./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /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 --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /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 -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 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 11:22:07,805 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 11:22:07,889 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-20 11:22:07,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 11:22:07,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 11:22:07,942 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 11:22:07,943 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 11:22:07,944 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 11:22:07,944 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 11:22:07,959 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 11:22:07,959 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 11:22:07,960 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 11:22:07,961 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 11:22:07,961 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 11:22:07,964 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 11:22:07,964 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 11:22:07,964 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 11:22:07,965 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 11:22:07,965 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 11:22:07,965 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 11:22:07,966 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 11:22:07,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 11:22:07,970 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 11:22:07,970 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 11:22:07,971 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 11:22:07,971 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 11:22:07,971 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 11:22:07,971 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 11:22:07,972 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 11:22:07,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 11:22:07,972 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 11:22:07,972 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 11:22:07,972 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 11:22:07,973 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 11:22:07,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 11:22:07,973 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 11:22:07,975 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 11:22:07,975 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 11:22:07,975 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 11:22:07,975 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8946ad2f029076f7c4f90de60a8c48e069f80fec06a0c6d7a5dc3a1fc4182879 [2024-11-20 11:22:08,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 11:22:08,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 11:22:08,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 11:22:08,241 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 11:22:08,241 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 11:22:08,243 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /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 [2024-11-20 11:22:09,770 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 11:22:10,209 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 11:22:10,210 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 [2024-11-20 11:22:10,243 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2060f6ad/f31ce67dc877427c9f43c015f44a90a2/FLAG5bae16581 [2024-11-20 11:22:10,260 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2060f6ad/f31ce67dc877427c9f43c015f44a90a2 [2024-11-20 11:22:10,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 11:22:10,263 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 11:22:10,264 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 11:22:10,264 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 11:22:10,269 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 11:22:10,270 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:22:10" (1/1) ... [2024-11-20 11:22:10,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e7dfe9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:22:10, skipping insertion in model container [2024-11-20 11:22:10,271 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:22:10" (1/1) ... [2024-11-20 11:22:10,354 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 11:22:11,334 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] [2024-11-20 11:22:11,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 11:22:11,407 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 11:22:11,572 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [3095-3096] [2024-11-20 11:22:11,600 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/scatterlist.h"), "i" (63), "i" (12UL)); [3374-3375] [2024-11-20 11:22:11,604 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/scatterlist.h"), "i" (65), "i" (12UL)); [3382-3383] [2024-11-20 11:22:11,605 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/scatterlist.h"), "i" (66), "i" (12UL)); [3390-3391] [2024-11-20 11:22:11,653 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/ldvuser/andrianov/commit-tester-work/task-014--linux-stable--dir/work/current--X--drivers/block/virtio_blk.ko--X--defaultlinux-stable-39a1d13-1--X--101_1a--X--cpachecker/linux-stable-39a1d13-1/csd_deg_dscv/11/dscv_tempdir/dscv/ri/101_1a/drivers/block/virtio_blk.c"), "i" (123), "i" (12UL)); [3605-3606] [2024-11-20 11:22:11,663 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/ldvuser/andrianov/commit-tester-work/task-014--linux-stable--dir/work/current--X--drivers/block/virtio_blk.ko--X--defaultlinux-stable-39a1d13-1--X--101_1a--X--cpachecker/linux-stable-39a1d13-1/csd_deg_dscv/11/dscv_tempdir/dscv/ri/101_1a/drivers/block/virtio_blk.c"), "i" (177), "i" (12UL)); [3680-3681] [2024-11-20 11:22:11,729 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/ldvuser/andrianov/commit-tester-work/task-014--linux-stable--dir/work/current--X--drivers/block/virtio_blk.ko--X--defaultlinux-stable-39a1d13-1--X--101_1a--X--cpachecker/linux-stable-39a1d13-1/csd_deg_dscv/11/dscv_tempdir/dscv/ri/101_1a/drivers/block/virtio_blk.c"), "i" (467), "i" (12UL)); [4002-4003] [2024-11-20 11:22:11,747 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] [2024-11-20 11:22:11,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 11:22:11,805 INFO L204 MainTranslator]: Completed translation [2024-11-20 11:22:11,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:22:11 WrapperNode [2024-11-20 11:22:11,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 11:22:11,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 11:22:11,808 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 11:22:11,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 11:22:11,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:22:11" (1/1) ... [2024-11-20 11:22:11,867 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:22:11" (1/1) ... [2024-11-20 11:22:11,943 INFO L138 Inliner]: procedures = 143, calls = 525, calls flagged for inlining = 83, calls inlined = 83, statements flattened = 1748 [2024-11-20 11:22:11,944 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 11:22:11,944 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 11:22:11,944 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 11:22:11,945 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 11:22:11,959 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:22:11" (1/1) ... [2024-11-20 11:22:11,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:22:11" (1/1) ... [2024-11-20 11:22:11,980 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:22:11" (1/1) ... [2024-11-20 11:22:12,232 INFO L175 MemorySlicer]: Split 263 memory accesses to 10 slices as follows [2, 1, 4, 25, 8, 8, 1, 1, 192, 21]. 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, 2, 3, 0, 0, 1, 0, 63, 21]. [2024-11-20 11:22:12,236 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:22:11" (1/1) ... [2024-11-20 11:22:12,236 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:22:11" (1/1) ... [2024-11-20 11:22:12,295 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:22:11" (1/1) ... [2024-11-20 11:22:12,303 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:22:11" (1/1) ... [2024-11-20 11:22:12,311 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:22:11" (1/1) ... [2024-11-20 11:22:12,321 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:22:11" (1/1) ... [2024-11-20 11:22:12,335 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 11:22:12,336 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 11:22:12,336 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 11:22:12,337 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 11:22:12,337 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:22:11" (1/1) ... [2024-11-20 11:22:12,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 11:22:12,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 11:22:12,371 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) [2024-11-20 11:22:12,374 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 [2024-11-20 11:22:12,415 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2024-11-20 11:22:12,415 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segment_size [2024-11-20 11:22:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-20 11:22:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-20 11:22:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-20 11:22:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-20 11:22:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-20 11:22:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-20 11:22:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-20 11:22:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-20 11:22:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-20 11:22:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-11-20 11:22:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2024-11-20 11:22:12,417 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2024-11-20 11:22:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-20 11:22:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-20 11:22:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-20 11:22:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-20 11:22:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-20 11:22:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-20 11:22:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-20 11:22:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-20 11:22:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-20 11:22:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-11-20 11:22:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-20 11:22:12,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-20 11:22:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 11:22:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 11:22:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 11:22:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 11:22:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-20 11:22:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-20 11:22:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-20 11:22:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-20 11:22:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-20 11:22:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-20 11:22:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-20 11:22:12,420 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-20 11:22:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure req_get_ioprio [2024-11-20 11:22:12,420 INFO L138 BoogieDeclarations]: Found implementation of procedure req_get_ioprio [2024-11-20 11:22:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2024-11-20 11:22:12,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2024-11-20 11:22:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-20 11:22:12,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-20 11:22:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free [2024-11-20 11:22:12,420 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_free [2024-11-20 11:22:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_buf [2024-11-20 11:22:12,420 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_buf [2024-11-20 11:22:12,421 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-20 11:22:12,421 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-20 11:22:12,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 11:22:12,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 11:22:12,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 11:22:12,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 11:22:12,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-20 11:22:12,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-20 11:22:12,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-20 11:22:12,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-20 11:22:12,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-20 11:22:12,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-20 11:22:12,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-20 11:22:12,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-20 11:22:12,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-20 11:22:12,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-20 11:22:12,422 INFO L130 BoogieDeclarations]: Found specification of procedure index_to_minor [2024-11-20 11:22:12,422 INFO L138 BoogieDeclarations]: Found implementation of procedure index_to_minor [2024-11-20 11:22:12,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-20 11:22:12,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-20 11:22:12,423 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-20 11:22:12,423 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-20 11:22:12,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 11:22:12,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-20 11:22:12,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-20 11:22:12,423 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2024-11-20 11:22:12,423 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2024-11-20 11:22:12,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 11:22:12,423 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2024-11-20 11:22:12,423 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2024-11-20 11:22:12,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 11:22:12,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 11:22:12,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 11:22:12,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-20 11:22:12,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-20 11:22:12,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-20 11:22:12,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-20 11:22:12,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-20 11:22:12,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-20 11:22:12,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-20 11:22:12,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-20 11:22:12,424 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-20 11:22:12,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-20 11:22:12,424 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2024-11-20 11:22:12,424 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2024-11-20 11:22:12,424 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_destroy [2024-11-20 11:22:12,425 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_destroy [2024-11-20 11:22:12,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 11:22:12,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 11:22:12,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-20 11:22:12,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-20 11:22:12,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-20 11:22:12,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-20 11:22:12,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-20 11:22:12,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-20 11:22:12,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-20 11:22:12,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-20 11:22:12,428 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2024-11-20 11:22:12,429 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2024-11-20 11:22:12,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2024-11-20 11:22:12,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2024-11-20 11:22:12,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 11:22:12,429 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2024-11-20 11:22:12,429 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2024-11-20 11:22:12,430 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_ordered [2024-11-20 11:22:12,430 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_ordered [2024-11-20 11:22:12,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 11:22:12,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 11:22:12,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 11:22:12,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 11:22:12,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-20 11:22:12,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-20 11:22:12,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-20 11:22:12,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-20 11:22:12,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-20 11:22:12,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-20 11:22:12,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 11:22:12,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 11:22:12,432 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2024-11-20 11:22:12,432 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2024-11-20 11:22:12,820 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 11:22:12,824 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 11:22:12,902 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-20 11:22:18,429 INFO L? ?]: Removed 979 outVars from TransFormulas that were not future-live. [2024-11-20 11:22:18,429 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 11:22:18,459 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 11:22:18,460 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-20 11:22:18,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:22:18 BoogieIcfgContainer [2024-11-20 11:22:18,462 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 11:22:18,465 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 11:22:18,466 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 11:22:18,469 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 11:22:18,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:22:10" (1/3) ... [2024-11-20 11:22:18,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f1fa77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:22:18, skipping insertion in model container [2024-11-20 11:22:18,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:22:11" (2/3) ... [2024-11-20 11:22:18,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f1fa77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:22:18, skipping insertion in model container [2024-11-20 11:22:18,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:22:18" (3/3) ... [2024-11-20 11:22:18,474 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2024-11-20 11:22:18,491 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 11:22:18,491 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 11:22:18,570 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 11:22:18,580 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;@247d932d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 11:22:18,580 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-20 11:22:18,587 INFO L276 IsEmpty]: Start isEmpty. Operand has 468 states, 357 states have (on average 1.3053221288515406) internal successors, (466), 372 states have internal predecessors, (466), 84 states have call successors, (84), 26 states have call predecessors, (84), 25 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-20 11:22:18,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-20 11:22:18,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 11:22:18,602 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 11:22:18,603 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 11:22:18,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 11:22:18,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1910474653, now seen corresponding path program 1 times [2024-11-20 11:22:18,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 11:22:18,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858689105] [2024-11-20 11:22:18,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 11:22:18,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 11:22:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:19,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 11:22:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:19,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 11:22:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:19,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-20 11:22:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:19,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 11:22:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:19,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-20 11:22:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 11:22:19,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 11:22:19,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858689105] [2024-11-20 11:22:19,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858689105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 11:22:19,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 11:22:19,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 11:22:19,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813011058] [2024-11-20 11:22:19,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 11:22:19,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 11:22:19,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 11:22:19,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 11:22:19,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 11:22:19,398 INFO L87 Difference]: Start difference. First operand has 468 states, 357 states have (on average 1.3053221288515406) internal successors, (466), 372 states have internal predecessors, (466), 84 states have call successors, (84), 26 states have call predecessors, (84), 25 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 11:22:23,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 11:22:27,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 11:22:28,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 11:22:28,971 INFO L93 Difference]: Finished difference Result 1030 states and 1437 transitions. [2024-11-20 11:22:28,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 11:22:28,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2024-11-20 11:22:28,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 11:22:28,991 INFO L225 Difference]: With dead ends: 1030 [2024-11-20 11:22:28,991 INFO L226 Difference]: Without dead ends: 547 [2024-11-20 11:22:29,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-20 11:22:29,006 INFO L432 NwaCegarLoop]: 344 mSDtfsCounter, 628 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 357 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2024-11-20 11:22:29,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 819 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 638 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2024-11-20 11:22:29,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2024-11-20 11:22:29,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 450. [2024-11-20 11:22:29,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 346 states have (on average 1.2745664739884393) internal successors, (441), 354 states have internal predecessors, (441), 79 states have call successors, (79), 25 states have call predecessors, (79), 24 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-20 11:22:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 597 transitions. [2024-11-20 11:22:29,114 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 597 transitions. Word has length 46 [2024-11-20 11:22:29,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 11:22:29,116 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 597 transitions. [2024-11-20 11:22:29,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 11:22:29,116 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 597 transitions. [2024-11-20 11:22:29,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-20 11:22:29,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 11:22:29,119 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 11:22:29,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 11:22:29,120 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 11:22:29,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 11:22:29,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1066469151, now seen corresponding path program 1 times [2024-11-20 11:22:29,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 11:22:29,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311889875] [2024-11-20 11:22:29,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 11:22:29,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 11:22:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:29,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 11:22:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:29,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 11:22:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:29,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-20 11:22:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:29,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 11:22:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:29,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-20 11:22:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:29,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 11:22:29,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 11:22:29,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311889875] [2024-11-20 11:22:29,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311889875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 11:22:29,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 11:22:29,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 11:22:29,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858697470] [2024-11-20 11:22:29,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 11:22:29,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 11:22:29,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 11:22:29,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 11:22:29,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 11:22:29,512 INFO L87 Difference]: Start difference. First operand 450 states and 597 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-20 11:22:33,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 11:22:37,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 11:22:41,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 11:22:43,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 11:22:43,942 INFO L93 Difference]: Finished difference Result 1485 states and 2026 transitions. [2024-11-20 11:22:43,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 11:22:43,943 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2024-11-20 11:22:43,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 11:22:43,953 INFO L225 Difference]: With dead ends: 1485 [2024-11-20 11:22:43,953 INFO L226 Difference]: Without dead ends: 1049 [2024-11-20 11:22:43,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-20 11:22:43,956 INFO L432 NwaCegarLoop]: 327 mSDtfsCounter, 1639 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 806 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2024-11-20 11:22:43,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1708 Valid, 1046 Invalid, 1773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 964 Invalid, 3 Unknown, 0 Unchecked, 14.1s Time] [2024-11-20 11:22:43,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2024-11-20 11:22:44,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 856. [2024-11-20 11:22:44,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 661 states have (on average 1.2783661119515886) internal successors, (845), 676 states have internal predecessors, (845), 149 states have call successors, (149), 46 states have call predecessors, (149), 45 states have return successors, (147), 147 states have call predecessors, (147), 147 states have call successors, (147) [2024-11-20 11:22:44,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1141 transitions. [2024-11-20 11:22:44,053 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1141 transitions. Word has length 46 [2024-11-20 11:22:44,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 11:22:44,053 INFO L471 AbstractCegarLoop]: Abstraction has 856 states and 1141 transitions. [2024-11-20 11:22:44,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-20 11:22:44,054 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1141 transitions. [2024-11-20 11:22:44,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-20 11:22:44,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 11:22:44,058 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 11:22:44,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 11:22:44,058 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 11:22:44,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 11:22:44,059 INFO L85 PathProgramCache]: Analyzing trace with hash 334290039, now seen corresponding path program 1 times [2024-11-20 11:22:44,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 11:22:44,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769988882] [2024-11-20 11:22:44,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 11:22:44,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 11:22:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:44,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 11:22:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:44,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 11:22:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:44,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-20 11:22:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:44,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 11:22:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:44,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-20 11:22:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:44,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 11:22:44,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 11:22:44,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769988882] [2024-11-20 11:22:44,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769988882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 11:22:44,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 11:22:44,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 11:22:44,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148998305] [2024-11-20 11:22:44,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 11:22:44,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 11:22:44,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 11:22:44,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 11:22:44,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 11:22:44,343 INFO L87 Difference]: Start difference. First operand 856 states and 1141 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 11:22:48,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 11:22:52,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 11:22:54,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 11:22:54,819 INFO L93 Difference]: Finished difference Result 2058 states and 2835 transitions. [2024-11-20 11:22:54,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 11:22:54,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2024-11-20 11:22:54,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 11:22:54,840 INFO L225 Difference]: With dead ends: 2058 [2024-11-20 11:22:54,840 INFO L226 Difference]: Without dead ends: 2049 [2024-11-20 11:22:54,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-20 11:22:54,846 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 1471 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 613 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2024-11-20 11:22:54,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 1276 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 1105 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2024-11-20 11:22:54,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2024-11-20 11:22:54,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 1673. [2024-11-20 11:22:54,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1294 states have (on average 1.278207109737249) internal successors, (1654), 1323 states have internal predecessors, (1654), 289 states have call successors, (289), 90 states have call predecessors, (289), 89 states have return successors, (287), 287 states have call predecessors, (287), 287 states have call successors, (287) [2024-11-20 11:22:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2230 transitions. [2024-11-20 11:22:54,960 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2230 transitions. Word has length 49 [2024-11-20 11:22:54,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 11:22:54,962 INFO L471 AbstractCegarLoop]: Abstraction has 1673 states and 2230 transitions. [2024-11-20 11:22:54,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 11:22:54,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2230 transitions. [2024-11-20 11:22:54,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-20 11:22:54,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 11:22:54,971 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 11:22:54,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 11:22:54,972 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 11:22:54,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 11:22:54,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1595417057, now seen corresponding path program 1 times [2024-11-20 11:22:54,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 11:22:54,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090519942] [2024-11-20 11:22:54,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 11:22:54,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 11:22:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:55,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 11:22:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:55,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 11:22:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:55,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-20 11:22:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:55,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 11:22:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:55,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-20 11:22:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:55,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-20 11:22:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:55,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-20 11:22:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:55,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 11:22:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:55,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 11:22:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:55,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 11:22:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:55,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-20 11:22:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:55,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 11:22:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:22:55,411 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-20 11:22:55,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 11:22:55,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090519942] [2024-11-20 11:22:55,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090519942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 11:22:55,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 11:22:55,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 11:22:55,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312081805] [2024-11-20 11:22:55,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 11:22:55,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 11:22:55,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 11:22:55,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 11:22:55,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 11:22:55,413 INFO L87 Difference]: Start difference. First operand 1673 states and 2230 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-20 11:22:59,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 11:23:03,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 11:23:07,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 11:23:10,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 11:23:10,461 INFO L93 Difference]: Finished difference Result 6150 states and 8502 transitions. [2024-11-20 11:23:10,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 11:23:10,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2024-11-20 11:23:10,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 11:23:10,502 INFO L225 Difference]: With dead ends: 6150 [2024-11-20 11:23:10,502 INFO L226 Difference]: Without dead ends: 4491 [2024-11-20 11:23:10,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2024-11-20 11:23:10,512 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 2001 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 969 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2065 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 2164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 969 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2024-11-20 11:23:10,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2065 Valid, 1311 Invalid, 2164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [969 Valid, 1192 Invalid, 3 Unknown, 0 Unchecked, 14.5s Time] [2024-11-20 11:23:10,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4491 states. [2024-11-20 11:23:10,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4491 to 3103. [2024-11-20 11:23:10,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3103 states, 2392 states have (on average 1.2767558528428093) internal successors, (3054), 2449 states have internal predecessors, (3054), 535 states have call successors, (535), 176 states have call predecessors, (535), 175 states have return successors, (533), 533 states have call predecessors, (533), 533 states have call successors, (533) [2024-11-20 11:23:10,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3103 states to 3103 states and 4122 transitions. [2024-11-20 11:23:10,696 INFO L78 Accepts]: Start accepts. Automaton has 3103 states and 4122 transitions. Word has length 110 [2024-11-20 11:23:10,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 11:23:10,696 INFO L471 AbstractCegarLoop]: Abstraction has 3103 states and 4122 transitions. [2024-11-20 11:23:10,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-20 11:23:10,696 INFO L276 IsEmpty]: Start isEmpty. Operand 3103 states and 4122 transitions. [2024-11-20 11:23:10,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-20 11:23:10,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 11:23:10,707 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 11:23:10,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 11:23:10,707 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 11:23:10,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 11:23:10,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1669692005, now seen corresponding path program 1 times [2024-11-20 11:23:10,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 11:23:10,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306555492] [2024-11-20 11:23:10,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 11:23:10,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 11:23:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:11,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 11:23:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:11,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 11:23:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:11,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-20 11:23:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:11,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 11:23:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:11,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-20 11:23:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:11,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-20 11:23:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:11,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 11:23:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:11,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-20 11:23:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:11,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 11:23:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:11,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 11:23:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:11,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-20 11:23:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:11,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-20 11:23:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:11,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-20 11:23:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:11,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 11:23:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:11,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-11-20 11:23:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:11,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-20 11:23:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:11,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-11-20 11:23:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:11,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 11:23:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:11,297 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-20 11:23:11,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 11:23:11,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306555492] [2024-11-20 11:23:11,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306555492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 11:23:11,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 11:23:11,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 11:23:11,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481595724] [2024-11-20 11:23:11,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 11:23:11,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 11:23:11,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 11:23:11,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 11:23:11,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-20 11:23:11,302 INFO L87 Difference]: Start difference. First operand 3103 states and 4122 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-20 11:23:15,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 11:23:19,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 11:23:23,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 11:23:27,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 11:23:29,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 11:23:29,488 INFO L93 Difference]: Finished difference Result 7579 states and 10395 transitions. [2024-11-20 11:23:29,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 11:23:29,489 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 153 [2024-11-20 11:23:29,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 11:23:29,528 INFO L225 Difference]: With dead ends: 7579 [2024-11-20 11:23:29,528 INFO L226 Difference]: Without dead ends: 4494 [2024-11-20 11:23:29,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 11:23:29,546 INFO L432 NwaCegarLoop]: 329 mSDtfsCounter, 860 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 531 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2024-11-20 11:23:29,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1569 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 1424 Invalid, 4 Unknown, 0 Unchecked, 17.9s Time] [2024-11-20 11:23:29,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4494 states. [2024-11-20 11:23:29,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4494 to 3106. [2024-11-20 11:23:29,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3106 states, 2395 states have (on average 1.2755741127348643) internal successors, (3055), 2452 states have internal predecessors, (3055), 535 states have call successors, (535), 176 states have call predecessors, (535), 175 states have return successors, (533), 533 states have call predecessors, (533), 533 states have call successors, (533) [2024-11-20 11:23:29,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 4123 transitions. [2024-11-20 11:23:29,754 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 4123 transitions. Word has length 153 [2024-11-20 11:23:29,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 11:23:29,755 INFO L471 AbstractCegarLoop]: Abstraction has 3106 states and 4123 transitions. [2024-11-20 11:23:29,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-20 11:23:29,756 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 4123 transitions. [2024-11-20 11:23:29,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-20 11:23:29,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 11:23:29,762 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 11:23:29,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 11:23:29,763 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 11:23:29,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 11:23:29,763 INFO L85 PathProgramCache]: Analyzing trace with hash 319297636, now seen corresponding path program 1 times [2024-11-20 11:23:29,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 11:23:29,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938907805] [2024-11-20 11:23:29,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 11:23:29,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 11:23:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:30,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 11:23:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:30,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 11:23:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:30,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-20 11:23:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:30,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 11:23:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:30,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-20 11:23:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:30,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-20 11:23:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:30,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 11:23:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:30,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-20 11:23:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:30,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-20 11:23:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:30,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 11:23:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:30,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-20 11:23:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:30,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-20 11:23:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:30,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-20 11:23:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:30,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 11:23:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:30,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-11-20 11:23:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:30,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-20 11:23:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:30,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-11-20 11:23:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:30,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 11:23:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 11:23:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-20 11:23:30,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 11:23:30,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938907805] [2024-11-20 11:23:30,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938907805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 11:23:30,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 11:23:30,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-20 11:23:30,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788421162] [2024-11-20 11:23:30,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 11:23:30,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 11:23:30,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 11:23:30,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 11:23:30,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-20 11:23:30,590 INFO L87 Difference]: Start difference. First operand 3106 states and 4123 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-20 11:23:34,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 11:23:38,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []