./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--tm6000--tm6000.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55da911-4834-4232-bb4b-40a2c9b6c050/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55da911-4834-4232-bb4b-40a2c9b6c050/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55da911-4834-4232-bb4b-40a2c9b6c050/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55da911-4834-4232-bb4b-40a2c9b6c050/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--tm6000--tm6000.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55da911-4834-4232-bb4b-40a2c9b6c050/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55da911-4834-4232-bb4b-40a2c9b6c050/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b9887a5e62ba7796177701dd580b435b651a2269b3bc91f58378bbd7cb01745d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:11:42,966 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:11:43,028 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55da911-4834-4232-bb4b-40a2c9b6c050/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 16:11:43,034 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:11:43,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:11:43,055 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:11:43,056 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:11:43,056 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:11:43,057 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:11:43,057 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:11:43,058 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:11:43,059 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:11:43,059 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:11:43,060 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:11:43,060 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:11:43,061 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:11:43,061 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:11:43,062 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:11:43,062 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:11:43,063 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:11:43,063 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:11:43,064 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:11:43,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:11:43,065 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:11:43,065 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:11:43,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:11:43,066 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:11:43,066 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:11:43,067 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:11:43,067 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:11:43,067 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:11:43,068 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:11:43,068 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:11:43,068 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:11:43,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:11:43,069 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:11:43,069 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:11:43,069 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:11:43,069 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:11:43,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:11:43,070 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:11:43,070 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:11:43,070 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:11:43,070 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:11:43,071 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55da911-4834-4232-bb4b-40a2c9b6c050/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55da911-4834-4232-bb4b-40a2c9b6c050/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9887a5e62ba7796177701dd580b435b651a2269b3bc91f58378bbd7cb01745d [2023-12-02 16:11:43,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:11:43,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:11:43,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:11:43,308 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:11:43,308 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:11:43,310 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55da911-4834-4232-bb4b-40a2c9b6c050/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--tm6000--tm6000.ko-entry_point.cil.out.i [2023-12-02 16:11:45,991 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:11:46,534 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:11:46,534 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55da911-4834-4232-bb4b-40a2c9b6c050/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--tm6000--tm6000.ko-entry_point.cil.out.i [2023-12-02 16:11:46,585 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55da911-4834-4232-bb4b-40a2c9b6c050/bin/utaipan-verify-nQ1chXbOIh/data/f85d05147/868ec6e3a73a4878978a3605ed918128/FLAGc4d3166b1 [2023-12-02 16:11:46,599 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55da911-4834-4232-bb4b-40a2c9b6c050/bin/utaipan-verify-nQ1chXbOIh/data/f85d05147/868ec6e3a73a4878978a3605ed918128 [2023-12-02 16:11:46,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:11:46,603 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:11:46,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:11:46,604 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:11:46,609 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:11:46,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:11:46" (1/1) ... [2023-12-02 16:11:46,611 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a8c33c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:11:46, skipping insertion in model container [2023-12-02 16:11:46,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:11:46" (1/1) ... [2023-12-02 16:11:46,872 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:11:47,283 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4386] [2023-12-02 16:11:50,422 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_d55da911-4834-4232-bb4b-40a2c9b6c050/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--tm6000--tm6000.ko-entry_point.cil.out.i[483771,483784] [2023-12-02 16:11:50,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:11:51,071 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:11:51,140 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4386] [2023-12-02 16:11:51,163 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"); [6361] [2023-12-02 16:11:51,165 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)); [6368] [2023-12-02 16:11:51,344 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%1,%0": "=q" (pfo_ret__): "m" (__preempt_count)); [10358] [2023-12-02 16:11:51,344 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [10361] [2023-12-02 16:11:51,344 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [10364] [2023-12-02 16:11:51,345 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [10367] [2023-12-02 16:11:51,395 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-4.2-rc1.tar.xz--X--32_7a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/3697/dscv_tempdir/dscv/ri/32_7a/drivers/media/usb/tm6000/tm6000-video.c"), "i" (717), "i" (12UL)); [11384-11385] [2023-12-02 16:11:51,396 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-4.2-rc1.tar.xz--X--32_7a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/3697/dscv_tempdir/dscv/ri/32_7a/drivers/media/usb/tm6000/tm6000-video.c"), "i" (746), "i" (12UL)); [11420-11421] [2023-12-02 16:11:51,716 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_d55da911-4834-4232-bb4b-40a2c9b6c050/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--tm6000--tm6000.ko-entry_point.cil.out.i[483771,483784] [2023-12-02 16:11:51,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:11:52,020 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:11:52,020 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:11:52,028 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:11:52,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:11:52 WrapperNode [2023-12-02 16:11:52,028 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:11:52,029 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:11:52,030 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:11:52,030 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:11:52,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:11:52" (1/1) ... [2023-12-02 16:11:52,212 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:11:52" (1/1) ... [2023-12-02 16:11:53,100 INFO L138 Inliner]: procedures = 582, calls = 8197, calls flagged for inlining = 208, calls inlined = 182, statements flattened = 14586 [2023-12-02 16:11:53,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:11:53,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:11:53,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:11:53,102 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:11:53,112 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:11:52" (1/1) ... [2023-12-02 16:11:53,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:11:52" (1/1) ... [2023-12-02 16:11:53,458 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:11:52" (1/1) ... [2023-12-02 16:11:53,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:11:52" (1/1) ... [2023-12-02 16:11:54,420 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:11:52" (1/1) ... [2023-12-02 16:11:54,460 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:11:52" (1/1) ... [2023-12-02 16:11:54,525 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:11:52" (1/1) ... [2023-12-02 16:11:54,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:11:52" (1/1) ... [2023-12-02 16:11:54,628 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:11:54,629 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:11:54,629 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:11:54,629 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:11:54,630 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:11:52" (1/1) ... [2023-12-02 16:11:54,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:11:54,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55da911-4834-4232-bb4b-40a2c9b6c050/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:11:54,658 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55da911-4834-4232-bb4b-40a2c9b6c050/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:11:54,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55da911-4834-4232-bb4b-40a2c9b6c050/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:11:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-12-02 16:11:54,699 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-12-02 16:11:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 16:11:54,700 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 16:11:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2023-12-02 16:11:54,700 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2023-12-02 16:11:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tm6000_devlist_mutex [2023-12-02 16:11:54,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tm6000_devlist_mutex [2023-12-02 16:11:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2023-12-02 16:11:54,701 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2023-12-02 16:11:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 16:11:54,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 16:11:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure __tm6000_ir_int_stop [2023-12-02 16:11:54,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __tm6000_ir_int_stop [2023-12-02 16:11:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_i2c_register [2023-12-02 16:11:54,702 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_i2c_register [2023-12-02 16:11:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2023-12-02 16:11:54,702 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2023-12-02 16:11:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_mmap [2023-12-02 16:11:54,702 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_mmap [2023-12-02 16:11:54,703 INFO L130 BoogieDeclarations]: Found specification of procedure request_module_async [2023-12-02 16:11:54,703 INFO L138 BoogieDeclarations]: Found implementation of procedure request_module_async [2023-12-02 16:11:54,703 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_set_reg_mask [2023-12-02 16:11:54,703 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_set_reg_mask [2023-12-02 16:11:54,703 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2023-12-02 16:11:54,703 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2023-12-02 16:11:54,704 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-12-02 16:11:54,704 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-12-02 16:11:54,704 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_ir_int_stop [2023-12-02 16:11:54,704 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_ir_int_stop [2023-12-02 16:11:54,704 INFO L130 BoogieDeclarations]: Found specification of procedure res_free [2023-12-02 16:11:54,704 INFO L138 BoogieDeclarations]: Found implementation of procedure res_free [2023-12-02 16:11:54,704 INFO L130 BoogieDeclarations]: Found specification of procedure vdev_init [2023-12-02 16:11:54,704 INFO L138 BoogieDeclarations]: Found implementation of procedure vdev_init [2023-12-02 16:11:54,704 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_free_urb_buffers [2023-12-02 16:11:54,704 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_free_urb_buffers [2023-12-02 16:11:54,705 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-12-02 16:11:54,705 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-12-02 16:11:54,705 INFO L130 BoogieDeclarations]: Found specification of procedure free_buffer [2023-12-02 16:11:54,705 INFO L138 BoogieDeclarations]: Found implementation of procedure free_buffer [2023-12-02 16:11:54,705 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_init_analog_mode [2023-12-02 16:11:54,705 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_init_analog_mode [2023-12-02 16:11:54,705 INFO L130 BoogieDeclarations]: Found specification of procedure __request_module [2023-12-02 16:11:54,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_module [2023-12-02 16:11:54,705 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 16:11:54,705 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2023-12-02 16:11:54,706 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2023-12-02 16:11:54,706 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-12-02 16:11:54,706 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-12-02 16:11:54,706 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2023-12-02 16:11:54,706 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2023-12-02 16:11:54,706 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_set_fourcc_format [2023-12-02 16:11:54,707 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_set_fourcc_format [2023-12-02 16:11:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_poll [2023-12-02 16:11:54,707 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_poll [2023-12-02 16:11:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_frequency [2023-12-02 16:11:54,707 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_frequency [2023-12-02 16:11:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_ir_keydown [2023-12-02 16:11:54,707 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_ir_keydown [2023-12-02 16:11:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2023-12-02 16:11:54,708 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2023-12-02 16:11:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 16:11:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_flash_led [2023-12-02 16:11:54,708 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_flash_led [2023-12-02 16:11:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_open [2023-12-02 16:11:54,708 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_open [2023-12-02 16:11:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-12-02 16:11:54,709 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-12-02 16:11:54,709 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 16:11:54,709 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 16:11:54,709 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~v4l2_std_id~0~TO~int [2023-12-02 16:11:54,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~v4l2_std_id~0~TO~int [2023-12-02 16:11:54,709 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_config_tuner [2023-12-02 16:11:54,709 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_config_tuner [2023-12-02 16:11:54,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_video_device [2023-12-02 16:11:54,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_video_device [2023-12-02 16:11:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2023-12-02 16:11:54,710 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2023-12-02 16:11:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 16:11:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_read_write_usb [2023-12-02 16:11:54,710 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_read_write_usb [2023-12-02 16:11:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_start_thread [2023-12-02 16:11:54,711 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_start_thread [2023-12-02 16:11:54,711 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-12-02 16:11:54,711 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-12-02 16:11:54,711 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2023-12-02 16:11:54,711 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2023-12-02 16:11:54,711 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_set_reg [2023-12-02 16:11:54,711 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_set_reg [2023-12-02 16:11:54,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 16:11:54,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 16:11:54,711 INFO L130 BoogieDeclarations]: Found specification of procedure get_max_endpoint [2023-12-02 16:11:54,711 INFO L138 BoogieDeclarations]: Found implementation of procedure get_max_endpoint [2023-12-02 16:11:54,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 16:11:54,712 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 16:11:54,712 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_i2c_recv_regs [2023-12-02 16:11:54,712 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_i2c_recv_regs [2023-12-02 16:11:54,712 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-12-02 16:11:54,712 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-12-02 16:11:54,712 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-12-02 16:11:54,713 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-12-02 16:11:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2023-12-02 16:11:54,713 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_subscribe_event [2023-12-02 16:11:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure video_unregister_device [2023-12-02 16:11:54,713 INFO L138 BoogieDeclarations]: Found implementation of procedure video_unregister_device [2023-12-02 16:11:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure __tm6000_open [2023-12-02 16:11:54,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __tm6000_open [2023-12-02 16:11:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-12-02 16:11:54,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-12-02 16:11:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 16:11:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:11:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 16:11:54,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 16:11:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 16:11:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-12-02 16:11:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_ir_int_start [2023-12-02 16:11:54,714 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_ir_int_start [2023-12-02 16:11:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-12-02 16:11:54,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-12-02 16:11:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_queue [2023-12-02 16:11:54,715 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_queue [2023-12-02 16:11:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-12-02 16:11:54,715 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-12-02 16:11:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_prepare [2023-12-02 16:11:54,715 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_prepare [2023-12-02 16:11:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2023-12-02 16:11:54,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2023-12-02 16:11:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-12-02 16:11:54,716 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-12-02 16:11:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure format_by_fourcc [2023-12-02 16:11:54,716 INFO L138 BoogieDeclarations]: Found implementation of procedure format_by_fourcc [2023-12-02 16:11:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2023-12-02 16:11:54,716 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2023-12-02 16:11:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2023-12-02 16:11:54,716 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_unsubscribe [2023-12-02 16:11:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_init_class [2023-12-02 16:11:54,717 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_init_class [2023-12-02 16:11:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_ir_change_protocol [2023-12-02 16:11:54,717 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_ir_change_protocol [2023-12-02 16:11:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:11:54,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:11:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_init_extension [2023-12-02 16:11:54,718 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_init_extension [2023-12-02 16:11:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-12-02 16:11:54,718 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-12-02 16:11:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-12-02 16:11:54,718 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-12-02 16:11:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_radio_s_ctrl [2023-12-02 16:11:54,718 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_radio_s_ctrl [2023-12-02 16:11:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_i2c_new_subdev [2023-12-02 16:11:54,719 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_i2c_new_subdev [2023-12-02 16:11:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 16:11:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 16:11:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 16:11:54,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 16:11:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_std [2023-12-02 16:11:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_std [2023-12-02 16:11:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2023-12-02 16:11:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2023-12-02 16:11:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2023-12-02 16:11:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2023-12-02 16:11:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_load_std [2023-12-02 16:11:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_load_std [2023-12-02 16:11:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2023-12-02 16:11:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2023-12-02 16:11:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 16:11:54,721 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 16:11:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 16:11:54,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 16:11:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2023-12-02 16:11:54,721 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2023-12-02 16:11:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure res_get [2023-12-02 16:11:54,721 INFO L138 BoogieDeclarations]: Found implementation of procedure res_get [2023-12-02 16:11:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tm6000_core [2023-12-02 16:11:54,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tm6000_core [2023-12-02 16:11:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_poll [2023-12-02 16:11:54,721 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_poll [2023-12-02 16:11:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 16:11:54,722 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 16:11:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 16:11:54,722 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 16:11:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_s_ctrl [2023-12-02 16:11:54,722 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_s_ctrl [2023-12-02 16:11:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_frequency [2023-12-02 16:11:54,722 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_frequency [2023-12-02 16:11:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_tm6000_core [2023-12-02 16:11:54,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_tm6000_core [2023-12-02 16:11:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure usb_maxpacket [2023-12-02 16:11:54,723 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_maxpacket [2023-12-02 16:11:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-12-02 16:11:54,723 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-12-02 16:11:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_register_extension [2023-12-02 16:11:54,723 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_register_extension [2023-12-02 16:11:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2023-12-02 16:11:54,723 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2023-12-02 16:11:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 16:11:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 16:11:54,723 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 16:11:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 16:11:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_3 [2023-12-02 16:11:54,724 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_3 [2023-12-02 16:11:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2023-12-02 16:11:54,724 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2023-12-02 16:11:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-12-02 16:11:54,724 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-12-02 16:11:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 16:11:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 16:11:54,724 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 16:11:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2023-12-02 16:11:54,724 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2023-12-02 16:11:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-12-02 16:11:54,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-12-02 16:11:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-12-02 16:11:54,725 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-12-02 16:11:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2023-12-02 16:11:54,725 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2023-12-02 16:11:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_usb_lock_of_tm6000_core [2023-12-02 16:11:54,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_usb_lock_of_tm6000_core [2023-12-02 16:11:54,726 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-12-02 16:11:54,726 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-12-02 16:11:54,726 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-12-02 16:11:54,726 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-12-02 16:11:54,726 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_ir_handle_key [2023-12-02 16:11:54,726 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_ir_handle_key [2023-12-02 16:11:54,726 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-12-02 16:11:54,726 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-12-02 16:11:54,726 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-12-02 16:11:54,726 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-12-02 16:11:54,726 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querycap [2023-12-02 16:11:54,727 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querycap [2023-12-02 16:11:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure video_register_device [2023-12-02 16:11:54,727 INFO L138 BoogieDeclarations]: Found implementation of procedure video_register_device [2023-12-02 16:11:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_init_dev [2023-12-02 16:11:54,727 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_init_dev [2023-12-02 16:11:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-12-02 16:11:54,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-12-02 16:11:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_release [2023-12-02 16:11:54,727 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_release [2023-12-02 16:11:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 16:11:54,727 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 16:11:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure __tm6000_ir_int_start [2023-12-02 16:11:54,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __tm6000_ir_int_start [2023-12-02 16:11:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 16:11:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 16:11:54,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 16:11:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_usb_probe [2023-12-02 16:11:54,728 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_usb_probe [2023-12-02 16:11:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-12-02 16:11:54,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-12-02 16:11:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_input [2023-12-02 16:11:54,728 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_input [2023-12-02 16:11:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_get_std_res [2023-12-02 16:11:54,728 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_get_std_res [2023-12-02 16:11:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_video_device [2023-12-02 16:11:54,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_video_device [2023-12-02 16:11:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_i2c_xfer [2023-12-02 16:11:54,729 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_i2c_xfer [2023-12-02 16:11:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_usb_lock_of_tm6000_core [2023-12-02 16:11:54,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_usb_lock_of_tm6000_core [2023-12-02 16:11:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_setup [2023-12-02 16:11:54,729 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_setup [2023-12-02 16:11:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_prepare_isoc [2023-12-02 16:11:54,729 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_prepare_isoc [2023-12-02 16:11:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tm6000_devlist_mutex [2023-12-02 16:11:54,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tm6000_devlist_mutex [2023-12-02 16:11:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2023-12-02 16:11:54,730 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2023-12-02 16:11:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure fill_board_specific_data [2023-12-02 16:11:54,730 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_board_specific_data [2023-12-02 16:11:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-12-02 16:11:54,730 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-12-02 16:11:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_uninit_isoc [2023-12-02 16:11:54,730 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_uninit_isoc [2023-12-02 16:11:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 16:11:54,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 16:11:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:11:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tm6000_core [2023-12-02 16:11:54,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tm6000_core [2023-12-02 16:11:55,898 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:11:55,903 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:11:56,173 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 16:12:26,258 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:12:28,926 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:12:28,926 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-02 16:12:28,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:12:28 BoogieIcfgContainer [2023-12-02 16:12:28,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:12:28,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:12:28,931 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:12:28,934 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:12:28,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:11:46" (1/3) ... [2023-12-02 16:12:28,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@927e0eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:12:28, skipping insertion in model container [2023-12-02 16:12:28,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:11:52" (2/3) ... [2023-12-02 16:12:28,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@927e0eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:12:28, skipping insertion in model container [2023-12-02 16:12:28,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:12:28" (3/3) ... [2023-12-02 16:12:28,936 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--tm6000--tm6000.ko-entry_point.cil.out.i [2023-12-02 16:12:28,951 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:12:28,951 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:12:29,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:12:29,048 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@21c97d02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:12:29,048 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:12:29,062 INFO L276 IsEmpty]: Start isEmpty. Operand has 2534 states, 1590 states have (on average 1.330817610062893) internal successors, (2116), 1633 states have internal predecessors, (2116), 813 states have call successors, (813), 130 states have call predecessors, (813), 129 states have return successors, (800), 796 states have call predecessors, (800), 800 states have call successors, (800) [2023-12-02 16:12:29,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 16:12:29,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:12:29,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:12:29,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:12:29,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:12:29,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1853258053, now seen corresponding path program 1 times [2023-12-02 16:12:29,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:12:29,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291867324] [2023-12-02 16:12:29,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:29,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:12:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:12:33,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:12:33,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291867324] [2023-12-02 16:12:33,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291867324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:12:33,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:12:33,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:12:33,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349935729] [2023-12-02 16:12:33,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:12:33,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:12:33,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:12:33,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:12:33,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:12:33,821 INFO L87 Difference]: Start difference. First operand has 2534 states, 1590 states have (on average 1.330817610062893) internal successors, (2116), 1633 states have internal predecessors, (2116), 813 states have call successors, (813), 130 states have call predecessors, (813), 129 states have return successors, (800), 796 states have call predecessors, (800), 800 states have call successors, (800) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (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) [2023-12-02 16:12:37,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:12:38,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:12:40,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:12:42,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:12:45,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:12:47,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:12:50,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:12:52,215 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 [] [2023-12-02 16:12:53,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:12:53,962 INFO L93 Difference]: Finished difference Result 7543 states and 11759 transitions. [2023-12-02 16:12:53,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:12:53,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (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 32 [2023-12-02 16:12:53,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:12:54,011 INFO L225 Difference]: With dead ends: 7543 [2023-12-02 16:12:54,012 INFO L226 Difference]: Without dead ends: 4978 [2023-12-02 16:12:54,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:12:54,038 INFO L413 NwaCegarLoop]: 3401 mSDtfsCounter, 3618 mSDsluCounter, 3387 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3618 SdHoareTripleChecker+Valid, 6788 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:12:54,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3618 Valid, 6788 Invalid, 637 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 628 Invalid, 6 Unknown, 0 Unchecked, 19.6s Time] [2023-12-02 16:12:54,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4978 states. [2023-12-02 16:12:54,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4978 to 4967. [2023-12-02 16:12:54,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4967 states, 3143 states have (on average 1.3191218580973592) internal successors, (4146), 3182 states have internal predecessors, (4146), 1567 states have call successors, (1567), 257 states have call predecessors, (1567), 256 states have return successors, (1549), 1541 states have call predecessors, (1549), 1549 states have call successors, (1549) [2023-12-02 16:12:54,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4967 states to 4967 states and 7262 transitions. [2023-12-02 16:12:54,462 INFO L78 Accepts]: Start accepts. Automaton has 4967 states and 7262 transitions. Word has length 32 [2023-12-02 16:12:54,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:12:54,463 INFO L495 AbstractCegarLoop]: Abstraction has 4967 states and 7262 transitions. [2023-12-02 16:12:54,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (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) [2023-12-02 16:12:54,463 INFO L276 IsEmpty]: Start isEmpty. Operand 4967 states and 7262 transitions. [2023-12-02 16:12:54,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 16:12:54,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:12:54,469 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:12:54,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:12:54,470 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:12:54,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:12:54,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1461619071, now seen corresponding path program 1 times [2023-12-02 16:12:54,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:12:54,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698990920] [2023-12-02 16:12:54,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:54,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:12:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 16:12:57,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:12:57,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698990920] [2023-12-02 16:12:57,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698990920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:12:57,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:12:57,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:12:57,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879719235] [2023-12-02 16:12:57,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:12:57,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:12:57,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:12:57,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:12:57,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:12:57,779 INFO L87 Difference]: Start difference. First operand 4967 states and 7262 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:13:01,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:13:02,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:13:05,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:13:06,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:06,445 INFO L93 Difference]: Finished difference Result 4969 states and 7263 transitions. [2023-12-02 16:13:06,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:13:06,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2023-12-02 16:13:06,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:06,485 INFO L225 Difference]: With dead ends: 4969 [2023-12-02 16:13:06,485 INFO L226 Difference]: Without dead ends: 4966 [2023-12-02 16:13:06,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:13:06,489 INFO L413 NwaCegarLoop]: 3362 mSDtfsCounter, 3651 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3651 SdHoareTripleChecker+Valid, 3362 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:06,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3651 Valid, 3362 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 310 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2023-12-02 16:13:06,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4966 states. [2023-12-02 16:13:06,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4966 to 4966. [2023-12-02 16:13:06,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4966 states, 3143 states have (on average 1.3188036907413299) internal successors, (4145), 3181 states have internal predecessors, (4145), 1566 states have call successors, (1566), 257 states have call predecessors, (1566), 256 states have return successors, (1549), 1541 states have call predecessors, (1549), 1549 states have call successors, (1549) [2023-12-02 16:13:06,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4966 states to 4966 states and 7260 transitions. [2023-12-02 16:13:06,874 INFO L78 Accepts]: Start accepts. Automaton has 4966 states and 7260 transitions. Word has length 46 [2023-12-02 16:13:06,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:06,875 INFO L495 AbstractCegarLoop]: Abstraction has 4966 states and 7260 transitions. [2023-12-02 16:13:06,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:13:06,875 INFO L276 IsEmpty]: Start isEmpty. Operand 4966 states and 7260 transitions. [2023-12-02 16:13:06,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 16:13:06,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:06,879 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:13:06,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 16:13:06,879 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:13:06,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:06,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1926555023, now seen corresponding path program 1 times [2023-12-02 16:13:06,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:06,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051019562] [2023-12-02 16:13:06,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:06,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 16:13:10,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:10,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051019562] [2023-12-02 16:13:10,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051019562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:10,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:10,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:13:10,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955981842] [2023-12-02 16:13:10,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:10,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:13:10,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:10,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:13:10,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:13:10,467 INFO L87 Difference]: Start difference. First operand 4966 states and 7260 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:13:13,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:13:15,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:13:17,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:13:20,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:13:22,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:13:24,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:13:27,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:13:29,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:13:31,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:13:32,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:32,050 INFO L93 Difference]: Finished difference Result 14860 states and 21725 transitions. [2023-12-02 16:13:32,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:13:32,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2023-12-02 16:13:32,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:32,203 INFO L225 Difference]: With dead ends: 14860 [2023-12-02 16:13:32,203 INFO L226 Difference]: Without dead ends: 9897 [2023-12-02 16:13:32,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:13:32,223 INFO L413 NwaCegarLoop]: 3364 mSDtfsCounter, 3630 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3630 SdHoareTripleChecker+Valid, 6720 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:32,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3630 Valid, 6720 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 622 Invalid, 6 Unknown, 0 Unchecked, 21.2s Time] [2023-12-02 16:13:32,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9897 states. [2023-12-02 16:13:32,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9897 to 9867. [2023-12-02 16:13:32,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9867 states, 6251 states have (on average 1.3185090385538314) internal successors, (8242), 6312 states have internal predecessors, (8242), 3103 states have call successors, (3103), 513 states have call predecessors, (3103), 512 states have return successors, (3086), 3069 states have call predecessors, (3086), 3086 states have call successors, (3086) [2023-12-02 16:13:32,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9867 states to 9867 states and 14431 transitions. [2023-12-02 16:13:32,808 INFO L78 Accepts]: Start accepts. Automaton has 9867 states and 14431 transitions. Word has length 50 [2023-12-02 16:13:32,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:32,809 INFO L495 AbstractCegarLoop]: Abstraction has 9867 states and 14431 transitions. [2023-12-02 16:13:32,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:13:32,809 INFO L276 IsEmpty]: Start isEmpty. Operand 9867 states and 14431 transitions. [2023-12-02 16:13:32,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 16:13:32,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:32,812 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:13:32,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 16:13:32,812 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:13:32,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:32,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1933136449, now seen corresponding path program 1 times [2023-12-02 16:13:32,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:32,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808668620] [2023-12-02 16:13:32,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:32,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:35,910 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 16:13:35,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:35,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808668620] [2023-12-02 16:13:35,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808668620] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:35,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:35,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:13:35,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11757743] [2023-12-02 16:13:35,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:35,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:13:35,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:35,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:13:35,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:13:35,912 INFO L87 Difference]: Start difference. First operand 9867 states and 14431 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:13:38,896 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 [] [2023-12-02 16:13:41,924 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 [] [2023-12-02 16:13:43,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:43,444 INFO L93 Difference]: Finished difference Result 9869 states and 14432 transitions. [2023-12-02 16:13:43,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:13:43,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2023-12-02 16:13:43,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:43,492 INFO L225 Difference]: With dead ends: 9869 [2023-12-02 16:13:43,492 INFO L226 Difference]: Without dead ends: 9866 [2023-12-02 16:13:43,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:13:43,498 INFO L413 NwaCegarLoop]: 3360 mSDtfsCounter, 3648 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3648 SdHoareTripleChecker+Valid, 3360 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:43,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3648 Valid, 3360 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 310 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2023-12-02 16:13:43,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9866 states. [2023-12-02 16:13:44,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9866 to 9866. [2023-12-02 16:13:44,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9866 states, 6251 states have (on average 1.318349064149736) internal successors, (8241), 6311 states have internal predecessors, (8241), 3102 states have call successors, (3102), 513 states have call predecessors, (3102), 512 states have return successors, (3086), 3069 states have call predecessors, (3086), 3086 states have call successors, (3086) [2023-12-02 16:13:44,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9866 states to 9866 states and 14429 transitions. [2023-12-02 16:13:44,449 INFO L78 Accepts]: Start accepts. Automaton has 9866 states and 14429 transitions. Word has length 47 [2023-12-02 16:13:44,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:44,450 INFO L495 AbstractCegarLoop]: Abstraction has 9866 states and 14429 transitions. [2023-12-02 16:13:44,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:13:44,450 INFO L276 IsEmpty]: Start isEmpty. Operand 9866 states and 14429 transitions. [2023-12-02 16:13:44,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-02 16:13:44,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:44,452 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:13:44,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 16:13:44,452 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:13:44,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:44,453 INFO L85 PathProgramCache]: Analyzing trace with hash -203619964, now seen corresponding path program 1 times [2023-12-02 16:13:44,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:44,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165539633] [2023-12-02 16:13:44,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:44,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 16:13:47,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:47,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165539633] [2023-12-02 16:13:47,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165539633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:47,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:47,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:13:47,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343594573] [2023-12-02 16:13:47,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:47,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:13:47,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:47,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:13:47,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:13:47,638 INFO L87 Difference]: Start difference. First operand 9866 states and 14429 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:13:50,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:13:52,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:13:54,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:13:56,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:13:59,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:14:02,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:14:04,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:14:07,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:14:07,860 INFO L93 Difference]: Finished difference Result 28585 states and 42331 transitions. [2023-12-02 16:14:07,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:14:07,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2023-12-02 16:14:07,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:14:07,975 INFO L225 Difference]: With dead ends: 28585 [2023-12-02 16:14:07,975 INFO L226 Difference]: Without dead ends: 18722 [2023-12-02 16:14:08,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:14:08,049 INFO L413 NwaCegarLoop]: 3760 mSDtfsCounter, 3337 mSDsluCounter, 3303 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 7 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3337 SdHoareTripleChecker+Valid, 7063 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:14:08,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3337 Valid, 7063 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 659 Invalid, 5 Unknown, 0 Unchecked, 19.5s Time] [2023-12-02 16:14:08,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18722 states. [2023-12-02 16:14:09,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18722 to 18695. [2023-12-02 16:14:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18695 states, 11869 states have (on average 1.3186452102114752) internal successors, (15651), 11990 states have internal predecessors, (15651), 5841 states have call successors, (5841), 1002 states have call predecessors, (5841), 984 states have return successors, (6099), 5750 states have call predecessors, (6099), 5823 states have call successors, (6099) [2023-12-02 16:14:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18695 states to 18695 states and 27591 transitions. [2023-12-02 16:14:09,875 INFO L78 Accepts]: Start accepts. Automaton has 18695 states and 27591 transitions. Word has length 48 [2023-12-02 16:14:09,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:14:09,875 INFO L495 AbstractCegarLoop]: Abstraction has 18695 states and 27591 transitions. [2023-12-02 16:14:09,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:14:09,876 INFO L276 IsEmpty]: Start isEmpty. Operand 18695 states and 27591 transitions. [2023-12-02 16:14:09,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 16:14:09,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:14:09,878 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:14:09,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 16:14:09,879 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:14:09,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:14:09,879 INFO L85 PathProgramCache]: Analyzing trace with hash -2018554460, now seen corresponding path program 1 times [2023-12-02 16:14:09,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:14:09,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959279840] [2023-12-02 16:14:09,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:14:09,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:14:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:14:13,086 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 16:14:13,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:14:13,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959279840] [2023-12-02 16:14:13,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959279840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:14:13,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:14:13,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:14:13,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809567219] [2023-12-02 16:14:13,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:14:13,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:14:13,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:14:13,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:14:13,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:14:13,089 INFO L87 Difference]: Start difference. First operand 18695 states and 27591 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:14:16,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:14:18,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:14:19,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:14:19,624 INFO L93 Difference]: Finished difference Result 18697 states and 27592 transitions. [2023-12-02 16:14:19,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:14:19,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2023-12-02 16:14:19,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:14:19,694 INFO L225 Difference]: With dead ends: 18697 [2023-12-02 16:14:19,694 INFO L226 Difference]: Without dead ends: 18694 [2023-12-02 16:14:19,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:14:19,701 INFO L413 NwaCegarLoop]: 3358 mSDtfsCounter, 3644 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3644 SdHoareTripleChecker+Valid, 3358 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:14:19,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3644 Valid, 3358 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 311 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2023-12-02 16:14:19,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18694 states. [2023-12-02 16:14:20,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18694 to 18694. [2023-12-02 16:14:20,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18694 states, 11869 states have (on average 1.318560957115174) internal successors, (15650), 11989 states have internal predecessors, (15650), 5840 states have call successors, (5840), 1002 states have call predecessors, (5840), 984 states have return successors, (6099), 5750 states have call predecessors, (6099), 5823 states have call successors, (6099) [2023-12-02 16:14:20,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18694 states to 18694 states and 27589 transitions. [2023-12-02 16:14:20,918 INFO L78 Accepts]: Start accepts. Automaton has 18694 states and 27589 transitions. Word has length 49 [2023-12-02 16:14:20,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:14:20,919 INFO L495 AbstractCegarLoop]: Abstraction has 18694 states and 27589 transitions. [2023-12-02 16:14:20,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:14:20,919 INFO L276 IsEmpty]: Start isEmpty. Operand 18694 states and 27589 transitions. [2023-12-02 16:14:20,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 16:14:20,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:14:20,920 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:14:20,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 16:14:20,921 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:14:20,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:14:20,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1848023175, now seen corresponding path program 1 times [2023-12-02 16:14:20,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:14:20,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325443893] [2023-12-02 16:14:20,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:14:20,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:14:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:14:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 16:14:24,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:14:24,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325443893] [2023-12-02 16:14:24,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325443893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:14:24,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:14:24,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:14:24,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38908590] [2023-12-02 16:14:24,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:14:24,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:14:24,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:14:24,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:14:24,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:14:24,124 INFO L87 Difference]: Start difference. First operand 18694 states and 27589 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:14:27,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:14:30,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:14:32,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:14:34,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:14:36,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:14:38,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:14:40,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:14:43,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:14:43,154 INFO L93 Difference]: Finished difference Result 49228 states and 72924 transitions. [2023-12-02 16:14:43,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:14:43,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2023-12-02 16:14:43,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:14:43,341 INFO L225 Difference]: With dead ends: 49228 [2023-12-02 16:14:43,341 INFO L226 Difference]: Without dead ends: 30537 [2023-12-02 16:14:43,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:14:43,391 INFO L413 NwaCegarLoop]: 4106 mSDtfsCounter, 3581 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3581 SdHoareTripleChecker+Valid, 6265 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:14:43,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3581 Valid, 6265 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 587 Invalid, 5 Unknown, 0 Unchecked, 17.8s Time] [2023-12-02 16:14:43,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30537 states. [2023-12-02 16:14:45,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30537 to 30477. [2023-12-02 16:14:45,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30477 states, 18952 states have (on average 1.296116504854369) internal successors, (24564), 19130 states have internal predecessors, (24564), 9796 states have call successors, (9796), 1775 states have call predecessors, (9796), 1728 states have return successors, (10307), 9651 states have call predecessors, (10307), 9779 states have call successors, (10307) [2023-12-02 16:14:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30477 states to 30477 states and 44667 transitions. [2023-12-02 16:14:45,635 INFO L78 Accepts]: Start accepts. Automaton has 30477 states and 44667 transitions. Word has length 50 [2023-12-02 16:14:45,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:14:45,635 INFO L495 AbstractCegarLoop]: Abstraction has 30477 states and 44667 transitions. [2023-12-02 16:14:45,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:14:45,636 INFO L276 IsEmpty]: Start isEmpty. Operand 30477 states and 44667 transitions. [2023-12-02 16:14:45,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-02 16:14:45,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:14:45,637 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:14:45,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 16:14:45,637 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:14:45,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:14:45,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1452850439, now seen corresponding path program 1 times [2023-12-02 16:14:45,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:14:45,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842082481] [2023-12-02 16:14:45,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:14:45,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:14:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:14:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 16:14:48,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:14:48,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842082481] [2023-12-02 16:14:48,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842082481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:14:48,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:14:48,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:14:48,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886704939] [2023-12-02 16:14:48,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:14:48,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:14:48,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:14:48,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:14:48,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:14:48,669 INFO L87 Difference]: Start difference. First operand 30477 states and 44667 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:14:51,657 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 [] [2023-12-02 16:14:53,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:14:55,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:14:57,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:14:57,758 INFO L93 Difference]: Finished difference Result 30479 states and 44668 transitions. [2023-12-02 16:14:57,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:14:57,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2023-12-02 16:14:57,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:14:57,869 INFO L225 Difference]: With dead ends: 30479 [2023-12-02 16:14:57,869 INFO L226 Difference]: Without dead ends: 30476 [2023-12-02 16:14:57,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:14:57,883 INFO L413 NwaCegarLoop]: 3354 mSDtfsCounter, 3638 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3638 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:14:57,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3638 Valid, 3354 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 310 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2023-12-02 16:14:57,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30476 states. [2023-12-02 16:15:00,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30476 to 30476. [2023-12-02 16:15:00,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30476 states, 18952 states have (on average 1.2960637399746728) internal successors, (24563), 19129 states have internal predecessors, (24563), 9795 states have call successors, (9795), 1775 states have call predecessors, (9795), 1728 states have return successors, (10307), 9651 states have call predecessors, (10307), 9779 states have call successors, (10307) [2023-12-02 16:15:00,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30476 states to 30476 states and 44665 transitions. [2023-12-02 16:15:00,204 INFO L78 Accepts]: Start accepts. Automaton has 30476 states and 44665 transitions. Word has length 51 [2023-12-02 16:15:00,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:15:00,204 INFO L495 AbstractCegarLoop]: Abstraction has 30476 states and 44665 transitions. [2023-12-02 16:15:00,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:15:00,204 INFO L276 IsEmpty]: Start isEmpty. Operand 30476 states and 44665 transitions. [2023-12-02 16:15:00,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 16:15:00,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:15:00,206 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:15:00,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 16:15:00,206 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:15:00,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:15:00,207 INFO L85 PathProgramCache]: Analyzing trace with hash 2087402378, now seen corresponding path program 1 times [2023-12-02 16:15:00,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:15:00,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87980806] [2023-12-02 16:15:00,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:15:00,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:15:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:15:03,262 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 16:15:03,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:15:03,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87980806] [2023-12-02 16:15:03,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87980806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:15:03,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:15:03,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:15:03,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974561510] [2023-12-02 16:15:03,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:15:03,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:15:03,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:15:03,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:15:03,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:15:03,265 INFO L87 Difference]: Start difference. First operand 30476 states and 44665 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:15:05,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:15:07,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:15:09,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:15:11,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:15:14,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:15:16,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:15:18,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:15:20,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:15:22,788 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 [] [2023-12-02 16:15:25,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:15:25,894 INFO L93 Difference]: Finished difference Result 76914 states and 113702 transitions. [2023-12-02 16:15:25,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:15:25,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2023-12-02 16:15:25,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:15:26,025 INFO L225 Difference]: With dead ends: 76914 [2023-12-02 16:15:26,025 INFO L226 Difference]: Without dead ends: 46441 [2023-12-02 16:15:26,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:15:26,127 INFO L413 NwaCegarLoop]: 4599 mSDtfsCounter, 3599 mSDsluCounter, 2096 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3599 SdHoareTripleChecker+Valid, 6695 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:15:26,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3599 Valid, 6695 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 631 Invalid, 6 Unknown, 0 Unchecked, 20.4s Time] [2023-12-02 16:15:26,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46441 states. [2023-12-02 16:15:29,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46441 to 46334. [2023-12-02 16:15:29,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46334 states, 28572 states have (on average 1.2845443091138178) internal successors, (36702), 28846 states have internal predecessors, (36702), 14965 states have call successors, (14965), 2912 states have call predecessors, (14965), 2796 states have return successors, (16055), 14703 states have call predecessors, (16055), 14947 states have call successors, (16055) [2023-12-02 16:15:29,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46334 states to 46334 states and 67722 transitions. [2023-12-02 16:15:29,794 INFO L78 Accepts]: Start accepts. Automaton has 46334 states and 67722 transitions. Word has length 52 [2023-12-02 16:15:29,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:15:29,794 INFO L495 AbstractCegarLoop]: Abstraction has 46334 states and 67722 transitions. [2023-12-02 16:15:29,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:15:29,794 INFO L276 IsEmpty]: Start isEmpty. Operand 46334 states and 67722 transitions. [2023-12-02 16:15:29,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 16:15:29,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:15:29,796 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:15:29,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 16:15:29,796 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:15:29,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:15:29,797 INFO L85 PathProgramCache]: Analyzing trace with hash -2068101400, now seen corresponding path program 1 times [2023-12-02 16:15:29,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:15:29,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110311377] [2023-12-02 16:15:29,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:15:29,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:15:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:15:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 16:15:33,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:15:33,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110311377] [2023-12-02 16:15:33,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110311377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:15:33,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:15:33,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:15:33,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275248918] [2023-12-02 16:15:33,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:15:33,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:15:33,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:15:33,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:15:33,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:15:33,057 INFO L87 Difference]: Start difference. First operand 46334 states and 67722 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:15:35,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:15:37,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:15:39,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:15:44,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:15:46,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:15:50,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:15:52,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:15:56,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:15:56,449 INFO L93 Difference]: Finished difference Result 138858 states and 202954 transitions. [2023-12-02 16:15:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:15:56,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2023-12-02 16:15:56,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:15:56,804 INFO L225 Difference]: With dead ends: 138858 [2023-12-02 16:15:56,804 INFO L226 Difference]: Without dead ends: 92527 [2023-12-02 16:15:56,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:15:56,915 INFO L413 NwaCegarLoop]: 3368 mSDtfsCounter, 3597 mSDsluCounter, 3346 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3597 SdHoareTripleChecker+Valid, 6714 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:15:56,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3597 Valid, 6714 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 622 Invalid, 6 Unknown, 0 Unchecked, 19.0s Time] [2023-12-02 16:15:56,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92527 states. [2023-12-02 16:16:04,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92527 to 92478. [2023-12-02 16:16:04,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92478 states, 57024 states have (on average 1.2846871492704826) internal successors, (73258), 57562 states have internal predecessors, (73258), 29861 states have call successors, (29861), 5820 states have call predecessors, (29861), 5592 states have return successors, (32059), 29351 states have call predecessors, (32059), 29843 states have call successors, (32059) [2023-12-02 16:16:04,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92478 states to 92478 states and 135178 transitions. [2023-12-02 16:16:04,530 INFO L78 Accepts]: Start accepts. Automaton has 92478 states and 135178 transitions. Word has length 56 [2023-12-02 16:16:04,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:16:04,531 INFO L495 AbstractCegarLoop]: Abstraction has 92478 states and 135178 transitions. [2023-12-02 16:16:04,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:16:04,531 INFO L276 IsEmpty]: Start isEmpty. Operand 92478 states and 135178 transitions. [2023-12-02 16:16:04,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 16:16:04,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:16:04,532 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:16:04,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 16:16:04,532 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:16:04,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:16:04,533 INFO L85 PathProgramCache]: Analyzing trace with hash 283680874, now seen corresponding path program 1 times [2023-12-02 16:16:04,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:16:04,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320745180] [2023-12-02 16:16:04,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:04,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:16:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:16:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 16:16:07,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:16:07,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320745180] [2023-12-02 16:16:07,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320745180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:16:07,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:16:07,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:16:07,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914357837] [2023-12-02 16:16:07,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:16:07,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:16:07,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:16:07,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:16:07,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:16:07,678 INFO L87 Difference]: Start difference. First operand 92478 states and 135178 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:16:09,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:16:12,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:16:14,763 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 [] [2023-12-02 16:16:20,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:16:20,382 INFO L93 Difference]: Finished difference Result 92978 states and 135428 transitions. [2023-12-02 16:16:20,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:16:20,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2023-12-02 16:16:20,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:16:20,636 INFO L225 Difference]: With dead ends: 92978 [2023-12-02 16:16:20,636 INFO L226 Difference]: Without dead ends: 92974 [2023-12-02 16:16:20,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:16:20,662 INFO L413 NwaCegarLoop]: 3348 mSDtfsCounter, 3535 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3535 SdHoareTripleChecker+Valid, 3430 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:16:20,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3535 Valid, 3430 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 330 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2023-12-02 16:16:20,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92974 states. [2023-12-02 16:16:28,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92974 to 92972. [2023-12-02 16:16:28,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92972 states, 57272 states have (on average 1.2823194580248638) internal successors, (73441), 57808 states have internal predecessors, (73441), 29859 states have call successors, (29859), 6068 states have call predecessors, (29859), 5840 states have return successors, (32059), 29351 states have call predecessors, (32059), 29843 states have call successors, (32059) [2023-12-02 16:16:28,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92972 states to 92972 states and 135359 transitions. [2023-12-02 16:16:28,658 INFO L78 Accepts]: Start accepts. Automaton has 92972 states and 135359 transitions. Word has length 53 [2023-12-02 16:16:28,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:16:28,658 INFO L495 AbstractCegarLoop]: Abstraction has 92972 states and 135359 transitions. [2023-12-02 16:16:28,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:16:28,658 INFO L276 IsEmpty]: Start isEmpty. Operand 92972 states and 135359 transitions. [2023-12-02 16:16:28,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 16:16:28,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:16:28,660 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:16:28,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 16:16:28,660 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:16:28,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:16:28,660 INFO L85 PathProgramCache]: Analyzing trace with hash 202893965, now seen corresponding path program 1 times [2023-12-02 16:16:28,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:16:28,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532441320] [2023-12-02 16:16:28,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:28,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:16:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:16:32,408 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 16:16:32,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:16:32,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532441320] [2023-12-02 16:16:32,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532441320] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:16:32,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:16:32,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:16:32,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115647956] [2023-12-02 16:16:32,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:16:32,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:16:32,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:16:32,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:16:32,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:16:32,410 INFO L87 Difference]: Start difference. First operand 92972 states and 135359 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:16:34,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:16:37,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:16:39,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:16:44,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:16:44,590 INFO L93 Difference]: Finished difference Result 92974 states and 135360 transitions. [2023-12-02 16:16:44,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:16:44,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2023-12-02 16:16:44,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:16:44,835 INFO L225 Difference]: With dead ends: 92974 [2023-12-02 16:16:44,835 INFO L226 Difference]: Without dead ends: 92961 [2023-12-02 16:16:44,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:16:44,858 INFO L413 NwaCegarLoop]: 3347 mSDtfsCounter, 3627 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3627 SdHoareTripleChecker+Valid, 3347 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:16:44,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3627 Valid, 3347 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 309 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2023-12-02 16:16:44,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92961 states. [2023-12-02 16:16:52,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92961 to 92961. [2023-12-02 16:16:52,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92961 states, 57262 states have (on average 1.2822115888372743) internal successors, (73422), 57797 states have internal predecessors, (73422), 29858 states have call successors, (29858), 6068 states have call predecessors, (29858), 5840 states have return successors, (32059), 29351 states have call predecessors, (32059), 29843 states have call successors, (32059) [2023-12-02 16:16:52,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92961 states to 92961 states and 135339 transitions. [2023-12-02 16:16:52,796 INFO L78 Accepts]: Start accepts. Automaton has 92961 states and 135339 transitions. Word has length 54 [2023-12-02 16:16:52,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:16:52,796 INFO L495 AbstractCegarLoop]: Abstraction has 92961 states and 135339 transitions. [2023-12-02 16:16:52,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:16:52,797 INFO L276 IsEmpty]: Start isEmpty. Operand 92961 states and 135339 transitions. [2023-12-02 16:16:52,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 16:16:52,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:16:52,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:16:52,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 16:16:52,801 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:16:52,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:16:52,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1814106253, now seen corresponding path program 1 times [2023-12-02 16:16:52,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:16:52,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848791768] [2023-12-02 16:16:52,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:52,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:16:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:16:55,991 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 16:16:55,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:16:55,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848791768] [2023-12-02 16:16:55,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848791768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:16:55,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:16:55,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:16:55,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727241381] [2023-12-02 16:16:55,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:16:55,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:16:55,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:16:55,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:16:55,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:16:55,994 INFO L87 Difference]: Start difference. First operand 92961 states and 135339 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 16:16:58,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:17:00,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:17:03,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:17:08,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:17:10,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:17:15,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:17:17,278 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 [] [2023-12-02 16:17:26,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:17:26,423 INFO L93 Difference]: Finished difference Result 277427 states and 403797 transitions. [2023-12-02 16:17:26,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:17:26,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2023-12-02 16:17:26,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:17:27,208 INFO L225 Difference]: With dead ends: 277427 [2023-12-02 16:17:27,208 INFO L226 Difference]: Without dead ends: 184469 [2023-12-02 16:17:27,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:17:27,599 INFO L413 NwaCegarLoop]: 3370 mSDtfsCounter, 3491 mSDsluCounter, 3334 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3491 SdHoareTripleChecker+Valid, 6704 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:17:27,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3491 Valid, 6704 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 622 Invalid, 6 Unknown, 0 Unchecked, 19.7s Time] [2023-12-02 16:17:27,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184469 states. [2023-12-02 16:17:43,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184469 to 184433. [2023-12-02 16:17:43,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184433 states, 113422 states have (on average 1.280933152298496) internal successors, (145286), 114485 states have internal predecessors, (145286), 59354 states have call successors, (59354), 12108 states have call predecessors, (59354), 11656 states have return successors, (63771), 58351 states have call predecessors, (63771), 59339 states have call successors, (63771) [2023-12-02 16:17:44,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184433 states to 184433 states and 268411 transitions. [2023-12-02 16:17:45,015 INFO L78 Accepts]: Start accepts. Automaton has 184433 states and 268411 transitions. Word has length 94 [2023-12-02 16:17:45,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:17:45,016 INFO L495 AbstractCegarLoop]: Abstraction has 184433 states and 268411 transitions. [2023-12-02 16:17:45,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 16:17:45,016 INFO L276 IsEmpty]: Start isEmpty. Operand 184433 states and 268411 transitions. [2023-12-02 16:17:45,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 16:17:45,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:17:45,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:17:45,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 16:17:45,023 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:17:45,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:17:45,024 INFO L85 PathProgramCache]: Analyzing trace with hash -527648172, now seen corresponding path program 1 times [2023-12-02 16:17:45,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:17:45,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072352946] [2023-12-02 16:17:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:45,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:17:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:17:48,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:17:48,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:17:48,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072352946] [2023-12-02 16:17:48,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072352946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:17:48,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:17:48,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:17:48,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49999068] [2023-12-02 16:17:48,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:17:48,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:17:48,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:17:48,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:17:48,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:17:48,632 INFO L87 Difference]: Start difference. First operand 184433 states and 268411 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 16:17:51,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:17:55,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:17:57,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:17:59,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:18:01,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:18:04,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:18:07,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:18:09,760 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 [] [2023-12-02 16:18:33,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:18:33,890 INFO L93 Difference]: Finished difference Result 548885 states and 798423 transitions. [2023-12-02 16:18:33,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:18:33,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2023-12-02 16:18:33,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:18:35,433 INFO L225 Difference]: With dead ends: 548885 [2023-12-02 16:18:35,433 INFO L226 Difference]: Without dead ends: 364455 [2023-12-02 16:18:36,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:18:36,243 INFO L413 NwaCegarLoop]: 5536 mSDtfsCounter, 3398 mSDsluCounter, 3332 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 4 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3398 SdHoareTripleChecker+Valid, 8868 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:18:36,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3398 Valid, 8868 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 841 Invalid, 7 Unknown, 0 Unchecked, 21.6s Time] [2023-12-02 16:18:36,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364455 states. [2023-12-02 16:19:09,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364455 to 364409. [2023-12-02 16:19:09,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364409 states, 224054 states have (on average 1.2801824560150679) internal successors, (286830), 226061 states have internal predecessors, (286830), 117202 states have call successors, (117202), 24052 states have call predecessors, (117202), 23152 states have return successors, (125907), 115255 states have call predecessors, (125907), 117187 states have call successors, (125907) [2023-12-02 16:19:12,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364409 states to 364409 states and 529939 transitions. [2023-12-02 16:19:12,304 INFO L78 Accepts]: Start accepts. Automaton has 364409 states and 529939 transitions. Word has length 89 [2023-12-02 16:19:12,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:19:12,305 INFO L495 AbstractCegarLoop]: Abstraction has 364409 states and 529939 transitions. [2023-12-02 16:19:12,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 16:19:12,305 INFO L276 IsEmpty]: Start isEmpty. Operand 364409 states and 529939 transitions. [2023-12-02 16:19:12,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 16:19:12,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:19:12,309 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:19:12,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 16:19:12,310 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:19:12,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:19:12,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1444870161, now seen corresponding path program 1 times [2023-12-02 16:19:12,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:19:12,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254860151] [2023-12-02 16:19:12,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:19:12,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:19:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:19:15,686 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-02 16:19:15,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:19:15,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254860151] [2023-12-02 16:19:15,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254860151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:19:15,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:19:15,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:19:15,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163397728] [2023-12-02 16:19:15,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:19:15,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:19:15,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:19:15,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:19:15,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:19:15,688 INFO L87 Difference]: Start difference. First operand 364409 states and 529939 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 16:19:18,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:19:20,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:19:23,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:19:27,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 16:19:33,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:19:35,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:19:41,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []