./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 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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-?-8fc3dc6-m [2025-03-17 08:28:13,549 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 08:28:13,602 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-17 08:28:13,610 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 08:28:13,613 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 08:28:13,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 08:28:13,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 08:28:13,634 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 08:28:13,635 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 08:28:13,635 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 08:28:13,635 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 08:28:13,635 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 08:28:13,636 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 08:28:13,636 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 08:28:13,636 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 08:28:13,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 08:28:13,636 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 08:28:13,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 08:28:13,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 08:28:13,636 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 08:28:13,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 08:28:13,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 08:28:13,636 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 08:28:13,636 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 08:28:13,636 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 08:28:13,636 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 08:28:13,636 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 08:28:13,636 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 08:28:13,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 08:28:13,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 08:28:13,636 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 08:28:13,636 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 08:28:13,637 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 08:28:13,637 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 08:28:13,637 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 08:28:13,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 08:28:13,637 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 08:28:13,637 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 08:28:13,638 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 08:28:13,638 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 08:28:13,638 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 [2025-03-17 08:28:13,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 08:28:13,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 08:28:13,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 08:28:13,885 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 08:28:13,885 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 08:28:13,886 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2025-03-17 08:28:15,022 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c1c5c36/14ae639bb5634879b04cf1ed025efc7a/FLAG6b2195905 [2025-03-17 08:28:15,471 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 08:28:15,471 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2025-03-17 08:28:15,500 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c1c5c36/14ae639bb5634879b04cf1ed025efc7a/FLAG6b2195905 [2025-03-17 08:28:15,591 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c1c5c36/14ae639bb5634879b04cf1ed025efc7a [2025-03-17 08:28:15,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 08:28:15,594 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 08:28:15,595 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 08:28:15,595 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 08:28:15,598 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 08:28:15,599 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 08:28:15" (1/1) ... [2025-03-17 08:28:15,600 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a9f603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:28:15, skipping insertion in model container [2025-03-17 08:28:15,601 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 08:28:15" (1/1) ... [2025-03-17 08:28:15,653 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 08:28:16,251 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/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] [2025-03-17 08:28:16,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 08:28:16,285 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 08:28:16,349 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] [2025-03-17 08:28:16,366 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] [2025-03-17 08:28:16,366 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] [2025-03-17 08:28:16,366 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] [2025-03-17 08:28:16,392 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] [2025-03-17 08:28:16,398 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] [2025-03-17 08:28:16,479 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] [2025-03-17 08:28:16,491 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/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] [2025-03-17 08:28:16,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 08:28:16,529 INFO L204 MainTranslator]: Completed translation [2025-03-17 08:28:16,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:28:16 WrapperNode [2025-03-17 08:28:16,529 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 08:28:16,530 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 08:28:16,530 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 08:28:16,530 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 08:28:16,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:28:16" (1/1) ... [2025-03-17 08:28:16,554 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:28:16" (1/1) ... [2025-03-17 08:28:16,613 INFO L138 Inliner]: procedures = 143, calls = 525, calls flagged for inlining = 83, calls inlined = 83, statements flattened = 1744 [2025-03-17 08:28:16,614 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 08:28:16,614 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 08:28:16,614 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 08:28:16,614 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 08:28:16,621 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:28:16" (1/1) ... [2025-03-17 08:28:16,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:28:16" (1/1) ... [2025-03-17 08:28:16,641 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:28:16" (1/1) ... [2025-03-17 08:28:16,831 INFO L175 MemorySlicer]: Split 263 memory accesses to 10 slices as follows [2, 1, 1, 1, 8, 8, 25, 21, 192, 4]. 73 percent of accesses are in the largest equivalence class. The 31 initializations are split as follows [2, 0, 0, 0, 8, 8, 0, 0, 13, 0]. The 91 writes are split as follows [0, 1, 0, 1, 0, 0, 3, 21, 63, 2]. [2025-03-17 08:28:16,832 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:28:16" (1/1) ... [2025-03-17 08:28:16,832 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:28:16" (1/1) ... [2025-03-17 08:28:16,865 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:28:16" (1/1) ... [2025-03-17 08:28:16,868 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:28:16" (1/1) ... [2025-03-17 08:28:16,874 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:28:16" (1/1) ... [2025-03-17 08:28:16,883 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:28:16" (1/1) ... [2025-03-17 08:28:16,894 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 08:28:16,895 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 08:28:16,895 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 08:28:16,896 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 08:28:16,896 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:28:16" (1/1) ... [2025-03-17 08:28:16,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 08:28:16,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 08:28:16,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 08:28:16,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 08:28:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2025-03-17 08:28:16,946 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segment_size [2025-03-17 08:28:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-17 08:28:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-17 08:28:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-17 08:28:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-17 08:28:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-17 08:28:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-17 08:28:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2025-03-17 08:28:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2025-03-17 08:28:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2025-03-17 08:28:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2025-03-17 08:28:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2025-03-17 08:28:16,947 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2025-03-17 08:28:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-17 08:28:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-17 08:28:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-17 08:28:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-17 08:28:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-17 08:28:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-17 08:28:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2025-03-17 08:28:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2025-03-17 08:28:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2025-03-17 08:28:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2025-03-17 08:28:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2025-03-17 08:28:16,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2025-03-17 08:28:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 08:28:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 08:28:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 08:28:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 08:28:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 08:28:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-17 08:28:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-17 08:28:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-17 08:28:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-03-17 08:28:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-03-17 08:28:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2025-03-17 08:28:16,950 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2025-03-17 08:28:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure req_get_ioprio [2025-03-17 08:28:16,950 INFO L138 BoogieDeclarations]: Found implementation of procedure req_get_ioprio [2025-03-17 08:28:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2025-03-17 08:28:16,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2025-03-17 08:28:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2025-03-17 08:28:16,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2025-03-17 08:28:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free [2025-03-17 08:28:16,950 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_free [2025-03-17 08:28:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_buf [2025-03-17 08:28:16,950 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_buf [2025-03-17 08:28:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2025-03-17 08:28:16,950 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2025-03-17 08:28:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2025-03-17 08:28:16,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2025-03-17 08:28:16,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure index_to_minor [2025-03-17 08:28:16,951 INFO L138 BoogieDeclarations]: Found implementation of procedure index_to_minor [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2025-03-17 08:28:16,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 08:28:16,951 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2025-03-17 08:28:16,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2025-03-17 08:28:16,951 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2025-03-17 08:28:16,951 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-17 08:28:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-03-17 08:28:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2025-03-17 08:28:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2025-03-17 08:28:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2025-03-17 08:28:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2025-03-17 08:28:16,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2025-03-17 08:28:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2025-03-17 08:28:16,952 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2025-03-17 08:28:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_destroy [2025-03-17 08:28:16,952 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_destroy [2025-03-17 08:28:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 08:28:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 08:28:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 08:28:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-17 08:28:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-17 08:28:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-17 08:28:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-03-17 08:28:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2025-03-17 08:28:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2025-03-17 08:28:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2025-03-17 08:28:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2025-03-17 08:28:16,952 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2025-03-17 08:28:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2025-03-17 08:28:16,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2025-03-17 08:28:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 08:28:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2025-03-17 08:28:16,955 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2025-03-17 08:28:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_ordered [2025-03-17 08:28:16,955 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_ordered [2025-03-17 08:28:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 08:28:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 08:28:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 08:28:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 08:28:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 08:28:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-17 08:28:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-17 08:28:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-17 08:28:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-17 08:28:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-17 08:28:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 08:28:16,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 08:28:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2025-03-17 08:28:16,956 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2025-03-17 08:28:17,293 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 08:28:17,295 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 08:28:17,353 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2025-03-17 08:28:17,361 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3197: havoc #t~mem53; [2025-03-17 08:28:17,468 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4358: havoc __phys_addr_#t~nondet404#1; [2025-03-17 08:28:17,774 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4397: havoc blk_peek_request_#t~ret411#1.base, blk_peek_request_#t~ret411#1.offset; [2025-03-17 08:28:17,774 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3498: call ULTIMATE.dealloc(blk_done_~#len~0#1.base, blk_done_~#len~0#1.offset);havoc blk_done_~#len~0#1.base, blk_done_~#len~0#1.offset; [2025-03-17 08:28:17,775 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4432: havoc blk_rq_map_sg_#t~nondet413#1; [2025-03-17 08:28:17,775 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4499: havoc virtqueue_add_buf_gfp_#t~nondet419#1; [2025-03-17 08:28:17,775 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3211: havoc blk_rq_pos_#t~mem65#1; [2025-03-17 08:28:17,775 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4369: havoc _raw_spin_lock_irqsave_#t~nondet406#1; [2025-03-17 08:28:17,775 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4502: havoc virtqueue_get_buf_#t~ret420#1.base, virtqueue_get_buf_#t~ret420#1.offset; [2025-03-17 08:28:17,775 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4453: havoc mempool_alloc_#t~ret414#1.base, mempool_alloc_#t~ret414#1.offset; [2025-03-17 08:28:17,798 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3127: havoc list_empty_#t~mem12#1.base, list_empty_#t~mem12#1.offset; [2025-03-17 08:28:17,814 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4425: havoc #t~nondet412; [2025-03-17 08:28:22,325 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3489: havoc virtio_find_single_vq_#t~mem162#1.base, virtio_find_single_vq_#t~mem162#1.offset;call ULTIMATE.dealloc(virtio_find_single_vq_~#callbacks~0#1.base, virtio_find_single_vq_~#callbacks~0#1.offset);havoc virtio_find_single_vq_~#callbacks~0#1.base, virtio_find_single_vq_~#callbacks~0#1.offset;call ULTIMATE.dealloc(virtio_find_single_vq_~#names~0#1.base, virtio_find_single_vq_~#names~0#1.offset);havoc virtio_find_single_vq_~#names~0#1.base, virtio_find_single_vq_~#names~0#1.offset;call ULTIMATE.dealloc(virtio_find_single_vq_~#vq~0#1.base, virtio_find_single_vq_~#vq~0#1.offset);havoc virtio_find_single_vq_~#vq~0#1.base, virtio_find_single_vq_~#vq~0#1.offset; [2025-03-17 08:28:22,325 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4480: havoc scsi_cmd_ioctl_#t~nondet418#1; [2025-03-17 08:28:22,325 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4381: havoc bio_map_kern_#t~ret408#1.base, bio_map_kern_#t~ret408#1.offset; [2025-03-17 08:28:22,325 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4365: havoc _copy_to_user_#t~nondet405#1; [2025-03-17 08:28:22,325 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3344: havoc __kmalloc_#t~ret115#1.base, __kmalloc_#t~ret115#1.offset; [2025-03-17 08:28:22,326 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4072: call ULTIMATE.dealloc(main_~#ldvarg1~0#1.base, main_~#ldvarg1~0#1.offset);havoc main_~#ldvarg1~0#1.base, main_~#ldvarg1~0#1.offset;call ULTIMATE.dealloc(main_~#ldvarg3~0#1.base, main_~#ldvarg3~0#1.offset);havoc main_~#ldvarg3~0#1.base, main_~#ldvarg3~0#1.offset; [2025-03-17 08:28:22,326 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3759: call ULTIMATE.dealloc(virtblk_ioctl_~#id_str~0#1.base, virtblk_ioctl_~#id_str~0#1.offset);havoc virtblk_ioctl_~#id_str~0#1.base, virtblk_ioctl_~#id_str~0#1.offset; [2025-03-17 08:28:22,326 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4472: havoc register_blkdev_#t~nondet416#1; [2025-03-17 08:28:22,326 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4456: havoc mempool_create_#t~ret415#1.base, mempool_create_#t~ret415#1.offset; [2025-03-17 08:28:22,326 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4391: havoc blk_execute_rq_#t~nondet409#1; [2025-03-17 08:28:22,326 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3831: call ULTIMATE.dealloc(virtblk_probe_~#cap~0#1.base, virtblk_probe_~#cap~0#1.offset);havoc virtblk_probe_~#cap~0#1.base, virtblk_probe_~#cap~0#1.offset;call ULTIMATE.dealloc(virtblk_probe_~#v~0#1.base, virtblk_probe_~#v~0#1.offset);havoc virtblk_probe_~#v~0#1.base, virtblk_probe_~#v~0#1.offset;call ULTIMATE.dealloc(virtblk_probe_~#blk_size~0#1.base, virtblk_probe_~#blk_size~0#1.offset);havoc virtblk_probe_~#blk_size~0#1.base, virtblk_probe_~#blk_size~0#1.offset;call ULTIMATE.dealloc(virtblk_probe_~#sg_elems~0#1.base, virtblk_probe_~#sg_elems~0#1.offset);havoc virtblk_probe_~#sg_elems~0#1.base, virtblk_probe_~#sg_elems~0#1.offset;call ULTIMATE.dealloc(virtblk_probe_~#opt_io_size~0#1.base, virtblk_probe_~#opt_io_size~0#1.offset);havoc virtblk_probe_~#opt_io_size~0#1.base, virtblk_probe_~#opt_io_size~0#1.offset;call ULTIMATE.dealloc(virtblk_probe_~#min_io_size~0#1.base, virtblk_probe_~#min_io_size~0#1.offset);havoc virtblk_probe_~#min_io_size~0#1.base, virtblk_probe_~#min_io_size~0#1.offset;call ULTIMATE.dealloc(virtblk_probe_~#physical_block_exp~0#1.base, virtblk_probe_~#physical_block_exp~0#1.offset);havoc virtblk_probe_~#physical_block_exp~0#1.base, virtblk_probe_~#physical_block_exp~0#1.offset;call ULTIMATE.dealloc(virtblk_probe_~#alignment_offset~0#1.base, virtblk_probe_~#alignment_offset~0#1.offset);havoc virtblk_probe_~#alignment_offset~0#1.base, virtblk_probe_~#alignment_offset~0#1.offset;call ULTIMATE.dealloc(virtblk_probe_~#__key~0#1.base, virtblk_probe_~#__key~0#1.offset);havoc virtblk_probe_~#__key~0#1.base, virtblk_probe_~#__key~0#1.offset; [2025-03-17 08:28:22,326 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4476: havoc register_virtio_driver_#t~nondet417#1; [2025-03-17 08:28:22,326 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3799: call ULTIMATE.dealloc(virtblk_getgeo_~#vgeo~0#1.base, virtblk_getgeo_~#vgeo~0#1.offset);havoc virtblk_getgeo_~#vgeo~0#1.base, virtblk_getgeo_~#vgeo~0#1.offset; [2025-03-17 08:28:22,326 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3155: havoc get_capacity_#t~mem27#1; [2025-03-17 08:28:22,327 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4394: havoc blk_init_queue_#t~ret410#1.base, blk_init_queue_#t~ret410#1.offset; [2025-03-17 08:28:22,327 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4378: havoc alloc_disk_#t~ret407#1.base, alloc_disk_#t~ret407#1.offset; [2025-03-17 08:28:22,528 INFO L? ?]: Removed 695 outVars from TransFormulas that were not future-live. [2025-03-17 08:28:22,528 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 08:28:22,568 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 08:28:22,569 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2025-03-17 08:28:22,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 08:28:22 BoogieIcfgContainer [2025-03-17 08:28:22,570 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 08:28:22,572 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 08:28:22,573 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 08:28:22,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 08:28:22,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 08:28:15" (1/3) ... [2025-03-17 08:28:22,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9b457e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 08:28:22, skipping insertion in model container [2025-03-17 08:28:22,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:28:16" (2/3) ... [2025-03-17 08:28:22,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9b457e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 08:28:22, skipping insertion in model container [2025-03-17 08:28:22,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 08:28:22" (3/3) ... [2025-03-17 08:28:22,581 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 [2025-03-17 08:28:22,597 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 08:28:22,600 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, 415 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-17 08:28:22,678 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 08:28:22,691 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;@23c6a777, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 08:28:22,691 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 08:28:22,698 INFO L276 IsEmpty]: Start isEmpty. Operand has 414 states, 303 states have (on average 1.3597359735973598) internal successors, (412), 318 states have internal predecessors, (412), 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) [2025-03-17 08:28:22,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-17 08:28:22,708 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 08:28:22,708 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 08:28:22,709 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 08:28:22,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 08:28:22,715 INFO L85 PathProgramCache]: Analyzing trace with hash 181787761, now seen corresponding path program 1 times [2025-03-17 08:28:22,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 08:28:22,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970183951] [2025-03-17 08:28:22,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 08:28:22,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 08:28:22,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-17 08:28:23,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 08:28:23,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 08:28:23,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 08:28:23,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 08:28:23,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 08:28:23,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970183951] [2025-03-17 08:28:23,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970183951] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 08:28:23,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 08:28:23,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 08:28:23,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009942391] [2025-03-17 08:28:23,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 08:28:23,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 08:28:23,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 08:28:23,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 08:28:23,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 08:28:23,225 INFO L87 Difference]: Start difference. First operand has 414 states, 303 states have (on average 1.3597359735973598) internal successors, (412), 318 states have internal predecessors, (412), 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 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2025-03-17 08:28:23,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 08:28:23,308 INFO L93 Difference]: Finished difference Result 824 states and 1166 transitions. [2025-03-17 08:28:23,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 08:28:23,311 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 39 [2025-03-17 08:28:23,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 08:28:23,322 INFO L225 Difference]: With dead ends: 824 [2025-03-17 08:28:23,323 INFO L226 Difference]: Without dead ends: 396 [2025-03-17 08:28:23,328 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 [2025-03-17 08:28:23,331 INFO L435 NwaCegarLoop]: 567 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 08:28:23,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 567 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 08:28:23,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2025-03-17 08:28:23,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2025-03-17 08:28:23,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 292 states have (on average 1.3253424657534247) internal successors, (387), 300 states have internal predecessors, (387), 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) [2025-03-17 08:28:23,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 543 transitions. [2025-03-17 08:28:23,407 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 543 transitions. Word has length 39 [2025-03-17 08:28:23,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 08:28:23,408 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 543 transitions. [2025-03-17 08:28:23,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2025-03-17 08:28:23,409 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 543 transitions. [2025-03-17 08:28:23,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-17 08:28:23,410 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 08:28:23,410 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 08:28:23,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 08:28:23,411 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 08:28:23,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 08:28:23,411 INFO L85 PathProgramCache]: Analyzing trace with hash 874889458, now seen corresponding path program 1 times [2025-03-17 08:28:23,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 08:28:23,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258863831] [2025-03-17 08:28:23,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 08:28:23,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 08:28:23,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-17 08:28:23,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 08:28:23,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 08:28:23,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 08:28:23,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 08:28:23,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 08:28:23,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258863831] [2025-03-17 08:28:23,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258863831] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 08:28:23,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 08:28:23,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 08:28:23,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299257081] [2025-03-17 08:28:23,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 08:28:23,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 08:28:23,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 08:28:23,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 08:28:23,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 08:28:23,740 INFO L87 Difference]: Start difference. First operand 396 states and 543 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (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) [2025-03-17 08:28:27,758 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 [] [2025-03-17 08:28:27,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 08:28:27,847 INFO L93 Difference]: Finished difference Result 1144 states and 1575 transitions. [2025-03-17 08:28:27,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 08:28:27,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (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 39 [2025-03-17 08:28:27,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 08:28:27,856 INFO L225 Difference]: With dead ends: 1144 [2025-03-17 08:28:27,857 INFO L226 Difference]: Without dead ends: 759 [2025-03-17 08:28:27,859 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 [2025-03-17 08:28:27,860 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 500 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2025-03-17 08:28:27,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 1065 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2025-03-17 08:28:27,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2025-03-17 08:28:27,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 756. [2025-03-17 08:28:27,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 561 states have (on average 1.3279857397504455) internal successors, (745), 576 states have internal predecessors, (745), 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) [2025-03-17 08:28:27,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1041 transitions. [2025-03-17 08:28:27,905 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1041 transitions. Word has length 39 [2025-03-17 08:28:27,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 08:28:27,906 INFO L471 AbstractCegarLoop]: Abstraction has 756 states and 1041 transitions. [2025-03-17 08:28:27,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (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) [2025-03-17 08:28:27,906 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1041 transitions. [2025-03-17 08:28:27,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-17 08:28:27,909 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 08:28:27,910 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-17 08:28:27,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 08:28:27,911 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 08:28:27,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 08:28:27,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1857119783, now seen corresponding path program 1 times [2025-03-17 08:28:27,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 08:28:27,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846549369] [2025-03-17 08:28:27,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 08:28:27,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 08:28:27,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-17 08:28:28,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-17 08:28:28,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 08:28:28,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 08:28:28,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 08:28:28,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 08:28:28,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846549369] [2025-03-17 08:28:28,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846549369] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 08:28:28,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 08:28:28,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 08:28:28,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499626053] [2025-03-17 08:28:28,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 08:28:28,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 08:28:28,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 08:28:28,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 08:28:28,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 08:28:28,122 INFO L87 Difference]: Start difference. First operand 756 states and 1041 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (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) [2025-03-17 08:28:28,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 08:28:28,213 INFO L93 Difference]: Finished difference Result 1487 states and 2048 transitions. [2025-03-17 08:28:28,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 08:28:28,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (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 45 [2025-03-17 08:28:28,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 08:28:28,223 INFO L225 Difference]: With dead ends: 1487 [2025-03-17 08:28:28,223 INFO L226 Difference]: Without dead ends: 1481 [2025-03-17 08:28:28,225 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 [2025-03-17 08:28:28,226 INFO L435 NwaCegarLoop]: 549 mSDtfsCounter, 517 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 08:28:28,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 1062 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 08:28:28,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2025-03-17 08:28:28,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1481. [2025-03-17 08:28:28,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1102 states have (on average 1.3266787658802177) internal successors, (1462), 1131 states have internal predecessors, (1462), 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) [2025-03-17 08:28:28,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2038 transitions. [2025-03-17 08:28:28,312 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 2038 transitions. Word has length 45 [2025-03-17 08:28:28,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 08:28:28,313 INFO L471 AbstractCegarLoop]: Abstraction has 1481 states and 2038 transitions. [2025-03-17 08:28:28,313 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), 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) [2025-03-17 08:28:28,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 2038 transitions. [2025-03-17 08:28:28,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-03-17 08:28:28,321 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 08:28:28,321 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 08:28:28,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 08:28:28,321 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 08:28:28,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 08:28:28,322 INFO L85 PathProgramCache]: Analyzing trace with hash 736315740, now seen corresponding path program 1 times [2025-03-17 08:28:28,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 08:28:28,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566985645] [2025-03-17 08:28:28,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 08:28:28,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 08:28:28,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-17 08:28:28,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-17 08:28:28,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 08:28:28,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 08:28:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-17 08:28:28,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 08:28:28,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566985645] [2025-03-17 08:28:28,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566985645] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 08:28:28,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 08:28:28,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 08:28:28,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812972109] [2025-03-17 08:28:28,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 08:28:28,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 08:28:28,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 08:28:28,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 08:28:28,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 08:28:28,561 INFO L87 Difference]: Start difference. First operand 1481 states and 2038 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (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) [2025-03-17 08:28:28,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 08:28:28,740 INFO L93 Difference]: Finished difference Result 4226 states and 5802 transitions. [2025-03-17 08:28:28,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 08:28:28,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (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 103 [2025-03-17 08:28:28,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 08:28:28,758 INFO L225 Difference]: With dead ends: 4226 [2025-03-17 08:28:28,758 INFO L226 Difference]: Without dead ends: 2756 [2025-03-17 08:28:28,765 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 [2025-03-17 08:28:28,766 INFO L435 NwaCegarLoop]: 549 mSDtfsCounter, 458 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 08:28:28,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 1066 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 08:28:28,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2025-03-17 08:28:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2751. [2025-03-17 08:28:28,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2751 states, 2040 states have (on average 1.3245098039215686) internal successors, (2702), 2097 states have internal predecessors, (2702), 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) [2025-03-17 08:28:28,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 3770 transitions. [2025-03-17 08:28:28,909 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 3770 transitions. Word has length 103 [2025-03-17 08:28:28,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 08:28:28,911 INFO L471 AbstractCegarLoop]: Abstraction has 2751 states and 3770 transitions. [2025-03-17 08:28:28,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (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) [2025-03-17 08:28:28,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 3770 transitions. [2025-03-17 08:28:28,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-17 08:28:28,920 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 08:28:28,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 08:28:28,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 08:28:28,921 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 08:28:28,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 08:28:28,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1774652631, now seen corresponding path program 1 times [2025-03-17 08:28:28,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 08:28:28,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685209846] [2025-03-17 08:28:28,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 08:28:28,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 08:28:29,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-17 08:28:29,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-17 08:28:29,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 08:28:29,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 08:28:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2025-03-17 08:28:29,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 08:28:29,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685209846] [2025-03-17 08:28:29,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685209846] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 08:28:29,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 08:28:29,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 08:28:29,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164771225] [2025-03-17 08:28:29,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 08:28:29,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 08:28:29,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 08:28:29,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 08:28:29,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 08:28:29,320 INFO L87 Difference]: Start difference. First operand 2751 states and 3770 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2025-03-17 08:28:33,329 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 [] [2025-03-17 08:28:33,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 08:28:33,451 INFO L93 Difference]: Finished difference Result 5498 states and 7538 transitions. [2025-03-17 08:28:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 08:28:33,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 141 [2025-03-17 08:28:33,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 08:28:33,469 INFO L225 Difference]: With dead ends: 5498 [2025-03-17 08:28:33,469 INFO L226 Difference]: Without dead ends: 2762 [2025-03-17 08:28:33,479 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 [2025-03-17 08:28:33,480 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 6 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2025-03-17 08:28:33,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1613 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2025-03-17 08:28:33,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2025-03-17 08:28:33,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 2754. [2025-03-17 08:28:33,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2754 states, 2043 states have (on average 1.3230543318649046) internal successors, (2703), 2100 states have internal predecessors, (2703), 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) [2025-03-17 08:28:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 3771 transitions. [2025-03-17 08:28:33,592 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 3771 transitions. Word has length 141 [2025-03-17 08:28:33,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 08:28:33,593 INFO L471 AbstractCegarLoop]: Abstraction has 2754 states and 3771 transitions. [2025-03-17 08:28:33,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2025-03-17 08:28:33,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 3771 transitions. [2025-03-17 08:28:33,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-17 08:28:33,600 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 08:28:33,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 08:28:33,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 08:28:33,600 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 08:28:33,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 08:28:33,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1039797326, now seen corresponding path program 1 times [2025-03-17 08:28:33,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 08:28:33,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638817509] [2025-03-17 08:28:33,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 08:28:33,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 08:28:33,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-17 08:28:33,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-17 08:28:33,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 08:28:33,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 08:28:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2025-03-17 08:28:34,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 08:28:34,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638817509] [2025-03-17 08:28:34,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638817509] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 08:28:34,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 08:28:34,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 08:28:34,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823073241] [2025-03-17 08:28:34,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 08:28:34,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 08:28:34,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 08:28:34,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 08:28:34,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 08:28:34,207 INFO L87 Difference]: Start difference. First operand 2754 states and 3771 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 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) [2025-03-17 08:28:34,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 08:28:34,325 INFO L93 Difference]: Finished difference Result 5507 states and 7592 transitions. [2025-03-17 08:28:34,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 08:28:34,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 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 142 [2025-03-17 08:28:34,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 08:28:34,346 INFO L225 Difference]: With dead ends: 5507 [2025-03-17 08:28:34,346 INFO L226 Difference]: Without dead ends: 2770 [2025-03-17 08:28:34,358 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 [2025-03-17 08:28:34,358 INFO L435 NwaCegarLoop]: 539 mSDtfsCounter, 0 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 08:28:34,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2148 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 08:28:34,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2025-03-17 08:28:34,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 2758. [2025-03-17 08:28:34,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2758 states, 2045 states have (on average 1.3227383863080684) internal successors, (2705), 2104 states have internal predecessors, (2705), 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) [2025-03-17 08:28:34,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 3789 transitions. [2025-03-17 08:28:34,484 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 3789 transitions. Word has length 142 [2025-03-17 08:28:34,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 08:28:34,484 INFO L471 AbstractCegarLoop]: Abstraction has 2758 states and 3789 transitions. [2025-03-17 08:28:34,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 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) [2025-03-17 08:28:34,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 3789 transitions. [2025-03-17 08:28:34,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 08:28:34,492 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 08:28:34,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 08:28:34,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 08:28:34,493 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 08:28:34,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 08:28:34,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1068975099, now seen corresponding path program 1 times [2025-03-17 08:28:34,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 08:28:34,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465507542] [2025-03-17 08:28:34,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 08:28:34,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 08:28:34,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 08:28:34,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 08:28:34,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 08:28:34,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 08:28:35,106 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2025-03-17 08:28:35,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 08:28:35,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465507542] [2025-03-17 08:28:35,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465507542] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 08:28:35,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666813353] [2025-03-17 08:28:35,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 08:28:35,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 08:28:35,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 08:28:35,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 08:28:35,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 08:28:35,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 08:28:35,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 08:28:35,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 08:28:35,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 08:28:35,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 1311 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 08:28:35,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 08:28:35,977 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-03-17 08:28:35,977 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 08:28:35,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666813353] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 08:28:35,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 08:28:35,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 08:28:35,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557798200] [2025-03-17 08:28:35,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 08:28:35,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 08:28:35,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 08:28:35,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 08:28:35,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 08:28:35,980 INFO L87 Difference]: Start difference. First operand 2758 states and 3789 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2025-03-17 08:28:36,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 08:28:36,100 INFO L93 Difference]: Finished difference Result 5505 states and 7567 transitions. [2025-03-17 08:28:36,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 08:28:36,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 163 [2025-03-17 08:28:36,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 08:28:36,120 INFO L225 Difference]: With dead ends: 5505 [2025-03-17 08:28:36,121 INFO L226 Difference]: Without dead ends: 2759 [2025-03-17 08:28:36,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 08:28:36,133 INFO L435 NwaCegarLoop]: 538 mSDtfsCounter, 0 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 08:28:36,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1609 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 08:28:36,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2759 states. [2025-03-17 08:28:36,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2759 to 2759. [2025-03-17 08:28:36,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2759 states, 2046 states have (on average 1.3225806451612903) internal successors, (2706), 2105 states have internal predecessors, (2706), 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) [2025-03-17 08:28:36,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 3790 transitions. [2025-03-17 08:28:36,262 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 3790 transitions. Word has length 163 [2025-03-17 08:28:36,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 08:28:36,262 INFO L471 AbstractCegarLoop]: Abstraction has 2759 states and 3790 transitions. [2025-03-17 08:28:36,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2025-03-17 08:28:36,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 3790 transitions. [2025-03-17 08:28:36,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-03-17 08:28:36,268 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 08:28:36,268 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] [2025-03-17 08:28:36,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 08:28:36,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 08:28:36,469 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 08:28:36,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 08:28:36,469 INFO L85 PathProgramCache]: Analyzing trace with hash -18390367, now seen corresponding path program 1 times [2025-03-17 08:28:36,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 08:28:36,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405117160] [2025-03-17 08:28:36,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 08:28:36,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 08:28:36,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-17 08:28:36,645 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-17 08:28:36,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 08:28:36,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 08:28:37,103 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2025-03-17 08:28:37,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 08:28:37,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405117160] [2025-03-17 08:28:37,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405117160] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 08:28:37,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571177968] [2025-03-17 08:28:37,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 08:28:37,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 08:28:37,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 08:28:37,110 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 08:28:37,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 08:28:37,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-17 08:28:37,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-17 08:28:37,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 08:28:37,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 08:28:37,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 08:28:37,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 08:28:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 41 proven. 3 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-03-17 08:28:37,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 08:28:38,168 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2025-03-17 08:28:38,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571177968] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 08:28:38,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 08:28:38,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 12 [2025-03-17 08:28:38,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425548892] [2025-03-17 08:28:38,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 08:28:38,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 08:28:38,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 08:28:38,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 08:28:38,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-03-17 08:28:38,169 INFO L87 Difference]: Start difference. First operand 2759 states and 3790 transitions. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2025-03-17 08:28:38,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 08:28:38,524 INFO L93 Difference]: Finished difference Result 5517 states and 7582 transitions. [2025-03-17 08:28:38,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 08:28:38,524 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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 165 [2025-03-17 08:28:38,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 08:28:38,541 INFO L225 Difference]: With dead ends: 5517 [2025-03-17 08:28:38,542 INFO L226 Difference]: Without dead ends: 2768 [2025-03-17 08:28:38,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2025-03-17 08:28:38,554 INFO L435 NwaCegarLoop]: 535 mSDtfsCounter, 13 mSDsluCounter, 4269 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4804 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 08:28:38,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4804 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 08:28:38,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2025-03-17 08:28:38,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2768. [2025-03-17 08:28:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2054 states have (on average 1.321811100292113) internal successors, (2715), 2113 states have internal predecessors, (2715), 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) [2025-03-17 08:28:38,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 3799 transitions. [2025-03-17 08:28:38,679 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 3799 transitions. Word has length 165 [2025-03-17 08:28:38,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 08:28:38,679 INFO L471 AbstractCegarLoop]: Abstraction has 2768 states and 3799 transitions. [2025-03-17 08:28:38,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2025-03-17 08:28:38,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 3799 transitions. [2025-03-17 08:28:38,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-03-17 08:28:38,687 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 08:28:38,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 08:28:38,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 08:28:38,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-17 08:28:38,892 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 08:28:38,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 08:28:38,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1873761125, now seen corresponding path program 2 times [2025-03-17 08:28:38,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 08:28:38,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275332083] [2025-03-17 08:28:38,893 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 08:28:38,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 08:28:38,970 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 169 statements into 2 equivalence classes. [2025-03-17 08:28:39,131 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 169 of 169 statements. [2025-03-17 08:28:39,132 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 08:28:39,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 08:28:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2025-03-17 08:28:39,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 08:28:39,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275332083] [2025-03-17 08:28:39,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275332083] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 08:28:39,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674092299] [2025-03-17 08:28:39,557 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 08:28:39,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 08:28:39,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 08:28:39,559 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 08:28:39,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 08:28:39,967 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 169 statements into 2 equivalence classes.