./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a29077-2475-4a77-87aa-37fd342334fc/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a29077-2475-4a77-87aa-37fd342334fc/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a29077-2475-4a77-87aa-37fd342334fc/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a29077-2475-4a77-87aa-37fd342334fc/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a29077-2475-4a77-87aa-37fd342334fc/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a29077-2475-4a77-87aa-37fd342334fc/bin/uautomizer-verify-uTZkv6EMXl --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash be936ec9376452d086f72aa92ac4fe7deb233a068e40e0ed8f478fbc228d19b6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:22:09,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:22:09,393 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a29077-2475-4a77-87aa-37fd342334fc/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-12 02:22:09,399 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:22:09,400 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:22:09,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:22:09,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:22:09,434 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:22:09,435 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:22:09,436 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:22:09,437 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:22:09,440 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:22:09,441 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:22:09,443 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:22:09,444 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:22:09,444 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:22:09,446 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:22:09,449 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:22:09,450 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:22:09,450 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:22:09,451 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:22:09,451 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:22:09,452 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:22:09,452 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:22:09,454 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:22:09,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:22:09,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:22:09,456 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:22:09,456 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:22:09,457 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:22:09,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:22:09,458 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:22:09,459 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:22:09,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:22:09,459 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:22:09,459 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:22:09,460 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d9a29077-2475-4a77-87aa-37fd342334fc/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a29077-2475-4a77-87aa-37fd342334fc/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be936ec9376452d086f72aa92ac4fe7deb233a068e40e0ed8f478fbc228d19b6 [2023-11-12 02:22:09,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:22:09,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:22:09,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:22:09,789 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:22:09,790 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:22:09,791 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a29077-2475-4a77-87aa-37fd342334fc/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2023-11-12 02:22:12,868 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:22:13,482 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:22:13,483 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a29077-2475-4a77-87aa-37fd342334fc/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2023-11-12 02:22:13,539 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a29077-2475-4a77-87aa-37fd342334fc/bin/uautomizer-verify-uTZkv6EMXl/data/ff88f7f85/b1ae8a58fd104b01a85c5f4fa0a16ad8/FLAGe56eb962f [2023-11-12 02:22:13,558 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a29077-2475-4a77-87aa-37fd342334fc/bin/uautomizer-verify-uTZkv6EMXl/data/ff88f7f85/b1ae8a58fd104b01a85c5f4fa0a16ad8 [2023-11-12 02:22:13,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:22:13,568 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:22:13,573 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:13,575 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:22:13,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:22:13,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:13" (1/1) ... [2023-11-12 02:22:13,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d25b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:13, skipping insertion in model container [2023-11-12 02:22:13,583 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:13" (1/1) ... [2023-11-12 02:22:13,711 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:22:14,760 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_d9a29077-2475-4a77-87aa-37fd342334fc/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i[164250,164263] [2023-11-12 02:22:15,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:15,303 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:22:15,499 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"); [5441] [2023-11-12 02:22:15,501 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)); [5448] [2023-11-12 02:22:15,505 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 %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5456-5457] [2023-11-12 02:22:15,510 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; incl %0": "+m" (v->counter)); [5485] [2023-11-12 02:22:15,510 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; decl %0": "+m" (v->counter)); [5492] [2023-11-12 02:22:15,522 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_d9a29077-2475-4a77-87aa-37fd342334fc/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i[164250,164263] [2023-11-12 02:22:15,571 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers--X--defaultlinux-3.12-rc1.tar.xz--X--144_2a--X--cpachecker/linux-3.12-rc1.tar.xz/csd_deg_dscv/6225/dscv_tempdir/dscv/ri/144_2a/drivers/net/can/usb/ems_usb.o.c.prepared"), "i" (546), "i" (12UL)); [6159-6160] [2023-11-12 02:22:15,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:15,746 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:22:15,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:15 WrapperNode [2023-11-12 02:22:15,747 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:15,748 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:15,749 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:22:15,749 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:22:15,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:15" (1/1) ... [2023-11-12 02:22:15,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:15" (1/1) ... [2023-11-12 02:22:15,965 INFO L138 Inliner]: procedures = 169, calls = 760, calls flagged for inlining = 78, calls inlined = 78, statements flattened = 2216 [2023-11-12 02:22:15,966 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:15,967 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:22:15,967 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:22:15,967 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:22:15,977 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:15" (1/1) ... [2023-11-12 02:22:15,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:15" (1/1) ... [2023-11-12 02:22:15,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:15" (1/1) ... [2023-11-12 02:22:15,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:15" (1/1) ... [2023-11-12 02:22:16,144 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:15" (1/1) ... [2023-11-12 02:22:16,165 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:15" (1/1) ... [2023-11-12 02:22:16,198 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:15" (1/1) ... [2023-11-12 02:22:16,225 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:15" (1/1) ... [2023-11-12 02:22:16,266 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:22:16,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:22:16,268 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:22:16,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:22:16,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:15" (1/1) ... [2023-11-12 02:22:16,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:22:16,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a29077-2475-4a77-87aa-37fd342334fc/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:16,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a29077-2475-4a77-87aa-37fd342334fc/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:22:16,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a29077-2475-4a77-87aa-37fd342334fc/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:22:16,352 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-11-12 02:22:16,353 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-11-12 02:22:16,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 02:22:16,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_18 [2023-11-12 02:22:16,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_18 [2023-11-12 02:22:16,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2023-11-12 02:22:16,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2023-11-12 02:22:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2023-11-12 02:22:16,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2023-11-12 02:22:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2023-11-12 02:22:16,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2023-11-12 02:22:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 02:22:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 02:22:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-12 02:22:16,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-12 02:22:16,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:22:16,357 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-12 02:22:16,357 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-12 02:22:16,357 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_read_bulk_callback [2023-11-12 02:22:16,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_read_bulk_callback [2023-11-12 02:22:16,358 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2023-11-12 02:22:16,358 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2023-11-12 02:22:16,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2023-11-12 02:22:16,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2023-11-12 02:22:16,359 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_control_cmd [2023-11-12 02:22:16,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_control_cmd [2023-11-12 02:22:16,359 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-12 02:22:16,360 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-12 02:22:16,360 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-12 02:22:16,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-12 02:22:16,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 02:22:16,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 02:22:16,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2023-11-12 02:22:16,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2023-11-12 02:22:16,362 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-12 02:22:16,362 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-12 02:22:16,362 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2023-11-12 02:22:16,362 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2023-11-12 02:22:16,362 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 02:22:16,363 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 02:22:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2023-11-12 02:22:16,363 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2023-11-12 02:22:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:22:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 02:22:16,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 02:22:16,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 02:22:16,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 02:22:16,364 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:22:16,364 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:22:16,364 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-12 02:22:16,364 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-12 02:22:16,364 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_command_msg [2023-11-12 02:22:16,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_command_msg [2023-11-12 02:22:16,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:22:16,365 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-11-12 02:22:16,365 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-11-12 02:22:16,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2023-11-12 02:22:16,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2023-11-12 02:22:16,365 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2023-11-12 02:22:16,366 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2023-11-12 02:22:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:22:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-12 02:22:16,366 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-12 02:22:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-12 02:22:16,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-12 02:22:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:22:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:22:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_write_mode [2023-11-12 02:22:16,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_write_mode [2023-11-12 02:22:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 02:22:16,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 02:22:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-11-12 02:22:16,370 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-11-12 02:22:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2023-11-12 02:22:16,370 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2023-11-12 02:22:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:22:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_disconnect [2023-11-12 02:22:16,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_disconnect [2023-11-12 02:22:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-11-12 02:22:16,371 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-11-12 02:22:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2023-11-12 02:22:16,372 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2023-11-12 02:22:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_read_interrupt_callback [2023-11-12 02:22:16,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_read_interrupt_callback [2023-11-12 02:22:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2023-11-12 02:22:16,372 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2023-11-12 02:22:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:22:16,373 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2023-11-12 02:22:16,373 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2023-11-12 02:22:16,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 02:22:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_rx_err [2023-11-12 02:22:16,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_rx_err [2023-11-12 02:22:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-12 02:22:16,374 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-12 02:22:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2023-11-12 02:22:16,374 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2023-11-12 02:22:16,375 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-12 02:22:16,375 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-12 02:22:16,375 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2023-11-12 02:22:16,376 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2023-11-12 02:22:16,376 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-12 02:22:16,376 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-12 02:22:16,376 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2023-11-12 02:22:16,376 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2023-11-12 02:22:16,376 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-12 02:22:16,376 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-12 02:22:16,377 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-11-12 02:22:16,377 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-11-12 02:22:16,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2023-11-12 02:22:16,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2023-11-12 02:22:16,377 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2023-11-12 02:22:16,378 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2023-11-12 02:22:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:22:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2023-11-12 02:22:16,379 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2023-11-12 02:22:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 02:22:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-12 02:22:16,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-12 02:22:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:22:16,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:22:16,827 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:22:16,830 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:22:17,051 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-12 02:22:18,086 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2023-11-12 02:22:21,749 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:22:21,764 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:22:21,764 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:22:21,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:22:21 BoogieIcfgContainer [2023-11-12 02:22:21,768 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:22:21,770 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:22:21,770 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:22:21,774 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:22:21,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:22:13" (1/3) ... [2023-11-12 02:22:21,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e91f2ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:22:21, skipping insertion in model container [2023-11-12 02:22:21,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:15" (2/3) ... [2023-11-12 02:22:21,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e91f2ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:22:21, skipping insertion in model container [2023-11-12 02:22:21,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:22:21" (3/3) ... [2023-11-12 02:22:21,777 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2023-11-12 02:22:21,796 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:22:21,796 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:22:21,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:22:21,909 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=PETRI_NET, 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;@fb28593, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:22:21,909 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:22:21,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 763 states, 554 states have (on average 1.355595667870036) internal successors, (751), 578 states have internal predecessors, (751), 157 states have call successors, (157), 52 states have call predecessors, (157), 50 states have return successors, (151), 146 states have call predecessors, (151), 151 states have call successors, (151) [2023-11-12 02:22:21,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-12 02:22:21,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:21,940 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:22:21,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:21,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:21,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1702060277, now seen corresponding path program 1 times [2023-11-12 02:22:21,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:21,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942559987] [2023-11-12 02:22:21,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:21,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:22,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:22:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:22,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:22:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:22,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:22:22,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:22,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942559987] [2023-11-12 02:22:22,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942559987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:22,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:22,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:22:22,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258960383] [2023-11-12 02:22:22,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:22,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:22:22,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:22,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:22:22,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:22:22,850 INFO L87 Difference]: Start difference. First operand has 763 states, 554 states have (on average 1.355595667870036) internal successors, (751), 578 states have internal predecessors, (751), 157 states have call successors, (157), 52 states have call predecessors, (157), 50 states have return successors, (151), 146 states have call predecessors, (151), 151 states have call successors, (151) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:22:27,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:27,924 INFO L93 Difference]: Finished difference Result 2413 states and 3468 transitions. [2023-11-12 02:22:27,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:22:27,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-11-12 02:22:27,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:27,962 INFO L225 Difference]: With dead ends: 2413 [2023-11-12 02:22:27,963 INFO L226 Difference]: Without dead ends: 1631 [2023-11-12 02:22:27,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:22:27,977 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 1468 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:27,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 2057 Invalid, 1239 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [443 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-12 02:22:28,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2023-11-12 02:22:28,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1463. [2023-11-12 02:22:28,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1071 states have (on average 1.315592903828198) internal successors, (1409), 1099 states have internal predecessors, (1409), 293 states have call successors, (293), 99 states have call predecessors, (293), 98 states have return successors, (288), 278 states have call predecessors, (288), 288 states have call successors, (288) [2023-11-12 02:22:28,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 1990 transitions. [2023-11-12 02:22:28,198 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 1990 transitions. Word has length 28 [2023-11-12 02:22:28,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:28,198 INFO L495 AbstractCegarLoop]: Abstraction has 1463 states and 1990 transitions. [2023-11-12 02:22:28,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:22:28,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 1990 transitions. [2023-11-12 02:22:28,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-12 02:22:28,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:28,203 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:22:28,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:22:28,203 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:28,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:28,204 INFO L85 PathProgramCache]: Analyzing trace with hash 897089142, now seen corresponding path program 1 times [2023-11-12 02:22:28,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:28,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669445184] [2023-11-12 02:22:28,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:28,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:28,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:22:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:28,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:22:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:28,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:22:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:28,803 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:22:28,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:28,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669445184] [2023-11-12 02:22:28,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669445184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:28,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:28,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:22:28,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604544428] [2023-11-12 02:22:28,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:28,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:22:28,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:28,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:22:28,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:22:28,808 INFO L87 Difference]: Start difference. First operand 1463 states and 1990 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:22:34,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:22:34,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:34,525 INFO L93 Difference]: Finished difference Result 4710 states and 6617 transitions. [2023-11-12 02:22:34,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:22:34,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2023-11-12 02:22:34,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:34,552 INFO L225 Difference]: With dead ends: 4710 [2023-11-12 02:22:34,553 INFO L226 Difference]: Without dead ends: 3254 [2023-11-12 02:22:34,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:22:34,564 INFO L413 NwaCegarLoop]: 1221 mSDtfsCounter, 1309 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 2551 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:34,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 2551 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-12 02:22:34,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2023-11-12 02:22:34,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3030. [2023-11-12 02:22:34,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 2220 states have (on average 1.3153153153153154) internal successors, (2920), 2284 states have internal predecessors, (2920), 599 states have call successors, (599), 197 states have call predecessors, (599), 210 states have return successors, (670), 582 states have call predecessors, (670), 594 states have call successors, (670) [2023-11-12 02:22:34,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 4189 transitions. [2023-11-12 02:22:34,805 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 4189 transitions. Word has length 38 [2023-11-12 02:22:34,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:34,806 INFO L495 AbstractCegarLoop]: Abstraction has 3030 states and 4189 transitions. [2023-11-12 02:22:34,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:22:34,807 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 4189 transitions. [2023-11-12 02:22:34,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-12 02:22:34,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:34,815 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:22:34,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:22:34,815 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:34,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:34,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2039610075, now seen corresponding path program 1 times [2023-11-12 02:22:34,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:34,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604887401] [2023-11-12 02:22:34,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:34,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:35,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:22:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:35,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:22:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:35,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:22:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:22:35,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:35,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604887401] [2023-11-12 02:22:35,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604887401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:35,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:35,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:22:35,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334725992] [2023-11-12 02:22:35,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:35,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:22:35,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:35,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:22:35,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:22:35,366 INFO L87 Difference]: Start difference. First operand 3030 states and 4189 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:22:38,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:38,573 INFO L93 Difference]: Finished difference Result 3246 states and 4550 transitions. [2023-11-12 02:22:38,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:22:38,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2023-11-12 02:22:38,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:38,599 INFO L225 Difference]: With dead ends: 3246 [2023-11-12 02:22:38,599 INFO L226 Difference]: Without dead ends: 3243 [2023-11-12 02:22:38,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:22:38,603 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 1195 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:38,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 1236 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-12 02:22:38,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2023-11-12 02:22:38,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 3029. [2023-11-12 02:22:38,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3029 states, 2220 states have (on average 1.3148648648648649) internal successors, (2919), 2283 states have internal predecessors, (2919), 598 states have call successors, (598), 197 states have call predecessors, (598), 210 states have return successors, (670), 582 states have call predecessors, (670), 594 states have call successors, (670) [2023-11-12 02:22:38,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3029 states to 3029 states and 4187 transitions. [2023-11-12 02:22:38,826 INFO L78 Accepts]: Start accepts. Automaton has 3029 states and 4187 transitions. Word has length 39 [2023-11-12 02:22:38,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:38,827 INFO L495 AbstractCegarLoop]: Abstraction has 3029 states and 4187 transitions. [2023-11-12 02:22:38,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:22:38,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3029 states and 4187 transitions. [2023-11-12 02:22:38,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-12 02:22:38,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:38,831 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:22:38,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:22:38,832 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:38,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:38,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1196941799, now seen corresponding path program 1 times [2023-11-12 02:22:38,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:38,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254135310] [2023-11-12 02:22:38,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:38,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:39,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:22:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:39,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:22:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:39,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:22:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:22:39,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:39,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254135310] [2023-11-12 02:22:39,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254135310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:39,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:39,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:22:39,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235953679] [2023-11-12 02:22:39,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:39,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:22:39,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:39,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:22:39,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:22:39,211 INFO L87 Difference]: Start difference. First operand 3029 states and 4187 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:22:43,479 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 02:22:43,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:43,498 INFO L93 Difference]: Finished difference Result 3245 states and 4548 transitions. [2023-11-12 02:22:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:22:43,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2023-11-12 02:22:43,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:43,525 INFO L225 Difference]: With dead ends: 3245 [2023-11-12 02:22:43,525 INFO L226 Difference]: Without dead ends: 3242 [2023-11-12 02:22:43,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:22:43,529 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 1191 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 276 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:43,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 1232 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 458 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2023-11-12 02:22:43,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3242 states. [2023-11-12 02:22:43,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3242 to 3028. [2023-11-12 02:22:43,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 2220 states have (on average 1.3144144144144143) internal successors, (2918), 2282 states have internal predecessors, (2918), 597 states have call successors, (597), 197 states have call predecessors, (597), 210 states have return successors, (670), 582 states have call predecessors, (670), 594 states have call successors, (670) [2023-11-12 02:22:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 4185 transitions. [2023-11-12 02:22:43,740 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 4185 transitions. Word has length 40 [2023-11-12 02:22:43,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:43,741 INFO L495 AbstractCegarLoop]: Abstraction has 3028 states and 4185 transitions. [2023-11-12 02:22:43,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:22:43,741 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 4185 transitions. [2023-11-12 02:22:43,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-12 02:22:43,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:43,743 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:22:43,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:22:43,743 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:43,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:43,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1549170078, now seen corresponding path program 1 times [2023-11-12 02:22:43,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:43,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59452568] [2023-11-12 02:22:43,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:43,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:43,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:22:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:44,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:22:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:44,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:22:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:44,034 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:22:44,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:44,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59452568] [2023-11-12 02:22:44,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59452568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:44,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:44,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:22:44,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728883407] [2023-11-12 02:22:44,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:44,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:22:44,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:44,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:22:44,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:22:44,037 INFO L87 Difference]: Start difference. First operand 3028 states and 4185 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:22:47,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:47,142 INFO L93 Difference]: Finished difference Result 3244 states and 4546 transitions. [2023-11-12 02:22:47,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:22:47,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2023-11-12 02:22:47,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:47,168 INFO L225 Difference]: With dead ends: 3244 [2023-11-12 02:22:47,168 INFO L226 Difference]: Without dead ends: 3241 [2023-11-12 02:22:47,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:22:47,172 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 1196 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:47,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1286 Valid, 1219 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-12 02:22:47,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3241 states. [2023-11-12 02:22:47,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3241 to 3027. [2023-11-12 02:22:47,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3027 states, 2220 states have (on average 1.313963963963964) internal successors, (2917), 2281 states have internal predecessors, (2917), 596 states have call successors, (596), 197 states have call predecessors, (596), 210 states have return successors, (670), 582 states have call predecessors, (670), 594 states have call successors, (670) [2023-11-12 02:22:47,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3027 states to 3027 states and 4183 transitions. [2023-11-12 02:22:47,412 INFO L78 Accepts]: Start accepts. Automaton has 3027 states and 4183 transitions. Word has length 41 [2023-11-12 02:22:47,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:47,412 INFO L495 AbstractCegarLoop]: Abstraction has 3027 states and 4183 transitions. [2023-11-12 02:22:47,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:22:47,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3027 states and 4183 transitions. [2023-11-12 02:22:47,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-12 02:22:47,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:47,416 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:22:47,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:22:47,417 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:47,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:47,417 INFO L85 PathProgramCache]: Analyzing trace with hash 779297212, now seen corresponding path program 1 times [2023-11-12 02:22:47,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:47,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947440212] [2023-11-12 02:22:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:47,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:47,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:22:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:47,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:22:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:47,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:22:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:47,681 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:22:47,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:47,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947440212] [2023-11-12 02:22:47,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947440212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:47,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:47,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:22:47,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145836768] [2023-11-12 02:22:47,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:47,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:22:47,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:47,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:22:47,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:22:47,686 INFO L87 Difference]: Start difference. First operand 3027 states and 4183 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:22:52,015 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 02:22:52,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:52,035 INFO L93 Difference]: Finished difference Result 3243 states and 4544 transitions. [2023-11-12 02:22:52,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:22:52,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2023-11-12 02:22:52,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:52,063 INFO L225 Difference]: With dead ends: 3243 [2023-11-12 02:22:52,063 INFO L226 Difference]: Without dead ends: 3231 [2023-11-12 02:22:52,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:22:52,066 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 1185 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 273 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:52,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1276 Valid, 1229 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 456 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-11-12 02:22:52,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2023-11-12 02:22:52,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3017. [2023-11-12 02:22:52,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3017 states, 2211 states have (on average 1.3134328358208955) internal successors, (2904), 2271 states have internal predecessors, (2904), 595 states have call successors, (595), 197 states have call predecessors, (595), 210 states have return successors, (670), 582 states have call predecessors, (670), 594 states have call successors, (670) [2023-11-12 02:22:52,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 4169 transitions. [2023-11-12 02:22:52,293 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 4169 transitions. Word has length 42 [2023-11-12 02:22:52,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:52,295 INFO L495 AbstractCegarLoop]: Abstraction has 3017 states and 4169 transitions. [2023-11-12 02:22:52,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:22:52,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 4169 transitions. [2023-11-12 02:22:52,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 02:22:52,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:52,304 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:52,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:22:52,305 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:52,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:52,305 INFO L85 PathProgramCache]: Analyzing trace with hash -6086935, now seen corresponding path program 1 times [2023-11-12 02:22:52,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:52,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507170250] [2023-11-12 02:22:52,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:52,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:52,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:22:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:52,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:22:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:52,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:22:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:52,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:22:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:52,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:22:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:52,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-12 02:22:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:52,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-12 02:22:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:52,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-12 02:22:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:52,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:22:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:22:52,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:52,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507170250] [2023-11-12 02:22:52,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507170250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:52,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:52,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:22:52,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488096304] [2023-11-12 02:22:52,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:52,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:22:52,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:52,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:22:52,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:22:52,698 INFO L87 Difference]: Start difference. First operand 3017 states and 4169 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-12 02:22:55,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:55,155 INFO L93 Difference]: Finished difference Result 7292 states and 10057 transitions. [2023-11-12 02:22:55,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:22:55,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2023-11-12 02:22:55,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:55,189 INFO L225 Difference]: With dead ends: 7292 [2023-11-12 02:22:55,189 INFO L226 Difference]: Without dead ends: 4282 [2023-11-12 02:22:55,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:22:55,201 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 1272 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:55,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 2069 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-12 02:22:55,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4282 states. [2023-11-12 02:22:55,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4282 to 3882. [2023-11-12 02:22:55,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 2844 states have (on average 1.2932489451476794) internal successors, (3678), 2910 states have internal predecessors, (3678), 734 states have call successors, (734), 276 states have call predecessors, (734), 303 states have return successors, (847), 727 states have call predecessors, (847), 733 states have call successors, (847) [2023-11-12 02:22:55,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5259 transitions. [2023-11-12 02:22:55,521 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5259 transitions. Word has length 90 [2023-11-12 02:22:55,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:55,522 INFO L495 AbstractCegarLoop]: Abstraction has 3882 states and 5259 transitions. [2023-11-12 02:22:55,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-12 02:22:55,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5259 transitions. [2023-11-12 02:22:55,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-12 02:22:55,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:55,528 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:55,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:22:55,529 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:55,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:55,529 INFO L85 PathProgramCache]: Analyzing trace with hash 889145190, now seen corresponding path program 1 times [2023-11-12 02:22:55,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:55,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282099636] [2023-11-12 02:22:55,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:55,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:55,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:22:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:55,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:22:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:55,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:22:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:55,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:22:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:55,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-12 02:22:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:55,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-12 02:22:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:55,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:22:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:55,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-12 02:22:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:55,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-12 02:22:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:55,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-12 02:22:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-12 02:22:56,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:56,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282099636] [2023-11-12 02:22:56,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282099636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:56,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:56,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:22:56,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182957378] [2023-11-12 02:22:56,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:56,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:22:56,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:56,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:22:56,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:22:56,008 INFO L87 Difference]: Start difference. First operand 3882 states and 5259 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-12 02:22:58,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:58,930 INFO L93 Difference]: Finished difference Result 9094 states and 12351 transitions. [2023-11-12 02:22:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:22:58,931 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 106 [2023-11-12 02:22:58,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:58,974 INFO L225 Difference]: With dead ends: 9094 [2023-11-12 02:22:58,975 INFO L226 Difference]: Without dead ends: 5226 [2023-11-12 02:22:58,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:22:58,988 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 1135 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:58,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 2283 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [659 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-12 02:22:58,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2023-11-12 02:22:59,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 4768. [2023-11-12 02:22:59,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4768 states, 3506 states have (on average 1.2823730747290358) internal successors, (4496), 3578 states have internal predecessors, (4496), 872 states have call successors, (872), 354 states have call predecessors, (872), 389 states have return successors, (1005), 867 states have call predecessors, (1005), 871 states have call successors, (1005) [2023-11-12 02:22:59,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 6373 transitions. [2023-11-12 02:22:59,424 INFO L78 Accepts]: Start accepts. Automaton has 4768 states and 6373 transitions. Word has length 106 [2023-11-12 02:22:59,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:59,424 INFO L495 AbstractCegarLoop]: Abstraction has 4768 states and 6373 transitions. [2023-11-12 02:22:59,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-12 02:22:59,425 INFO L276 IsEmpty]: Start isEmpty. Operand 4768 states and 6373 transitions. [2023-11-12 02:22:59,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-12 02:22:59,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:59,435 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:59,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:22:59,436 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:59,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:59,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1858388635, now seen corresponding path program 1 times [2023-11-12 02:22:59,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:59,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742221565] [2023-11-12 02:22:59,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:59,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat