./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8946ad2f029076f7c4f90de60a8c48e069f80fec06a0c6d7a5dc3a1fc4182879 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:06:34,835 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:06:34,954 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 04:06:34,960 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:06:34,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:06:34,996 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:06:34,997 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:06:34,997 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:06:34,997 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:06:34,998 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:06:34,998 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:06:34,998 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:06:34,998 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:06:34,999 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:06:34,999 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:06:34,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:06:34,999 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:06:35,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:06:35,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:06:35,001 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:06:35,002 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:06:35,002 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:06:35,002 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:06:35,002 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:06:35,002 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:06:35,002 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:06:35,002 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:06:35,003 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:06:35,003 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:06:35,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:06:35,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:06:35,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:06:35,003 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:06:35,003 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:06:35,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:06:35,003 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:06:35,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:06:35,004 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:06:35,004 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:06:35,004 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:06:35,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:06:35,004 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:06:35,004 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:06:35,004 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:06:35,004 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:06:35,004 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8946ad2f029076f7c4f90de60a8c48e069f80fec06a0c6d7a5dc3a1fc4182879 [2024-11-28 04:06:35,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:06:35,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:06:35,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:06:35,442 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:06:35,443 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:06:35,444 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2024-11-28 04:06:38,925 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/data/5e54116c9/3c7a95d38f6343a1a25c93095ccfef98/FLAGa432cc20e [2024-11-28 04:06:39,661 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:06:39,664 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2024-11-28 04:06:39,724 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/data/5e54116c9/3c7a95d38f6343a1a25c93095ccfef98/FLAGa432cc20e [2024-11-28 04:06:40,012 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/data/5e54116c9/3c7a95d38f6343a1a25c93095ccfef98 [2024-11-28 04:06:40,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:06:40,018 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:06:40,020 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:06:40,020 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:06:40,027 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:06:40,028 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:06:40" (1/1) ... [2024-11-28 04:06:40,029 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@106a41eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:40, skipping insertion in model container [2024-11-28 04:06:40,030 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:06:40" (1/1) ... [2024-11-28 04:06:40,126 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:06:41,359 WARN L250 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_85607211-1b45-48a3-9528-2cfb7305da51/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i[121503,121516] [2024-11-28 04:06:41,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:06:41,451 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:06:41,638 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [3095-3096] [2024-11-28 04:06:41,683 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/scatterlist.h"), "i" (63), "i" (12UL)); [3374-3375] [2024-11-28 04:06:41,684 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/scatterlist.h"), "i" (65), "i" (12UL)); [3382-3383] [2024-11-28 04:06:41,685 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/scatterlist.h"), "i" (66), "i" (12UL)); [3390-3391] [2024-11-28 04:06:41,738 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 *)"/home/ldvuser/andrianov/commit-tester-work/task-014--linux-stable--dir/work/current--X--drivers/block/virtio_blk.ko--X--defaultlinux-stable-39a1d13-1--X--101_1a--X--cpachecker/linux-stable-39a1d13-1/csd_deg_dscv/11/dscv_tempdir/dscv/ri/101_1a/drivers/block/virtio_blk.c"), "i" (123), "i" (12UL)); [3605-3606] [2024-11-28 04:06:41,749 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 *)"/home/ldvuser/andrianov/commit-tester-work/task-014--linux-stable--dir/work/current--X--drivers/block/virtio_blk.ko--X--defaultlinux-stable-39a1d13-1--X--101_1a--X--cpachecker/linux-stable-39a1d13-1/csd_deg_dscv/11/dscv_tempdir/dscv/ri/101_1a/drivers/block/virtio_blk.c"), "i" (177), "i" (12UL)); [3680-3681] [2024-11-28 04:06:41,876 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 *)"/home/ldvuser/andrianov/commit-tester-work/task-014--linux-stable--dir/work/current--X--drivers/block/virtio_blk.ko--X--defaultlinux-stable-39a1d13-1--X--101_1a--X--cpachecker/linux-stable-39a1d13-1/csd_deg_dscv/11/dscv_tempdir/dscv/ri/101_1a/drivers/block/virtio_blk.c"), "i" (467), "i" (12UL)); [4002-4003] [2024-11-28 04:06:41,902 WARN L250 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_85607211-1b45-48a3-9528-2cfb7305da51/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i[121503,121516] [2024-11-28 04:06:41,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:06:41,979 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:06:41,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:41 WrapperNode [2024-11-28 04:06:41,980 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:06:41,982 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:06:41,982 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:06:41,982 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:06:41,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:41" (1/1) ... [2024-11-28 04:06:42,027 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:41" (1/1) ... [2024-11-28 04:06:42,170 INFO L138 Inliner]: procedures = 143, calls = 525, calls flagged for inlining = 83, calls inlined = 83, statements flattened = 1744 [2024-11-28 04:06:42,171 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:06:42,172 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:06:42,172 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:06:42,172 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:06:42,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:41" (1/1) ... [2024-11-28 04:06:42,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:41" (1/1) ... [2024-11-28 04:06:42,215 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:41" (1/1) ... [2024-11-28 04:06:42,564 INFO L175 MemorySlicer]: Split 263 memory accesses to 10 slices as follows [2, 25, 192, 8, 8, 21, 4, 1, 1, 1]. 73 percent of accesses are in the largest equivalence class. The 31 initializations are split as follows [2, 0, 13, 8, 8, 0, 0, 0, 0, 0]. The 91 writes are split as follows [0, 3, 63, 0, 0, 21, 2, 1, 1, 0]. [2024-11-28 04:06:42,564 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:41" (1/1) ... [2024-11-28 04:06:42,564 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:41" (1/1) ... [2024-11-28 04:06:42,666 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:41" (1/1) ... [2024-11-28 04:06:42,670 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:41" (1/1) ... [2024-11-28 04:06:42,692 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:41" (1/1) ... [2024-11-28 04:06:42,708 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:41" (1/1) ... [2024-11-28 04:06:42,722 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:41" (1/1) ... [2024-11-28 04:06:42,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:06:42,764 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:06:42,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:06:42,764 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:06:42,765 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:41" (1/1) ... [2024-11-28 04:06:42,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:06:42,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:06:42,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:06:42,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:06:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2024-11-28 04:06:42,850 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segment_size [2024-11-28 04:06:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 04:06:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 04:06:42,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 04:06:42,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 04:06:42,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 04:06:42,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-28 04:06:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-28 04:06:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-28 04:06:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-28 04:06:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-11-28 04:06:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2024-11-28 04:06:42,853 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2024-11-28 04:06:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 04:06:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 04:06:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 04:06:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 04:06:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 04:06:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-28 04:06:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-28 04:06:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-28 04:06:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-28 04:06:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-11-28 04:06:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-28 04:06:42,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-28 04:06:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:06:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:06:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:06:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:06:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 04:06:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 04:06:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 04:06:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-28 04:06:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-28 04:06:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-28 04:06:42,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-28 04:06:42,859 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-28 04:06:42,859 INFO L130 BoogieDeclarations]: Found specification of procedure req_get_ioprio [2024-11-28 04:06:42,859 INFO L138 BoogieDeclarations]: Found implementation of procedure req_get_ioprio [2024-11-28 04:06:42,859 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2024-11-28 04:06:42,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2024-11-28 04:06:42,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-28 04:06:42,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-28 04:06:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free [2024-11-28 04:06:42,860 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_free [2024-11-28 04:06:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_buf [2024-11-28 04:06:42,860 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_buf [2024-11-28 04:06:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-28 04:06:42,860 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-28 04:06:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:06:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:06:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:06:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:06:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 04:06:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 04:06:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 04:06:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-28 04:06:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-28 04:06:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-28 04:06:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-28 04:06:42,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-28 04:06:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-28 04:06:42,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-28 04:06:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure index_to_minor [2024-11-28 04:06:42,862 INFO L138 BoogieDeclarations]: Found implementation of procedure index_to_minor [2024-11-28 04:06:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-28 04:06:42,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-28 04:06:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:06:42,862 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:06:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:06:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-28 04:06:42,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-28 04:06:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2024-11-28 04:06:42,863 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2024-11-28 04:06:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:06:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2024-11-28 04:06:42,863 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2024-11-28 04:06:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:06:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 04:06:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 04:06:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 04:06:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 04:06:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 04:06:42,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-28 04:06:42,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-28 04:06:42,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-28 04:06:42,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-28 04:06:42,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-28 04:06:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-28 04:06:42,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-28 04:06:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2024-11-28 04:06:42,867 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2024-11-28 04:06:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_destroy [2024-11-28 04:06:42,867 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_destroy [2024-11-28 04:06:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 04:06:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 04:06:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 04:06:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 04:06:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 04:06:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-28 04:06:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-28 04:06:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-28 04:06:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-28 04:06:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-28 04:06:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2024-11-28 04:06:42,868 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2024-11-28 04:06:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2024-11-28 04:06:42,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2024-11-28 04:06:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:06:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2024-11-28 04:06:42,868 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2024-11-28 04:06:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_ordered [2024-11-28 04:06:42,868 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_ordered [2024-11-28 04:06:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:06:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:06:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:06:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:06:42,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:06:42,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 04:06:42,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 04:06:42,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 04:06:42,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 04:06:42,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 04:06:42,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:06:42,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:06:42,872 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2024-11-28 04:06:42,872 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2024-11-28 04:06:43,657 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:06:43,661 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:06:43,749 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-28 04:06:50,174 INFO L? ?]: Removed 975 outVars from TransFormulas that were not future-live. [2024-11-28 04:06:50,175 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:06:50,196 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:06:50,196 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 04:06:50,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:06:50 BoogieIcfgContainer [2024-11-28 04:06:50,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:06:50,199 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:06:50,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:06:50,209 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:06:50,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:06:40" (1/3) ... [2024-11-28 04:06:50,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322dad84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:06:50, skipping insertion in model container [2024-11-28 04:06:50,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:41" (2/3) ... [2024-11-28 04:06:50,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322dad84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:06:50, skipping insertion in model container [2024-11-28 04:06:50,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:06:50" (3/3) ... [2024-11-28 04:06:50,212 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2024-11-28 04:06:50,231 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:06:50,232 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i that has 27 procedures, 469 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-28 04:06:50,345 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:06:50,364 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@43d117ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:06:50,364 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:06:50,370 INFO L276 IsEmpty]: Start isEmpty. Operand has 468 states, 357 states have (on average 1.3053221288515406) internal successors, (466), 372 states have internal predecessors, (466), 84 states have call successors, (84), 26 states have call predecessors, (84), 25 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-28 04:06:50,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-28 04:06:50,381 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:06:50,382 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:06:50,384 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:06:50,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:06:50,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1910474653, now seen corresponding path program 1 times [2024-11-28 04:06:50,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:06:50,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522634645] [2024-11-28 04:06:50,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:50,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:06:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:51,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:06:51,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:06:51,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522634645] [2024-11-28 04:06:51,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522634645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:06:51,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:06:51,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:06:51,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865745983] [2024-11-28 04:06:51,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:06:51,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:06:51,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:06:51,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:06:51,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:06:51,174 INFO L87 Difference]: Start difference. First operand has 468 states, 357 states have (on average 1.3053221288515406) internal successors, (466), 372 states have internal predecessors, (466), 84 states have call successors, (84), 26 states have call predecessors, (84), 25 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:06:51,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:06:51,322 INFO L93 Difference]: Finished difference Result 931 states and 1273 transitions. [2024-11-28 04:06:51,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:06:51,327 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2024-11-28 04:06:51,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:06:51,355 INFO L225 Difference]: With dead ends: 931 [2024-11-28 04:06:51,356 INFO L226 Difference]: Without dead ends: 450 [2024-11-28 04:06:51,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:06:51,372 INFO L435 NwaCegarLoop]: 624 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:06:51,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:06:51,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2024-11-28 04:06:51,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2024-11-28 04:06:51,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 346 states have (on average 1.2745664739884393) internal successors, (441), 354 states have internal predecessors, (441), 79 states have call successors, (79), 25 states have call predecessors, (79), 24 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-28 04:06:51,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 597 transitions. [2024-11-28 04:06:51,514 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 597 transitions. Word has length 46 [2024-11-28 04:06:51,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:06:51,516 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 597 transitions. [2024-11-28 04:06:51,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:06:51,517 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 597 transitions. [2024-11-28 04:06:51,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-28 04:06:51,520 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:06:51,521 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:06:51,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:06:51,521 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:06:51,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:06:51,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1066469151, now seen corresponding path program 1 times [2024-11-28 04:06:51,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:06:51,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640020614] [2024-11-28 04:06:51,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:51,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:06:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:06:52,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:06:52,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640020614] [2024-11-28 04:06:52,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640020614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:06:52,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:06:52,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:06:52,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021139044] [2024-11-28 04:06:52,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:06:52,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:06:52,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:06:52,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:06:52,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:06:52,289 INFO L87 Difference]: Start difference. First operand 450 states and 597 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-28 04:06:56,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:06:56,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:06:56,505 INFO L93 Difference]: Finished difference Result 1295 states and 1726 transitions. [2024-11-28 04:06:56,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:06:56,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2024-11-28 04:06:56,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:06:56,521 INFO L225 Difference]: With dead ends: 1295 [2024-11-28 04:06:56,525 INFO L226 Difference]: Without dead ends: 859 [2024-11-28 04:06:56,528 INFO L434 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 [2024-11-28 04:06:56,532 INFO L435 NwaCegarLoop]: 598 mSDtfsCounter, 546 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:06:56,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1178 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 04:06:56,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2024-11-28 04:06:56,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 856. [2024-11-28 04:06:56,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 661 states have (on average 1.2783661119515886) internal successors, (845), 676 states have internal predecessors, (845), 149 states have call successors, (149), 46 states have call predecessors, (149), 45 states have return successors, (147), 147 states have call predecessors, (147), 147 states have call successors, (147) [2024-11-28 04:06:56,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1141 transitions. [2024-11-28 04:06:56,650 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1141 transitions. Word has length 46 [2024-11-28 04:06:56,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:06:56,652 INFO L471 AbstractCegarLoop]: Abstraction has 856 states and 1141 transitions. [2024-11-28 04:06:56,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-28 04:06:56,652 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1141 transitions. [2024-11-28 04:06:56,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 04:06:56,656 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:06:56,657 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:06:56,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:06:56,657 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:06:56,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:06:56,658 INFO L85 PathProgramCache]: Analyzing trace with hash 334290039, now seen corresponding path program 1 times [2024-11-28 04:06:56,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:06:56,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479930461] [2024-11-28 04:06:56,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:56,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:06:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:57,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:06:57,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:06:57,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479930461] [2024-11-28 04:06:57,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479930461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:06:57,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:06:57,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:06:57,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948645138] [2024-11-28 04:06:57,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:06:57,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:06:57,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:06:57,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:06:57,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:06:57,027 INFO L87 Difference]: Start difference. First operand 856 states and 1141 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:06:57,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:06:57,184 INFO L93 Difference]: Finished difference Result 1682 states and 2243 transitions. [2024-11-28 04:06:57,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:06:57,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2024-11-28 04:06:57,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:06:57,207 INFO L225 Difference]: With dead ends: 1682 [2024-11-28 04:06:57,210 INFO L226 Difference]: Without dead ends: 1673 [2024-11-28 04:06:57,212 INFO L434 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 [2024-11-28 04:06:57,213 INFO L435 NwaCegarLoop]: 605 mSDtfsCounter, 569 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:06:57,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 1171 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:06:57,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2024-11-28 04:06:57,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1673. [2024-11-28 04:06:57,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1294 states have (on average 1.278207109737249) internal successors, (1654), 1323 states have internal predecessors, (1654), 289 states have call successors, (289), 90 states have call predecessors, (289), 89 states have return successors, (287), 287 states have call predecessors, (287), 287 states have call successors, (287) [2024-11-28 04:06:57,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2230 transitions. [2024-11-28 04:06:57,411 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2230 transitions. Word has length 49 [2024-11-28 04:06:57,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:06:57,412 INFO L471 AbstractCegarLoop]: Abstraction has 1673 states and 2230 transitions. [2024-11-28 04:06:57,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:06:57,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2230 transitions. [2024-11-28 04:06:57,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 04:06:57,427 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:06:57,428 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:06:57,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:06:57,428 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:06:57,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:06:57,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1595417057, now seen corresponding path program 1 times [2024-11-28 04:06:57,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:06:57,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901358491] [2024-11-28 04:06:57,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:57,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:06:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:57,878 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:06:57,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:06:57,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901358491] [2024-11-28 04:06:57,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901358491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:06:57,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:06:57,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:06:57,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926190627] [2024-11-28 04:06:57,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:06:57,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:06:57,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:06:57,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:06:57,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:06:57,881 INFO L87 Difference]: Start difference. First operand 1673 states and 2230 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:06:58,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:06:58,118 INFO L93 Difference]: Finished difference Result 4770 states and 6346 transitions. [2024-11-28 04:06:58,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:06:58,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2024-11-28 04:06:58,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:06:58,148 INFO L225 Difference]: With dead ends: 4770 [2024-11-28 04:06:58,149 INFO L226 Difference]: Without dead ends: 3111 [2024-11-28 04:06:58,158 INFO L434 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 [2024-11-28 04:06:58,159 INFO L435 NwaCegarLoop]: 610 mSDtfsCounter, 504 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:06:58,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 1181 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:06:58,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2024-11-28 04:06:58,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 3103. [2024-11-28 04:06:58,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3103 states, 2392 states have (on average 1.2767558528428093) internal successors, (3054), 2449 states have internal predecessors, (3054), 535 states have call successors, (535), 176 states have call predecessors, (535), 175 states have return successors, (533), 533 states have call predecessors, (533), 533 states have call successors, (533) [2024-11-28 04:06:58,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3103 states to 3103 states and 4122 transitions. [2024-11-28 04:06:58,430 INFO L78 Accepts]: Start accepts. Automaton has 3103 states and 4122 transitions. Word has length 110 [2024-11-28 04:06:58,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:06:58,431 INFO L471 AbstractCegarLoop]: Abstraction has 3103 states and 4122 transitions. [2024-11-28 04:06:58,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:06:58,432 INFO L276 IsEmpty]: Start isEmpty. Operand 3103 states and 4122 transitions. [2024-11-28 04:06:58,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-28 04:06:58,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:06:58,448 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:06:58,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:06:58,448 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:06:58,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:06:58,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1669692005, now seen corresponding path program 1 times [2024-11-28 04:06:58,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:06:58,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501844389] [2024-11-28 04:06:58,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:58,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:06:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-28 04:06:59,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:06:59,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501844389] [2024-11-28 04:06:59,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501844389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:06:59,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:06:59,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:06:59,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542227062] [2024-11-28 04:06:59,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:06:59,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:06:59,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:06:59,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:06:59,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:06:59,057 INFO L87 Difference]: Start difference. First operand 3103 states and 4122 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:07:03,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:07:03,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:03,393 INFO L93 Difference]: Finished difference Result 6199 states and 8239 transitions. [2024-11-28 04:07:03,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:07:03,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 153 [2024-11-28 04:07:03,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:03,425 INFO L225 Difference]: With dead ends: 6199 [2024-11-28 04:07:03,425 INFO L226 Difference]: Without dead ends: 3114 [2024-11-28 04:07:03,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:07:03,441 INFO L435 NwaCegarLoop]: 598 mSDtfsCounter, 6 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:03,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1784 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 04:07:03,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2024-11-28 04:07:03,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 3106. [2024-11-28 04:07:03,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3106 states, 2395 states have (on average 1.2755741127348643) internal successors, (3055), 2452 states have internal predecessors, (3055), 535 states have call successors, (535), 176 states have call predecessors, (535), 175 states have return successors, (533), 533 states have call predecessors, (533), 533 states have call successors, (533) [2024-11-28 04:07:03,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 4123 transitions. [2024-11-28 04:07:03,677 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 4123 transitions. Word has length 153 [2024-11-28 04:07:03,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:03,677 INFO L471 AbstractCegarLoop]: Abstraction has 3106 states and 4123 transitions. [2024-11-28 04:07:03,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:07:03,680 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 4123 transitions. [2024-11-28 04:07:03,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-28 04:07:03,692 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:03,693 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:03,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:07:03,693 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:03,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:03,694 INFO L85 PathProgramCache]: Analyzing trace with hash 319297636, now seen corresponding path program 1 times [2024-11-28 04:07:03,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:03,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482706685] [2024-11-28 04:07:03,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:03,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:07:04,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:04,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482706685] [2024-11-28 04:07:04,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482706685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:04,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:04,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:07:04,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892195367] [2024-11-28 04:07:04,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:04,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:07:04,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:04,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:07:04,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:07:04,921 INFO L87 Difference]: Start difference. First operand 3106 states and 4123 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:07:05,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:05,144 INFO L93 Difference]: Finished difference Result 6208 states and 8293 transitions. [2024-11-28 04:07:05,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:07:05,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 154 [2024-11-28 04:07:05,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:05,189 INFO L225 Difference]: With dead ends: 6208 [2024-11-28 04:07:05,189 INFO L226 Difference]: Without dead ends: 3122 [2024-11-28 04:07:05,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:07:05,206 INFO L435 NwaCegarLoop]: 596 mSDtfsCounter, 0 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:05,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2375 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:07:05,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2024-11-28 04:07:05,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 3110. [2024-11-28 04:07:05,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3110 states, 2397 states have (on average 1.2753441802252816) internal successors, (3057), 2456 states have internal predecessors, (3057), 535 states have call successors, (535), 176 states have call predecessors, (535), 177 states have return successors, (549), 533 states have call predecessors, (549), 533 states have call successors, (549) [2024-11-28 04:07:05,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 4141 transitions. [2024-11-28 04:07:05,576 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 4141 transitions. Word has length 154 [2024-11-28 04:07:05,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:05,578 INFO L471 AbstractCegarLoop]: Abstraction has 3110 states and 4141 transitions. [2024-11-28 04:07:05,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:07:05,579 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 4141 transitions. [2024-11-28 04:07:05,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-28 04:07:05,593 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:05,593 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:07:05,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:07:05,594 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:05,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:05,595 INFO L85 PathProgramCache]: Analyzing trace with hash 2081756232, now seen corresponding path program 1 times [2024-11-28 04:07:05,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:05,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000256875] [2024-11-28 04:07:05,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:05,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:06,705 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-28 04:07:06,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:06,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000256875] [2024-11-28 04:07:06,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000256875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:06,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631575878] [2024-11-28 04:07:06,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:06,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:06,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:06,710 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:06,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:07:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:07,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:07:07,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:07:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-28 04:07:08,099 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:07:08,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631575878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:08,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:07:08,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:07:08,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464539822] [2024-11-28 04:07:08,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:08,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:07:08,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:08,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:07:08,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:07:08,102 INFO L87 Difference]: Start difference. First operand 3110 states and 4141 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 04:07:08,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:08,317 INFO L93 Difference]: Finished difference Result 6208 states and 8270 transitions. [2024-11-28 04:07:08,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:07:08,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 175 [2024-11-28 04:07:08,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:08,347 INFO L225 Difference]: With dead ends: 6208 [2024-11-28 04:07:08,348 INFO L226 Difference]: Without dead ends: 3111 [2024-11-28 04:07:08,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:07:08,364 INFO L435 NwaCegarLoop]: 595 mSDtfsCounter, 0 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:08,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1779 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:07:08,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2024-11-28 04:07:08,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 3111. [2024-11-28 04:07:08,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3111 states, 2398 states have (on average 1.275229357798165) internal successors, (3058), 2457 states have internal predecessors, (3058), 535 states have call successors, (535), 176 states have call predecessors, (535), 177 states have return successors, (549), 533 states have call predecessors, (549), 533 states have call successors, (549) [2024-11-28 04:07:08,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 4142 transitions. [2024-11-28 04:07:08,587 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 4142 transitions. Word has length 175 [2024-11-28 04:07:08,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:08,588 INFO L471 AbstractCegarLoop]: Abstraction has 3111 states and 4142 transitions. [2024-11-28 04:07:08,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 04:07:08,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 4142 transitions. [2024-11-28 04:07:08,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-28 04:07:08,598 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:08,598 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:07:08,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:07:08,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:08,800 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:08,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:08,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1027532278, now seen corresponding path program 1 times [2024-11-28 04:07:08,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:08,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684581570] [2024-11-28 04:07:08,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:08,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:10,025 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-28 04:07:10,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:10,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684581570] [2024-11-28 04:07:10,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684581570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:10,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701040292] [2024-11-28 04:07:10,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:10,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:10,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:10,029 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:10,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:07:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:11,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:07:11,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:07:11,912 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-28 04:07:11,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:07:12,404 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-28 04:07:12,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701040292] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:07:12,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:07:12,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 12 [2024-11-28 04:07:12,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290261741] [2024-11-28 04:07:12,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:07:12,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:07:12,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:12,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:07:12,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:07:12,409 INFO L87 Difference]: Start difference. First operand 3111 states and 4142 transitions. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-28 04:07:13,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:13,006 INFO L93 Difference]: Finished difference Result 6222 states and 8287 transitions. [2024-11-28 04:07:13,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:07:13,007 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 177 [2024-11-28 04:07:13,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:13,032 INFO L225 Difference]: With dead ends: 6222 [2024-11-28 04:07:13,032 INFO L226 Difference]: Without dead ends: 3121 [2024-11-28 04:07:13,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:07:13,046 INFO L435 NwaCegarLoop]: 592 mSDtfsCounter, 12 mSDsluCounter, 3542 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4134 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:13,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4134 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:07:13,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2024-11-28 04:07:13,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 3121. [2024-11-28 04:07:13,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3121 states, 2407 states have (on average 1.2746157041960948) internal successors, (3068), 2466 states have internal predecessors, (3068), 535 states have call successors, (535), 177 states have call predecessors, (535), 178 states have return successors, (549), 533 states have call predecessors, (549), 533 states have call successors, (549) [2024-11-28 04:07:13,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 4152 transitions. [2024-11-28 04:07:13,243 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 4152 transitions. Word has length 177 [2024-11-28 04:07:13,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:13,243 INFO L471 AbstractCegarLoop]: Abstraction has 3121 states and 4152 transitions. [2024-11-28 04:07:13,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-28 04:07:13,244 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 4152 transitions. [2024-11-28 04:07:13,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-28 04:07:13,254 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:13,255 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:07:13,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:07:13,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 04:07:13,459 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:13,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:13,459 INFO L85 PathProgramCache]: Analyzing trace with hash -863543768, now seen corresponding path program 2 times [2024-11-28 04:07:13,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:13,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469797296] [2024-11-28 04:07:13,460 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:07:13,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:13,957 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:07:13,957 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:07:14,957 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-28 04:07:14,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:14,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469797296] [2024-11-28 04:07:14,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469797296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:14,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907157586] [2024-11-28 04:07:14,960 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:07:14,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:14,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:14,962 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:14,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:12:27,595 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:12:27,595 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:12:27,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 04:12:27,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:27,802 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 55 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-28 04:12:27,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:12:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-28 04:12:28,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907157586] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:12:28,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:12:28,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-28 04:12:28,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094710168] [2024-11-28 04:12:28,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:12:28,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:12:28,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:28,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:12:28,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:12:28,334 INFO L87 Difference]: Start difference. First operand 3121 states and 4152 transitions. Second operand has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-28 04:12:28,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:28,852 INFO L93 Difference]: Finished difference Result 6229 states and 8293 transitions. [2024-11-28 04:12:28,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:12:28,853 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 181 [2024-11-28 04:12:28,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:28,877 INFO L225 Difference]: With dead ends: 6229 [2024-11-28 04:12:28,877 INFO L226 Difference]: Without dead ends: 3125 [2024-11-28 04:12:28,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:12:28,891 INFO L435 NwaCegarLoop]: 594 mSDtfsCounter, 6 mSDsluCounter, 4131 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4725 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:28,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4725 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:12:28,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2024-11-28 04:12:29,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3125. [2024-11-28 04:12:29,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 2411 states have (on average 1.2741600995437579) internal successors, (3072), 2470 states have internal predecessors, (3072), 535 states have call successors, (535), 177 states have call predecessors, (535), 178 states have return successors, (549), 533 states have call predecessors, (549), 533 states have call successors, (549) [2024-11-28 04:12:29,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4156 transitions. [2024-11-28 04:12:29,041 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4156 transitions. Word has length 181 [2024-11-28 04:12:29,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:29,043 INFO L471 AbstractCegarLoop]: Abstraction has 3125 states and 4156 transitions. [2024-11-28 04:12:29,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-28 04:12:29,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4156 transitions. [2024-11-28 04:12:29,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-28 04:12:29,054 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:29,054 INFO L218 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:12:29,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:12:29,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 04:12:29,255 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:29,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:29,255 INFO L85 PathProgramCache]: Analyzing trace with hash 99293800, now seen corresponding path program 3 times [2024-11-28 04:12:29,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:29,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370704756] [2024-11-28 04:12:29,256 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:12:29,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:30,010 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 04:12:30,010 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:12:31,020 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-28 04:12:31,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:31,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370704756] [2024-11-28 04:12:31,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370704756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:31,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794925173] [2024-11-28 04:12:31,022 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:12:31,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:31,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:31,024 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:31,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85607211-1b45-48a3-9528-2cfb7305da51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process