./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC --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 34ead930b8137fdc7abb50622ed73bdb27f2c7ae71d0ef3b9d44cfc9bee95799 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:57:41,456 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:57:41,561 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 22:57:41,572 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:57:41,573 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:57:41,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:57:41,612 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:57:41,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:57:41,613 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:57:41,614 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:57:41,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:57:41,615 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:57:41,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:57:41,616 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:57:41,616 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:57:41,616 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:57:41,616 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:57:41,616 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:57:41,617 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:57:41,617 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:57:41,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:57:41,618 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:57:41,618 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:57:41,618 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:57:41,618 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:57:41,618 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:57:41,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:57:41,619 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:57:41,619 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:57:41,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:57:41,620 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:57:41,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:57:41,620 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:57:41,620 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:57:41,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:57:41,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:57:41,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:57:41,621 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:57:41,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:57:41,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:57:41,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:57:41,621 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:57:41,621 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:57:41,621 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:57:41,621 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:57:41,621 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC 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 -> 34ead930b8137fdc7abb50622ed73bdb27f2c7ae71d0ef3b9d44cfc9bee95799 [2024-11-23 22:57:42,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:57:42,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:57:42,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:57:42,044 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:57:42,044 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:57:42,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2024-11-23 22:57:45,564 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/data/b6d96d135/a49946588ed04da1b7e86e40fdf2c31a/FLAG9afd79b47 [2024-11-23 22:57:46,333 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:57:46,334 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2024-11-23 22:57:46,376 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/data/b6d96d135/a49946588ed04da1b7e86e40fdf2c31a/FLAG9afd79b47 [2024-11-23 22:57:46,394 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/data/b6d96d135/a49946588ed04da1b7e86e40fdf2c31a [2024-11-23 22:57:46,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:57:46,398 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:57:46,400 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:57:46,400 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:57:46,406 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:57:46,407 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:57:46" (1/1) ... [2024-11-23 22:57:46,408 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e0ff56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:46, skipping insertion in model container [2024-11-23 22:57:46,408 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:57:46" (1/1) ... [2024-11-23 22:57:46,496 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:57:47,753 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[145794,145807] [2024-11-23 22:57:47,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:57:47,902 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:57:48,262 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[145794,145807] [2024-11-23 22:57:48,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:57:48,340 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:57:48,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:48 WrapperNode [2024-11-23 22:57:48,342 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:57:48,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:57:48,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:57:48,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:57:48,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:48" (1/1) ... [2024-11-23 22:57:48,399 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:48" (1/1) ... [2024-11-23 22:57:48,533 INFO L138 Inliner]: procedures = 138, calls = 863, calls flagged for inlining = 61, calls inlined = 52, statements flattened = 1873 [2024-11-23 22:57:48,533 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:57:48,534 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:57:48,534 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:57:48,534 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:57:48,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:48" (1/1) ... [2024-11-23 22:57:48,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:48" (1/1) ... [2024-11-23 22:57:48,564 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:48" (1/1) ... [2024-11-23 22:57:48,774 INFO L175 MemorySlicer]: Split 383 memory accesses to 16 slices as follows [2, 23, 77, 1, 172, 29, 12, 6, 2, 12, 13, 3, 1, 5, 8, 17]. 45 percent of accesses are in the largest equivalence class. The 26 initializations are split as follows [2, 0, 0, 0, 4, 0, 0, 0, 0, 12, 0, 0, 0, 0, 8, 0]. The 231 writes are split as follows [0, 23, 77, 1, 60, 29, 12, 1, 2, 0, 12, 2, 1, 3, 0, 8]. [2024-11-23 22:57:48,774 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:48" (1/1) ... [2024-11-23 22:57:48,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:48" (1/1) ... [2024-11-23 22:57:48,876 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:48" (1/1) ... [2024-11-23 22:57:48,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:48" (1/1) ... [2024-11-23 22:57:48,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:48" (1/1) ... [2024-11-23 22:57:48,937 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:48" (1/1) ... [2024-11-23 22:57:48,952 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:48" (1/1) ... [2024-11-23 22:57:48,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:57:48,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:57:48,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:57:48,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:57:48,993 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:48" (1/1) ... [2024-11-23 22:57:49,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:57:49,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:57:49,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:57:49,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:57:49,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-23 22:57:49,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-23 22:57:49,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-23 22:57:49,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-23 22:57:49,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-23 22:57:49,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-23 22:57:49,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-23 22:57:49,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-23 22:57:49,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-23 22:57:49,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-11-23 22:57:49,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2024-11-23 22:57:49,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2024-11-23 22:57:49,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2024-11-23 22:57:49,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#13 [2024-11-23 22:57:49,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#14 [2024-11-23 22:57:49,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#15 [2024-11-23 22:57:49,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2024-11-23 22:57:49,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2024-11-23 22:57:49,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2024-11-23 22:57:49,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2024-11-23 22:57:49,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2024-11-23 22:57:49,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2024-11-23 22:57:49,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2024-11-23 22:57:49,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#7 [2024-11-23 22:57:49,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#8 [2024-11-23 22:57:49,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#9 [2024-11-23 22:57:49,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#10 [2024-11-23 22:57:49,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#11 [2024-11-23 22:57:49,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#12 [2024-11-23 22:57:49,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#13 [2024-11-23 22:57:49,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#14 [2024-11-23 22:57:49,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#15 [2024-11-23 22:57:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-23 22:57:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-23 22:57:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-23 22:57:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-23 22:57:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-23 22:57:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-23 22:57:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-23 22:57:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-23 22:57:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-23 22:57:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-11-23 22:57:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2024-11-23 22:57:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#11 [2024-11-23 22:57:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#12 [2024-11-23 22:57:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#13 [2024-11-23 22:57:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#14 [2024-11-23 22:57:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#15 [2024-11-23 22:57:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-23 22:57:49,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-23 22:57:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 22:57:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 22:57:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 22:57:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 22:57:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 22:57:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-23 22:57:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-23 22:57:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-23 22:57:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-23 22:57:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-23 22:57:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-23 22:57:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-23 22:57:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-23 22:57:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-23 22:57:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-23 22:57:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-23 22:57:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-23 22:57:49,084 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-23 22:57:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2024-11-23 22:57:49,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2024-11-23 22:57:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-23 22:57:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-23 22:57:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_dealloc_kioc [2024-11-23 22:57:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_dealloc_kioc [2024-11-23 22:57:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2024-11-23 22:57:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2024-11-23 22:57:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_attach_buf [2024-11-23 22:57:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_attach_buf [2024-11-23 22:57:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2024-11-23 22:57:49,086 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2024-11-23 22:57:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 22:57:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 22:57:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 22:57:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 22:57:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 22:57:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 22:57:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-23 22:57:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-23 22:57:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-23 22:57:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-23 22:57:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-23 22:57:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-23 22:57:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-23 22:57:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-23 22:57:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-23 22:57:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-23 22:57:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2024-11-23 22:57:49,087 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2024-11-23 22:57:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-23 22:57:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-23 22:57:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-23 22:57:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-23 22:57:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-23 22:57:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-23 22:57:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-23 22:57:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2024-11-23 22:57:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2024-11-23 22:57:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#5 [2024-11-23 22:57:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#6 [2024-11-23 22:57:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#7 [2024-11-23 22:57:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#8 [2024-11-23 22:57:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#9 [2024-11-23 22:57:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#10 [2024-11-23 22:57:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#11 [2024-11-23 22:57:49,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#12 [2024-11-23 22:57:49,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#13 [2024-11-23 22:57:49,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#14 [2024-11-23 22:57:49,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#15 [2024-11-23 22:57:49,090 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-23 22:57:49,090 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-23 22:57:49,090 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-23 22:57:49,091 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2024-11-23 22:57:49,091 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2024-11-23 22:57:49,091 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#5 [2024-11-23 22:57:49,091 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#6 [2024-11-23 22:57:49,091 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#7 [2024-11-23 22:57:49,091 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#8 [2024-11-23 22:57:49,091 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#9 [2024-11-23 22:57:49,091 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#10 [2024-11-23 22:57:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#11 [2024-11-23 22:57:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#12 [2024-11-23 22:57:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#13 [2024-11-23 22:57:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#14 [2024-11-23 22:57:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#15 [2024-11-23 22:57:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_ioctl [2024-11-23 22:57:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_ioctl [2024-11-23 22:57:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-23 22:57:49,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-23 22:57:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 22:57:49,093 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 22:57:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 22:57:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-23 22:57:49,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-23 22:57:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2024-11-23 22:57:49,094 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2024-11-23 22:57:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2024-11-23 22:57:49,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2024-11-23 22:57:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:57:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 22:57:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 22:57:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 22:57:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 22:57:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-23 22:57:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-23 22:57:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-23 22:57:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-23 22:57:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-23 22:57:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-23 22:57:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-23 22:57:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-23 22:57:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-23 22:57:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-23 22:57:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-23 22:57:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-23 22:57:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2024-11-23 22:57:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2024-11-23 22:57:49,096 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2024-11-23 22:57:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2024-11-23 22:57:49,096 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2024-11-23 22:57:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure up [2024-11-23 22:57:49,096 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2024-11-23 22:57:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 22:57:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 22:57:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-23 22:57:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-23 22:57:49,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-23 22:57:49,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-23 22:57:49,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-23 22:57:49,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-23 22:57:49,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-23 22:57:49,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-23 22:57:49,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-23 22:57:49,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-23 22:57:49,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-23 22:57:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-23 22:57:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-23 22:57:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2024-11-23 22:57:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2024-11-23 22:57:49,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2024-11-23 22:57:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-23 22:57:49,099 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-23 22:57:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 22:57:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-23 22:57:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-23 22:57:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-23 22:57:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-23 22:57:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-23 22:57:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-23 22:57:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-23 22:57:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-23 22:57:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-23 22:57:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-23 22:57:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-23 22:57:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-23 22:57:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-11-23 22:57:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-11-23 22:57:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-11-23 22:57:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2024-11-23 22:57:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-23 22:57:49,101 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-23 22:57:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2024-11-23 22:57:49,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2024-11-23 22:57:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:57:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 22:57:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 22:57:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 22:57:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 22:57:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 22:57:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 22:57:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 22:57:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 22:57:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-23 22:57:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-23 22:57:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-23 22:57:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-23 22:57:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-23 22:57:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-23 22:57:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-23 22:57:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2024-11-23 22:57:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2024-11-23 22:57:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2024-11-23 22:57:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2024-11-23 22:57:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2024-11-23 22:57:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2024-11-23 22:57:49,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2024-11-23 22:57:49,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#7 [2024-11-23 22:57:49,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#8 [2024-11-23 22:57:49,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#9 [2024-11-23 22:57:49,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#10 [2024-11-23 22:57:49,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#11 [2024-11-23 22:57:49,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#12 [2024-11-23 22:57:49,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#13 [2024-11-23 22:57:49,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#14 [2024-11-23 22:57:49,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#15 [2024-11-23 22:57:49,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:57:49,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:57:49,105 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2024-11-23 22:57:49,105 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2024-11-23 22:57:49,768 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:57:49,772 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:57:49,799 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-23 22:57:57,599 INFO L? ?]: Removed 666 outVars from TransFormulas that were not future-live. [2024-11-23 22:57:57,599 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:57:57,643 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:57:57,647 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 22:57:57,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:57:57 BoogieIcfgContainer [2024-11-23 22:57:57,648 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:57:57,652 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:57:57,652 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:57:57,659 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:57:57,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:57:46" (1/3) ... [2024-11-23 22:57:57,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf9f0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:57:57, skipping insertion in model container [2024-11-23 22:57:57,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:48" (2/3) ... [2024-11-23 22:57:57,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf9f0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:57:57, skipping insertion in model container [2024-11-23 22:57:57,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:57:57" (3/3) ... [2024-11-23 22:57:57,666 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2024-11-23 22:57:57,687 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:57:57,689 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i that has 42 procedures, 511 locations, 1 initial locations, 19 loop locations, and 1 error locations. [2024-11-23 22:57:57,806 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:57:57,826 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;@14a9a1bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:57:57,827 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 22:57:57,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 458 states, 354 states have (on average 1.4067796610169492) internal successors, (498), 362 states have internal predecessors, (498), 75 states have call successors, (75), 28 states have call predecessors, (75), 27 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-23 22:57:57,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-23 22:57:57,881 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:57:57,883 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:57:57,884 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:57:57,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:57:57,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1482573424, now seen corresponding path program 1 times [2024-11-23 22:57:57,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:57:57,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51658843] [2024-11-23 22:57:57,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:57:57,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:02,311 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-23 22:58:02,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:02,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51658843] [2024-11-23 22:58:02,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51658843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:02,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:02,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 22:58:02,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931762485] [2024-11-23 22:58:02,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:02,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 22:58:02,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:02,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 22:58:02,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:58:02,363 INFO L87 Difference]: Start difference. First operand has 458 states, 354 states have (on average 1.4067796610169492) internal successors, (498), 362 states have internal predecessors, (498), 75 states have call successors, (75), 28 states have call predecessors, (75), 27 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 22:58:02,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:02,498 INFO L93 Difference]: Finished difference Result 892 states and 1273 transitions. [2024-11-23 22:58:02,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 22:58:02,501 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 177 [2024-11-23 22:58:02,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:02,521 INFO L225 Difference]: With dead ends: 892 [2024-11-23 22:58:02,522 INFO L226 Difference]: Without dead ends: 440 [2024-11-23 22:58:02,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:58:02,536 INFO L435 NwaCegarLoop]: 635 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:02,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:58:02,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-11-23 22:58:02,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2024-11-23 22:58:02,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 342 states have (on average 1.3801169590643274) internal successors, (472), 345 states have internal predecessors, (472), 71 states have call successors, (71), 27 states have call predecessors, (71), 26 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-23 22:58:02,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 613 transitions. [2024-11-23 22:58:02,661 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 613 transitions. Word has length 177 [2024-11-23 22:58:02,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:02,663 INFO L471 AbstractCegarLoop]: Abstraction has 440 states and 613 transitions. [2024-11-23 22:58:02,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 22:58:02,664 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 613 transitions. [2024-11-23 22:58:02,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-23 22:58:02,672 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:02,672 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:02,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 22:58:02,673 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:02,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:02,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1937323512, now seen corresponding path program 1 times [2024-11-23 22:58:02,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:02,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86451698] [2024-11-23 22:58:02,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:02,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:05,864 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-23 22:58:05,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:05,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86451698] [2024-11-23 22:58:05,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86451698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:05,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:05,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:58:05,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933198951] [2024-11-23 22:58:05,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:05,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:58:05,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:05,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:58:05,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:58:05,874 INFO L87 Difference]: Start difference. First operand 440 states and 613 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 22:58:06,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:06,235 INFO L93 Difference]: Finished difference Result 891 states and 1244 transitions. [2024-11-23 22:58:06,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:58:06,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 177 [2024-11-23 22:58:06,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:06,249 INFO L225 Difference]: With dead ends: 891 [2024-11-23 22:58:06,249 INFO L226 Difference]: Without dead ends: 473 [2024-11-23 22:58:06,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:58:06,254 INFO L435 NwaCegarLoop]: 612 mSDtfsCounter, 64 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:06,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1180 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 22:58:06,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-11-23 22:58:06,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 470. [2024-11-23 22:58:06,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 367 states have (on average 1.3814713896457766) internal successors, (507), 371 states have internal predecessors, (507), 74 states have call successors, (74), 29 states have call predecessors, (74), 28 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-23 22:58:06,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 654 transitions. [2024-11-23 22:58:06,334 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 654 transitions. Word has length 177 [2024-11-23 22:58:06,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:06,335 INFO L471 AbstractCegarLoop]: Abstraction has 470 states and 654 transitions. [2024-11-23 22:58:06,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 22:58:06,335 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 654 transitions. [2024-11-23 22:58:06,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-23 22:58:06,348 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:06,350 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:06,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:58:06,351 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:06,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:06,352 INFO L85 PathProgramCache]: Analyzing trace with hash 830967722, now seen corresponding path program 1 times [2024-11-23 22:58:06,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:06,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375896762] [2024-11-23 22:58:06,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:06,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-23 22:58:10,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:10,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375896762] [2024-11-23 22:58:10,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375896762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:10,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:10,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:58:10,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64884781] [2024-11-23 22:58:10,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:10,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:58:10,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:10,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:58:10,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:58:10,221 INFO L87 Difference]: Start difference. First operand 470 states and 654 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 22:58:10,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:10,371 INFO L93 Difference]: Finished difference Result 918 states and 1283 transitions. [2024-11-23 22:58:10,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:58:10,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 227 [2024-11-23 22:58:10,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:10,380 INFO L225 Difference]: With dead ends: 918 [2024-11-23 22:58:10,380 INFO L226 Difference]: Without dead ends: 470 [2024-11-23 22:58:10,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:58:10,385 INFO L435 NwaCegarLoop]: 599 mSDtfsCounter, 586 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:10,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 599 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:58:10,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2024-11-23 22:58:10,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2024-11-23 22:58:10,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 367 states have (on average 1.3569482288828338) internal successors, (498), 371 states have internal predecessors, (498), 74 states have call successors, (74), 29 states have call predecessors, (74), 28 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-23 22:58:10,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 645 transitions. [2024-11-23 22:58:10,430 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 645 transitions. Word has length 227 [2024-11-23 22:58:10,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:10,432 INFO L471 AbstractCegarLoop]: Abstraction has 470 states and 645 transitions. [2024-11-23 22:58:10,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 22:58:10,432 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 645 transitions. [2024-11-23 22:58:10,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-23 22:58:10,445 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:10,446 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:10,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 22:58:10,447 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:10,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:10,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1615368166, now seen corresponding path program 1 times [2024-11-23 22:58:10,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:10,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169063163] [2024-11-23 22:58:10,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:10,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:13,686 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-23 22:58:13,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:13,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169063163] [2024-11-23 22:58:13,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169063163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:13,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:13,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:58:13,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900165990] [2024-11-23 22:58:13,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:13,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:58:13,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:13,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:58:13,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:58:13,693 INFO L87 Difference]: Start difference. First operand 470 states and 645 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-23 22:58:13,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:13,953 INFO L93 Difference]: Finished difference Result 921 states and 1267 transitions. [2024-11-23 22:58:13,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:58:13,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 245 [2024-11-23 22:58:13,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:13,960 INFO L225 Difference]: With dead ends: 921 [2024-11-23 22:58:13,961 INFO L226 Difference]: Without dead ends: 473 [2024-11-23 22:58:13,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:58:13,965 INFO L435 NwaCegarLoop]: 603 mSDtfsCounter, 603 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:13,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 1203 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:58:13,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-11-23 22:58:14,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 472. [2024-11-23 22:58:14,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 369 states have (on average 1.3550135501355014) internal successors, (500), 373 states have internal predecessors, (500), 74 states have call successors, (74), 29 states have call predecessors, (74), 28 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-23 22:58:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 647 transitions. [2024-11-23 22:58:14,015 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 647 transitions. Word has length 245 [2024-11-23 22:58:14,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:14,016 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 647 transitions. [2024-11-23 22:58:14,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-23 22:58:14,017 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 647 transitions. [2024-11-23 22:58:14,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-23 22:58:14,024 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:14,025 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:14,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 22:58:14,026 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:14,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:14,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1798569323, now seen corresponding path program 1 times [2024-11-23 22:58:14,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:14,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735704479] [2024-11-23 22:58:14,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:14,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-23 22:58:17,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:17,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735704479] [2024-11-23 22:58:17,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735704479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:17,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:17,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:58:17,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349827925] [2024-11-23 22:58:17,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:17,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:58:17,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:17,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:58:17,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:58:17,035 INFO L87 Difference]: Start difference. First operand 472 states and 647 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-23 22:58:21,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 22:58:21,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:21,426 INFO L93 Difference]: Finished difference Result 974 states and 1337 transitions. [2024-11-23 22:58:21,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:58:21,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 241 [2024-11-23 22:58:21,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:21,434 INFO L225 Difference]: With dead ends: 974 [2024-11-23 22:58:21,434 INFO L226 Difference]: Without dead ends: 524 [2024-11-23 22:58:21,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:58:21,438 INFO L435 NwaCegarLoop]: 641 mSDtfsCounter, 84 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:21,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1187 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-23 22:58:21,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-11-23 22:58:21,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 521. [2024-11-23 22:58:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 411 states have (on average 1.3503649635036497) internal successors, (555), 416 states have internal predecessors, (555), 77 states have call successors, (77), 33 states have call predecessors, (77), 32 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-23 22:58:21,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 708 transitions. [2024-11-23 22:58:21,493 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 708 transitions. Word has length 241 [2024-11-23 22:58:21,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:21,494 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 708 transitions. [2024-11-23 22:58:21,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-23 22:58:21,495 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 708 transitions. [2024-11-23 22:58:21,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-23 22:58:21,500 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:21,501 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:21,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 22:58:21,501 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:21,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:21,502 INFO L85 PathProgramCache]: Analyzing trace with hash -859796113, now seen corresponding path program 1 times [2024-11-23 22:58:21,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:21,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989687396] [2024-11-23 22:58:21,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:21,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-11-23 22:58:23,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:23,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989687396] [2024-11-23 22:58:23,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989687396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:23,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:23,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:58:23,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236991445] [2024-11-23 22:58:23,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:23,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:58:23,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:23,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:58:23,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:58:23,567 INFO L87 Difference]: Start difference. First operand 521 states and 708 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-23 22:58:23,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:23,660 INFO L93 Difference]: Finished difference Result 1021 states and 1391 transitions. [2024-11-23 22:58:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:58:23,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 255 [2024-11-23 22:58:23,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:23,666 INFO L225 Difference]: With dead ends: 1021 [2024-11-23 22:58:23,666 INFO L226 Difference]: Without dead ends: 522 [2024-11-23 22:58:23,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:58:23,669 INFO L435 NwaCegarLoop]: 605 mSDtfsCounter, 0 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:23,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1205 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:58:23,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-23 22:58:23,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2024-11-23 22:58:23,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 412 states have (on average 1.3495145631067962) internal successors, (556), 417 states have internal predecessors, (556), 77 states have call successors, (77), 33 states have call predecessors, (77), 32 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-23 22:58:23,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 709 transitions. [2024-11-23 22:58:23,713 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 709 transitions. Word has length 255 [2024-11-23 22:58:23,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:23,715 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 709 transitions. [2024-11-23 22:58:23,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-23 22:58:23,715 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 709 transitions. [2024-11-23 22:58:23,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-23 22:58:23,722 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:23,722 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:23,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 22:58:23,723 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:23,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:23,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1294301711, now seen corresponding path program 1 times [2024-11-23 22:58:23,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:23,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580002361] [2024-11-23 22:58:23,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:23,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:25,982 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2024-11-23 22:58:25,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:25,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580002361] [2024-11-23 22:58:25,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580002361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:25,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:25,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:58:25,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923530650] [2024-11-23 22:58:25,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:25,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:58:25,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:25,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:58:25,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:58:25,986 INFO L87 Difference]: Start difference. First operand 522 states and 709 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-23 22:58:26,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:26,102 INFO L93 Difference]: Finished difference Result 1023 states and 1395 transitions. [2024-11-23 22:58:26,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:58:26,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 255 [2024-11-23 22:58:26,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:26,112 INFO L225 Difference]: With dead ends: 1023 [2024-11-23 22:58:26,113 INFO L226 Difference]: Without dead ends: 523 [2024-11-23 22:58:26,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:58:26,117 INFO L435 NwaCegarLoop]: 605 mSDtfsCounter, 0 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:26,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1204 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:58:26,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2024-11-23 22:58:26,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2024-11-23 22:58:26,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 413 states have (on average 1.3486682808716708) internal successors, (557), 418 states have internal predecessors, (557), 77 states have call successors, (77), 33 states have call predecessors, (77), 32 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-23 22:58:26,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 710 transitions. [2024-11-23 22:58:26,160 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 710 transitions. Word has length 255 [2024-11-23 22:58:26,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:26,162 INFO L471 AbstractCegarLoop]: Abstraction has 523 states and 710 transitions. [2024-11-23 22:58:26,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-23 22:58:26,162 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 710 transitions. [2024-11-23 22:58:26,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-23 22:58:26,168 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:26,169 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:26,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 22:58:26,169 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:26,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:26,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1075446993, now seen corresponding path program 1 times [2024-11-23 22:58:26,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:26,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675259527] [2024-11-23 22:58:26,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:26,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2024-11-23 22:58:29,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:29,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675259527] [2024-11-23 22:58:29,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675259527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:29,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:29,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:58:29,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82815031] [2024-11-23 22:58:29,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:29,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:58:29,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:29,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:58:29,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:58:29,307 INFO L87 Difference]: Start difference. First operand 523 states and 710 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-23 22:58:29,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:29,516 INFO L93 Difference]: Finished difference Result 1026 states and 1398 transitions. [2024-11-23 22:58:29,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:58:29,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 255 [2024-11-23 22:58:29,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:29,523 INFO L225 Difference]: With dead ends: 1026 [2024-11-23 22:58:29,523 INFO L226 Difference]: Without dead ends: 525 [2024-11-23 22:58:29,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:58:29,528 INFO L435 NwaCegarLoop]: 604 mSDtfsCounter, 0 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:29,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1801 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:58:29,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-23 22:58:29,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2024-11-23 22:58:29,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 415 states have (on average 1.346987951807229) internal successors, (559), 420 states have internal predecessors, (559), 77 states have call successors, (77), 33 states have call predecessors, (77), 32 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-23 22:58:29,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 712 transitions. [2024-11-23 22:58:29,569 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 712 transitions. Word has length 255 [2024-11-23 22:58:29,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:29,570 INFO L471 AbstractCegarLoop]: Abstraction has 525 states and 712 transitions. [2024-11-23 22:58:29,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-23 22:58:29,571 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 712 transitions. [2024-11-23 22:58:29,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-23 22:58:29,578 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:29,578 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:29,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 22:58:29,579 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:29,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:29,580 INFO L85 PathProgramCache]: Analyzing trace with hash -418613510, now seen corresponding path program 1 times [2024-11-23 22:58:29,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:29,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117688798] [2024-11-23 22:58:29,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:29,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:32,028 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-11-23 22:58:32,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:32,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117688798] [2024-11-23 22:58:32,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117688798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:32,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:32,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:58:32,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627965354] [2024-11-23 22:58:32,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:32,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:58:32,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:32,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:58:32,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:58:32,032 INFO L87 Difference]: Start difference. First operand 525 states and 712 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 22:58:32,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:32,206 INFO L93 Difference]: Finished difference Result 1037 states and 1417 transitions. [2024-11-23 22:58:32,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:58:32,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 278 [2024-11-23 22:58:32,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:32,216 INFO L225 Difference]: With dead ends: 1037 [2024-11-23 22:58:32,217 INFO L226 Difference]: Without dead ends: 534 [2024-11-23 22:58:32,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:58:32,221 INFO L435 NwaCegarLoop]: 601 mSDtfsCounter, 8 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:32,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1200 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:58:32,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-23 22:58:32,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 526. [2024-11-23 22:58:32,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 416 states have (on average 1.3461538461538463) internal successors, (560), 421 states have internal predecessors, (560), 77 states have call successors, (77), 33 states have call predecessors, (77), 32 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-23 22:58:32,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 713 transitions. [2024-11-23 22:58:32,260 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 713 transitions. Word has length 278 [2024-11-23 22:58:32,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:32,261 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 713 transitions. [2024-11-23 22:58:32,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 22:58:32,263 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 713 transitions. [2024-11-23 22:58:32,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-23 22:58:32,269 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:32,269 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:32,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 22:58:32,270 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:32,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:32,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1180169520, now seen corresponding path program 1 times [2024-11-23 22:58:32,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:32,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82844981] [2024-11-23 22:58:32,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:32,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:34,999 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2024-11-23 22:58:34,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:34,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82844981] [2024-11-23 22:58:34,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82844981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:58:34,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277361082] [2024-11-23 22:58:35,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:35,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:58:35,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:58:35,004 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:58:35,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:58:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:38,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 3391 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 22:58:38,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:58:38,567 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-11-23 22:58:38,567 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:58:38,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277361082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:38,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:58:38,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-23 22:58:38,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159528354] [2024-11-23 22:58:38,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:38,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:58:38,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:38,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:58:38,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:58:38,571 INFO L87 Difference]: Start difference. First operand 526 states and 713 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 22:58:38,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:38,657 INFO L93 Difference]: Finished difference Result 530 states and 717 transitions. [2024-11-23 22:58:38,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:58:38,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 278 [2024-11-23 22:58:38,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:38,663 INFO L225 Difference]: With dead ends: 530 [2024-11-23 22:58:38,664 INFO L226 Difference]: Without dead ends: 527 [2024-11-23 22:58:38,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:58:38,665 INFO L435 NwaCegarLoop]: 605 mSDtfsCounter, 0 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:38,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1205 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:58:38,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-11-23 22:58:38,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2024-11-23 22:58:38,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 417 states have (on average 1.3453237410071943) internal successors, (561), 422 states have internal predecessors, (561), 77 states have call successors, (77), 33 states have call predecessors, (77), 32 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-23 22:58:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 714 transitions. [2024-11-23 22:58:38,699 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 714 transitions. Word has length 278 [2024-11-23 22:58:38,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:38,700 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 714 transitions. [2024-11-23 22:58:38,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 22:58:38,701 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 714 transitions. [2024-11-23 22:58:38,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-23 22:58:38,707 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:38,707 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:38,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 22:58:38,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 22:58:38,909 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:38,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:38,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1219685127, now seen corresponding path program 1 times [2024-11-23 22:58:38,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:38,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314445706] [2024-11-23 22:58:38,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:38,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:41,621 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2024-11-23 22:58:41,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:41,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314445706] [2024-11-23 22:58:41,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314445706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:58:41,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287120452] [2024-11-23 22:58:41,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:41,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:58:41,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:58:41,626 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:58:41,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 22:58:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:45,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 3415 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:58:45,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:58:45,251 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-23 22:58:45,251 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:58:45,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287120452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:45,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:58:45,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-23 22:58:45,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762818949] [2024-11-23 22:58:45,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:45,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:58:45,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:45,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:58:45,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:58:45,255 INFO L87 Difference]: Start difference. First operand 527 states and 714 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 22:58:45,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:45,363 INFO L93 Difference]: Finished difference Result 1038 states and 1416 transitions. [2024-11-23 22:58:45,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:58:45,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 280 [2024-11-23 22:58:45,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:45,371 INFO L225 Difference]: With dead ends: 1038 [2024-11-23 22:58:45,371 INFO L226 Difference]: Without dead ends: 533 [2024-11-23 22:58:45,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:58:45,375 INFO L435 NwaCegarLoop]: 604 mSDtfsCounter, 1 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:45,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1204 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:58:45,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-23 22:58:45,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2024-11-23 22:58:45,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 423 states have (on average 1.3451536643026005) internal successors, (569), 428 states have internal predecessors, (569), 77 states have call successors, (77), 33 states have call predecessors, (77), 32 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-23 22:58:45,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 722 transitions. [2024-11-23 22:58:45,413 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 722 transitions. Word has length 280 [2024-11-23 22:58:45,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:45,414 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 722 transitions. [2024-11-23 22:58:45,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 22:58:45,414 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 722 transitions. [2024-11-23 22:58:45,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-23 22:58:45,421 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:45,421 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:45,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 22:58:45,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-23 22:58:45,622 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:45,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:45,622 INFO L85 PathProgramCache]: Analyzing trace with hash -220299277, now seen corresponding path program 1 times [2024-11-23 22:58:45,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:45,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531698516] [2024-11-23 22:58:45,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:45,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2024-11-23 22:58:48,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:48,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531698516] [2024-11-23 22:58:48,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531698516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:48,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:48,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:58:48,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63955607] [2024-11-23 22:58:48,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:48,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:58:48,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:48,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:58:48,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:58:48,929 INFO L87 Difference]: Start difference. First operand 533 states and 722 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:58:49,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:49,106 INFO L93 Difference]: Finished difference Result 1046 states and 1422 transitions. [2024-11-23 22:58:49,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:58:49,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 298 [2024-11-23 22:58:49,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:49,112 INFO L225 Difference]: With dead ends: 1046 [2024-11-23 22:58:49,113 INFO L226 Difference]: Without dead ends: 535 [2024-11-23 22:58:49,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:58:49,116 INFO L435 NwaCegarLoop]: 604 mSDtfsCounter, 0 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:49,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1801 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:58:49,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-23 22:58:49,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 533. [2024-11-23 22:58:49,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 423 states have (on average 1.3451536643026005) internal successors, (569), 428 states have internal predecessors, (569), 77 states have call successors, (77), 33 states have call predecessors, (77), 32 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-23 22:58:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 722 transitions. [2024-11-23 22:58:49,152 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 722 transitions. Word has length 298 [2024-11-23 22:58:49,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:49,153 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 722 transitions. [2024-11-23 22:58:49,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:58:49,154 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 722 transitions. [2024-11-23 22:58:49,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-23 22:58:49,158 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:49,159 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:49,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 22:58:49,159 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:49,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:49,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2057994624, now seen corresponding path program 1 times [2024-11-23 22:58:49,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:49,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774226307] [2024-11-23 22:58:49,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:49,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-11-23 22:58:51,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:51,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774226307] [2024-11-23 22:58:51,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774226307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:58:51,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460546552] [2024-11-23 22:58:51,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:51,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:58:51,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:58:51,537 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:58:51,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 22:58:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:55,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 3493 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:58:55,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:58:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-11-23 22:58:55,491 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:58:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-11-23 22:58:57,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460546552] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:58:57,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:58:57,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-23 22:58:57,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404180021] [2024-11-23 22:58:57,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:58:57,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:58:57,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:57,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:58:57,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:58:57,242 INFO L87 Difference]: Start difference. First operand 533 states and 722 transitions. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 5 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30) [2024-11-23 22:58:57,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:57,750 INFO L93 Difference]: Finished difference Result 1083 states and 1483 transitions. [2024-11-23 22:58:57,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:58:57,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 5 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30) Word has length 298 [2024-11-23 22:58:57,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:57,758 INFO L225 Difference]: With dead ends: 1083 [2024-11-23 22:58:57,758 INFO L226 Difference]: Without dead ends: 572 [2024-11-23 22:58:57,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 593 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:58:57,763 INFO L435 NwaCegarLoop]: 603 mSDtfsCounter, 21 mSDsluCounter, 2390 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2993 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:57,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2993 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 22:58:57,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-23 22:58:57,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-11-23 22:58:57,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 456 states have (on average 1.3421052631578947) internal successors, (612), 463 states have internal predecessors, (612), 83 states have call successors, (83), 33 states have call predecessors, (83), 32 states have return successors, (82), 80 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-23 22:58:57,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 777 transitions. [2024-11-23 22:58:57,796 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 777 transitions. Word has length 298 [2024-11-23 22:58:57,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:57,798 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 777 transitions. [2024-11-23 22:58:57,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 5 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30) [2024-11-23 22:58:57,799 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 777 transitions. [2024-11-23 22:58:57,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-23 22:58:57,804 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:57,804 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:57,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 22:58:58,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 22:58:58,006 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:58,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:58,006 INFO L85 PathProgramCache]: Analyzing trace with hash -2072629790, now seen corresponding path program 1 times [2024-11-23 22:58:58,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:58,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044891462] [2024-11-23 22:58:58,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:58,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:01,697 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-23 22:59:01,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:01,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044891462] [2024-11-23 22:59:01,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044891462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:01,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121967530] [2024-11-23 22:59:01,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:01,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:01,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:01,720 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:01,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 22:59:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:05,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 3544 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 22:59:05,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:06,301 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-23 22:59:06,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:59:08,138 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-23 22:59:08,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121967530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:59:08,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:59:08,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-11-23 22:59:08,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769577606] [2024-11-23 22:59:08,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:59:08,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:59:08,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:08,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:59:08,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:59:08,141 INFO L87 Difference]: Start difference. First operand 572 states and 777 transitions. Second operand has 8 states, 8 states have (on average 20.0) internal successors, (160), 8 states have internal predecessors, (160), 3 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-23 22:59:08,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:08,518 INFO L93 Difference]: Finished difference Result 1136 states and 1554 transitions. [2024-11-23 22:59:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:59:08,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.0) internal successors, (160), 8 states have internal predecessors, (160), 3 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 314 [2024-11-23 22:59:08,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:08,526 INFO L225 Difference]: With dead ends: 1136 [2024-11-23 22:59:08,526 INFO L226 Difference]: Without dead ends: 586 [2024-11-23 22:59:08,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 623 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:59:08,530 INFO L435 NwaCegarLoop]: 605 mSDtfsCounter, 31 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:08,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1814 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 22:59:08,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2024-11-23 22:59:08,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2024-11-23 22:59:08,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 468 states have (on average 1.3418803418803418) internal successors, (628), 476 states have internal predecessors, (628), 85 states have call successors, (85), 33 states have call predecessors, (85), 32 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-23 22:59:08,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 797 transitions. [2024-11-23 22:59:08,562 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 797 transitions. Word has length 314 [2024-11-23 22:59:08,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:08,563 INFO L471 AbstractCegarLoop]: Abstraction has 586 states and 797 transitions. [2024-11-23 22:59:08,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.0) internal successors, (160), 8 states have internal predecessors, (160), 3 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-23 22:59:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 797 transitions. [2024-11-23 22:59:08,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-23 22:59:08,568 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:08,568 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:08,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 22:59:08,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-23 22:59:08,769 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:08,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:08,769 INFO L85 PathProgramCache]: Analyzing trace with hash 971327364, now seen corresponding path program 1 times [2024-11-23 22:59:08,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:08,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228845731] [2024-11-23 22:59:08,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:08,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-23 22:59:11,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:11,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228845731] [2024-11-23 22:59:11,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228845731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:11,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:11,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:59:11,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622776410] [2024-11-23 22:59:11,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:11,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:59:11,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:11,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:59:11,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:59:11,255 INFO L87 Difference]: Start difference. First operand 586 states and 797 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:59:11,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:11,323 INFO L93 Difference]: Finished difference Result 1151 states and 1571 transitions. [2024-11-23 22:59:11,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:59:11,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 311 [2024-11-23 22:59:11,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:11,329 INFO L225 Difference]: With dead ends: 1151 [2024-11-23 22:59:11,330 INFO L226 Difference]: Without dead ends: 587 [2024-11-23 22:59:11,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:59:11,335 INFO L435 NwaCegarLoop]: 605 mSDtfsCounter, 0 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:11,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1208 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:59:11,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-11-23 22:59:11,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2024-11-23 22:59:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 469 states have (on average 1.3411513859275053) internal successors, (629), 477 states have internal predecessors, (629), 85 states have call successors, (85), 33 states have call predecessors, (85), 32 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-23 22:59:11,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 798 transitions. [2024-11-23 22:59:11,367 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 798 transitions. Word has length 311 [2024-11-23 22:59:11,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:11,368 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 798 transitions. [2024-11-23 22:59:11,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:59:11,368 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 798 transitions. [2024-11-23 22:59:11,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-23 22:59:11,373 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:11,373 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:11,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 22:59:11,373 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:11,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:11,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1880063004, now seen corresponding path program 1 times [2024-11-23 22:59:11,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:11,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857628932] [2024-11-23 22:59:11,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:11,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-23 22:59:13,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:13,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857628932] [2024-11-23 22:59:13,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857628932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:13,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96605807] [2024-11-23 22:59:13,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:13,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:13,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:13,775 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:13,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 22:59:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:18,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 3538 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 22:59:18,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2024-11-23 22:59:18,609 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:59:18,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96605807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:18,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:59:18,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-23 22:59:18,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335714270] [2024-11-23 22:59:18,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:18,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:59:18,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:18,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:59:18,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:59:18,612 INFO L87 Difference]: Start difference. First operand 587 states and 798 transitions. Second operand has 5 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 3 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:59:18,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:18,817 INFO L93 Difference]: Finished difference Result 1154 states and 1577 transitions. [2024-11-23 22:59:18,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:59:18,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 3 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 312 [2024-11-23 22:59:18,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:18,824 INFO L225 Difference]: With dead ends: 1154 [2024-11-23 22:59:18,824 INFO L226 Difference]: Without dead ends: 589 [2024-11-23 22:59:18,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:59:18,828 INFO L435 NwaCegarLoop]: 599 mSDtfsCounter, 18 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2383 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:18,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2383 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:59:18,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-11-23 22:59:18,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 587. [2024-11-23 22:59:18,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 469 states have (on average 1.3368869936034116) internal successors, (627), 477 states have internal predecessors, (627), 85 states have call successors, (85), 33 states have call predecessors, (85), 32 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-23 22:59:18,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 796 transitions. [2024-11-23 22:59:18,863 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 796 transitions. Word has length 312 [2024-11-23 22:59:18,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:18,867 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 796 transitions. [2024-11-23 22:59:18,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 3 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:59:18,868 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 796 transitions. [2024-11-23 22:59:18,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-23 22:59:18,873 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:18,874 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:18,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 22:59:19,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 22:59:19,074 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:19,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:19,075 INFO L85 PathProgramCache]: Analyzing trace with hash -2063887141, now seen corresponding path program 1 times [2024-11-23 22:59:19,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:19,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740625173] [2024-11-23 22:59:19,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:19,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:21,405 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-23 22:59:21,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:21,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740625173] [2024-11-23 22:59:21,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740625173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:21,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422597317] [2024-11-23 22:59:21,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:21,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:21,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:21,408 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:21,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 22:59:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:26,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 3519 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 22:59:26,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-23 22:59:26,861 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:59:26,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422597317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:26,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:59:26,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 22:59:26,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176983460] [2024-11-23 22:59:26,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:26,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:59:26,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:26,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:59:26,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:59:26,866 INFO L87 Difference]: Start difference. First operand 587 states and 796 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-23 22:59:27,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:27,020 INFO L93 Difference]: Finished difference Result 1154 states and 1570 transitions. [2024-11-23 22:59:27,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:59:27,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 314 [2024-11-23 22:59:27,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:27,027 INFO L225 Difference]: With dead ends: 1154 [2024-11-23 22:59:27,028 INFO L226 Difference]: Without dead ends: 589 [2024-11-23 22:59:27,030 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:59:27,031 INFO L435 NwaCegarLoop]: 602 mSDtfsCounter, 0 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1796 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:27,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1796 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:59:27,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-11-23 22:59:27,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2024-11-23 22:59:27,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 471 states have (on average 1.335456475583864) internal successors, (629), 479 states have internal predecessors, (629), 85 states have call successors, (85), 33 states have call predecessors, (85), 32 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-23 22:59:27,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 798 transitions. [2024-11-23 22:59:27,063 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 798 transitions. Word has length 314 [2024-11-23 22:59:27,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:27,064 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 798 transitions. [2024-11-23 22:59:27,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-23 22:59:27,064 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 798 transitions. [2024-11-23 22:59:27,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-11-23 22:59:27,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:27,069 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:27,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 22:59:27,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 22:59:27,270 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:27,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:27,271 INFO L85 PathProgramCache]: Analyzing trace with hash 614144726, now seen corresponding path program 1 times [2024-11-23 22:59:27,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:27,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976956932] [2024-11-23 22:59:27,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:27,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2024-11-23 22:59:29,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:29,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976956932] [2024-11-23 22:59:29,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976956932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:29,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585253804] [2024-11-23 22:59:29,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:29,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:29,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:29,589 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:29,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 22:59:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:34,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 3572 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-23 22:59:34,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:35,103 INFO L349 Elim1Store]: treesize reduction 236, result has 13.6 percent of original size [2024-11-23 22:59:35,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 200 treesize of output 207 [2024-11-23 22:59:35,899 INFO L349 Elim1Store]: treesize reduction 236, result has 13.6 percent of original size [2024-11-23 22:59:35,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 112 treesize of output 121 [2024-11-23 22:59:36,663 INFO L349 Elim1Store]: treesize reduction 236, result has 13.6 percent of original size [2024-11-23 22:59:36,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 83 treesize of output 92 [2024-11-23 22:59:36,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:59:36,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:59:36,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:59:36,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:59:37,065 INFO L224 Elim1Store]: Index analysis took 123 ms [2024-11-23 22:59:37,714 INFO L349 Elim1Store]: treesize reduction 267, result has 13.3 percent of original size [2024-11-23 22:59:37,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 77 treesize of output 83 [2024-11-23 22:59:38,529 INFO L349 Elim1Store]: treesize reduction 236, result has 13.6 percent of original size [2024-11-23 22:59:38,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 67 treesize of output 76 [2024-11-23 22:59:50,518 INFO L349 Elim1Store]: treesize reduction 80, result has 31.6 percent of original size [2024-11-23 22:59:50,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 34 treesize of output 52 [2024-11-23 22:59:53,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2024-11-23 22:59:53,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2024-11-23 22:59:54,713 INFO L349 Elim1Store]: treesize reduction 80, result has 31.6 percent of original size [2024-11-23 22:59:54,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 34 treesize of output 52 [2024-11-23 22:59:55,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2024-11-23 22:59:55,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2024-11-23 22:59:56,193 INFO L349 Elim1Store]: treesize reduction 80, result has 31.6 percent of original size [2024-11-23 22:59:56,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 34 treesize of output 52 [2024-11-23 22:59:57,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-11-23 22:59:57,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2024-11-23 22:59:59,646 INFO L224 Elim1Store]: Index analysis took 137 ms [2024-11-23 22:59:59,937 INFO L349 Elim1Store]: treesize reduction 108, result has 20.6 percent of original size [2024-11-23 22:59:59,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 69 [2024-11-23 23:00:15,022 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-23 23:00:15,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 20 [2024-11-23 23:00:19,311 INFO L349 Elim1Store]: treesize reduction 16, result has 95.9 percent of original size [2024-11-23 23:00:19,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 6 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 49 case distinctions, treesize of input 96 treesize of output 450 [2024-11-23 23:00:24,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-23 23:00:25,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-23 23:00:25,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-23 23:00:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-11-23 23:00:30,056 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:00:31,845 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_19154 (Array Int Int)) (v_ArrVal_19153 (Array Int Int))) (not (= (mod (+ |c_~#adapters_list_g~0.base| |c_~#adapters_list_g~0.offset|) 18446744073709551616) (mod (+ (select (select (store |c_#memory_$Pointer$#4.base| |c_mraid_mm_ioctl_~#signature~0#1.base| v_ArrVal_19154) |c_~#adapters_list_g~0.base|) |c_~#adapters_list_g~0.offset|) (select (select (store |c_#memory_$Pointer$#4.offset| |c_mraid_mm_ioctl_~#signature~0#1.base| v_ArrVal_19153) |c_~#adapters_list_g~0.base|) |c_~#adapters_list_g~0.offset|) 18446744073709516519) 18446744073709551616)))) is different from false [2024-11-23 23:00:34,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:00:34,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 59 [2024-11-23 23:00:34,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 83 [2024-11-23 23:00:34,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:00:34,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 71 [2024-11-23 23:00:34,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:00:34,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 99 [2024-11-23 23:00:34,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2024-11-23 23:00:34,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2024-11-23 23:00:39,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585253804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:00:39,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:00:39,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13] total 16 [2024-11-23 23:00:39,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562274181] [2024-11-23 23:00:39,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:00:39,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 23:00:39,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:39,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 23:00:39,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=340, Unknown=7, NotChecked=38, Total=462 [2024-11-23 23:00:39,066 INFO L87 Difference]: Start difference. First operand 589 states and 798 transitions. Second operand has 16 states, 16 states have (on average 16.6875) internal successors, (267), 14 states have internal predecessors, (267), 7 states have call successors, (57), 7 states have call predecessors, (57), 7 states have return successors, (52), 7 states have call predecessors, (52), 6 states have call successors, (52) [2024-11-23 23:00:43,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:00:47,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:00:51,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:00:55,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:00:59,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:01:03,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:01:07,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:01:11,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:01:15,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:02:00,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:02:00,574 INFO L93 Difference]: Finished difference Result 1885 states and 2548 transitions. [2024-11-23 23:02:00,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-23 23:02:00,575 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.6875) internal successors, (267), 14 states have internal predecessors, (267), 7 states have call successors, (57), 7 states have call predecessors, (57), 7 states have return successors, (52), 7 states have call predecessors, (52), 6 states have call successors, (52) Word has length 323 [2024-11-23 23:02:00,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:02:00,585 INFO L225 Difference]: With dead ends: 1885 [2024-11-23 23:02:00,586 INFO L226 Difference]: Without dead ends: 1318 [2024-11-23 23:02:00,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 519 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=225, Invalid=1103, Unknown=8, NotChecked=70, Total=1406 [2024-11-23 23:02:00,591 INFO L435 NwaCegarLoop]: 507 mSDtfsCounter, 1566 mSDsluCounter, 3116 mSDsCounter, 0 mSdLazyCounter, 3124 mSolverCounterSat, 313 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 3623 SdHoareTripleChecker+Invalid, 3446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 3124 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:02:00,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1654 Valid, 3623 Invalid, 3446 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [313 Valid, 3124 Invalid, 9 Unknown, 0 Unchecked, 73.4s Time] [2024-11-23 23:02:00,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2024-11-23 23:02:00,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1286. [2024-11-23 23:02:00,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1040 states have (on average 1.3298076923076922) internal successors, (1383), 1059 states have internal predecessors, (1383), 167 states have call successors, (167), 80 states have call predecessors, (167), 78 states have return successors, (169), 153 states have call predecessors, (169), 166 states have call successors, (169) [2024-11-23 23:02:00,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1719 transitions. [2024-11-23 23:02:00,735 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1719 transitions. Word has length 323 [2024-11-23 23:02:00,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:02:00,736 INFO L471 AbstractCegarLoop]: Abstraction has 1286 states and 1719 transitions. [2024-11-23 23:02:00,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.6875) internal successors, (267), 14 states have internal predecessors, (267), 7 states have call successors, (57), 7 states have call predecessors, (57), 7 states have return successors, (52), 7 states have call predecessors, (52), 6 states have call successors, (52) [2024-11-23 23:02:00,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1719 transitions. [2024-11-23 23:02:00,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-11-23 23:02:00,746 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:02:00,747 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:02:00,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 23:02:00,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 23:02:00,948 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:02:00,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:02:00,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1581234640, now seen corresponding path program 1 times [2024-11-23 23:02:00,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:02:00,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627762445] [2024-11-23 23:02:00,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:02:00,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:02:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:02:02,988 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-11-23 23:02:02,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:02:02,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627762445] [2024-11-23 23:02:02,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627762445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:02:02,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:02:02,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:02:02,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112099369] [2024-11-23 23:02:02,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:02:02,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:02:02,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:02:02,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:02:02,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:02:02,991 INFO L87 Difference]: Start difference. First operand 1286 states and 1719 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 23:02:07,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:02:07,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:02:07,224 INFO L93 Difference]: Finished difference Result 2554 states and 3415 transitions. [2024-11-23 23:02:07,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:02:07,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 325 [2024-11-23 23:02:07,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:02:07,235 INFO L225 Difference]: With dead ends: 2554 [2024-11-23 23:02:07,235 INFO L226 Difference]: Without dead ends: 1286 [2024-11-23 23:02:07,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:02:07,240 INFO L435 NwaCegarLoop]: 604 mSDtfsCounter, 0 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:02:07,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1203 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-11-23 23:02:07,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2024-11-23 23:02:07,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1282. [2024-11-23 23:02:07,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1036 states have (on average 1.3272200772200773) internal successors, (1375), 1055 states have internal predecessors, (1375), 167 states have call successors, (167), 80 states have call predecessors, (167), 78 states have return successors, (169), 153 states have call predecessors, (169), 166 states have call successors, (169) [2024-11-23 23:02:07,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1711 transitions. [2024-11-23 23:02:07,375 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1711 transitions. Word has length 325 [2024-11-23 23:02:07,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:02:07,375 INFO L471 AbstractCegarLoop]: Abstraction has 1282 states and 1711 transitions. [2024-11-23 23:02:07,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 23:02:07,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1711 transitions. [2024-11-23 23:02:07,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-11-23 23:02:07,387 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:02:07,387 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:02:07,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 23:02:07,388 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:02:07,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:02:07,389 INFO L85 PathProgramCache]: Analyzing trace with hash -2036570853, now seen corresponding path program 1 times [2024-11-23 23:02:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:02:07,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360150533] [2024-11-23 23:02:07,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:02:07,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:02:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:02:10,609 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-11-23 23:02:10,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:02:10,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360150533] [2024-11-23 23:02:10,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360150533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:02:10,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692910442] [2024-11-23 23:02:10,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:02:10,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:02:10,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:02:10,613 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:02:10,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:02:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:02:15,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 3759 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-23 23:02:15,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:02:17,656 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-23 23:02:17,656 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:02:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-11-23 23:02:22,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692910442] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:02:22,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:02:22,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 13 [2024-11-23 23:02:22,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186912765] [2024-11-23 23:02:22,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:02:22,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:02:22,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:02:22,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:02:22,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:02:22,629 INFO L87 Difference]: Start difference. First operand 1282 states and 1711 transitions. Second operand has 13 states, 10 states have (on average 20.8) internal successors, (208), 13 states have internal predecessors, (208), 5 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (41), 3 states have call predecessors, (41), 4 states have call successors, (41) [2024-11-23 23:02:25,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:02:25,512 INFO L93 Difference]: Finished difference Result 2491 states and 3372 transitions. [2024-11-23 23:02:25,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:02:25,513 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 20.8) internal successors, (208), 13 states have internal predecessors, (208), 5 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (41), 3 states have call predecessors, (41), 4 states have call successors, (41) Word has length 338 [2024-11-23 23:02:25,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:02:25,523 INFO L225 Difference]: With dead ends: 2491 [2024-11-23 23:02:25,524 INFO L226 Difference]: Without dead ends: 1551 [2024-11-23 23:02:25,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 669 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:02:25,530 INFO L435 NwaCegarLoop]: 695 mSDtfsCounter, 164 mSDsluCounter, 5516 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 6211 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:02:25,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 6211 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 23:02:25,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2024-11-23 23:02:25,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1551. [2024-11-23 23:02:25,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1551 states, 1276 states have (on average 1.335423197492163) internal successors, (1704), 1299 states have internal predecessors, (1704), 194 states have call successors, (194), 81 states have call predecessors, (194), 80 states have return successors, (203), 177 states have call predecessors, (203), 193 states have call successors, (203) [2024-11-23 23:02:25,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 2101 transitions. [2024-11-23 23:02:25,689 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 2101 transitions. Word has length 338 [2024-11-23 23:02:25,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:02:25,690 INFO L471 AbstractCegarLoop]: Abstraction has 1551 states and 2101 transitions. [2024-11-23 23:02:25,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 20.8) internal successors, (208), 13 states have internal predecessors, (208), 5 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (41), 3 states have call predecessors, (41), 4 states have call successors, (41) [2024-11-23 23:02:25,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 2101 transitions. [2024-11-23 23:02:25,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-11-23 23:02:25,699 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:02:25,700 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:02:25,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-23 23:02:25,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:02:25,901 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:02:25,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:02:25,901 INFO L85 PathProgramCache]: Analyzing trace with hash -465606222, now seen corresponding path program 1 times [2024-11-23 23:02:25,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:02:25,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137280659] [2024-11-23 23:02:25,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:02:25,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:02:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:02:28,932 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-11-23 23:02:28,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:02:28,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137280659] [2024-11-23 23:02:28,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137280659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:02:28,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324067007] [2024-11-23 23:02:28,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:02:28,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:02:28,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:02:28,937 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:02:28,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:02:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:02:33,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 3858 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 23:02:34,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:02:35,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2024-11-23 23:02:36,831 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 25 proven. 20 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-23 23:02:36,832 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:02:43,765 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 22 proven. 20 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2024-11-23 23:02:43,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324067007] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:02:43,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:02:43,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2024-11-23 23:02:43,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583810933] [2024-11-23 23:02:43,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:02:43,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 23:02:43,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:02:43,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 23:02:43,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:02:43,769 INFO L87 Difference]: Start difference. First operand 1551 states and 2101 transitions. Second operand has 15 states, 15 states have (on average 14.933333333333334) internal successors, (224), 15 states have internal predecessors, (224), 5 states have call successors, (46), 3 states have call predecessors, (46), 4 states have return successors, (41), 3 states have call predecessors, (41), 4 states have call successors, (41) [2024-11-23 23:02:47,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:02:47,888 INFO L93 Difference]: Finished difference Result 3158 states and 4347 transitions. [2024-11-23 23:02:47,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-23 23:02:47,889 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 14.933333333333334) internal successors, (224), 15 states have internal predecessors, (224), 5 states have call successors, (46), 3 states have call predecessors, (46), 4 states have return successors, (41), 3 states have call predecessors, (41), 4 states have call successors, (41) Word has length 349 [2024-11-23 23:02:47,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:02:47,899 INFO L225 Difference]: With dead ends: 3158 [2024-11-23 23:02:47,899 INFO L226 Difference]: Without dead ends: 1819 [2024-11-23 23:02:47,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:02:47,907 INFO L435 NwaCegarLoop]: 695 mSDtfsCounter, 97 mSDsluCounter, 5393 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 6088 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:02:47,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 6088 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-23 23:02:47,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2024-11-23 23:02:48,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1811. [2024-11-23 23:02:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1509 states have (on average 1.341948310139165) internal successors, (2025), 1535 states have internal predecessors, (2025), 221 states have call successors, (221), 81 states have call predecessors, (221), 80 states have return successors, (229), 201 states have call predecessors, (229), 220 states have call successors, (229) [2024-11-23 23:02:48,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2475 transitions. [2024-11-23 23:02:48,082 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2475 transitions. Word has length 349 [2024-11-23 23:02:48,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:02:48,083 INFO L471 AbstractCegarLoop]: Abstraction has 1811 states and 2475 transitions. [2024-11-23 23:02:48,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.933333333333334) internal successors, (224), 15 states have internal predecessors, (224), 5 states have call successors, (46), 3 states have call predecessors, (46), 4 states have return successors, (41), 3 states have call predecessors, (41), 4 states have call successors, (41) [2024-11-23 23:02:48,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2475 transitions. [2024-11-23 23:02:48,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-11-23 23:02:48,092 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:02:48,093 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:02:48,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-23 23:02:48,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:02:48,294 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:02:48,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:02:48,294 INFO L85 PathProgramCache]: Analyzing trace with hash -644436626, now seen corresponding path program 1 times [2024-11-23 23:02:48,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:02:48,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209663164] [2024-11-23 23:02:48,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:02:48,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:02:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:02:51,106 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2024-11-23 23:02:51,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:02:51,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209663164] [2024-11-23 23:02:51,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209663164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:02:51,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:02:51,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:02:51,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204233418] [2024-11-23 23:02:51,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:02:51,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:02:51,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:02:51,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:02:51,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:02:51,114 INFO L87 Difference]: Start difference. First operand 1811 states and 2475 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-23 23:02:55,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:02:55,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:02:55,539 INFO L93 Difference]: Finished difference Result 3461 states and 4725 transitions. [2024-11-23 23:02:55,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:02:55,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 327 [2024-11-23 23:02:55,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:02:55,553 INFO L225 Difference]: With dead ends: 3461 [2024-11-23 23:02:55,553 INFO L226 Difference]: Without dead ends: 1621 [2024-11-23 23:02:55,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:02:55,561 INFO L435 NwaCegarLoop]: 602 mSDtfsCounter, 0 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:02:55,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2393 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-23 23:02:55,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2024-11-23 23:02:55,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1445. [2024-11-23 23:02:55,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1210 states have (on average 1.3545454545454545) internal successors, (1639), 1230 states have internal predecessors, (1639), 172 states have call successors, (172), 62 states have call predecessors, (172), 62 states have return successors, (178), 159 states have call predecessors, (178), 171 states have call successors, (178) [2024-11-23 23:02:55,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1989 transitions. [2024-11-23 23:02:55,698 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1989 transitions. Word has length 327 [2024-11-23 23:02:55,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:02:55,699 INFO L471 AbstractCegarLoop]: Abstraction has 1445 states and 1989 transitions. [2024-11-23 23:02:55,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-23 23:02:55,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1989 transitions. [2024-11-23 23:02:55,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-11-23 23:02:55,707 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:02:55,707 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:02:55,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 23:02:55,708 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:02:55,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:02:55,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1006334444, now seen corresponding path program 1 times [2024-11-23 23:02:55,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:02:55,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672804472] [2024-11-23 23:02:55,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:02:55,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:02:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:02:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-23 23:02:59,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:02:59,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672804472] [2024-11-23 23:02:59,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672804472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:02:59,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133231585] [2024-11-23 23:02:59,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:02:59,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:02:59,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:02:59,164 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:02:59,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:03:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:04,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 3611 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 23:03:04,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:03:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-23 23:03:05,514 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:03:05,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133231585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:05,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:03:05,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-23 23:03:05,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068988200] [2024-11-23 23:03:05,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:05,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:03:05,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:05,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:03:05,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:03:05,518 INFO L87 Difference]: Start difference. First operand 1445 states and 1989 transitions. Second operand has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-23 23:03:06,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:06,035 INFO L93 Difference]: Finished difference Result 2486 states and 3424 transitions. [2024-11-23 23:03:06,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:03:06,036 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 327 [2024-11-23 23:03:06,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:06,043 INFO L225 Difference]: With dead ends: 2486 [2024-11-23 23:03:06,043 INFO L226 Difference]: Without dead ends: 1470 [2024-11-23 23:03:06,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:03:06,049 INFO L435 NwaCegarLoop]: 597 mSDtfsCounter, 10 mSDsluCounter, 2362 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2959 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:03:06,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2959 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:03:06,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2024-11-23 23:03:06,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1455. [2024-11-23 23:03:06,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1220 states have (on average 1.3540983606557377) internal successors, (1652), 1240 states have internal predecessors, (1652), 172 states have call successors, (172), 62 states have call predecessors, (172), 62 states have return successors, (178), 159 states have call predecessors, (178), 171 states have call successors, (178) [2024-11-23 23:03:06,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 2002 transitions. [2024-11-23 23:03:06,179 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 2002 transitions. Word has length 327 [2024-11-23 23:03:06,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:06,179 INFO L471 AbstractCegarLoop]: Abstraction has 1455 states and 2002 transitions. [2024-11-23 23:03:06,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-23 23:03:06,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 2002 transitions. [2024-11-23 23:03:06,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-23 23:03:06,187 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:06,187 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:06,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 23:03:06,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:03:06,388 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:06,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:06,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1702335075, now seen corresponding path program 1 times [2024-11-23 23:03:06,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:06,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189483560] [2024-11-23 23:03:06,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:06,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-23 23:03:09,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:09,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189483560] [2024-11-23 23:03:09,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189483560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:03:09,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865542027] [2024-11-23 23:03:09,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:09,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:03:09,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:03:09,506 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:03:09,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 23:03:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:22,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 3612 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 23:03:22,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:03:23,536 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-11-23 23:03:23,537 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:03:23,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865542027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:23,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:03:23,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-23 23:03:23,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99979702] [2024-11-23 23:03:23,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:23,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:03:23,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:23,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:03:23,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:03:23,539 INFO L87 Difference]: Start difference. First operand 1455 states and 2002 transitions. Second operand has 6 states, 5 states have (on average 32.4) internal successors, (162), 6 states have internal predecessors, (162), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2024-11-23 23:03:24,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:24,204 INFO L93 Difference]: Finished difference Result 2912 states and 4010 transitions. [2024-11-23 23:03:24,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:03:24,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 32.4) internal successors, (162), 6 states have internal predecessors, (162), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 329 [2024-11-23 23:03:24,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:24,216 INFO L225 Difference]: With dead ends: 2912 [2024-11-23 23:03:24,216 INFO L226 Difference]: Without dead ends: 1456 [2024-11-23 23:03:24,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:03:24,222 INFO L435 NwaCegarLoop]: 589 mSDtfsCounter, 4 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:03:24,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2929 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:03:24,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2024-11-23 23:03:24,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1456. [2024-11-23 23:03:24,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1221 states have (on average 1.3538083538083538) internal successors, (1653), 1241 states have internal predecessors, (1653), 172 states have call successors, (172), 62 states have call predecessors, (172), 62 states have return successors, (178), 159 states have call predecessors, (178), 171 states have call successors, (178) [2024-11-23 23:03:24,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 2003 transitions. [2024-11-23 23:03:24,345 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 2003 transitions. Word has length 329 [2024-11-23 23:03:24,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:24,346 INFO L471 AbstractCegarLoop]: Abstraction has 1456 states and 2003 transitions. [2024-11-23 23:03:24,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 32.4) internal successors, (162), 6 states have internal predecessors, (162), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2024-11-23 23:03:24,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 2003 transitions. [2024-11-23 23:03:24,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-23 23:03:24,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:24,354 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:24,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 23:03:24,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:03:24,555 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:24,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:24,556 INFO L85 PathProgramCache]: Analyzing trace with hash -67732351, now seen corresponding path program 1 times [2024-11-23 23:03:24,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:24,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793471702] [2024-11-23 23:03:24,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:24,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2024-11-23 23:03:27,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:27,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793471702] [2024-11-23 23:03:27,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793471702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:03:27,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576156509] [2024-11-23 23:03:27,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:27,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:03:27,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:03:27,476 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:03:27,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 23:03:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:35,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 3695 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 23:03:35,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:03:36,737 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2024-11-23 23:03:36,737 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:03:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-11-23 23:03:40,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576156509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:03:40,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:03:40,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-23 23:03:40,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817657837] [2024-11-23 23:03:40,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:03:40,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 23:03:40,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:40,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 23:03:40,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:03:40,573 INFO L87 Difference]: Start difference. First operand 1456 states and 2003 transitions. Second operand has 16 states, 14 states have (on average 17.857142857142858) internal successors, (250), 16 states have internal predecessors, (250), 4 states have call successors, (64), 2 states have call predecessors, (64), 5 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) [2024-11-23 23:03:42,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:42,579 INFO L93 Difference]: Finished difference Result 2922 states and 4038 transitions. [2024-11-23 23:03:42,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:03:42,579 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 17.857142857142858) internal successors, (250), 16 states have internal predecessors, (250), 4 states have call successors, (64), 2 states have call predecessors, (64), 5 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) Word has length 333 [2024-11-23 23:03:42,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:42,589 INFO L225 Difference]: With dead ends: 2922 [2024-11-23 23:03:42,589 INFO L226 Difference]: Without dead ends: 1465 [2024-11-23 23:03:42,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:03:42,596 INFO L435 NwaCegarLoop]: 589 mSDtfsCounter, 5 mSDsluCounter, 4684 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5273 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:03:42,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5273 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 23:03:42,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2024-11-23 23:03:42,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1465. [2024-11-23 23:03:42,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1228 states have (on average 1.3517915309446253) internal successors, (1660), 1248 states have internal predecessors, (1660), 173 states have call successors, (173), 63 states have call predecessors, (173), 63 states have return successors, (179), 160 states have call predecessors, (179), 172 states have call successors, (179) [2024-11-23 23:03:42,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2012 transitions. [2024-11-23 23:03:42,723 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2012 transitions. Word has length 333 [2024-11-23 23:03:42,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:42,723 INFO L471 AbstractCegarLoop]: Abstraction has 1465 states and 2012 transitions. [2024-11-23 23:03:42,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 17.857142857142858) internal successors, (250), 16 states have internal predecessors, (250), 4 states have call successors, (64), 2 states have call predecessors, (64), 5 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) [2024-11-23 23:03:42,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2012 transitions. [2024-11-23 23:03:42,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2024-11-23 23:03:42,731 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:42,731 INFO L218 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:42,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 23:03:42,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:03:42,932 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:42,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:42,933 INFO L85 PathProgramCache]: Analyzing trace with hash -536308928, now seen corresponding path program 2 times [2024-11-23 23:03:42,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:42,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565992391] [2024-11-23 23:03:42,933 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:03:42,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:45,380 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:03:45,381 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:03:47,152 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2024-11-23 23:03:47,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:47,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565992391] [2024-11-23 23:03:47,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565992391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:03:47,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424776543] [2024-11-23 23:03:47,153 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:03:47,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:03:47,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:03:47,155 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:03:47,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47872f8-8c8c-4c33-891f-6f1a9f1a563d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process