./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--r8152.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/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_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--r8152.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/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_efca1f7a-1759-425c-aae8-6720d65fa7ff/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 985d0b4f5410b7b86e22865d3848eb73c5be61726c7bc3b3417d51bbad9e6359 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:48:57,883 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:48:57,947 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 12:48:57,951 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:48:57,952 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:48:57,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:48:57,975 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:48:57,976 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:48:57,977 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:48:57,977 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:48:57,978 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:48:57,978 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:48:57,979 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:48:57,979 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:48:57,980 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:48:57,980 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:48:57,981 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:48:57,981 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:48:57,982 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:48:57,982 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:48:57,983 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:48:57,985 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:48:57,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:48:57,986 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:48:57,986 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:48:57,987 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:48:57,987 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:48:57,988 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:48:57,988 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:48:57,988 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:48:57,989 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:48:57,989 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:48:57,989 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:48:57,990 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:48:57,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:48:57,990 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:48:57,990 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:48:57,991 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:48:57,991 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:48:57,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:48:57,991 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:48:57,991 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:48:57,992 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:48:57,992 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:48:57,992 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_efca1f7a-1759-425c-aae8-6720d65fa7ff/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 985d0b4f5410b7b86e22865d3848eb73c5be61726c7bc3b3417d51bbad9e6359 [2023-12-02 12:48:58,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:48:58,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:48:58,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:48:58,213 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:48:58,213 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:48:58,215 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--r8152.ko-entry_point.cil.out.i [2023-12-02 12:49:01,018 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:49:01,498 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:49:01,499 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--r8152.ko-entry_point.cil.out.i [2023-12-02 12:49:01,535 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/data/41013effe/62c3e554dabd4e0d9f81aceff0457338/FLAGf102c633b [2023-12-02 12:49:01,547 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/data/41013effe/62c3e554dabd4e0d9f81aceff0457338 [2023-12-02 12:49:01,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:49:01,550 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:49:01,552 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:49:01,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:49:01,556 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:49:01,556 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:49:01" (1/1) ... [2023-12-02 12:49:01,557 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635072dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:49:01, skipping insertion in model container [2023-12-02 12:49:01,557 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:49:01" (1/1) ... [2023-12-02 12:49:01,747 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:49:04,977 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_efca1f7a-1759-425c-aae8-6720d65fa7ff/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--r8152.ko-entry_point.cil.out.i[381757,381770] [2023-12-02 12:49:05,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:49:05,235 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:49:05,353 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"); [6570] [2023-12-02 12:49:05,355 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)); [6577] [2023-12-02 12:49:05,355 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 %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [6585-6586] [2023-12-02 12:49:05,356 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [6599] [2023-12-02 12:49:05,382 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 *)"include/linux/netdevice.h"), "i" (507), "i" (12UL)); [7441-7442] [2023-12-02 12:49:05,382 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7447] [2023-12-02 12:49:05,385 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%1,%0": "=q" (pfo_ret__): "m" (cpu_number)); [7597] [2023-12-02 12:49:05,385 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%1,%0": "=r" (pfo_ret__): "m" (cpu_number)); [7600] [2023-12-02 12:49:05,386 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%1,%0": "=r" (pfo_ret__): "m" (cpu_number)); [7603] [2023-12-02 12:49:05,386 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%1,%0": "=r" (pfo_ret__): "m" (cpu_number)); [7606] [2023-12-02 12:49:05,386 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%1,%0": "=q" (pfo_ret_____0): "m" (cpu_number)); [7617] [2023-12-02 12:49:05,386 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%1,%0": "=r" (pfo_ret_____0): "m" (cpu_number)); [7620] [2023-12-02 12:49:05,387 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%1,%0": "=r" (pfo_ret_____0): "m" (cpu_number)); [7623] [2023-12-02 12:49:05,387 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%1,%0": "=r" (pfo_ret_____0): "m" (cpu_number)); [7626] [2023-12-02 12:49:05,388 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%1,%0": "=q" (pfo_ret_____1): "m" (cpu_number)); [7637] [2023-12-02 12:49:05,388 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%1,%0": "=r" (pfo_ret_____1): "m" (cpu_number)); [7640] [2023-12-02 12:49:05,388 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%1,%0": "=r" (pfo_ret_____1): "m" (cpu_number)); [7643] [2023-12-02 12:49:05,389 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%1,%0": "=r" (pfo_ret_____1): "m" (cpu_number)); [7646] [2023-12-02 12:49:05,389 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%1,%0": "=q" (pfo_ret_____2): "m" (cpu_number)); [7657] [2023-12-02 12:49:05,389 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%1,%0": "=r" (pfo_ret_____2): "m" (cpu_number)); [7660] [2023-12-02 12:49:05,390 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%1,%0": "=r" (pfo_ret_____2): "m" (cpu_number)); [7663] [2023-12-02 12:49:05,390 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%1,%0": "=r" (pfo_ret_____2): "m" (cpu_number)); [7666] [2023-12-02 12:49:05,870 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_efca1f7a-1759-425c-aae8-6720d65fa7ff/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--r8152.ko-entry_point.cil.out.i[381757,381770] [2023-12-02 12:49:05,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:49:06,166 WARN L675 CHandler]: The function __bad_size_call_parameter is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:49:06,166 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:49:06,174 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:49:06,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:49:06 WrapperNode [2023-12-02 12:49:06,175 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:49:06,176 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:49:06,176 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:49:06,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:49:06,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:49:06" (1/1) ... [2023-12-02 12:49:06,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:49:06" (1/1) ... [2023-12-02 12:49:06,449 INFO L138 Inliner]: procedures = 504, calls = 2668, calls flagged for inlining = 222, calls inlined = 171, statements flattened = 6569 [2023-12-02 12:49:06,450 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:49:06,451 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:49:06,451 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:49:06,451 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:49:06,459 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:49:06" (1/1) ... [2023-12-02 12:49:06,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:49:06" (1/1) ... [2023-12-02 12:49:06,487 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:49:06" (1/1) ... [2023-12-02 12:49:06,488 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:49:06" (1/1) ... [2023-12-02 12:49:06,650 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:49:06" (1/1) ... [2023-12-02 12:49:06,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:49:06" (1/1) ... [2023-12-02 12:49:06,711 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:49:06" (1/1) ... [2023-12-02 12:49:06,729 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:49:06" (1/1) ... [2023-12-02 12:49:06,766 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:49:06,767 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:49:06,767 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:49:06,767 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:49:06,768 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:49:06" (1/1) ... [2023-12-02 12:49:06,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:49:06,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:49:06,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:49:06,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:49:06,837 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_set_settings [2023-12-02 12:49:06,837 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_set_settings [2023-12-02 12:49:06,837 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-12-02 12:49:06,837 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-12-02 12:49:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2023-12-02 12:49:06,838 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2023-12-02 12:49:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_write_byte [2023-12-02 12:49:06,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_write_byte [2023-12-02 12:49:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_work_func_t [2023-12-02 12:49:06,839 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_work_func_t [2023-12-02 12:49:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 12:49:06,839 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 12:49:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2023-12-02 12:49:06,839 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2023-12-02 12:49:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-12-02 12:49:06,840 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-12-02 12:49:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_get_settings [2023-12-02 12:49:06,840 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_get_settings [2023-12-02 12:49:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 12:49:06,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 12:49:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_rx_vlan_en [2023-12-02 12:49:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_rx_vlan_en [2023-12-02 12:49:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure r8152_mmd_write [2023-12-02 12:49:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152_mmd_write [2023-12-02 12:49:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_disconnect [2023-12-02 12:49:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_disconnect [2023-12-02 12:49:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2023-12-02 12:49:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2023-12-02 12:49:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure set_carrier [2023-12-02 12:49:06,842 INFO L138 BoogieDeclarations]: Found implementation of procedure set_carrier [2023-12-02 12:49:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2023-12-02 12:49:06,842 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2023-12-02 12:49:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_set_speed [2023-12-02 12:49:06,842 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_set_speed [2023-12-02 12:49:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2023-12-02 12:49:06,842 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2023-12-02 12:49:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure pla_ocp_read [2023-12-02 12:49:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure pla_ocp_read [2023-12-02 12:49:06,843 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2023-12-02 12:49:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2023-12-02 12:49:06,843 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2023-12-02 12:49:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2023-12-02 12:49:06,843 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-12-02 12:49:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-12-02 12:49:06,843 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_nic_reset [2023-12-02 12:49:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_nic_reset [2023-12-02 12:49:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure r8152_eee_en [2023-12-02 12:49:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152_eee_en [2023-12-02 12:49:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_reg_read [2023-12-02 12:49:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_reg_read [2023-12-02 12:49:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-12-02 12:49:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-12-02 12:49:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-12-02 12:49:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-12-02 12:49:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_set_eee_plus [2023-12-02 12:49:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_set_eee_plus [2023-12-02 12:49:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure r8153_disable_aldps [2023-12-02 12:49:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure r8153_disable_aldps [2023-12-02 12:49:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_write_dword [2023-12-02 12:49:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_write_dword [2023-12-02 12:49:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_adv_to_mmd_eee_adv_t [2023-12-02 12:49:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_adv_to_mmd_eee_adv_t [2023-12-02 12:49:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2023-12-02 12:49:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2023-12-02 12:49:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure pla_ocp_write [2023-12-02 12:49:06,846 INFO L138 BoogieDeclarations]: Found implementation of procedure pla_ocp_write [2023-12-02 12:49:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-12-02 12:49:06,846 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-12-02 12:49:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-12-02 12:49:06,846 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-12-02 12:49:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-12-02 12:49:06,846 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-12-02 12:49:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 12:49:06,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 12:49:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_get_speed [2023-12-02 12:49:06,847 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_get_speed [2023-12-02 12:49:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 12:49:06,847 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 12:49:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_read_dword [2023-12-02 12:49:06,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_read_dword [2023-12-02 12:49:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 12:49:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure r8152_mdio_write [2023-12-02 12:49:06,847 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152_mdio_write [2023-12-02 12:49:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2023-12-02 12:49:06,848 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2023-12-02 12:49:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure r8153_set_rx_early_timeout [2023-12-02 12:49:06,848 INFO L138 BoogieDeclarations]: Found implementation of procedure r8153_set_rx_early_timeout [2023-12-02 12:49:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 12:49:06,848 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 12:49:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure r8152_submit_rx [2023-12-02 12:49:06,848 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152_submit_rx [2023-12-02 12:49:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-12-02 12:49:06,849 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-12-02 12:49:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-12-02 12:49:06,849 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-12-02 12:49:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-12-02 12:49:06,849 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-12-02 12:49:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure r8152b_enable_fc [2023-12-02 12:49:06,849 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152b_enable_fc [2023-12-02 12:49:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 12:49:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_probe [2023-12-02 12:49:06,850 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_probe [2023-12-02 12:49:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-12-02 12:49:06,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-12-02 12:49:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 12:49:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2023-12-02 12:49:06,850 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2023-12-02 12:49:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 12:49:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 12:49:06,850 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 12:49:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_node [2023-12-02 12:49:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_node [2023-12-02 12:49:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2023-12-02 12:49:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2023-12-02 12:49:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_copy [2023-12-02 12:49:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_copy [2023-12-02 12:49:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-12-02 12:49:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-12-02 12:49:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_set_features [2023-12-02 12:49:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_set_features [2023-12-02 12:49:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-12-02 12:49:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-12-02 12:49:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure r8153_eee_en [2023-12-02 12:49:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure r8153_eee_en [2023-12-02 12:49:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_open [2023-12-02 12:49:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_open [2023-12-02 12:49:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2023-12-02 12:49:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2023-12-02 12:49:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2023-12-02 12:49:06,853 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2023-12-02 12:49:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_runtime_suspend_enable [2023-12-02 12:49:06,853 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_runtime_suspend_enable [2023-12-02 12:49:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-12-02 12:49:06,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-12-02 12:49:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure r8153_power_cut_en [2023-12-02 12:49:06,853 INFO L138 BoogieDeclarations]: Found implementation of procedure r8153_power_cut_en [2023-12-02 12:49:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure generic_ocp_read [2023-12-02 12:49:06,853 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_ocp_read [2023-12-02 12:49:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2023-12-02 12:49:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2023-12-02 12:49:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_ethtool_get_eee [2023-12-02 12:49:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_ethtool_get_eee [2023-12-02 12:49:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice_tail [2023-12-02 12:49:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice_tail [2023-12-02 12:49:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 12:49:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_tally_reset [2023-12-02 12:49:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_tally_reset [2023-12-02 12:49:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev8 [2023-12-02 12:49:06,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev8 [2023-12-02 12:49:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_resume [2023-12-02 12:49:06,855 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_resume [2023-12-02 12:49:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:49:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2023-12-02 12:49:06,855 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2023-12-02 12:49:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure rxdy_gated_en [2023-12-02 12:49:06,855 INFO L138 BoogieDeclarations]: Found implementation of procedure rxdy_gated_en [2023-12-02 12:49:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 12:49:06,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 12:49:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 12:49:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 12:49:06,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 12:49:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure r8153_set_rx_early_size [2023-12-02 12:49:06,856 INFO L138 BoogieDeclarations]: Found implementation of procedure r8153_set_rx_early_size [2023-12-02 12:49:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-12-02 12:49:06,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-12-02 12:49:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_splice [2023-12-02 12:49:06,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_splice [2023-12-02 12:49:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-12-02 12:49:06,857 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-12-02 12:49:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure __list_splice [2023-12-02 12:49:06,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_splice [2023-12-02 12:49:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-12-02 12:49:06,857 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-12-02 12:49:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_get_coalesce [2023-12-02 12:49:06,857 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_get_coalesce [2023-12-02 12:49:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_read_word [2023-12-02 12:49:06,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_read_word [2023-12-02 12:49:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2023-12-02 12:49:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2023-12-02 12:49:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_set_rx_mode [2023-12-02 12:49:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_set_rx_mode [2023-12-02 12:49:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_ioctl [2023-12-02 12:49:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_ioctl [2023-12-02 12:49:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2023-12-02 12:49:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2023-12-02 12:49:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure r8152b_disable_aldps [2023-12-02 12:49:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152b_disable_aldps [2023-12-02 12:49:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-12-02 12:49:06,859 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-12-02 12:49:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_change_mtu [2023-12-02 12:49:06,859 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_change_mtu [2023-12-02 12:49:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:49:06,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:49:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-12-02 12:49:06,859 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-12-02 12:49:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2023-12-02 12:49:06,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2023-12-02 12:49:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-12-02 12:49:06,859 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-12-02 12:49:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-12-02 12:49:06,860 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-12-02 12:49:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 12:49:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 12:49:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 12:49:06,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 12:49:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2023-12-02 12:49:06,860 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2023-12-02 12:49:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure mmd_eee_cap_to_ethtool_sup_t [2023-12-02 12:49:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure mmd_eee_cap_to_ethtool_sup_t [2023-12-02 12:49:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2023-12-02 12:49:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2023-12-02 12:49:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-12-02 12:49:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-12-02 12:49:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_disable [2023-12-02 12:49:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_disable [2023-12-02 12:49:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_enable [2023-12-02 12:49:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_enable [2023-12-02 12:49:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2023-12-02 12:49:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2023-12-02 12:49:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_head_init [2023-12-02 12:49:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_head_init [2023-12-02 12:49:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 12:49:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 12:49:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_ethtool_set_eee [2023-12-02 12:49:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_ethtool_set_eee [2023-12-02 12:49:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-12-02 12:49:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-12-02 12:49:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 12:49:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 12:49:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2023-12-02 12:49:06,863 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2023-12-02 12:49:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 12:49:06,863 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 12:49:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 12:49:06,863 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 12:49:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-12-02 12:49:06,863 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-12-02 12:49:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-12-02 12:49:06,863 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-12-02 12:49:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure generic_ocp_write [2023-12-02 12:49:06,864 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_ocp_write [2023-12-02 12:49:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_nway_reset [2023-12-02 12:49:06,864 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_nway_reset [2023-12-02 12:49:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_set_coalesce [2023-12-02 12:49:06,864 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_set_coalesce [2023-12-02 12:49:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-12-02 12:49:06,864 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-12-02 12:49:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 12:49:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure tx_agg_align [2023-12-02 12:49:06,864 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_agg_align [2023-12-02 12:49:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 12:49:06,865 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 12:49:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_features_check [2023-12-02 12:49:06,865 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_features_check [2023-12-02 12:49:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-12-02 12:49:06,865 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-12-02 12:49:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 12:49:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_reg_write [2023-12-02 12:49:06,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_reg_write [2023-12-02 12:49:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_tx_timeout [2023-12-02 12:49:06,866 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_tx_timeout [2023-12-02 12:49:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_1 [2023-12-02 12:49:06,866 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_1 [2023-12-02 12:49:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 12:49:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure rx_agg_align [2023-12-02 12:49:06,866 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_agg_align [2023-12-02 12:49:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure __rtl_get_wol [2023-12-02 12:49:06,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __rtl_get_wol [2023-12-02 12:49:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2023-12-02 12:49:06,866 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2023-12-02 12:49:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-12-02 12:49:06,867 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-12-02 12:49:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-12-02 12:49:06,867 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-12-02 12:49:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_start_rx [2023-12-02 12:49:06,867 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_start_rx [2023-12-02 12:49:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-12-02 12:49:06,867 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-12-02 12:49:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure r8152_mmd_indirect [2023-12-02 12:49:06,867 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152_mmd_indirect [2023-12-02 12:49:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure __rtl_set_wol [2023-12-02 12:49:06,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __rtl_set_wol [2023-12-02 12:49:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure r8152_power_cut_en [2023-12-02 12:49:06,868 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152_power_cut_en [2023-12-02 12:49:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_write_word [2023-12-02 12:49:06,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_write_word [2023-12-02 12:49:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_stop_rx [2023-12-02 12:49:06,868 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_stop_rx [2023-12-02 12:49:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-12-02 12:49:06,868 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-12-02 12:49:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_control_of_r8152 [2023-12-02 12:49:06,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_control_of_r8152 [2023-12-02 12:49:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-12-02 12:49:06,869 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-12-02 12:49:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure usb_mark_last_busy [2023-12-02 12:49:06,869 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_mark_last_busy [2023-12-02 12:49:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-12-02 12:49:06,869 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-12-02 12:49:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_splice_init [2023-12-02 12:49:06,869 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_splice_init [2023-12-02 12:49:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_set_wol [2023-12-02 12:49:06,870 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_set_wol [2023-12-02 12:49:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-12-02 12:49:06,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-12-02 12:49:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2023-12-02 12:49:06,870 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2023-12-02 12:49:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure mii_nway_restart [2023-12-02 12:49:06,870 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_nway_restart [2023-12-02 12:49:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-12-02 12:49:06,870 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-12-02 12:49:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 12:49:06,871 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 12:49:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure r8152_mmd_read [2023-12-02 12:49:06,871 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152_mmd_read [2023-12-02 12:49:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure r8153_teredo_off [2023-12-02 12:49:06,871 INFO L138 BoogieDeclarations]: Found implementation of procedure r8153_teredo_off [2023-12-02 12:49:06,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 12:49:06,872 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev16 [2023-12-02 12:49:06,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev16 [2023-12-02 12:49:06,872 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2023-12-02 12:49:06,872 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2023-12-02 12:49:06,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 12:49:06,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 12:49:06,872 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_close [2023-12-02 12:49:06,872 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_close [2023-12-02 12:49:06,872 INFO L130 BoogieDeclarations]: Found specification of procedure r8153_u1u2en [2023-12-02 12:49:06,873 INFO L138 BoogieDeclarations]: Found implementation of procedure r8153_u1u2en [2023-12-02 12:49:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure r8153_enable_aldps [2023-12-02 12:49:06,873 INFO L138 BoogieDeclarations]: Found implementation of procedure r8153_enable_aldps [2023-12-02 12:49:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure rtl_drop_queued_tx [2023-12-02 12:49:06,873 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl_drop_queued_tx [2023-12-02 12:49:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-12-02 12:49:06,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-12-02 12:49:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure r8152_mdio_read [2023-12-02 12:49:06,873 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152_mdio_read [2023-12-02 12:49:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_control_of_r8152 [2023-12-02 12:49:06,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_control_of_r8152 [2023-12-02 12:49:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure r8152b_enable_aldps [2023-12-02 12:49:06,874 INFO L138 BoogieDeclarations]: Found implementation of procedure r8152b_enable_aldps [2023-12-02 12:49:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_mem [2023-12-02 12:49:06,874 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_mem [2023-12-02 12:49:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_control_of_r8152 [2023-12-02 12:49:06,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_control_of_r8152 [2023-12-02 12:49:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2023-12-02 12:49:06,874 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2023-12-02 12:49:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure ocp_read_byte [2023-12-02 12:49:06,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ocp_read_byte [2023-12-02 12:49:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8152_set_mac_address [2023-12-02 12:49:06,874 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8152_set_mac_address [2023-12-02 12:49:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure sram_write [2023-12-02 12:49:06,875 INFO L138 BoogieDeclarations]: Found implementation of procedure sram_write [2023-12-02 12:49:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure set_tx_qlen [2023-12-02 12:49:06,875 INFO L138 BoogieDeclarations]: Found implementation of procedure set_tx_qlen [2023-12-02 12:49:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-12-02 12:49:06,875 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-12-02 12:49:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 12:49:06,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 12:49:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure get_registers [2023-12-02 12:49:06,875 INFO L138 BoogieDeclarations]: Found implementation of procedure get_registers [2023-12-02 12:49:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:49:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure set_registers [2023-12-02 12:49:06,876 INFO L138 BoogieDeclarations]: Found implementation of procedure set_registers [2023-12-02 12:49:07,709 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:49:07,714 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:49:07,878 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 12:49:18,356 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:49:22,345 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:49:22,345 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 12:49:22,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:49:22 BoogieIcfgContainer [2023-12-02 12:49:22,347 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:49:22,350 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:49:22,350 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:49:22,352 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:49:22,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:49:01" (1/3) ... [2023-12-02 12:49:22,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9db46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:49:22, skipping insertion in model container [2023-12-02 12:49:22,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:49:06" (2/3) ... [2023-12-02 12:49:22,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9db46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:49:22, skipping insertion in model container [2023-12-02 12:49:22,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:49:22" (3/3) ... [2023-12-02 12:49:22,354 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--r8152.ko-entry_point.cil.out.i [2023-12-02 12:49:22,369 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:49:22,370 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 12:49:22,451 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:49:22,457 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;@1cac9885, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:49:22,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 12:49:22,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 2477 states, 1374 states have (on average 1.3034934497816595) internal successors, (1791), 1441 states have internal predecessors, (1791), 929 states have call successors, (929), 173 states have call predecessors, (929), 172 states have return successors, (923), 909 states have call predecessors, (923), 923 states have call successors, (923) [2023-12-02 12:49:22,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-02 12:49:22,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:49:22,484 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:49:22,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:49:22,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:49:22,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1141708518, now seen corresponding path program 1 times [2023-12-02 12:49:22,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:49:22,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634040194] [2023-12-02 12:49:22,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:22,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:49:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:49:42,201 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2023-12-02 12:49:42,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:49:42,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634040194] [2023-12-02 12:49:42,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634040194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:49:42,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:49:42,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:49:42,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78388436] [2023-12-02 12:49:42,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:49:42,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:49:42,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:49:42,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:49:42,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:49:42,243 INFO L87 Difference]: Start difference. First operand has 2477 states, 1374 states have (on average 1.3034934497816595) internal successors, (1791), 1441 states have internal predecessors, (1791), 929 states have call successors, (929), 173 states have call predecessors, (929), 172 states have return successors, (923), 909 states have call predecessors, (923), 923 states have call successors, (923) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-02 12:49:44,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:49:46,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:49:49,619 WARN L539 Checker$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 12:49:54,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:49:56,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:49:59,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:49:59,383 INFO L93 Difference]: Finished difference Result 7327 states and 10967 transitions. [2023-12-02 12:49:59,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:49:59,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 192 [2023-12-02 12:49:59,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:49:59,445 INFO L225 Difference]: With dead ends: 7327 [2023-12-02 12:49:59,446 INFO L226 Difference]: Without dead ends: 4871 [2023-12-02 12:49:59,472 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 12:49:59,475 INFO L413 NwaCegarLoop]: 3289 mSDtfsCounter, 3539 mSDsluCounter, 3274 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3539 SdHoareTripleChecker+Valid, 6563 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:49:59,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3539 Valid, 6563 Invalid, 717 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 709 Invalid, 5 Unknown, 0 Unchecked, 16.6s Time] [2023-12-02 12:49:59,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2023-12-02 12:49:59,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4866. [2023-12-02 12:49:59,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4866 states, 2709 states have (on average 1.2986341823551126) internal successors, (3518), 2821 states have internal predecessors, (3518), 1815 states have call successors, (1815), 342 states have call predecessors, (1815), 341 states have return successors, (1808), 1780 states have call predecessors, (1808), 1808 states have call successors, (1808) [2023-12-02 12:49:59,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4866 states to 4866 states and 7141 transitions. [2023-12-02 12:49:59,809 INFO L78 Accepts]: Start accepts. Automaton has 4866 states and 7141 transitions. Word has length 192 [2023-12-02 12:49:59,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:49:59,810 INFO L495 AbstractCegarLoop]: Abstraction has 4866 states and 7141 transitions. [2023-12-02 12:49:59,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-02 12:49:59,811 INFO L276 IsEmpty]: Start isEmpty. Operand 4866 states and 7141 transitions. [2023-12-02 12:49:59,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-02 12:49:59,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:49:59,819 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:49:59,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 12:49:59,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:49:59,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:49:59,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1177806253, now seen corresponding path program 1 times [2023-12-02 12:49:59,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:49:59,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598096615] [2023-12-02 12:49:59,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:49:59,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:50:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:50:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2023-12-02 12:50:18,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:50:18,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598096615] [2023-12-02 12:50:18,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598096615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:50:18,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:50:18,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:50:18,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482970498] [2023-12-02 12:50:18,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:50:18,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:50:18,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:50:18,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:50:18,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:50:18,131 INFO L87 Difference]: Start difference. First operand 4866 states and 7141 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 12:50:20,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:50:23,852 WARN L539 Checker$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 12:50:25,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:50:28,551 WARN L539 Checker$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 12:50:31,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:50:31,910 INFO L93 Difference]: Finished difference Result 14379 states and 21077 transitions. [2023-12-02 12:50:31,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:50:31,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 200 [2023-12-02 12:50:31,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:50:32,017 INFO L225 Difference]: With dead ends: 14379 [2023-12-02 12:50:32,017 INFO L226 Difference]: Without dead ends: 9552 [2023-12-02 12:50:32,060 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 12:50:32,061 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 3480 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3480 SdHoareTripleChecker+Valid, 7620 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:50:32,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3480 Valid, 7620 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 832 Invalid, 4 Unknown, 0 Unchecked, 13.3s Time] [2023-12-02 12:50:32,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9552 states. [2023-12-02 12:50:32,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9552 to 9537. [2023-12-02 12:50:32,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9537 states, 5306 states have (on average 1.2970222389747457) internal successors, (6882), 5518 states have internal predecessors, (6882), 3549 states have call successors, (3549), 682 states have call predecessors, (3549), 681 states have return successors, (3542), 3488 states have call predecessors, (3542), 3542 states have call successors, (3542) [2023-12-02 12:50:32,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9537 states to 9537 states and 13973 transitions. [2023-12-02 12:50:32,710 INFO L78 Accepts]: Start accepts. Automaton has 9537 states and 13973 transitions. Word has length 200 [2023-12-02 12:50:32,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:50:32,712 INFO L495 AbstractCegarLoop]: Abstraction has 9537 states and 13973 transitions. [2023-12-02 12:50:32,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 12:50:32,712 INFO L276 IsEmpty]: Start isEmpty. Operand 9537 states and 13973 transitions. [2023-12-02 12:50:32,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-02 12:50:32,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:50:32,718 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:50:32,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 12:50:32,719 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:50:32,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:50:32,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2074995564, now seen corresponding path program 1 times [2023-12-02 12:50:32,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:50:32,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910202363] [2023-12-02 12:50:32,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:50:32,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:50:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:50:50,787 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2023-12-02 12:50:50,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:50:50,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910202363] [2023-12-02 12:50:50,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910202363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:50:50,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:50:50,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:50:50,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611636078] [2023-12-02 12:50:50,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:50:50,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:50:50,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:50:50,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:50:50,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:50:50,791 INFO L87 Difference]: Start difference. First operand 9537 states and 13973 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-02 12:50:52,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:50:55,758 WARN L539 Checker$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 12:50:59,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:51:01,708 WARN L539 Checker$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 12:51:04,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:51:04,156 INFO L93 Difference]: Finished difference Result 27106 states and 39642 transitions. [2023-12-02 12:51:04,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:51:04,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 207 [2023-12-02 12:51:04,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:51:04,292 INFO L225 Difference]: With dead ends: 27106 [2023-12-02 12:51:04,292 INFO L226 Difference]: Without dead ends: 17608 [2023-12-02 12:51:04,348 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 12:51:04,349 INFO L413 NwaCegarLoop]: 3356 mSDtfsCounter, 3141 mSDsluCounter, 3173 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3141 SdHoareTripleChecker+Valid, 6529 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:51:04,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3141 Valid, 6529 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 746 Invalid, 4 Unknown, 0 Unchecked, 12.7s Time] [2023-12-02 12:51:04,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17608 states. [2023-12-02 12:51:05,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17608 to 17594. [2023-12-02 12:51:05,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17594 states, 9724 states have (on average 1.2937062937062938) internal successors, (12580), 10134 states have internal predecessors, (12580), 6566 states have call successors, (6566), 1304 states have call predecessors, (6566), 1303 states have return successors, (6559), 6451 states have call predecessors, (6559), 6559 states have call successors, (6559) [2023-12-02 12:51:05,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17594 states to 17594 states and 25705 transitions. [2023-12-02 12:51:05,206 INFO L78 Accepts]: Start accepts. Automaton has 17594 states and 25705 transitions. Word has length 207 [2023-12-02 12:51:05,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:51:05,207 INFO L495 AbstractCegarLoop]: Abstraction has 17594 states and 25705 transitions. [2023-12-02 12:51:05,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-02 12:51:05,208 INFO L276 IsEmpty]: Start isEmpty. Operand 17594 states and 25705 transitions. [2023-12-02 12:51:05,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-02 12:51:05,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:05,211 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:05,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 12:51:05,212 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:05,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:05,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1194293131, now seen corresponding path program 1 times [2023-12-02 12:51:05,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:51:05,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946136173] [2023-12-02 12:51:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:05,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:51:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:23,450 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2023-12-02 12:51:23,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:51:23,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946136173] [2023-12-02 12:51:23,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946136173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:51:23,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:51:23,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:51:23,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436485765] [2023-12-02 12:51:23,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:51:23,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:51:23,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:51:23,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:51:23,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:51:23,453 INFO L87 Difference]: Start difference. First operand 17594 states and 25705 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 12:51:25,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:51:28,623 WARN L539 Checker$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 12:51:31,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:51:33,500 WARN L539 Checker$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 12:51:38,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:51:38,345 INFO L93 Difference]: Finished difference Result 50171 states and 73958 transitions. [2023-12-02 12:51:38,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:51:38,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 207 [2023-12-02 12:51:38,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:51:38,600 INFO L225 Difference]: With dead ends: 50171 [2023-12-02 12:51:38,600 INFO L226 Difference]: Without dead ends: 32624 [2023-12-02 12:51:38,735 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 12:51:38,737 INFO L413 NwaCegarLoop]: 3885 mSDtfsCounter, 3123 mSDsluCounter, 3097 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3123 SdHoareTripleChecker+Valid, 6982 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:51:38,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3123 Valid, 6982 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 781 Invalid, 4 Unknown, 0 Unchecked, 13.4s Time] [2023-12-02 12:51:38,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32624 states. [2023-12-02 12:51:40,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32624 to 32501. [2023-12-02 12:51:40,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32501 states, 18077 states have (on average 1.2986114952702328) internal successors, (23475), 18869 states have internal predecessors, (23475), 11943 states have call successors, (11943), 2476 states have call predecessors, (11943), 2480 states have return successors, (12367), 11702 states have call predecessors, (12367), 11929 states have call successors, (12367) [2023-12-02 12:51:41,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32501 states to 32501 states and 47785 transitions. [2023-12-02 12:51:41,082 INFO L78 Accepts]: Start accepts. Automaton has 32501 states and 47785 transitions. Word has length 207 [2023-12-02 12:51:41,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:51:41,083 INFO L495 AbstractCegarLoop]: Abstraction has 32501 states and 47785 transitions. [2023-12-02 12:51:41,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 12:51:41,083 INFO L276 IsEmpty]: Start isEmpty. Operand 32501 states and 47785 transitions. [2023-12-02 12:51:41,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-02 12:51:41,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:41,088 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:41,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 12:51:41,088 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:41,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:41,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1629803353, now seen corresponding path program 1 times [2023-12-02 12:51:41,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:51:41,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664436936] [2023-12-02 12:51:41,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:41,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:51:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:58,988 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2023-12-02 12:51:58,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:51:58,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664436936] [2023-12-02 12:51:58,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664436936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:51:58,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:51:58,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:51:58,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400173005] [2023-12-02 12:51:58,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:51:58,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:51:58,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:51:58,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:51:58,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:51:58,991 INFO L87 Difference]: Start difference. First operand 32501 states and 47785 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 12:52:01,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:52:04,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:52:06,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:52:06,519 INFO L93 Difference]: Finished difference Result 32503 states and 47786 transitions. [2023-12-02 12:52:06,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:52:06,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 208 [2023-12-02 12:52:06,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:52:06,703 INFO L225 Difference]: With dead ends: 32503 [2023-12-02 12:52:06,703 INFO L226 Difference]: Without dead ends: 32500 [2023-12-02 12:52:06,727 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 12:52:06,729 INFO L413 NwaCegarLoop]: 3264 mSDtfsCounter, 3567 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3567 SdHoareTripleChecker+Valid, 3264 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:52:06,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3567 Valid, 3264 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 350 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2023-12-02 12:52:06,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32500 states. [2023-12-02 12:52:08,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32500 to 32500. [2023-12-02 12:52:08,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32500 states, 18077 states have (on average 1.2985561763566964) internal successors, (23474), 18868 states have internal predecessors, (23474), 11942 states have call successors, (11942), 2476 states have call predecessors, (11942), 2480 states have return successors, (12367), 11702 states have call predecessors, (12367), 11929 states have call successors, (12367) [2023-12-02 12:52:08,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32500 states to 32500 states and 47783 transitions. [2023-12-02 12:52:08,450 INFO L78 Accepts]: Start accepts. Automaton has 32500 states and 47783 transitions. Word has length 208 [2023-12-02 12:52:08,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:52:08,451 INFO L495 AbstractCegarLoop]: Abstraction has 32500 states and 47783 transitions. [2023-12-02 12:52:08,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 12:52:08,451 INFO L276 IsEmpty]: Start isEmpty. Operand 32500 states and 47783 transitions. [2023-12-02 12:52:08,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-02 12:52:08,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:52:08,454 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:52:08,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 12:52:08,455 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:52:08,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:52:08,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1017513992, now seen corresponding path program 1 times [2023-12-02 12:52:08,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:52:08,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228598279] [2023-12-02 12:52:08,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:52:08,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:52:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:52:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2023-12-02 12:52:26,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:52:26,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228598279] [2023-12-02 12:52:26,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228598279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:52:26,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:52:26,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:52:26,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473709846] [2023-12-02 12:52:26,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:52:26,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:52:26,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:52:26,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:52:26,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:52:26,867 INFO L87 Difference]: Start difference. First operand 32500 states and 47783 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 12:52:28,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:52:31,883 WARN L539 Checker$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 12:52:35,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:52:35,043 INFO L93 Difference]: Finished difference Result 32502 states and 47784 transitions. [2023-12-02 12:52:35,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:52:35,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 209 [2023-12-02 12:52:35,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:52:35,203 INFO L225 Difference]: With dead ends: 32502 [2023-12-02 12:52:35,204 INFO L226 Difference]: Without dead ends: 32499 [2023-12-02 12:52:35,225 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 12:52:35,226 INFO L413 NwaCegarLoop]: 3262 mSDtfsCounter, 3564 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3564 SdHoareTripleChecker+Valid, 3262 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:52:35,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3564 Valid, 3262 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 350 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2023-12-02 12:52:35,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32499 states. [2023-12-02 12:52:36,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32499 to 32499. [2023-12-02 12:52:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32499 states, 18077 states have (on average 1.2985008574431598) internal successors, (23473), 18867 states have internal predecessors, (23473), 11941 states have call successors, (11941), 2476 states have call predecessors, (11941), 2480 states have return successors, (12367), 11702 states have call predecessors, (12367), 11929 states have call successors, (12367) [2023-12-02 12:52:37,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32499 states to 32499 states and 47781 transitions. [2023-12-02 12:52:37,050 INFO L78 Accepts]: Start accepts. Automaton has 32499 states and 47781 transitions. Word has length 209 [2023-12-02 12:52:37,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:52:37,051 INFO L495 AbstractCegarLoop]: Abstraction has 32499 states and 47781 transitions. [2023-12-02 12:52:37,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 12:52:37,051 INFO L276 IsEmpty]: Start isEmpty. Operand 32499 states and 47781 transitions. [2023-12-02 12:52:37,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-02 12:52:37,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:52:37,054 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:52:37,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 12:52:37,054 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:52:37,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:52:37,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1479968196, now seen corresponding path program 1 times [2023-12-02 12:52:37,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:52:37,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010848885] [2023-12-02 12:52:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:52:37,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:52:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:52:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2023-12-02 12:52:55,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:52:55,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010848885] [2023-12-02 12:52:55,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010848885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:52:55,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:52:55,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:52:55,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175161269] [2023-12-02 12:52:55,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:52:55,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:52:55,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:52:55,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:52:55,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:52:55,399 INFO L87 Difference]: Start difference. First operand 32499 states and 47781 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 12:52:57,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:53:00,436 WARN L539 Checker$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 12:53:03,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:53:03,271 INFO L93 Difference]: Finished difference Result 32501 states and 47782 transitions. [2023-12-02 12:53:03,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:53:03,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 210 [2023-12-02 12:53:03,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:53:03,399 INFO L225 Difference]: With dead ends: 32501 [2023-12-02 12:53:03,400 INFO L226 Difference]: Without dead ends: 32493 [2023-12-02 12:53:03,418 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 12:53:03,419 INFO L413 NwaCegarLoop]: 3261 mSDtfsCounter, 3561 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3561 SdHoareTripleChecker+Valid, 3261 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:53:03,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3561 Valid, 3261 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 349 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2023-12-02 12:53:03,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32493 states. [2023-12-02 12:53:05,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32493 to 32493. [2023-12-02 12:53:05,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32493 states, 18072 states have (on average 1.298140770252324) internal successors, (23460), 18861 states have internal predecessors, (23460), 11940 states have call successors, (11940), 2476 states have call predecessors, (11940), 2480 states have return successors, (12367), 11702 states have call predecessors, (12367), 11929 states have call successors, (12367) [2023-12-02 12:53:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32493 states to 32493 states and 47767 transitions. [2023-12-02 12:53:05,412 INFO L78 Accepts]: Start accepts. Automaton has 32493 states and 47767 transitions. Word has length 210 [2023-12-02 12:53:05,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:53:05,413 INFO L495 AbstractCegarLoop]: Abstraction has 32493 states and 47767 transitions. [2023-12-02 12:53:05,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 12:53:05,413 INFO L276 IsEmpty]: Start isEmpty. Operand 32493 states and 47767 transitions. [2023-12-02 12:53:05,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-02 12:53:05,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:53:05,417 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:05,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 12:53:05,417 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:53:05,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:53:05,418 INFO L85 PathProgramCache]: Analyzing trace with hash -686107733, now seen corresponding path program 1 times [2023-12-02 12:53:05,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:53:05,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763439267] [2023-12-02 12:53:05,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:53:05,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:53:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:53:26,048 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2023-12-02 12:53:26,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:53:26,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763439267] [2023-12-02 12:53:26,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763439267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:53:26,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:53:26,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:53:26,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230544635] [2023-12-02 12:53:26,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:53:26,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:53:26,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:53:26,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:53:26,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:53:26,051 INFO L87 Difference]: Start difference. First operand 32493 states and 47767 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-02 12:53:28,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:53:30,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:53:34,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:53:36,515 WARN L539 Checker$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 12:53:42,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:53:42,282 INFO L93 Difference]: Finished difference Result 92767 states and 136465 transitions. [2023-12-02 12:53:42,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:53:42,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 223 [2023-12-02 12:53:42,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:53:42,567 INFO L225 Difference]: With dead ends: 92767 [2023-12-02 12:53:42,567 INFO L226 Difference]: Without dead ends: 60321 [2023-12-02 12:53:42,692 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 12:53:42,693 INFO L413 NwaCegarLoop]: 3437 mSDtfsCounter, 3262 mSDsluCounter, 3125 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3262 SdHoareTripleChecker+Valid, 6562 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:53:42,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3262 Valid, 6562 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 792 Invalid, 4 Unknown, 0 Unchecked, 13.2s Time] [2023-12-02 12:53:42,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60321 states. [2023-12-02 12:53:45,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60321 to 60179. [2023-12-02 12:53:45,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60179 states, 33210 states have (on average 1.2916892502258357) internal successors, (42897), 34711 states have internal predecessors, (42897), 22238 states have call successors, (22238), 4708 states have call predecessors, (22238), 4730 states have return successors, (23455), 21778 states have call predecessors, (23455), 22227 states have call successors, (23455) [2023-12-02 12:53:46,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60179 states to 60179 states and 88590 transitions. [2023-12-02 12:53:46,277 INFO L78 Accepts]: Start accepts. Automaton has 60179 states and 88590 transitions. Word has length 223 [2023-12-02 12:53:46,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:53:46,277 INFO L495 AbstractCegarLoop]: Abstraction has 60179 states and 88590 transitions. [2023-12-02 12:53:46,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-02 12:53:46,277 INFO L276 IsEmpty]: Start isEmpty. Operand 60179 states and 88590 transitions. [2023-12-02 12:53:46,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-02 12:53:46,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:53:46,280 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:53:46,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 12:53:46,281 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:53:46,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:53:46,281 INFO L85 PathProgramCache]: Analyzing trace with hash -587244945, now seen corresponding path program 1 times [2023-12-02 12:53:46,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:53:46,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617516420] [2023-12-02 12:53:46,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:53:46,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:54:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:54:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2023-12-02 12:54:05,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:54:05,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617516420] [2023-12-02 12:54:05,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617516420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:54:05,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:54:05,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:54:05,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625831993] [2023-12-02 12:54:05,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:54:05,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:54:05,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:54:05,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:54:05,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:54:05,049 INFO L87 Difference]: Start difference. First operand 60179 states and 88590 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-02 12:54:07,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:54:09,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:54:13,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:54:15,777 WARN L539 Checker$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 12:54:17,789 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 12:54:21,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:54:21,996 INFO L93 Difference]: Finished difference Result 93434 states and 137426 transitions. [2023-12-02 12:54:21,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:54:21,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 243 [2023-12-02 12:54:21,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:54:22,147 INFO L225 Difference]: With dead ends: 93434 [2023-12-02 12:54:22,147 INFO L226 Difference]: Without dead ends: 33298 [2023-12-02 12:54:22,338 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 12:54:22,338 INFO L413 NwaCegarLoop]: 3257 mSDtfsCounter, 5 mSDsluCounter, 3254 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6511 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:54:22,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6511 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 700 Invalid, 5 Unknown, 0 Unchecked, 14.6s Time] [2023-12-02 12:54:22,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33298 states. [2023-12-02 12:54:24,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33298 to 33238. [2023-12-02 12:54:24,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33238 states, 18293 states have (on average 1.289509648499426) internal successors, (23589), 19123 states have internal predecessors, (23589), 12304 states have call successors, (12304), 2626 states have call predecessors, (12304), 2640 states have return successors, (12934), 12056 states have call predecessors, (12934), 12293 states have call successors, (12934) [2023-12-02 12:54:24,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33238 states to 33238 states and 48827 transitions. [2023-12-02 12:54:24,640 INFO L78 Accepts]: Start accepts. Automaton has 33238 states and 48827 transitions. Word has length 243 [2023-12-02 12:54:24,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:54:24,641 INFO L495 AbstractCegarLoop]: Abstraction has 33238 states and 48827 transitions. [2023-12-02 12:54:24,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-02 12:54:24,641 INFO L276 IsEmpty]: Start isEmpty. Operand 33238 states and 48827 transitions. [2023-12-02 12:54:24,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-02 12:54:24,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:54:24,644 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:24,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 12:54:24,644 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:54:24,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:54:24,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1085684853, now seen corresponding path program 1 times [2023-12-02 12:54:24,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:54:24,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048753605] [2023-12-02 12:54:24,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:54:24,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:54:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:54:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2023-12-02 12:54:43,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:54:43,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048753605] [2023-12-02 12:54:43,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048753605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:54:43,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:54:43,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:54:43,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644182804] [2023-12-02 12:54:43,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:54:43,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:54:43,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:54:43,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:54:43,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:54:43,301 INFO L87 Difference]: Start difference. First operand 33238 states and 48827 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-02 12:54:45,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:54:49,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:54:52,435 WARN L539 Checker$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 12:54:54,449 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 12:55:00,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:55:00,031 INFO L93 Difference]: Finished difference Result 97736 states and 143844 transitions. [2023-12-02 12:55:00,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:55:00,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 256 [2023-12-02 12:55:00,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:55:00,441 INFO L225 Difference]: With dead ends: 97736 [2023-12-02 12:55:00,441 INFO L226 Difference]: Without dead ends: 64545 [2023-12-02 12:55:00,604 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 12:55:00,605 INFO L413 NwaCegarLoop]: 3360 mSDtfsCounter, 3575 mSDsluCounter, 3233 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3575 SdHoareTripleChecker+Valid, 6593 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:55:00,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3575 Valid, 6593 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 710 Invalid, 4 Unknown, 0 Unchecked, 13.3s Time] [2023-12-02 12:55:00,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64545 states. [2023-12-02 12:55:04,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64545 to 64320. [2023-12-02 12:55:04,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64320 states, 35131 states have (on average 1.2833110358372948) internal successors, (45084), 36798 states have internal predecessors, (45084), 24027 states have call successors, (24027), 5131 states have call predecessors, (24027), 5161 states have return successors, (25651), 23518 states have call predecessors, (25651), 24016 states have call successors, (25651) [2023-12-02 12:55:04,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64320 states to 64320 states and 94762 transitions. [2023-12-02 12:55:04,743 INFO L78 Accepts]: Start accepts. Automaton has 64320 states and 94762 transitions. Word has length 256 [2023-12-02 12:55:04,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:55:04,744 INFO L495 AbstractCegarLoop]: Abstraction has 64320 states and 94762 transitions. [2023-12-02 12:55:04,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-02 12:55:04,744 INFO L276 IsEmpty]: Start isEmpty. Operand 64320 states and 94762 transitions. [2023-12-02 12:55:04,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-02 12:55:04,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:55:04,746 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:04,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 12:55:04,746 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:55:04,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:55:04,747 INFO L85 PathProgramCache]: Analyzing trace with hash 2063299636, now seen corresponding path program 1 times [2023-12-02 12:55:04,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:55:04,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779741469] [2023-12-02 12:55:04,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:55:04,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:55:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:55:25,085 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2023-12-02 12:55:25,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:55:25,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779741469] [2023-12-02 12:55:25,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779741469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:55:25,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:55:25,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:55:25,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827730223] [2023-12-02 12:55:25,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:55:25,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:55:25,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:55:25,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:55:25,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:55:25,087 INFO L87 Difference]: Start difference. First operand 64320 states and 94762 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-02 12:55:27,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:55:31,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:55:34,118 WARN L539 Checker$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 12:55:36,131 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 12:55:42,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:55:42,178 INFO L93 Difference]: Finished difference Result 128797 states and 189714 transitions. [2023-12-02 12:55:42,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:55:42,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 253 [2023-12-02 12:55:42,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:55:42,489 INFO L225 Difference]: With dead ends: 128797 [2023-12-02 12:55:42,489 INFO L226 Difference]: Without dead ends: 64524 [2023-12-02 12:55:42,719 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 12:55:42,720 INFO L413 NwaCegarLoop]: 3379 mSDtfsCounter, 3574 mSDsluCounter, 3231 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3574 SdHoareTripleChecker+Valid, 6610 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:55:42,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3574 Valid, 6610 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 710 Invalid, 4 Unknown, 0 Unchecked, 13.1s Time] [2023-12-02 12:55:42,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64524 states. [2023-12-02 12:55:46,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64524 to 64302. [2023-12-02 12:55:46,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64302 states, 35122 states have (on average 1.2831273845452993) internal successors, (45066), 36789 states have internal predecessors, (45066), 24018 states have call successors, (24018), 5131 states have call predecessors, (24018), 5161 states have return successors, (25616), 23509 states have call predecessors, (25616), 24007 states have call successors, (25616) [2023-12-02 12:55:47,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64302 states to 64302 states and 94700 transitions. [2023-12-02 12:55:47,291 INFO L78 Accepts]: Start accepts. Automaton has 64302 states and 94700 transitions. Word has length 253 [2023-12-02 12:55:47,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:55:47,292 INFO L495 AbstractCegarLoop]: Abstraction has 64302 states and 94700 transitions. [2023-12-02 12:55:47,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-02 12:55:47,292 INFO L276 IsEmpty]: Start isEmpty. Operand 64302 states and 94700 transitions. [2023-12-02 12:55:47,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-02 12:55:47,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:55:47,294 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:47,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 12:55:47,294 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:55:47,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:55:47,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1800053556, now seen corresponding path program 1 times [2023-12-02 12:55:47,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:55:47,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654307565] [2023-12-02 12:55:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:55:47,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:56:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:56:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2023-12-02 12:56:06,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:56:06,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654307565] [2023-12-02 12:56:06,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654307565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:56:06,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:56:06,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:56:06,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533768965] [2023-12-02 12:56:06,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:56:06,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:56:06,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:56:06,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:56:06,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:56:06,024 INFO L87 Difference]: Start difference. First operand 64302 states and 94700 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-02 12:56:08,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:56:12,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:56:15,509 WARN L539 Checker$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 12:56:17,519 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 12:56:23,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:56:23,730 INFO L93 Difference]: Finished difference Result 128761 states and 189590 transitions. [2023-12-02 12:56:23,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:56:23,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 254 [2023-12-02 12:56:23,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:56:23,985 INFO L225 Difference]: With dead ends: 128761 [2023-12-02 12:56:23,986 INFO L226 Difference]: Without dead ends: 64506 [2023-12-02 12:56:24,188 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 12:56:24,189 INFO L413 NwaCegarLoop]: 3378 mSDtfsCounter, 3569 mSDsluCounter, 3231 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3569 SdHoareTripleChecker+Valid, 6609 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:56:24,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3569 Valid, 6609 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 711 Invalid, 4 Unknown, 0 Unchecked, 13.6s Time] [2023-12-02 12:56:24,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64506 states. [2023-12-02 12:56:28,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64506 to 64284. [2023-12-02 12:56:28,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64284 states, 35113 states have (on average 1.2829436391080227) internal successors, (45048), 36780 states have internal predecessors, (45048), 24009 states have call successors, (24009), 5131 states have call predecessors, (24009), 5161 states have return successors, (25581), 23500 states have call predecessors, (25581), 23998 states have call successors, (25581) [2023-12-02 12:56:28,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64284 states to 64284 states and 94638 transitions. [2023-12-02 12:56:28,903 INFO L78 Accepts]: Start accepts. Automaton has 64284 states and 94638 transitions. Word has length 254 [2023-12-02 12:56:28,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:56:28,903 INFO L495 AbstractCegarLoop]: Abstraction has 64284 states and 94638 transitions. [2023-12-02 12:56:28,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-02 12:56:28,903 INFO L276 IsEmpty]: Start isEmpty. Operand 64284 states and 94638 transitions. [2023-12-02 12:56:28,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-12-02 12:56:28,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:56:28,905 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:56:28,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 12:56:28,905 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:56:28,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:56:28,906 INFO L85 PathProgramCache]: Analyzing trace with hash -135796547, now seen corresponding path program 1 times [2023-12-02 12:56:28,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:56:28,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997421908] [2023-12-02 12:56:28,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:56:28,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:56:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:56:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2023-12-02 12:56:48,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:56:48,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997421908] [2023-12-02 12:56:48,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997421908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:56:48,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:56:48,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:56:48,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719177168] [2023-12-02 12:56:48,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:56:48,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:56:48,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:56:48,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:56:48,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:56:48,328 INFO L87 Difference]: Start difference. First operand 64284 states and 94638 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-02 12:56:50,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:56:52,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:56:58,505 WARN L539 Checker$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 12:57:00,513 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 12:57:06,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:57:06,157 INFO L93 Difference]: Finished difference Result 122706 states and 180756 transitions. [2023-12-02 12:57:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:57:06,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 255 [2023-12-02 12:57:06,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:57:06,361 INFO L225 Difference]: With dead ends: 122706 [2023-12-02 12:57:06,361 INFO L226 Difference]: Without dead ends: 58469 [2023-12-02 12:57:06,539 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 12:57:06,539 INFO L413 NwaCegarLoop]: 3972 mSDtfsCounter, 3564 mSDsluCounter, 3230 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3564 SdHoareTripleChecker+Valid, 7202 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:57:06,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3564 Valid, 7202 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 769 Invalid, 4 Unknown, 0 Unchecked, 14.3s Time] [2023-12-02 12:57:06,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58469 states. [2023-12-02 12:57:09,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58469 to 58268. [2023-12-02 12:57:10,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58268 states, 31913 states have (on average 1.284774229937643) internal successors, (41001), 33418 states have internal predecessors, (41001), 21713 states have call successors, (21713), 4619 states have call predecessors, (21713), 4641 states have return successors, (23182), 21242 states have call predecessors, (23182), 21702 states have call successors, (23182) [2023-12-02 12:57:10,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58268 states to 58268 states and 85896 transitions. [2023-12-02 12:57:10,300 INFO L78 Accepts]: Start accepts. Automaton has 58268 states and 85896 transitions. Word has length 255 [2023-12-02 12:57:10,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:57:10,300 INFO L495 AbstractCegarLoop]: Abstraction has 58268 states and 85896 transitions. [2023-12-02 12:57:10,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-02 12:57:10,300 INFO L276 IsEmpty]: Start isEmpty. Operand 58268 states and 85896 transitions. [2023-12-02 12:57:10,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-02 12:57:10,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:57:10,304 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 8, 8, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:10,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 12:57:10,304 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:57:10,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:57:10,305 INFO L85 PathProgramCache]: Analyzing trace with hash -233178734, now seen corresponding path program 1 times [2023-12-02 12:57:10,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:57:10,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693201348] [2023-12-02 12:57:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:57:10,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:57:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:57:28,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1248 trivial. 0 not checked. [2023-12-02 12:57:28,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:57:28,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693201348] [2023-12-02 12:57:28,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693201348] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:57:28,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:57:28,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:57:28,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093488843] [2023-12-02 12:57:28,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:57:28,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:57:28,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:57:28,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:57:28,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:57:28,300 INFO L87 Difference]: Start difference. First operand 58268 states and 85896 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-02 12:57:30,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:57:32,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:57:35,319 WARN L539 Checker$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 12:57:37,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:57:40,776 WARN L539 Checker$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 12:57:46,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:57:46,983 INFO L93 Difference]: Finished difference Result 116047 states and 170051 transitions. [2023-12-02 12:57:46,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:57:46,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 298 [2023-12-02 12:57:46,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:57:47,225 INFO L225 Difference]: With dead ends: 116047 [2023-12-02 12:57:47,225 INFO L226 Difference]: Without dead ends: 60717 [2023-12-02 12:57:47,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 12:57:47,412 INFO L413 NwaCegarLoop]: 4684 mSDtfsCounter, 2436 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2436 SdHoareTripleChecker+Valid, 7400 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:57:47,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2436 Valid, 7400 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 848 Invalid, 5 Unknown, 0 Unchecked, 15.4s Time] [2023-12-02 12:57:47,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60717 states. [2023-12-02 12:57:50,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60717 to 60526. [2023-12-02 12:57:50,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60526 states, 33156 states have (on average 1.2826336108095067) internal successors, (42527), 34680 states have internal predecessors, (42527), 22159 states have call successors, (22159), 5209 states have call predecessors, (22159), 5210 states have return successors, (23016), 21668 states have call predecessors, (23016), 22146 states have call successors, (23016) [2023-12-02 12:57:51,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60526 states to 60526 states and 87702 transitions. [2023-12-02 12:57:51,192 INFO L78 Accepts]: Start accepts. Automaton has 60526 states and 87702 transitions. Word has length 298 [2023-12-02 12:57:51,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:57:51,193 INFO L495 AbstractCegarLoop]: Abstraction has 60526 states and 87702 transitions. [2023-12-02 12:57:51,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-02 12:57:51,193 INFO L276 IsEmpty]: Start isEmpty. Operand 60526 states and 87702 transitions. [2023-12-02 12:57:51,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-12-02 12:57:51,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:57:51,205 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:51,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 12:57:51,206 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:57:51,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:57:51,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1641816338, now seen corresponding path program 1 times [2023-12-02 12:57:51,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:57:51,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402816464] [2023-12-02 12:57:51,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:57:51,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 2 proven. 35 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2023-12-02 12:58:10,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:10,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402816464] [2023-12-02 12:58:10,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402816464] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:58:10,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424247172] [2023-12-02 12:58:10,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:10,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:10,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:10,823 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:58:10,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 12:58:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:53,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 5355 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:58:53,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:58:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 589 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2023-12-02 12:58:54,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:58:54,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424247172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:58:54,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:58:54,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2023-12-02 12:58:54,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953348693] [2023-12-02 12:58:54,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:58:54,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:58:54,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:58:54,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:58:54,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:58:54,146 INFO L87 Difference]: Start difference. First operand 60526 states and 87702 transitions. Second operand has 6 states, 4 states have (on average 22.0) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2023-12-02 12:58:56,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:58:58,462 WARN L539 Checker$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 12:59:00,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:59:02,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:59:05,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:59:08,973 WARN L539 Checker$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 12:59:10,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:59:12,984 WARN L539 Checker$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 12:59:14,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:59:17,000 WARN L539 Checker$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 12:59:29,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:59:29,269 INFO L93 Difference]: Finished difference Result 121098 states and 176407 transitions. [2023-12-02 12:59:29,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:59:29,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 22.0) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 324 [2023-12-02 12:59:29,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:59:29,517 INFO L225 Difference]: With dead ends: 121098 [2023-12-02 12:59:29,517 INFO L226 Difference]: Without dead ends: 60563 [2023-12-02 12:59:29,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-02 12:59:29,862 INFO L413 NwaCegarLoop]: 3248 mSDtfsCounter, 3 mSDsluCounter, 12970 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 9 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 16218 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:59:29,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 16218 Invalid, 1832 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 1813 Invalid, 10 Unknown, 0 Unchecked, 31.6s Time] [2023-12-02 12:59:29,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60563 states. [2023-12-02 12:59:33,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60563 to 60563. [2023-12-02 12:59:33,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60563 states, 33193 states have (on average 1.2823185611424095) internal successors, (42564), 34717 states have internal predecessors, (42564), 22159 states have call successors, (22159), 5209 states have call predecessors, (22159), 5210 states have return successors, (23016), 21668 states have call predecessors, (23016), 22146 states have call successors, (23016) [2023-12-02 12:59:33,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60563 states to 60563 states and 87739 transitions. [2023-12-02 12:59:33,775 INFO L78 Accepts]: Start accepts. Automaton has 60563 states and 87739 transitions. Word has length 324 [2023-12-02 12:59:33,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:59:33,776 INFO L495 AbstractCegarLoop]: Abstraction has 60563 states and 87739 transitions. [2023-12-02 12:59:33,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 22.0) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2023-12-02 12:59:33,776 INFO L276 IsEmpty]: Start isEmpty. Operand 60563 states and 87739 transitions. [2023-12-02 12:59:33,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-02 12:59:33,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:59:33,784 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:33,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 12:59:33,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 12:59:33,985 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:59:33,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:59:33,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1795216494, now seen corresponding path program 1 times [2023-12-02 12:59:33,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:59:33,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300513269] [2023-12-02 12:59:33,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:33,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:59:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 2 proven. 57 refuted. 0 times theorem prover too weak. 1294 trivial. 0 not checked. [2023-12-02 12:59:53,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:59:53,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300513269] [2023-12-02 12:59:53,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300513269] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:59:53,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690842231] [2023-12-02 12:59:53,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:53,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:59:53,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:59:53,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:59:53,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 13:00:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:33,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 5475 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 13:00:33,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 610 proven. 1 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2023-12-02 13:00:33,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:00:34,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 2 proven. 57 refuted. 0 times theorem prover too weak. 1294 trivial. 0 not checked. [2023-12-02 13:00:34,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690842231] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:00:34,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1517069725] [2023-12-02 13:00:34,598 INFO L159 IcfgInterpreter]: Started Sifa with 121 locations of interest [2023-12-02 13:00:34,599 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:00:34,602 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 13:00:34,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:00:34,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-12-02 13:00:34,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315988601] [2023-12-02 13:00:34,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 13:00:34,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 13:00:34,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:34,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 13:00:34,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-02 13:00:34,606 INFO L87 Difference]: Start difference. First operand 60563 states and 87739 transitions. Second operand has 13 states, 9 states have (on average 12.0) internal successors, (108), 13 states have internal predecessors, (108), 4 states have call successors, (56), 2 states have call predecessors, (56), 6 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-12-02 13:00:36,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:00:38,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:00:41,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:00:43,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:00:45,625 WARN L539 Checker$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 13:00:47,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:00:50,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:00:52,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:00:54,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:00:56,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:00:59,057 WARN L539 Checker$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 13:01:01,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:01:06,652 WARN L539 Checker$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 13:01:08,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:01:10,676 WARN L539 Checker$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 13:01:12,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:01:14,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:01:16,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:01:18,705 WARN L539 Checker$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 13:01:20,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:01:22,725 WARN L539 Checker$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 13:01:24,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:01:26,746 WARN L539 Checker$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 13:01:28,754 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 13:01:49,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:49,389 INFO L93 Difference]: Finished difference Result 121181 states and 176492 transitions. [2023-12-02 13:01:49,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 13:01:49,390 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 12.0) internal successors, (108), 13 states have internal predecessors, (108), 4 states have call successors, (56), 2 states have call predecessors, (56), 6 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) Word has length 332 [2023-12-02 13:01:49,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:49,648 INFO L225 Difference]: With dead ends: 121181 [2023-12-02 13:01:49,648 INFO L226 Difference]: Without dead ends: 60609 [2023-12-02 13:01:49,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 658 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-12-02 13:01:49,880 INFO L413 NwaCegarLoop]: 3248 mSDtfsCounter, 9 mSDsluCounter, 25931 mSDsCounter, 0 mSdLazyCounter, 3339 mSolverCounterSat, 16 mSolverCounterUnsat, 24 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29179 SdHoareTripleChecker+Invalid, 3379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3339 IncrementalHoareTripleChecker+Invalid, 24 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:49,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 29179 Invalid, 3379 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 3339 Invalid, 24 Unknown, 0 Unchecked, 70.6s Time] [2023-12-02 13:01:49,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60609 states. [2023-12-02 13:01:53,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60609 to 60609. [2023-12-02 13:01:53,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60609 states, 33236 states have (on average 1.2819833915031893) internal successors, (42608), 34760 states have internal predecessors, (42608), 22160 states have call successors, (22160), 5211 states have call predecessors, (22160), 5212 states have return successors, (23017), 21669 states have call predecessors, (23017), 22147 states have call successors, (23017) [2023-12-02 13:01:54,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60609 states to 60609 states and 87785 transitions. [2023-12-02 13:01:54,102 INFO L78 Accepts]: Start accepts. Automaton has 60609 states and 87785 transitions. Word has length 332 [2023-12-02 13:01:54,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:54,102 INFO L495 AbstractCegarLoop]: Abstraction has 60609 states and 87785 transitions. [2023-12-02 13:01:54,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 12.0) internal successors, (108), 13 states have internal predecessors, (108), 4 states have call successors, (56), 2 states have call predecessors, (56), 6 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-12-02 13:01:54,102 INFO L276 IsEmpty]: Start isEmpty. Operand 60609 states and 87785 transitions. [2023-12-02 13:01:54,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-12-02 13:01:54,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:54,110 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:01:54,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 13:01:54,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efca1f7a-1759-425c-aae8-6720d65fa7ff/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 13:01:54,311 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:01:54,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:54,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1426771730, now seen corresponding path program 2 times [2023-12-02 13:01:54,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:54,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202359418] [2023-12-02 13:01:54,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:54,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms