./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--tm6000--tm6000.ko-main.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_f7c4c1d1-689c-4253-a541-33ac992519b6/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c4c1d1-689c-4253-a541-33ac992519b6/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_f7c4c1d1-689c-4253-a541-33ac992519b6/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c4c1d1-689c-4253-a541-33ac992519b6/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--tm6000--tm6000.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c4c1d1-689c-4253-a541-33ac992519b6/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_f7c4c1d1-689c-4253-a541-33ac992519b6/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 b564768d6fe8e9d0c65c5c6edb316b5cad2913c27de7b2cea9d901df1fef7d33 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:22:07,291 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:22:07,357 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c4c1d1-689c-4253-a541-33ac992519b6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 12:22:07,361 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:22:07,362 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:22:07,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:22:07,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:22:07,394 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:22:07,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:22:07,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:22:07,396 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:22:07,396 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:22:07,397 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:22:07,397 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:22:07,398 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:22:07,398 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:22:07,399 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:22:07,399 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:22:07,400 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:22:07,400 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:22:07,401 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:22:07,402 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:22:07,403 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:22:07,403 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:22:07,403 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:22:07,411 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:22:07,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:22:07,412 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:22:07,412 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:22:07,413 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:22:07,413 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:22:07,414 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:22:07,414 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:22:07,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:22:07,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:22:07,415 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:22:07,415 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:22:07,415 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:22:07,415 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:22:07,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:22:07,416 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:22:07,416 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:22:07,416 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:22:07,416 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:22:07,416 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_f7c4c1d1-689c-4253-a541-33ac992519b6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c4c1d1-689c-4253-a541-33ac992519b6/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b564768d6fe8e9d0c65c5c6edb316b5cad2913c27de7b2cea9d901df1fef7d33 [2023-12-02 12:22:07,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:22:07,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:22:07,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:22:07,652 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:22:07,653 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:22:07,654 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c4c1d1-689c-4253-a541-33ac992519b6/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--tm6000--tm6000.ko-main.cil.out.i [2023-12-02 12:22:10,401 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:22:10,964 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:22:10,964 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c4c1d1-689c-4253-a541-33ac992519b6/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--tm6000--tm6000.ko-main.cil.out.i [2023-12-02 12:22:11,022 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c4c1d1-689c-4253-a541-33ac992519b6/bin/utaipan-verify-nQ1chXbOIh/data/ad55da7eb/6c38ef7499934387ba889d81a009d2cf/FLAG5332c358c [2023-12-02 12:22:11,037 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c4c1d1-689c-4253-a541-33ac992519b6/bin/utaipan-verify-nQ1chXbOIh/data/ad55da7eb/6c38ef7499934387ba889d81a009d2cf [2023-12-02 12:22:11,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:22:11,041 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:22:11,043 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:22:11,043 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:22:11,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:22:11,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:22:11" (1/1) ... [2023-12-02 12:22:11,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be4c087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:11, skipping insertion in model container [2023-12-02 12:22:11,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:22:11" (1/1) ... [2023-12-02 12:22:11,291 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:22:14,145 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_f7c4c1d1-689c-4253-a541-33ac992519b6/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--tm6000--tm6000.ko-main.cil.out.i[425156,425169] [2023-12-02 12:22:14,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:22:14,508 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:22:14,619 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"); [5920] [2023-12-02 12:22:14,621 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)); [5927] [2023-12-02 12:22:14,793 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& kernel_stack)); [9205] [2023-12-02 12:22:14,794 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [9208] [2023-12-02 12:22:14,794 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [9211] [2023-12-02 12:22:14,794 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [9214] [2023-12-02 12:22:14,826 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/zakharov_benchmarks/bench/cpa/work/current--X--drivers/media/usb/tm6000/tm6000.ko--X--x1linux-3.8-rc1--X--32_7a--X--cpachecker/linux-3.8-rc1/csd_deg_dscv/17/dscv_tempdir/dscv/ri/32_7a/drivers/media/usb/tm6000/tm6000-video.c.prepared"), "i" (808), "i" (12UL)); [10186-10187] [2023-12-02 12:22:14,827 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/zakharov_benchmarks/bench/cpa/work/current--X--drivers/media/usb/tm6000/tm6000.ko--X--x1linux-3.8-rc1--X--32_7a--X--cpachecker/linux-3.8-rc1/csd_deg_dscv/17/dscv_tempdir/dscv/ri/32_7a/drivers/media/usb/tm6000/tm6000-video.c.prepared"), "i" (837), "i" (12UL)); [10221-10222] [2023-12-02 12:22:15,006 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_f7c4c1d1-689c-4253-a541-33ac992519b6/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--tm6000--tm6000.ko-main.cil.out.i[425156,425169] [2023-12-02 12:22:15,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:22:15,244 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:22:15,244 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:22:15,244 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:22:15,252 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:22:15,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:15 WrapperNode [2023-12-02 12:22:15,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:22:15,254 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:22:15,254 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:22:15,255 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:22:15,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:15" (1/1) ... [2023-12-02 12:22:15,485 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:15" (1/1) ... [2023-12-02 12:22:16,404 INFO L138 Inliner]: procedures = 449, calls = 7683, calls flagged for inlining = 185, calls inlined = 166, statements flattened = 13505 [2023-12-02 12:22:16,405 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:22:16,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:22:16,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:22:16,407 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:22:16,425 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:15" (1/1) ... [2023-12-02 12:22:16,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:15" (1/1) ... [2023-12-02 12:22:16,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:15" (1/1) ... [2023-12-02 12:22:16,795 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:15" (1/1) ... [2023-12-02 12:22:17,602 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:15" (1/1) ... [2023-12-02 12:22:17,630 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:15" (1/1) ... [2023-12-02 12:22:17,673 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:15" (1/1) ... [2023-12-02 12:22:17,699 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:15" (1/1) ... [2023-12-02 12:22:17,759 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:22:17,760 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:22:17,760 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:22:17,760 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:22:17,761 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:15" (1/1) ... [2023-12-02 12:22:17,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:22:17,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c4c1d1-689c-4253-a541-33ac992519b6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:22:17,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c4c1d1-689c-4253-a541-33ac992519b6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:22:17,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7c4c1d1-689c-4253-a541-33ac992519b6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:22:17,834 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-12-02 12:22:17,834 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-12-02 12:22:17,834 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2023-12-02 12:22:17,834 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2023-12-02 12:22:17,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tm6000_devlist_mutex [2023-12-02 12:22:17,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tm6000_devlist_mutex [2023-12-02 12:22:17,834 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2023-12-02 12:22:17,834 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2023-12-02 12:22:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 12:22:17,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 12:22:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure __tm6000_ir_int_stop [2023-12-02 12:22:17,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __tm6000_ir_int_stop [2023-12-02 12:22:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_i2c_register [2023-12-02 12:22:17,835 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_i2c_register [2023-12-02 12:22:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2023-12-02 12:22:17,836 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2023-12-02 12:22:17,836 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_mmap [2023-12-02 12:22:17,836 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_mmap [2023-12-02 12:22:17,836 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_set_reg_mask [2023-12-02 12:22:17,836 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_set_reg_mask [2023-12-02 12:22:17,836 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-12-02 12:22:17,837 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-12-02 12:22:17,837 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_ir_int_stop [2023-12-02 12:22:17,837 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_ir_int_stop [2023-12-02 12:22:17,837 INFO L130 BoogieDeclarations]: Found specification of procedure res_free [2023-12-02 12:22:17,837 INFO L138 BoogieDeclarations]: Found implementation of procedure res_free [2023-12-02 12:22:17,837 INFO L130 BoogieDeclarations]: Found specification of procedure vdev_init [2023-12-02 12:22:17,837 INFO L138 BoogieDeclarations]: Found implementation of procedure vdev_init [2023-12-02 12:22:17,838 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-12-02 12:22:17,838 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-12-02 12:22:17,838 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_ctrl [2023-12-02 12:22:17,838 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_ctrl [2023-12-02 12:22:17,838 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_ctrl [2023-12-02 12:22:17,838 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_ctrl [2023-12-02 12:22:17,838 INFO L130 BoogieDeclarations]: Found specification of procedure free_buffer [2023-12-02 12:22:17,838 INFO L138 BoogieDeclarations]: Found implementation of procedure free_buffer [2023-12-02 12:22:17,838 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_init_analog_mode [2023-12-02 12:22:17,838 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_init_analog_mode [2023-12-02 12:22:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-12-02 12:22:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 12:22:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-12-02 12:22:17,839 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-12-02 12:22:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_set_fourcc_format [2023-12-02 12:22:17,839 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_set_fourcc_format [2023-12-02 12:22:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_frequency [2023-12-02 12:22:17,839 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_frequency [2023-12-02 12:22:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2023-12-02 12:22:17,839 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2023-12-02 12:22:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 12:22:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_flash_led [2023-12-02 12:22:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_flash_led [2023-12-02 12:22:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_open [2023-12-02 12:22:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_open [2023-12-02 12:22:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-12-02 12:22:17,841 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-12-02 12:22:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 12:22:17,841 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 12:22:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~v4l2_std_id~0~TO~int [2023-12-02 12:22:17,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~v4l2_std_id~0~TO~int [2023-12-02 12:22:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_config_tuner [2023-12-02 12:22:17,842 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_config_tuner [2023-12-02 12:22:17,842 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2023-12-02 12:22:17,842 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2023-12-02 12:22:17,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 12:22:17,842 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_read_write_usb [2023-12-02 12:22:17,842 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_read_write_usb [2023-12-02 12:22:17,842 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_start_thread [2023-12-02 12:22:17,842 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_start_thread [2023-12-02 12:22:17,842 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-12-02 12:22:17,842 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-12-02 12:22:17,843 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2023-12-02 12:22:17,843 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2023-12-02 12:22:17,843 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_set_reg [2023-12-02 12:22:17,843 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_set_reg [2023-12-02 12:22:17,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 12:22:17,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 12:22:17,843 INFO L130 BoogieDeclarations]: Found specification of procedure get_max_endpoint [2023-12-02 12:22:17,844 INFO L138 BoogieDeclarations]: Found implementation of procedure get_max_endpoint [2023-12-02 12:22:17,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 12:22:17,844 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 12:22:17,844 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_i2c_recv_regs [2023-12-02 12:22:17,844 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_i2c_recv_regs [2023-12-02 12:22:17,844 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-12-02 12:22:17,844 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-12-02 12:22:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-12-02 12:22:17,845 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-12-02 12:22:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure video_unregister_device [2023-12-02 12:22:17,845 INFO L138 BoogieDeclarations]: Found implementation of procedure video_unregister_device [2023-12-02 12:22:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure radio_s_input [2023-12-02 12:22:17,845 INFO L138 BoogieDeclarations]: Found implementation of procedure radio_s_input [2023-12-02 12:22:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure __tm6000_open [2023-12-02 12:22:17,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __tm6000_open [2023-12-02 12:22:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 12:22:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:22:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 12:22:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-12-02 12:22:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_ir_int_start [2023-12-02 12:22:17,846 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_ir_int_start [2023-12-02 12:22:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-12-02 12:22:17,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-12-02 12:22:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_queue [2023-12-02 12:22:17,847 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_queue [2023-12-02 12:22:17,847 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-12-02 12:22:17,847 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-12-02 12:22:17,847 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_prepare [2023-12-02 12:22:17,847 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_prepare [2023-12-02 12:22:17,847 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2023-12-02 12:22:17,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2023-12-02 12:22:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-12-02 12:22:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-12-02 12:22:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure format_by_fourcc [2023-12-02 12:22:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure format_by_fourcc [2023-12-02 12:22:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2023-12-02 12:22:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2023-12-02 12:22:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_ir_change_protocol [2023-12-02 12:22:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_ir_change_protocol [2023-12-02 12:22:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:22:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:22:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_init_extension [2023-12-02 12:22:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_init_extension [2023-12-02 12:22:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-12-02 12:22:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-12-02 12:22:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-12-02 12:22:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-12-02 12:22:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_i2c_new_subdev [2023-12-02 12:22:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_i2c_new_subdev [2023-12-02 12:22:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 12:22:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 12:22:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_std [2023-12-02 12:22:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_std [2023-12-02 12:22:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2023-12-02 12:22:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2023-12-02 12:22:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_load_std [2023-12-02 12:22:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_load_std [2023-12-02 12:22:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2023-12-02 12:22:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2023-12-02 12:22:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2023-12-02 12:22:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2023-12-02 12:22:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 12:22:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 12:22:17,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 12:22:17,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 12:22:17,852 INFO L130 BoogieDeclarations]: Found specification of procedure res_get [2023-12-02 12:22:17,852 INFO L138 BoogieDeclarations]: Found implementation of procedure res_get [2023-12-02 12:22:17,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tm6000_core [2023-12-02 12:22:17,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tm6000_core [2023-12-02 12:22:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_poll [2023-12-02 12:22:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_poll [2023-12-02 12:22:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 12:22:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 12:22:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_frequency [2023-12-02 12:22:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_frequency [2023-12-02 12:22:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_tm6000_core [2023-12-02 12:22:17,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_tm6000_core [2023-12-02 12:22:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure usb_maxpacket [2023-12-02 12:22:17,854 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_maxpacket [2023-12-02 12:22:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-12-02 12:22:17,854 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-12-02 12:22:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 12:22:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 12:22:17,855 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 12:22:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 12:22:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2023-12-02 12:22:17,855 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2023-12-02 12:22:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-12-02 12:22:17,855 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-12-02 12:22:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 12:22:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 12:22:17,855 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 12:22:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2023-12-02 12:22:17,856 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2023-12-02 12:22:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-12-02 12:22:17,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-12-02 12:22:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-12-02 12:22:17,856 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-12-02 12:22:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-12-02 12:22:17,856 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-12-02 12:22:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-12-02 12:22:17,856 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-12-02 12:22:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-12-02 12:22:17,857 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-12-02 12:22:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-12-02 12:22:17,857 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-12-02 12:22:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure video_register_device [2023-12-02 12:22:17,857 INFO L138 BoogieDeclarations]: Found implementation of procedure video_register_device [2023-12-02 12:22:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_init_dev [2023-12-02 12:22:17,857 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_init_dev [2023-12-02 12:22:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-12-02 12:22:17,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-12-02 12:22:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_release [2023-12-02 12:22:17,857 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_release [2023-12-02 12:22:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 12:22:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 12:22:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure __tm6000_ir_int_start [2023-12-02 12:22:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __tm6000_ir_int_start [2023-12-02 12:22:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_get_reg [2023-12-02 12:22:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_get_reg [2023-12-02 12:22:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 12:22:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 12:22:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 12:22:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_usb_probe [2023-12-02 12:22:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_usb_probe [2023-12-02 12:22:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_input [2023-12-02 12:22:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_input [2023-12-02 12:22:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_get_std_res [2023-12-02 12:22:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_get_std_res [2023-12-02 12:22:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2023-12-02 12:22:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2023-12-02 12:22:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_i2c_xfer [2023-12-02 12:22:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_i2c_xfer [2023-12-02 12:22:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_setup [2023-12-02 12:22:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_setup [2023-12-02 12:22:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_prepare_isoc [2023-12-02 12:22:17,860 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_prepare_isoc [2023-12-02 12:22:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tm6000_devlist_mutex [2023-12-02 12:22:17,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tm6000_devlist_mutex [2023-12-02 12:22:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2023-12-02 12:22:17,860 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2023-12-02 12:22:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure fill_board_specific_data [2023-12-02 12:22:17,861 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_board_specific_data [2023-12-02 12:22:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-12-02 12:22:17,861 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-12-02 12:22:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure tm6000_uninit_isoc [2023-12-02 12:22:17,861 INFO L138 BoogieDeclarations]: Found implementation of procedure tm6000_uninit_isoc [2023-12-02 12:22:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 12:22:17,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 12:22:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:22:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tm6000_core [2023-12-02 12:22:17,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tm6000_core [2023-12-02 12:22:18,950 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:22:18,954 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:22:51,406 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:22:54,085 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:22:54,085 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-02 12:22:54,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:22:54 BoogieIcfgContainer [2023-12-02 12:22:54,088 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:22:54,090 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:22:54,090 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:22:54,094 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:22:54,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:22:11" (1/3) ... [2023-12-02 12:22:54,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60baa7d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:22:54, skipping insertion in model container [2023-12-02 12:22:54,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:15" (2/3) ... [2023-12-02 12:22:54,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60baa7d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:22:54, skipping insertion in model container [2023-12-02 12:22:54,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:22:54" (3/3) ... [2023-12-02 12:22:54,097 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--media--usb--tm6000--tm6000.ko-main.cil.out.i [2023-12-02 12:22:54,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:22:54,115 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 12:22:54,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:22:54,201 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;@7acf8fff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:22:54,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 12:22:54,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 2108 states, 1362 states have (on average 1.3575624082232012) internal successors, (1849), 1388 states have internal predecessors, (1849), 639 states have call successors, (639), 105 states have call predecessors, (639), 105 states have return successors, (639), 635 states have call predecessors, (639), 639 states have call successors, (639) [2023-12-02 12:22:54,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 12:22:54,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:22:54,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:22:54,232 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:22:54,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:22:54,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1276801577, now seen corresponding path program 1 times [2023-12-02 12:22:54,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:22:54,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413735066] [2023-12-02 12:22:54,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:54,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:23:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:23:03,590 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 12:23:03,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:23:03,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413735066] [2023-12-02 12:23:03,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413735066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:23:03,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:23:03,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:23:03,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957090460] [2023-12-02 12:23:03,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:23:03,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:23:03,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:23:03,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:23:03,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:23:03,635 INFO L87 Difference]: Start difference. First operand has 2108 states, 1362 states have (on average 1.3575624082232012) internal successors, (1849), 1388 states have internal predecessors, (1849), 639 states have call successors, (639), 105 states have call predecessors, (639), 105 states have return successors, (639), 635 states have call predecessors, (639), 639 states have call successors, (639) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:23:05,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:23:11,251 WARN L539 Checker$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 12:23:13,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:23:15,300 WARN L539 Checker$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 12:23:17,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:23:19,117 WARN L539 Checker$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 12:23:22,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:23:22,379 INFO L93 Difference]: Finished difference Result 6300 states and 9939 transitions. [2023-12-02 12:23:22,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:23:22,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-02 12:23:22,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:23:22,435 INFO L225 Difference]: With dead ends: 6300 [2023-12-02 12:23:22,435 INFO L226 Difference]: Without dead ends: 4187 [2023-12-02 12:23:22,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:23:22,466 INFO L413 NwaCegarLoop]: 2788 mSDtfsCounter, 3064 mSDsluCounter, 2784 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3064 SdHoareTripleChecker+Valid, 5572 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:23:22,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3064 Valid, 5572 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 640 Invalid, 5 Unknown, 0 Unchecked, 18.4s Time] [2023-12-02 12:23:22,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4187 states. [2023-12-02 12:23:22,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4187 to 4176. [2023-12-02 12:23:22,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4176 states, 2706 states have (on average 1.3521803399852181) internal successors, (3659), 2738 states have internal predecessors, (3659), 1261 states have call successors, (1261), 209 states have call predecessors, (1261), 208 states have return successors, (1244), 1236 states have call predecessors, (1244), 1244 states have call successors, (1244) [2023-12-02 12:23:22,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 6164 transitions. [2023-12-02 12:23:22,940 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 6164 transitions. Word has length 17 [2023-12-02 12:23:22,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:23:22,941 INFO L495 AbstractCegarLoop]: Abstraction has 4176 states and 6164 transitions. [2023-12-02 12:23:22,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:23:22,941 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 6164 transitions. [2023-12-02 12:23:22,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 12:23:22,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:23:22,945 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] [2023-12-02 12:23:22,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 12:23:22,946 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:23:22,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:23:22,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1535223198, now seen corresponding path program 1 times [2023-12-02 12:23:22,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:23:22,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169931671] [2023-12-02 12:23:22,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:23:22,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:23:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:23:31,693 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 12:23:31,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:23:31,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169931671] [2023-12-02 12:23:31,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169931671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:23:31,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:23:31,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:23:31,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459845374] [2023-12-02 12:23:31,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:23:31,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:23:31,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:23:31,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:23:31,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:23:31,696 INFO L87 Difference]: Start difference. First operand 4176 states and 6164 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:23:33,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:23:40,059 WARN L539 Checker$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 12:23:42,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:23:44,099 WARN L539 Checker$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 12:23:45,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:23:47,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:23:51,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:23:51,171 INFO L93 Difference]: Finished difference Result 10302 states and 15178 transitions. [2023-12-02 12:23:51,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:23:51,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-02 12:23:51,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:23:51,220 INFO L225 Difference]: With dead ends: 10302 [2023-12-02 12:23:51,220 INFO L226 Difference]: Without dead ends: 6127 [2023-12-02 12:23:51,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:23:51,245 INFO L413 NwaCegarLoop]: 2817 mSDtfsCounter, 2966 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2966 SdHoareTripleChecker+Valid, 5569 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:23:51,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2966 Valid, 5569 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 666 Invalid, 4 Unknown, 0 Unchecked, 19.2s Time] [2023-12-02 12:23:51,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6127 states. [2023-12-02 12:23:51,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6127 to 6099. [2023-12-02 12:23:51,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6099 states, 3933 states have (on average 1.3440122044241036) internal successors, (5286), 3973 states have internal predecessors, (5286), 1855 states have call successors, (1855), 311 states have call predecessors, (1855), 310 states have return successors, (1838), 1826 states have call predecessors, (1838), 1838 states have call successors, (1838) [2023-12-02 12:23:51,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6099 states to 6099 states and 8979 transitions. [2023-12-02 12:23:51,709 INFO L78 Accepts]: Start accepts. Automaton has 6099 states and 8979 transitions. Word has length 21 [2023-12-02 12:23:51,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:23:51,710 INFO L495 AbstractCegarLoop]: Abstraction has 6099 states and 8979 transitions. [2023-12-02 12:23:51,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:23:51,710 INFO L276 IsEmpty]: Start isEmpty. Operand 6099 states and 8979 transitions. [2023-12-02 12:23:51,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:23:51,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:23:51,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:23:51,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 12:23:51,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:23:51,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:23:51,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1325938460, now seen corresponding path program 1 times [2023-12-02 12:23:51,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:23:51,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028735078] [2023-12-02 12:23:51,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:23:51,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:23:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:24:00,234 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 12:24:00,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:24:00,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028735078] [2023-12-02 12:24:00,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028735078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:24:00,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:24:00,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:24:00,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845247729] [2023-12-02 12:24:00,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:24:00,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:24:00,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:24:00,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:24:00,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:24:00,237 INFO L87 Difference]: Start difference. First operand 6099 states and 8979 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:24:02,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:24:06,491 WARN L539 Checker$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 12:24:09,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:24:09,278 INFO L93 Difference]: Finished difference Result 6101 states and 8980 transitions. [2023-12-02 12:24:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:24:09,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 12:24:09,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:24:09,314 INFO L225 Difference]: With dead ends: 6101 [2023-12-02 12:24:09,314 INFO L226 Difference]: Without dead ends: 6098 [2023-12-02 12:24:09,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:24:09,317 INFO L413 NwaCegarLoop]: 2781 mSDtfsCounter, 3084 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3084 SdHoareTripleChecker+Valid, 2781 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-02 12:24:09,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3084 Valid, 2781 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 317 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2023-12-02 12:24:09,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6098 states. [2023-12-02 12:24:09,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6098 to 6098. [2023-12-02 12:24:09,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6098 states, 3933 states have (on average 1.3437579455886093) internal successors, (5285), 3972 states have internal predecessors, (5285), 1854 states have call successors, (1854), 311 states have call predecessors, (1854), 310 states have return successors, (1838), 1826 states have call predecessors, (1838), 1838 states have call successors, (1838) [2023-12-02 12:24:09,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6098 states to 6098 states and 8977 transitions. [2023-12-02 12:24:09,790 INFO L78 Accepts]: Start accepts. Automaton has 6098 states and 8977 transitions. Word has length 19 [2023-12-02 12:24:09,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:24:09,791 INFO L495 AbstractCegarLoop]: Abstraction has 6098 states and 8977 transitions. [2023-12-02 12:24:09,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:24:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 6098 states and 8977 transitions. [2023-12-02 12:24:09,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 12:24:09,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:24:09,793 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] [2023-12-02 12:24:09,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 12:24:09,794 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:24:09,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:24:09,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1237350893, now seen corresponding path program 1 times [2023-12-02 12:24:09,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:24:09,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054947103] [2023-12-02 12:24:09,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:24:09,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:24:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:24:18,333 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 12:24:18,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:24:18,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054947103] [2023-12-02 12:24:18,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054947103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:24:18,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:24:18,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:24:18,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485940992] [2023-12-02 12:24:18,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:24:18,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:24:18,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:24:18,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:24:18,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:24:18,336 INFO L87 Difference]: Start difference. First operand 6098 states and 8977 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 12:24:20,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:24:26,990 WARN L539 Checker$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 12:24:29,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:24:31,045 WARN L539 Checker$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 12:24:32,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:24:37,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:24:37,065 INFO L93 Difference]: Finished difference Result 16245 states and 23909 transitions. [2023-12-02 12:24:37,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:24:37,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-12-02 12:24:37,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:24:37,137 INFO L225 Difference]: With dead ends: 16245 [2023-12-02 12:24:37,137 INFO L226 Difference]: Without dead ends: 10148 [2023-12-02 12:24:37,162 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 12:24:37,163 INFO L413 NwaCegarLoop]: 2925 mSDtfsCounter, 3063 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3063 SdHoareTripleChecker+Valid, 5694 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:24:37,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3063 Valid, 5694 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 660 Invalid, 4 Unknown, 0 Unchecked, 18.3s Time] [2023-12-02 12:24:37,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10148 states. [2023-12-02 12:24:37,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10148 to 10121. [2023-12-02 12:24:37,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10121 states, 6531 states have (on average 1.3428265196753943) internal successors, (8770), 6586 states have internal predecessors, (8770), 3072 states have call successors, (3072), 518 states have call predecessors, (3072), 517 states have return successors, (3056), 3036 states have call predecessors, (3056), 3056 states have call successors, (3056) [2023-12-02 12:24:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10121 states to 10121 states and 14898 transitions. [2023-12-02 12:24:37,814 INFO L78 Accepts]: Start accepts. Automaton has 10121 states and 14898 transitions. Word has length 22 [2023-12-02 12:24:37,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:24:37,814 INFO L495 AbstractCegarLoop]: Abstraction has 10121 states and 14898 transitions. [2023-12-02 12:24:37,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 12:24:37,815 INFO L276 IsEmpty]: Start isEmpty. Operand 10121 states and 14898 transitions. [2023-12-02 12:24:37,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 12:24:37,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:24:37,816 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] [2023-12-02 12:24:37,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 12:24:37,817 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:24:37,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:24:37,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1322393585, now seen corresponding path program 1 times [2023-12-02 12:24:37,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:24:37,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443692642] [2023-12-02 12:24:37,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:24:37,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:24:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:24:45,243 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 12:24:45,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:24:45,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443692642] [2023-12-02 12:24:45,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443692642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:24:45,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:24:45,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:24:45,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778074913] [2023-12-02 12:24:45,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:24:45,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:24:45,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:24:45,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:24:45,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:24:45,247 INFO L87 Difference]: Start difference. First operand 10121 states and 14898 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:24:47,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:24:54,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:24:56,344 WARN L539 Checker$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 12:24:58,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:25:00,119 WARN L539 Checker$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 12:25:03,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:25:03,959 INFO L93 Difference]: Finished difference Result 27239 states and 40003 transitions. [2023-12-02 12:25:03,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:25:03,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-02 12:25:03,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:25:04,046 INFO L225 Difference]: With dead ends: 27239 [2023-12-02 12:25:04,046 INFO L226 Difference]: Without dead ends: 17119 [2023-12-02 12:25:04,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:25:04,091 INFO L413 NwaCegarLoop]: 3554 mSDtfsCounter, 2828 mSDsluCounter, 2733 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2828 SdHoareTripleChecker+Valid, 6287 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:25:04,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2828 Valid, 6287 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 761 Invalid, 4 Unknown, 0 Unchecked, 18.0s Time] [2023-12-02 12:25:04,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17119 states. [2023-12-02 12:25:05,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17119 to 17092. [2023-12-02 12:25:05,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17092 states, 10919 states have (on average 1.3300668559391886) internal successors, (14523), 11006 states have internal predecessors, (14523), 5281 states have call successors, (5281), 892 states have call predecessors, (5281), 891 states have return successors, (5265), 5229 states have call predecessors, (5265), 5265 states have call successors, (5265) [2023-12-02 12:25:05,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17092 states to 17092 states and 25069 transitions. [2023-12-02 12:25:05,112 INFO L78 Accepts]: Start accepts. Automaton has 17092 states and 25069 transitions. Word has length 23 [2023-12-02 12:25:05,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:25:05,112 INFO L495 AbstractCegarLoop]: Abstraction has 17092 states and 25069 transitions. [2023-12-02 12:25:05,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:25:05,113 INFO L276 IsEmpty]: Start isEmpty. Operand 17092 states and 25069 transitions. [2023-12-02 12:25:05,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 12:25:05,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:25:05,114 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] [2023-12-02 12:25:05,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 12:25:05,114 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:25:05,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:25:05,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1844436338, now seen corresponding path program 1 times [2023-12-02 12:25:05,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:25:05,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085099201] [2023-12-02 12:25:05,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:25:05,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:25:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:25:12,729 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 12:25:12,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:25:12,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085099201] [2023-12-02 12:25:12,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085099201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:25:12,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:25:12,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:25:12,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876438738] [2023-12-02 12:25:12,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:25:12,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:25:12,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:25:12,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:25:12,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:25:12,732 INFO L87 Difference]: Start difference. First operand 17092 states and 25069 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:25:14,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:25:19,162 WARN L539 Checker$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 12:25:21,197 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 12:25:22,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:25:22,958 INFO L93 Difference]: Finished difference Result 17094 states and 25070 transitions. [2023-12-02 12:25:22,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:25:22,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-02 12:25:22,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:25:23,019 INFO L225 Difference]: With dead ends: 17094 [2023-12-02 12:25:23,019 INFO L226 Difference]: Without dead ends: 17091 [2023-12-02 12:25:23,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:25:23,025 INFO L413 NwaCegarLoop]: 2779 mSDtfsCounter, 3081 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3081 SdHoareTripleChecker+Valid, 2779 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:25:23,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3081 Valid, 2779 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 316 Invalid, 3 Unknown, 0 Unchecked, 9.7s Time] [2023-12-02 12:25:23,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17091 states. [2023-12-02 12:25:24,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17091 to 17091. [2023-12-02 12:25:24,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17091 states, 10919 states have (on average 1.329975272460848) internal successors, (14522), 11005 states have internal predecessors, (14522), 5280 states have call successors, (5280), 892 states have call predecessors, (5280), 891 states have return successors, (5265), 5229 states have call predecessors, (5265), 5265 states have call successors, (5265) [2023-12-02 12:25:24,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17091 states to 17091 states and 25067 transitions. [2023-12-02 12:25:24,131 INFO L78 Accepts]: Start accepts. Automaton has 17091 states and 25067 transitions. Word has length 20 [2023-12-02 12:25:24,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:25:24,132 INFO L495 AbstractCegarLoop]: Abstraction has 17091 states and 25067 transitions. [2023-12-02 12:25:24,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:25:24,132 INFO L276 IsEmpty]: Start isEmpty. Operand 17091 states and 25067 transitions. [2023-12-02 12:25:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 12:25:24,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:25:24,133 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] [2023-12-02 12:25:24,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 12:25:24,134 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:25:24,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:25:24,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1341812135, now seen corresponding path program 1 times [2023-12-02 12:25:24,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:25:24,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040991855] [2023-12-02 12:25:24,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:25:24,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:25:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:25:31,811 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 12:25:31,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:25:31,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040991855] [2023-12-02 12:25:31,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040991855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:25:31,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:25:31,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:25:31,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399502769] [2023-12-02 12:25:31,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:25:31,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:25:31,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:25:31,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:25:31,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:25:31,814 INFO L87 Difference]: Start difference. First operand 17091 states and 25067 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:25:34,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:25:40,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:25:42,980 WARN L539 Checker$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 12:25:44,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:25:46,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:25:47,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:25:52,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:25:52,248 INFO L93 Difference]: Finished difference Result 49134 states and 72893 transitions. [2023-12-02 12:25:52,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:25:52,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-02 12:25:52,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:25:52,404 INFO L225 Difference]: With dead ends: 49134 [2023-12-02 12:25:52,404 INFO L226 Difference]: Without dead ends: 32044 [2023-12-02 12:25:52,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:25:52,470 INFO L413 NwaCegarLoop]: 3306 mSDtfsCounter, 2787 mSDsluCounter, 2749 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2787 SdHoareTripleChecker+Valid, 6055 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:25:52,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2787 Valid, 6055 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 667 Invalid, 3 Unknown, 0 Unchecked, 19.0s Time] [2023-12-02 12:25:52,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32044 states. [2023-12-02 12:25:54,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32044 to 31987. [2023-12-02 12:25:54,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31987 states, 20498 states have (on average 1.3319348229095522) internal successors, (27302), 20696 states have internal predecessors, (27302), 9786 states have call successors, (9786), 1740 states have call predecessors, (9786), 1702 states have return successors, (10212), 9613 states have call predecessors, (10212), 9769 states have call successors, (10212) [2023-12-02 12:25:55,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31987 states to 31987 states and 47300 transitions. [2023-12-02 12:25:55,057 INFO L78 Accepts]: Start accepts. Automaton has 31987 states and 47300 transitions. Word has length 21 [2023-12-02 12:25:55,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:25:55,058 INFO L495 AbstractCegarLoop]: Abstraction has 31987 states and 47300 transitions. [2023-12-02 12:25:55,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:25:55,058 INFO L276 IsEmpty]: Start isEmpty. Operand 31987 states and 47300 transitions. [2023-12-02 12:25:55,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 12:25:55,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:25:55,060 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] [2023-12-02 12:25:55,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 12:25:55,060 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:25:55,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:25:55,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1354631403, now seen corresponding path program 1 times [2023-12-02 12:25:55,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:25:55,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037545149] [2023-12-02 12:25:55,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:25:55,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:26:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:26:03,395 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 12:26:03,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:26:03,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037545149] [2023-12-02 12:26:03,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037545149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:26:03,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:26:03,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:26:03,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473110747] [2023-12-02 12:26:03,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:26:03,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:26:03,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:26:03,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:26:03,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:26:03,396 INFO L87 Difference]: Start difference. First operand 31987 states and 47300 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:26:05,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:26:11,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:26:13,465 WARN L539 Checker$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 12:26:15,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:26:17,786 WARN L539 Checker$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 12:26:19,794 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 12:26:23,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:26:23,521 INFO L93 Difference]: Finished difference Result 85617 states and 126937 transitions. [2023-12-02 12:26:23,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:26:23,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-02 12:26:23,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:26:23,719 INFO L225 Difference]: With dead ends: 85617 [2023-12-02 12:26:23,719 INFO L226 Difference]: Without dead ends: 53631 [2023-12-02 12:26:23,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:26:23,835 INFO L413 NwaCegarLoop]: 3324 mSDtfsCounter, 3017 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3017 SdHoareTripleChecker+Valid, 5143 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:26:23,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3017 Valid, 5143 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 552 Invalid, 4 Unknown, 0 Unchecked, 17.7s Time] [2023-12-02 12:26:23,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53631 states. [2023-12-02 12:26:27,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53631 to 53545. [2023-12-02 12:26:27,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53545 states, 33587 states have (on average 1.3052371453240836) internal successors, (43839), 33883 states have internal predecessors, (43839), 16913 states have call successors, (16913), 3117 states have call predecessors, (16913), 3044 states have return successors, (17817), 16634 states have call predecessors, (17817), 16897 states have call successors, (17817) [2023-12-02 12:26:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53545 states to 53545 states and 78569 transitions. [2023-12-02 12:26:27,521 INFO L78 Accepts]: Start accepts. Automaton has 53545 states and 78569 transitions. Word has length 22 [2023-12-02 12:26:27,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:26:27,522 INFO L495 AbstractCegarLoop]: Abstraction has 53545 states and 78569 transitions. [2023-12-02 12:26:27,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:26:27,522 INFO L276 IsEmpty]: Start isEmpty. Operand 53545 states and 78569 transitions. [2023-12-02 12:26:27,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 12:26:27,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:26:27,524 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] [2023-12-02 12:26:27,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 12:26:27,524 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:26:27,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:26:27,524 INFO L85 PathProgramCache]: Analyzing trace with hash 954969706, now seen corresponding path program 1 times [2023-12-02 12:26:27,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:26:27,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779989090] [2023-12-02 12:26:27,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:26:27,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:26:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:26:34,875 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 12:26:34,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:26:34,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779989090] [2023-12-02 12:26:34,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779989090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:26:34,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:26:34,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:26:34,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188375870] [2023-12-02 12:26:34,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:26:34,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:26:34,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:26:34,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:26:34,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:26:34,877 INFO L87 Difference]: Start difference. First operand 53545 states and 78569 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:26:37,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:26:39,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 12:26:43,907 WARN L539 Checker$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 12:26:47,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:26:47,297 INFO L93 Difference]: Finished difference Result 53547 states and 78570 transitions. [2023-12-02 12:26:47,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:26:47,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-02 12:26:47,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:26:47,427 INFO L225 Difference]: With dead ends: 53547 [2023-12-02 12:26:47,428 INFO L226 Difference]: Without dead ends: 53544 [2023-12-02 12:26:47,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:26:47,439 INFO L413 NwaCegarLoop]: 2775 mSDtfsCounter, 3074 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3074 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:26:47,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3074 Valid, 2775 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 316 Invalid, 3 Unknown, 0 Unchecked, 10.5s Time] [2023-12-02 12:26:47,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53544 states. [2023-12-02 12:26:50,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53544 to 53544. [2023-12-02 12:26:50,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53544 states, 33587 states have (on average 1.3052073718998423) internal successors, (43838), 33882 states have internal predecessors, (43838), 16912 states have call successors, (16912), 3117 states have call predecessors, (16912), 3044 states have return successors, (17817), 16634 states have call predecessors, (17817), 16897 states have call successors, (17817) [2023-12-02 12:26:51,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53544 states to 53544 states and 78567 transitions. [2023-12-02 12:26:51,070 INFO L78 Accepts]: Start accepts. Automaton has 53544 states and 78567 transitions. Word has length 23 [2023-12-02 12:26:51,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:26:51,070 INFO L495 AbstractCegarLoop]: Abstraction has 53544 states and 78567 transitions. [2023-12-02 12:26:51,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:26:51,070 INFO L276 IsEmpty]: Start isEmpty. Operand 53544 states and 78567 transitions. [2023-12-02 12:26:51,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 12:26:51,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:26:51,072 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] [2023-12-02 12:26:51,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 12:26:51,072 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:26:51,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:26:51,072 INFO L85 PathProgramCache]: Analyzing trace with hash -334920902, now seen corresponding path program 1 times [2023-12-02 12:26:51,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:26:51,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177494926] [2023-12-02 12:26:51,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:26:51,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:26:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:26:58,597 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 12:26:58,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:26:58,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177494926] [2023-12-02 12:26:58,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177494926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:26:58,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:26:58,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:26:58,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691440193] [2023-12-02 12:26:58,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:26:58,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:26:58,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:26:58,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:26:58,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:26:58,599 INFO L87 Difference]: Start difference. First operand 53544 states and 78567 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:27:00,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:27:08,872 WARN L539 Checker$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 12:27:11,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:27:13,113 WARN L539 Checker$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 12:27:15,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:27:20,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:27:20,923 INFO L93 Difference]: Finished difference Result 153644 states and 225403 transitions. [2023-12-02 12:27:20,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:27:20,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-02 12:27:20,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:27:21,209 INFO L225 Difference]: With dead ends: 153644 [2023-12-02 12:27:21,209 INFO L226 Difference]: Without dead ends: 100101 [2023-12-02 12:27:21,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:27:21,487 INFO L413 NwaCegarLoop]: 3573 mSDtfsCounter, 2969 mSDsluCounter, 2771 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2969 SdHoareTripleChecker+Valid, 6344 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:27:21,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2969 Valid, 6344 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 730 Invalid, 4 Unknown, 0 Unchecked, 18.0s Time] [2023-12-02 12:27:21,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100101 states. [2023-12-02 12:27:28,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100101 to 100065. [2023-12-02 12:27:28,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100065 states, 62626 states have (on average 1.3037077252259446) internal successors, (81646), 63173 states have internal predecessors, (81646), 31699 states have call successors, (31699), 5876 states have call predecessors, (31699), 5739 states have return successors, (33436), 31185 states have call predecessors, (33436), 31684 states have call successors, (33436) [2023-12-02 12:27:28,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100065 states to 100065 states and 146781 transitions. [2023-12-02 12:27:28,580 INFO L78 Accepts]: Start accepts. Automaton has 100065 states and 146781 transitions. Word has length 25 [2023-12-02 12:27:28,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:27:28,580 INFO L495 AbstractCegarLoop]: Abstraction has 100065 states and 146781 transitions. [2023-12-02 12:27:28,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:27:28,580 INFO L276 IsEmpty]: Start isEmpty. Operand 100065 states and 146781 transitions. [2023-12-02 12:27:28,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 12:27:28,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:27:28,581 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] [2023-12-02 12:27:28,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 12:27:28,581 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:27:28,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:27:28,582 INFO L85 PathProgramCache]: Analyzing trace with hash -461835080, now seen corresponding path program 1 times [2023-12-02 12:27:28,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:27:28,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477952146] [2023-12-02 12:27:28,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:27:28,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:27:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:27:36,249 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 12:27:36,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:27:36,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477952146] [2023-12-02 12:27:36,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477952146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:27:36,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:27:36,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:27:36,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767091970] [2023-12-02 12:27:36,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:27:36,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:27:36,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:27:36,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:27:36,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:27:36,251 INFO L87 Difference]: Start difference. First operand 100065 states and 146781 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:27:38,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:27:43,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:27:46,311 WARN L539 Checker$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 12:27:47,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:27:52,475 WARN L539 Checker$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 12:27:54,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:28:00,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:28:00,184 INFO L93 Difference]: Finished difference Result 250430 states and 367723 transitions. [2023-12-02 12:28:00,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:28:00,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-02 12:28:00,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:28:00,877 INFO L225 Difference]: With dead ends: 250430 [2023-12-02 12:28:00,877 INFO L226 Difference]: Without dead ends: 150366 [2023-12-02 12:28:01,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:28:01,347 INFO L413 NwaCegarLoop]: 2900 mSDtfsCounter, 3043 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 4668 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:28:01,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 4668 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 532 Invalid, 4 Unknown, 0 Unchecked, 16.4s Time] [2023-12-02 12:28:01,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150366 states. [2023-12-02 12:28:12,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150366 to 150152. [2023-12-02 12:28:12,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150152 states, 93060 states have (on average 1.28749194068343) internal successors, (119814), 93794 states have internal predecessors, (119814), 47799 states have call successors, (47799), 9583 states have call predecessors, (47799), 9292 states have return successors, (51388), 46995 states have call predecessors, (51388), 47783 states have call successors, (51388) [2023-12-02 12:28:14,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150152 states to 150152 states and 219001 transitions. [2023-12-02 12:28:14,049 INFO L78 Accepts]: Start accepts. Automaton has 150152 states and 219001 transitions. Word has length 24 [2023-12-02 12:28:14,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:28:14,049 INFO L495 AbstractCegarLoop]: Abstraction has 150152 states and 219001 transitions. [2023-12-02 12:28:14,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:28:14,050 INFO L276 IsEmpty]: Start isEmpty. Operand 150152 states and 219001 transitions. [2023-12-02 12:28:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 12:28:14,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:28:14,052 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] [2023-12-02 12:28:14,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 12:28:14,052 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:28:14,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:28:14,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1433105619, now seen corresponding path program 1 times [2023-12-02 12:28:14,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:28:14,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858721435] [2023-12-02 12:28:14,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:28:14,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:28:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:28:22,563 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 12:28:22,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:28:22,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858721435] [2023-12-02 12:28:22,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858721435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:28:22,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:28:22,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:28:22,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614175593] [2023-12-02 12:28:22,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:28:22,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:28:22,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:28:22,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:28:22,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:28:22,565 INFO L87 Difference]: Start difference. First operand 150152 states and 219001 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:28:24,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:28:32,685 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 12:28:38,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:28:38,933 INFO L93 Difference]: Finished difference Result 152022 states and 220392 transitions. [2023-12-02 12:28:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:28:38,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-02 12:28:38,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:28:39,531 INFO L225 Difference]: With dead ends: 152022 [2023-12-02 12:28:39,531 INFO L226 Difference]: Without dead ends: 152018 [2023-12-02 12:28:39,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:28:39,579 INFO L413 NwaCegarLoop]: 2770 mSDtfsCounter, 2974 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2974 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-02 12:28:39,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2974 Valid, 2858 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 343 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2023-12-02 12:28:39,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152018 states. [2023-12-02 12:28:51,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152018 to 152016. [2023-12-02 12:28:51,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152016 states, 94009 states have (on average 1.2838345264815072) internal successors, (120692), 94741 states have internal predecessors, (120692), 48001 states have call successors, (48001), 10296 states have call predecessors, (48001), 10005 states have return successors, (51592), 47199 states have call predecessors, (51592), 47987 states have call successors, (51592) [2023-12-02 12:28:52,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152016 states to 152016 states and 220285 transitions. [2023-12-02 12:28:52,605 INFO L78 Accepts]: Start accepts. Automaton has 152016 states and 220285 transitions. Word has length 25 [2023-12-02 12:28:52,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:28:52,605 INFO L495 AbstractCegarLoop]: Abstraction has 152016 states and 220285 transitions. [2023-12-02 12:28:52,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:28:52,606 INFO L276 IsEmpty]: Start isEmpty. Operand 152016 states and 220285 transitions. [2023-12-02 12:28:52,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 12:28:52,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:28:52,607 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] [2023-12-02 12:28:52,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 12:28:52,607 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:28:52,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:28:52,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1477716389, now seen corresponding path program 1 times [2023-12-02 12:28:52,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:28:52,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760041723] [2023-12-02 12:28:52,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:28:52,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:29:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:29:00,844 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 12:29:00,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:29:00,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760041723] [2023-12-02 12:29:00,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760041723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:29:00,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:29:00,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:29:00,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347289031] [2023-12-02 12:29:00,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:29:00,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:29:00,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:29:00,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:29:00,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:29:00,846 INFO L87 Difference]: Start difference. First operand 152016 states and 220285 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:29:03,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:29:10,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:29:17,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:29:18,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:29:18,498 INFO L93 Difference]: Finished difference Result 152018 states and 220286 transitions. [2023-12-02 12:29:18,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:29:18,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-02 12:29:18,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:29:18,957 INFO L225 Difference]: With dead ends: 152018 [2023-12-02 12:29:18,957 INFO L226 Difference]: Without dead ends: 152006 [2023-12-02 12:29:19,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:29:19,003 INFO L413 NwaCegarLoop]: 2768 mSDtfsCounter, 3063 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3063 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-12-02 12:29:19,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3063 Valid, 2768 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 316 Invalid, 2 Unknown, 0 Unchecked, 9.9s Time] [2023-12-02 12:29:19,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152006 states. [2023-12-02 12:29:31,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152006 to 152006. [2023-12-02 12:29:31,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152006 states, 94000 states have (on average 1.2836702127659574) internal successors, (120665), 94731 states have internal predecessors, (120665), 48000 states have call successors, (48000), 10296 states have call predecessors, (48000), 10005 states have return successors, (51592), 47199 states have call predecessors, (51592), 47987 states have call successors, (51592) [2023-12-02 12:29:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152006 states to 152006 states and 220257 transitions. [2023-12-02 12:29:32,581 INFO L78 Accepts]: Start accepts. Automaton has 152006 states and 220257 transitions. Word has length 26 [2023-12-02 12:29:32,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:29:32,581 INFO L495 AbstractCegarLoop]: Abstraction has 152006 states and 220257 transitions. [2023-12-02 12:29:32,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:29:32,581 INFO L276 IsEmpty]: Start isEmpty. Operand 152006 states and 220257 transitions. [2023-12-02 12:29:32,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 12:29:32,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:29:32,583 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 12:29:32,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 12:29:32,584 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:29:32,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:29:32,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1490843786, now seen corresponding path program 1 times [2023-12-02 12:29:32,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:29:32,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496772629] [2023-12-02 12:29:32,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:29:32,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:29:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:29:42,517 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 12:29:42,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:29:42,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496772629] [2023-12-02 12:29:42,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496772629] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:29:42,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:29:42,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:29:42,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418239458] [2023-12-02 12:29:42,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:29:42,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:29:42,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:29:42,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:29:42,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:29:42,520 INFO L87 Difference]: Start difference. First operand 152006 states and 220257 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 12:29:44,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:29:54,931 WARN L539 Checker$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 12:29:57,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:30:01,832 WARN L539 Checker$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 12:30:03,846 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 12:30:20,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:20,112 INFO L93 Difference]: Finished difference Result 446016 states and 645924 transitions. [2023-12-02 12:30:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:30:20,119 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), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2023-12-02 12:30:20,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:21,743 INFO L225 Difference]: With dead ends: 446016 [2023-12-02 12:30:21,743 INFO L226 Difference]: Without dead ends: 294011 [2023-12-02 12:30:22,528 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 12:30:22,528 INFO L413 NwaCegarLoop]: 4310 mSDtfsCounter, 2990 mSDsluCounter, 2735 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2990 SdHoareTripleChecker+Valid, 7045 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:22,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2990 Valid, 7045 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 820 Invalid, 4 Unknown, 0 Unchecked, 19.0s Time] [2023-12-02 12:30:22,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294011 states. [2023-12-02 12:30:46,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294011 to 293982. [2023-12-02 12:30:47,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293982 states, 181714 states have (on average 1.282146670041934) internal successors, (232984), 183057 states have internal predecessors, (232984), 92862 states have call successors, (92862), 19968 states have call predecessors, (92862), 19405 states have return successors, (99760), 91385 states have call predecessors, (99760), 92849 states have call successors, (99760) [2023-12-02 12:30:49,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293982 states to 293982 states and 425606 transitions. [2023-12-02 12:30:49,205 INFO L78 Accepts]: Start accepts. Automaton has 293982 states and 425606 transitions. Word has length 32 [2023-12-02 12:30:49,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:49,205 INFO L495 AbstractCegarLoop]: Abstraction has 293982 states and 425606 transitions. [2023-12-02 12:30:49,205 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), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 12:30:49,205 INFO L276 IsEmpty]: Start isEmpty. Operand 293982 states and 425606 transitions. [2023-12-02 12:30:49,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 12:30:49,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:49,219 INFO L195 NwaCegarLoop]: trace histogram [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 12:30:49,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 12:30:49,219 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:30:49,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:49,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1340853311, now seen corresponding path program 1 times [2023-12-02 12:30:49,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:49,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186571345] [2023-12-02 12:30:49,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:49,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:58,290 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:30:58,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:58,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186571345] [2023-12-02 12:30:58,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186571345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:30:58,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:30:58,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:30:58,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59466114] [2023-12-02 12:30:58,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:30:58,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:30:58,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:58,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:30:58,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:30:58,293 INFO L87 Difference]: Start difference. First operand 293982 states and 425606 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 12:31:00,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:31:02,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:31:04,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:31:07,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 12:31:16,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:31:18,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:31:23,394 WARN L539 Checker$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 12:31:25,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:31:27,419 WARN L539 Checker$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 12:31:32,513 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 12:32:01,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:32:01,574 INFO L93 Difference]: Finished difference Result 722307 states and 1045846 transitions. [2023-12-02 12:32:01,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:32:01,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2023-12-02 12:32:01,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:32:03,620 INFO L225 Difference]: With dead ends: 722307 [2023-12-02 12:32:03,620 INFO L226 Difference]: Without dead ends: 436628 [2023-12-02 12:32:05,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:32:05,050 INFO L413 NwaCegarLoop]: 3880 mSDtfsCounter, 4810 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 1261 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4810 SdHoareTripleChecker+Valid, 6610 SdHoareTripleChecker+Invalid, 2082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1261 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2023-12-02 12:32:05,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4810 Valid, 6610 Invalid, 2082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1261 Valid, 813 Invalid, 8 Unknown, 0 Unchecked, 32.9s Time] [2023-12-02 12:32:05,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436628 states. [2023-12-02 12:32:43,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436628 to 436590. [2023-12-02 12:32:44,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436590 states, 270014 states have (on average 1.2818742731858348) internal successors, (346124), 271973 states have internal predecessors, (346124), 137750 states have call successors, (137750), 29660 states have call predecessors, (137750), 28825 states have return successors, (147960), 135593 states have call predecessors, (147960), 137737 states have call successors, (147960) [2023-12-02 12:32:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436590 states to 436590 states and 631834 transitions. [2023-12-02 12:32:47,283 INFO L78 Accepts]: Start accepts. Automaton has 436590 states and 631834 transitions. Word has length 47 [2023-12-02 12:32:47,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:32:47,283 INFO L495 AbstractCegarLoop]: Abstraction has 436590 states and 631834 transitions. [2023-12-02 12:32:47,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 12:32:47,283 INFO L276 IsEmpty]: Start isEmpty. Operand 436590 states and 631834 transitions. [2023-12-02 12:32:47,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 12:32:47,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:32:47,292 INFO L195 NwaCegarLoop]: trace histogram [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 12:32:47,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 12:32:47,292 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:32:47,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:32:47,292 INFO L85 PathProgramCache]: Analyzing trace with hash 840609781, now seen corresponding path program 1 times [2023-12-02 12:32:47,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:32:47,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510087882] [2023-12-02 12:32:47,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:32:47,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms