./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_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/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_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1 --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 [2024-12-02 10:57:59,274 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:57:59,328 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 10:57:59,333 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:57:59,334 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:57:59,355 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:57:59,355 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:57:59,356 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:57:59,356 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:57:59,356 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:57:59,356 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:57:59,356 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:57:59,357 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:57:59,357 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:57:59,357 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:57:59,357 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:57:59,357 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:57:59,357 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:57:59,357 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:57:59,357 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:57:59,357 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:57:59,358 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:57:59,358 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:57:59,358 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:57:59,358 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:57:59,358 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:57:59,358 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:57:59,358 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:57:59,358 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:57:59,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:57:59,359 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:57:59,359 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:57:59,359 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:57:59,359 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:57:59,359 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:57:59,359 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:57:59,359 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:57:59,359 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:57:59,359 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:57:59,360 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:57:59,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:57:59,360 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:57:59,360 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:57:59,360 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:57:59,360 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:57:59,360 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_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1 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 [2024-12-02 10:57:59,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:57:59,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:57:59,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:57:59,575 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:57:59,575 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:57:59,576 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2024-12-02 10:58:02,207 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/data/311bc6b01/c2e8ae46d1f44d97aa4692c11bdae3cf/FLAG116226acc [2024-12-02 10:58:02,558 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:58:02,558 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2024-12-02 10:58:02,580 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/data/311bc6b01/c2e8ae46d1f44d97aa4692c11bdae3cf/FLAG116226acc [2024-12-02 10:58:02,792 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/data/311bc6b01/c2e8ae46d1f44d97aa4692c11bdae3cf [2024-12-02 10:58:02,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:58:02,796 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:58:02,797 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:58:02,797 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:58:02,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:58:02,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:58:02" (1/1) ... [2024-12-02 10:58:02,803 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fc487b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:02, skipping insertion in model container [2024-12-02 10:58:02,803 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:58:02" (1/1) ... [2024-12-02 10:58:02,857 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:58:03,494 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_6eb65313-90bc-47a3-876e-dce192fb58a7/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] [2024-12-02 10:58:03,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:58:03,536 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:58:03,618 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] [2024-12-02 10:58:03,634 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] [2024-12-02 10:58:03,635 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] [2024-12-02 10:58:03,659 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] [2024-12-02 10:58:03,679 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] [2024-12-02 10:58:03,685 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 *)"/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] [2024-12-02 10:58:03,737 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] [2024-12-02 10:58:03,751 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_6eb65313-90bc-47a3-876e-dce192fb58a7/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] [2024-12-02 10:58:03,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:58:03,795 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:58:03,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:03 WrapperNode [2024-12-02 10:58:03,796 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:58:03,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:58:03,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:58:03,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:58:03,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:03" (1/1) ... [2024-12-02 10:58:03,831 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:03" (1/1) ... [2024-12-02 10:58:03,897 INFO L138 Inliner]: procedures = 143, calls = 525, calls flagged for inlining = 83, calls inlined = 83, statements flattened = 1744 [2024-12-02 10:58:03,897 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:58:03,898 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:58:03,898 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:58:03,898 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:58:03,906 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:03" (1/1) ... [2024-12-02 10:58:03,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:03" (1/1) ... [2024-12-02 10:58:03,919 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:03" (1/1) ... [2024-12-02 10:58:04,167 INFO L175 MemorySlicer]: Split 263 memory accesses to 10 slices as follows [2, 8, 4, 8, 1, 1, 21, 1, 25, 192]. 73 percent of accesses are in the largest equivalence class. The 31 initializations are split as follows [2, 8, 0, 8, 0, 0, 0, 0, 0, 13]. The 91 writes are split as follows [0, 0, 2, 0, 0, 1, 21, 1, 3, 63]. [2024-12-02 10:58:04,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:03" (1/1) ... [2024-12-02 10:58:04,168 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:03" (1/1) ... [2024-12-02 10:58:04,219 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:03" (1/1) ... [2024-12-02 10:58:04,221 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:03" (1/1) ... [2024-12-02 10:58:04,228 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:03" (1/1) ... [2024-12-02 10:58:04,235 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:03" (1/1) ... [2024-12-02 10:58:04,241 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:03" (1/1) ... [2024-12-02 10:58:04,254 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:58:04,254 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:58:04,255 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:58:04,255 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:58:04,256 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:03" (1/1) ... [2024-12-02 10:58:04,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:58:04,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:58:04,285 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:58:04,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:58:04,312 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2024-12-02 10:58:04,312 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segment_size [2024-12-02 10:58:04,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 10:58:04,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 10:58:04,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 10:58:04,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 10:58:04,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 10:58:04,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 10:58:04,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-12-02 10:58:04,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-12-02 10:58:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-12-02 10:58:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-12-02 10:58:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2024-12-02 10:58:04,313 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2024-12-02 10:58:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 10:58:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 10:58:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 10:58:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 10:58:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 10:58:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 10:58:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-12-02 10:58:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-12-02 10:58:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-12-02 10:58:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-12-02 10:58:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-12-02 10:58:04,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-12-02 10:58:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 10:58:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 10:58:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 10:58:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 10:58:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 10:58:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 10:58:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 10:58:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 10:58:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-12-02 10:58:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-12-02 10:58:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-12-02 10:58:04,314 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-12-02 10:58:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure req_get_ioprio [2024-12-02 10:58:04,315 INFO L138 BoogieDeclarations]: Found implementation of procedure req_get_ioprio [2024-12-02 10:58:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2024-12-02 10:58:04,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2024-12-02 10:58:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-12-02 10:58:04,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-12-02 10:58:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free [2024-12-02 10:58:04,315 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_free [2024-12-02 10:58:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_buf [2024-12-02 10:58:04,315 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_buf [2024-12-02 10:58:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-12-02 10:58:04,315 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-12-02 10:58:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 10:58:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 10:58:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 10:58:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 10:58:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 10:58:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 10:58:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 10:58:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-12-02 10:58:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-12-02 10:58:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-12-02 10:58:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-12-02 10:58:04,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-12-02 10:58:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-12-02 10:58:04,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-12-02 10:58:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure index_to_minor [2024-12-02 10:58:04,316 INFO L138 BoogieDeclarations]: Found implementation of procedure index_to_minor [2024-12-02 10:58:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-12-02 10:58:04,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-12-02 10:58:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 10:58:04,316 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 10:58:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 10:58:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-12-02 10:58:04,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-12-02 10:58:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2024-12-02 10:58:04,317 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2024-12-02 10:58:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:58:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2024-12-02 10:58:04,317 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2024-12-02 10:58:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 10:58:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 10:58:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 10:58:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 10:58:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 10:58:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 10:58:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 10:58:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 10:58:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-12-02 10:58:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-12-02 10:58:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-12-02 10:58:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-12-02 10:58:04,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-12-02 10:58:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2024-12-02 10:58:04,318 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2024-12-02 10:58:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_destroy [2024-12-02 10:58:04,318 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_destroy [2024-12-02 10:58:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 10:58:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 10:58:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 10:58:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 10:58:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 10:58:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 10:58:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 10:58:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-12-02 10:58:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-12-02 10:58:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-12-02 10:58:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2024-12-02 10:58:04,319 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2024-12-02 10:58:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2024-12-02 10:58:04,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2024-12-02 10:58:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 10:58:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2024-12-02 10:58:04,319 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2024-12-02 10:58:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_ordered [2024-12-02 10:58:04,319 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_ordered [2024-12-02 10:58:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:58:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 10:58:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 10:58:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 10:58:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 10:58:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 10:58:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 10:58:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 10:58:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 10:58:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 10:58:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:58:04,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:58:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2024-12-02 10:58:04,320 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2024-12-02 10:58:04,701 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:58:04,703 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:58:04,758 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-12-02 10:58:10,124 INFO L? ?]: Removed 975 outVars from TransFormulas that were not future-live. [2024-12-02 10:58:10,124 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:58:10,145 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:58:10,145 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 10:58:10,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:58:10 BoogieIcfgContainer [2024-12-02 10:58:10,146 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:58:10,175 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:58:10,175 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:58:10,179 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:58:10,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:58:02" (1/3) ... [2024-12-02 10:58:10,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26231e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:58:10, skipping insertion in model container [2024-12-02 10:58:10,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:03" (2/3) ... [2024-12-02 10:58:10,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26231e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:58:10, skipping insertion in model container [2024-12-02 10:58:10,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:58:10" (3/3) ... [2024-12-02 10:58:10,182 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 [2024-12-02 10:58:10,197 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:58:10,198 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. [2024-12-02 10:58:10,261 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:58:10,272 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;@36de7d13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:58:10,272 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 10:58:10,278 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) [2024-12-02 10:58:10,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-12-02 10:58:10,286 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:58:10,287 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] [2024-12-02 10:58:10,287 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:58:10,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:58:10,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1910474653, now seen corresponding path program 1 times [2024-12-02 10:58:10,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:58:10,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273858023] [2024-12-02 10:58:10,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:58:10,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:58:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:58:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 10:58:10,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:58:10,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273858023] [2024-12-02 10:58:10,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273858023] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:58:10,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:58:10,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:58:10,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140187626] [2024-12-02 10:58:10,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:58:10,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 10:58:10,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:58:10,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 10:58:10,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 10:58:10,717 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) [2024-12-02 10:58:10,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:58:10,785 INFO L93 Difference]: Finished difference Result 931 states and 1273 transitions. [2024-12-02 10:58:10,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 10:58:10,786 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 [2024-12-02 10:58:10,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:58:10,797 INFO L225 Difference]: With dead ends: 931 [2024-12-02 10:58:10,798 INFO L226 Difference]: Without dead ends: 450 [2024-12-02 10:58:10,803 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 [2024-12-02 10:58:10,806 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 [2024-12-02 10:58:10,807 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] [2024-12-02 10:58:10,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2024-12-02 10:58:10,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2024-12-02 10:58:10,861 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) [2024-12-02 10:58:10,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 597 transitions. [2024-12-02 10:58:10,871 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 597 transitions. Word has length 46 [2024-12-02 10:58:10,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:58:10,872 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 597 transitions. [2024-12-02 10:58:10,872 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) [2024-12-02 10:58:10,872 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 597 transitions. [2024-12-02 10:58:10,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-12-02 10:58:10,874 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:58:10,874 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] [2024-12-02 10:58:10,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 10:58:10,874 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:58:10,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:58:10,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1066469151, now seen corresponding path program 1 times [2024-12-02 10:58:10,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:58:10,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139921707] [2024-12-02 10:58:10,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:58:10,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:58:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:58:11,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 10:58:11,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:58:11,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139921707] [2024-12-02 10:58:11,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139921707] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:58:11,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:58:11,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:58:11,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047855801] [2024-12-02 10:58:11,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:58:11,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:58:11,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:58:11,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:58:11,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:58:11,230 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) [2024-12-02 10:58:15,240 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 [] [2024-12-02 10:58:15,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:58:15,326 INFO L93 Difference]: Finished difference Result 1295 states and 1726 transitions. [2024-12-02 10:58:15,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:58:15,327 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 [2024-12-02 10:58:15,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:58:15,334 INFO L225 Difference]: With dead ends: 1295 [2024-12-02 10:58:15,334 INFO L226 Difference]: Without dead ends: 859 [2024-12-02 10:58:15,336 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 [2024-12-02 10:58:15,337 INFO L435 NwaCegarLoop]: 598 mSDtfsCounter, 546 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s 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, 4.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:58:15,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1178 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2024-12-02 10:58:15,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2024-12-02 10:58:15,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 856. [2024-12-02 10:58:15,383 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) [2024-12-02 10:58:15,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1141 transitions. [2024-12-02 10:58:15,392 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1141 transitions. Word has length 46 [2024-12-02 10:58:15,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:58:15,392 INFO L471 AbstractCegarLoop]: Abstraction has 856 states and 1141 transitions. [2024-12-02 10:58:15,393 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) [2024-12-02 10:58:15,393 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1141 transitions. [2024-12-02 10:58:15,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 10:58:15,394 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:58:15,394 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] [2024-12-02 10:58:15,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 10:58:15,395 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:58:15,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:58:15,395 INFO L85 PathProgramCache]: Analyzing trace with hash 334290039, now seen corresponding path program 1 times [2024-12-02 10:58:15,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:58:15,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769277072] [2024-12-02 10:58:15,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:58:15,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:58:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:58:15,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 10:58:15,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:58:15,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769277072] [2024-12-02 10:58:15,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769277072] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:58:15,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:58:15,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:58:15,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178416969] [2024-12-02 10:58:15,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:58:15,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:58:15,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:58:15,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:58:15,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:58:15,642 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) [2024-12-02 10:58:15,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:58:15,740 INFO L93 Difference]: Finished difference Result 1682 states and 2243 transitions. [2024-12-02 10:58:15,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:58:15,741 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 [2024-12-02 10:58:15,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:58:15,752 INFO L225 Difference]: With dead ends: 1682 [2024-12-02 10:58:15,752 INFO L226 Difference]: Without dead ends: 1673 [2024-12-02 10:58:15,753 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 [2024-12-02 10:58:15,754 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 [2024-12-02 10:58:15,754 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] [2024-12-02 10:58:15,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2024-12-02 10:58:15,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1673. [2024-12-02 10:58:15,831 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) [2024-12-02 10:58:15,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2230 transitions. [2024-12-02 10:58:15,847 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2230 transitions. Word has length 49 [2024-12-02 10:58:15,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:58:15,847 INFO L471 AbstractCegarLoop]: Abstraction has 1673 states and 2230 transitions. [2024-12-02 10:58:15,848 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) [2024-12-02 10:58:15,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2230 transitions. [2024-12-02 10:58:15,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 10:58:15,853 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:58:15,854 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] [2024-12-02 10:58:15,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 10:58:15,854 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:58:15,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:58:15,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1595417057, now seen corresponding path program 1 times [2024-12-02 10:58:15,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:58:15,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532751210] [2024-12-02 10:58:15,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:58:15,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:58:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:58:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 10:58:16,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:58:16,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532751210] [2024-12-02 10:58:16,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532751210] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:58:16,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:58:16,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:58:16,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692885227] [2024-12-02 10:58:16,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:58:16,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:58:16,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:58:16,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:58:16,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:58:16,118 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) [2024-12-02 10:58:16,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:58:16,280 INFO L93 Difference]: Finished difference Result 4770 states and 6346 transitions. [2024-12-02 10:58:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:58:16,281 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 [2024-12-02 10:58:16,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:58:16,311 INFO L225 Difference]: With dead ends: 4770 [2024-12-02 10:58:16,311 INFO L226 Difference]: Without dead ends: 3111 [2024-12-02 10:58:16,317 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 [2024-12-02 10:58:16,318 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 [2024-12-02 10:58:16,318 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] [2024-12-02 10:58:16,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2024-12-02 10:58:16,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 3103. [2024-12-02 10:58:16,455 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) [2024-12-02 10:58:16,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3103 states to 3103 states and 4122 transitions. [2024-12-02 10:58:16,482 INFO L78 Accepts]: Start accepts. Automaton has 3103 states and 4122 transitions. Word has length 110 [2024-12-02 10:58:16,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:58:16,482 INFO L471 AbstractCegarLoop]: Abstraction has 3103 states and 4122 transitions. [2024-12-02 10:58:16,482 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) [2024-12-02 10:58:16,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3103 states and 4122 transitions. [2024-12-02 10:58:16,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 10:58:16,490 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:58:16,490 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] [2024-12-02 10:58:16,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:58:16,491 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:58:16,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:58:16,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1669692005, now seen corresponding path program 1 times [2024-12-02 10:58:16,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:58:16,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647325409] [2024-12-02 10:58:16,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:58:16,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:58:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:58:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-12-02 10:58:16,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:58:16,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647325409] [2024-12-02 10:58:16,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647325409] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:58:16,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:58:16,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:58:16,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699554725] [2024-12-02 10:58:16,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:58:16,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:58:16,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:58:16,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:58:16,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:58:16,933 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) [2024-12-02 10:58:20,948 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 [] [2024-12-02 10:58:21,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:58:21,103 INFO L93 Difference]: Finished difference Result 6199 states and 8239 transitions. [2024-12-02 10:58:21,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:58:21,104 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 [2024-12-02 10:58:21,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:58:21,124 INFO L225 Difference]: With dead ends: 6199 [2024-12-02 10:58:21,124 INFO L226 Difference]: Without dead ends: 3114 [2024-12-02 10:58:21,135 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 [2024-12-02 10:58:21,136 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, 4.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:58:21,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1784 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2024-12-02 10:58:21,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2024-12-02 10:58:21,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 3106. [2024-12-02 10:58:21,259 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) [2024-12-02 10:58:21,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 4123 transitions. [2024-12-02 10:58:21,278 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 4123 transitions. Word has length 153 [2024-12-02 10:58:21,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:58:21,278 INFO L471 AbstractCegarLoop]: Abstraction has 3106 states and 4123 transitions. [2024-12-02 10:58:21,279 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) [2024-12-02 10:58:21,279 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 4123 transitions. [2024-12-02 10:58:21,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 10:58:21,285 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:58:21,285 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] [2024-12-02 10:58:21,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:58:21,286 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:58:21,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:58:21,286 INFO L85 PathProgramCache]: Analyzing trace with hash 319297636, now seen corresponding path program 1 times [2024-12-02 10:58:21,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:58:21,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873750113] [2024-12-02 10:58:21,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:58:21,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:58:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:58:22,151 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 10:58:22,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:58:22,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873750113] [2024-12-02 10:58:22,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873750113] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:58:22,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:58:22,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:58:22,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702197461] [2024-12-02 10:58:22,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:58:22,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:58:22,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:58:22,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:58:22,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:58:22,154 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) [2024-12-02 10:58:22,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:58:22,270 INFO L93 Difference]: Finished difference Result 6208 states and 8293 transitions. [2024-12-02 10:58:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:58:22,270 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 [2024-12-02 10:58:22,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:58:22,287 INFO L225 Difference]: With dead ends: 6208 [2024-12-02 10:58:22,287 INFO L226 Difference]: Without dead ends: 3122 [2024-12-02 10:58:22,295 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 [2024-12-02 10:58:22,295 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 [2024-12-02 10:58:22,296 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] [2024-12-02 10:58:22,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2024-12-02 10:58:22,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 3110. [2024-12-02 10:58:22,378 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) [2024-12-02 10:58:22,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 4141 transitions. [2024-12-02 10:58:22,391 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 4141 transitions. Word has length 154 [2024-12-02 10:58:22,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:58:22,391 INFO L471 AbstractCegarLoop]: Abstraction has 3110 states and 4141 transitions. [2024-12-02 10:58:22,392 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) [2024-12-02 10:58:22,392 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 4141 transitions. [2024-12-02 10:58:22,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 10:58:22,396 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:58:22,396 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] [2024-12-02 10:58:22,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 10:58:22,397 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:58:22,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:58:22,397 INFO L85 PathProgramCache]: Analyzing trace with hash 2081756232, now seen corresponding path program 1 times [2024-12-02 10:58:22,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:58:22,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953047007] [2024-12-02 10:58:22,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:58:22,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:58:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:58:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-12-02 10:58:22,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:58:22,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953047007] [2024-12-02 10:58:22,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953047007] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:58:22,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017128746] [2024-12-02 10:58:22,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:58:22,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:58:22,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:58:22,900 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:58:22,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:58:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:58:23,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 10:58:23,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:58:23,741 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-12-02 10:58:23,741 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:58:23,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017128746] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:58:23,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:58:23,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 10:58:23,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883107989] [2024-12-02 10:58:23,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:58:23,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:58:23,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:58:23,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:58:23,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:58:23,743 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) [2024-12-02 10:58:23,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:58:23,853 INFO L93 Difference]: Finished difference Result 6208 states and 8270 transitions. [2024-12-02 10:58:23,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:58:23,854 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 [2024-12-02 10:58:23,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:58:23,868 INFO L225 Difference]: With dead ends: 6208 [2024-12-02 10:58:23,868 INFO L226 Difference]: Without dead ends: 3111 [2024-12-02 10:58:23,874 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 [2024-12-02 10:58:23,875 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 [2024-12-02 10:58:23,875 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] [2024-12-02 10:58:23,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2024-12-02 10:58:23,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 3111. [2024-12-02 10:58:23,949 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) [2024-12-02 10:58:23,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 4142 transitions. [2024-12-02 10:58:23,963 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 4142 transitions. Word has length 175 [2024-12-02 10:58:23,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:58:23,963 INFO L471 AbstractCegarLoop]: Abstraction has 3111 states and 4142 transitions. [2024-12-02 10:58:23,963 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) [2024-12-02 10:58:23,963 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 4142 transitions. [2024-12-02 10:58:23,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-02 10:58:23,967 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:58:23,967 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] [2024-12-02 10:58:23,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:58:24,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 10:58:24,168 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:58:24,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:58:24,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1027532278, now seen corresponding path program 1 times [2024-12-02 10:58:24,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:58:24,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164322868] [2024-12-02 10:58:24,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:58:24,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:58:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:58:24,828 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-12-02 10:58:24,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:58:24,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164322868] [2024-12-02 10:58:24,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164322868] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:58:24,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284033150] [2024-12-02 10:58:24,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:58:24,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:58:24,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:58:24,830 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:58:24,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 10:58:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:58:25,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 10:58:25,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:58:25,809 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-12-02 10:58:25,809 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:58:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-12-02 10:58:26,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284033150] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:58:26,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:58:26,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-12-02 10:58:26,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234896893] [2024-12-02 10:58:26,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:58:26,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 10:58:26,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:58:26,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 10:58:26,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:58:26,073 INFO L87 Difference]: Start difference. First operand 3111 states and 4142 transitions. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 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) [2024-12-02 10:58:26,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:58:26,379 INFO L93 Difference]: Finished difference Result 6221 states and 8289 transitions. [2024-12-02 10:58:26,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 10:58:26,380 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 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 177 [2024-12-02 10:58:26,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:58:26,400 INFO L225 Difference]: With dead ends: 6221 [2024-12-02 10:58:26,401 INFO L226 Difference]: Without dead ends: 3123 [2024-12-02 10:58:26,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2024-12-02 10:58:26,412 INFO L435 NwaCegarLoop]: 594 mSDtfsCounter, 7 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:58:26,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1778 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:58:26,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3123 states. [2024-12-02 10:58:26,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3123 to 3121. [2024-12-02 10:58:26,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3121 states, 2407 states have (on average 1.2754466140423764) internal successors, (3070), 2466 states have internal predecessors, (3070), 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) [2024-12-02 10:58:26,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 4154 transitions. [2024-12-02 10:58:26,552 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 4154 transitions. Word has length 177 [2024-12-02 10:58:26,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:58:26,552 INFO L471 AbstractCegarLoop]: Abstraction has 3121 states and 4154 transitions. [2024-12-02 10:58:26,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 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) [2024-12-02 10:58:26,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 4154 transitions. [2024-12-02 10:58:26,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-12-02 10:58:26,560 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:58:26,560 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] [2024-12-02 10:58:26,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 10:58:26,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:58:26,760 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:58:26,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:58:26,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1124195432, now seen corresponding path program 2 times [2024-12-02 10:58:26,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:58:26,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204833967] [2024-12-02 10:58:26,761 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:58:26,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:58:27,064 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:58:27,064 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:58:27,678 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-12-02 10:58:27,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:58:27,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204833967] [2024-12-02 10:58:27,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204833967] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:58:27,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863018426] [2024-12-02 10:58:27,678 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:58:27,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:58:27,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:58:27,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:58:27,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 11:01:03,076 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:01:03,076 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:01:03,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 11:01:03,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 42 proven. 25 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-12-02 11:01:03,344 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:01:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-12-02 11:01:03,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863018426] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:01:03,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:01:03,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 6] total 21 [2024-12-02 11:01:03,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334799966] [2024-12-02 11:01:03,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:01:03,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 11:01:03,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:01:03,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 11:01:03,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-12-02 11:01:03,702 INFO L87 Difference]: Start difference. First operand 3121 states and 4154 transitions. Second operand has 21 states, 21 states have (on average 6.380952380952381) internal successors, (134), 21 states have internal predecessors, (134), 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) [2024-12-02 11:01:04,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:01:04,242 INFO L93 Difference]: Finished difference Result 6230 states and 8296 transitions. [2024-12-02 11:01:04,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 11:01:04,243 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.380952380952381) internal successors, (134), 21 states have internal predecessors, (134), 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 181 [2024-12-02 11:01:04,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:01:04,264 INFO L225 Difference]: With dead ends: 6230 [2024-12-02 11:01:04,264 INFO L226 Difference]: Without dead ends: 3124 [2024-12-02 11:01:04,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=863, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 11:01:04,274 INFO L435 NwaCegarLoop]: 592 mSDtfsCounter, 16 mSDsluCounter, 5904 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 6496 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:01:04,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 6496 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:01:04,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2024-12-02 11:01:04,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 3124. [2024-12-02 11:01:04,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3124 states, 2410 states have (on average 1.2738589211618256) internal successors, (3070), 2469 states have internal predecessors, (3070), 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) [2024-12-02 11:01:04,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 4154 transitions. [2024-12-02 11:01:04,406 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 4154 transitions. Word has length 181 [2024-12-02 11:01:04,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:01:04,406 INFO L471 AbstractCegarLoop]: Abstraction has 3124 states and 4154 transitions. [2024-12-02 11:01:04,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.380952380952381) internal successors, (134), 21 states have internal predecessors, (134), 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) [2024-12-02 11:01:04,406 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 4154 transitions. [2024-12-02 11:01:04,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 11:01:04,412 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:01:04,412 INFO L218 NwaCegarLoop]: trace histogram [9, 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] [2024-12-02 11:01:04,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 11:01:04,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:01:04,612 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:01:04,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:04,613 INFO L85 PathProgramCache]: Analyzing trace with hash -670363879, now seen corresponding path program 3 times [2024-12-02 11:01:04,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:01:04,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969613172] [2024-12-02 11:01:04,613 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 11:01:04,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:01:04,987 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-12-02 11:01:04,987 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:01:05,675 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-12-02 11:01:05,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:01:05,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969613172] [2024-12-02 11:01:05,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969613172] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:01:05,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927108932] [2024-12-02 11:01:05,676 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 11:01:05,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:01:05,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:05,678 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:01:05,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb65313-90bc-47a3-876e-dce192fb58a7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process