11-12 00:10:05,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:05,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233593151] [2023-11-12 00:10:05,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:05,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:07,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 00:10:07,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:07,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233593151] [2023-11-12 00:10:07,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233593151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:07,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:07,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 00:10:07,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107504080] [2023-11-12 00:10:07,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:07,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states