./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--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 230b725329634d718374ec3f6d82161758e5d9913588383fdc3e35a9fd1533f5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:23:40,519 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:23:40,612 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-27 23:23:40,620 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:23:40,620 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:23:40,656 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:23:40,657 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:23:40,657 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:23:40,657 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:23:40,657 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:23:40,658 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:23:40,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:23:40,658 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:23:40,658 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:23:40,658 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:23:40,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:23:40,658 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:23:40,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:23:40,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:23:40,659 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:23:40,659 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:23:40,659 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:23:40,659 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:23:40,659 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:23:40,659 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:23:40,659 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:23:40,660 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:23:40,660 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:23:40,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:23:40,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:40,662 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:23:40,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:23:40,663 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:23:40,663 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:23:40,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:40,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:23:40,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:23:40,663 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:23:40,663 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:23:40,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:23:40,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:23:40,663 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:23:40,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:23:40,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:23:40,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:23:40,664 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_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 230b725329634d718374ec3f6d82161758e5d9913588383fdc3e35a9fd1533f5 [2024-11-27 23:23:40,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:23:40,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:23:40,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:23:40,998 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:23:40,998 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:23:41,000 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2024-11-27 23:23:43,869 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/data/f65449cc5/f9a4b0becf8d46aeb8dcb01d601f2e3a/FLAG3704e146e [2024-11-27 23:23:44,427 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:23:44,428 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2024-11-27 23:23:44,483 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/data/f65449cc5/f9a4b0becf8d46aeb8dcb01d601f2e3a/FLAG3704e146e [2024-11-27 23:23:44,501 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/data/f65449cc5/f9a4b0becf8d46aeb8dcb01d601f2e3a [2024-11-27 23:23:44,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:23:44,506 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:23:44,509 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:23:44,509 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:23:44,513 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:23:44,514 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:23:44" (1/1) ... [2024-11-27 23:23:44,515 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@602a1211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:44, skipping insertion in model container [2024-11-27 23:23:44,515 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:23:44" (1/1) ... [2024-11-27 23:23:44,630 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:23:45,940 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_e7635672-970f-4e18-8863-c2710f1d1b5f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i[164687,164700] [2024-11-27 23:23:45,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:23:46,032 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:23:46,217 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; subl %2, %0; sete %1": "+m" (v->counter), "=qm" (c): "er" (i): "memory"); [4273-4274] [2024-11-27 23:23:46,224 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddb %b0, %1\n": "+q" (__ret), "+m" (v->counter): : "memory", "cc"); [4285-4286] [2024-11-27 23:23:46,224 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddw %w0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [4289-4290] [2024-11-27 23:23:46,225 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddl %0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [4293-4294] [2024-11-27 23:23:46,225 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddq %q0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [4297-4298] [2024-11-27 23:23:46,406 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_e7635672-970f-4e18-8863-c2710f1d1b5f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i[164687,164700] [2024-11-27 23:23:46,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:23:46,495 WARN L1212 FunctionHandler]: The following functions are not defined or handled internally: __xadd_wrong_size [2024-11-27 23:23:46,503 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:23:46,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:46 WrapperNode [2024-11-27 23:23:46,505 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:23:46,507 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:23:46,507 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:23:46,507 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:23:46,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:46" (1/1) ... [2024-11-27 23:23:46,570 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:46" (1/1) ... [2024-11-27 23:23:46,718 INFO L138 Inliner]: procedures = 147, calls = 882, calls flagged for inlining = 62, calls inlined = 60, statements flattened = 2112 [2024-11-27 23:23:46,719 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:23:46,720 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:23:46,720 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:23:46,720 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:23:46,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:46" (1/1) ... [2024-11-27 23:23:46,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:46" (1/1) ... [2024-11-27 23:23:46,754 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:46" (1/1) ... [2024-11-27 23:23:47,041 INFO L175 MemorySlicer]: Split 543 memory accesses to 16 slices as follows [2, 218, 14, 2, 2, 182, 5, 3, 2, 16, 14, 4, 3, 56, 12, 8]. 40 percent of accesses are in the largest equivalence class. The 258 initializations are split as follows [2, 17, 14, 0, 0, 182, 5, 3, 0, 16, 14, 3, 2, 0, 0, 0]. The 146 writes are split as follows [0, 81, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 51, 12, 0]. [2024-11-27 23:23:47,041 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:46" (1/1) ... [2024-11-27 23:23:47,041 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:46" (1/1) ... [2024-11-27 23:23:47,167 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:46" (1/1) ... [2024-11-27 23:23:47,177 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:46" (1/1) ... [2024-11-27 23:23:47,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:46" (1/1) ... [2024-11-27 23:23:47,227 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:46" (1/1) ... [2024-11-27 23:23:47,241 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:46" (1/1) ... [2024-11-27 23:23:47,276 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:23:47,277 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:23:47,277 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:23:47,277 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:23:47,282 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:46" (1/1) ... [2024-11-27 23:23:47,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:47,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:47,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:23:47,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:23:47,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-27 23:23:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-27 23:23:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-27 23:23:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-27 23:23:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-27 23:23:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-27 23:23:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-27 23:23:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-27 23:23:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-27 23:23:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-11-27 23:23:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2024-11-27 23:23:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2024-11-27 23:23:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2024-11-27 23:23:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#13 [2024-11-27 23:23:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#14 [2024-11-27 23:23:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#15 [2024-11-27 23:23:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2024-11-27 23:23:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2024-11-27 23:23:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2024-11-27 23:23:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2024-11-27 23:23:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2024-11-27 23:23:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2024-11-27 23:23:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2024-11-27 23:23:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2024-11-27 23:23:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2024-11-27 23:23:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#7 [2024-11-27 23:23:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#8 [2024-11-27 23:23:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#9 [2024-11-27 23:23:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#10 [2024-11-27 23:23:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#11 [2024-11-27 23:23:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#12 [2024-11-27 23:23:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#13 [2024-11-27 23:23:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#14 [2024-11-27 23:23:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#15 [2024-11-27 23:23:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-27 23:23:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-27 23:23:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-27 23:23:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-27 23:23:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-27 23:23:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-27 23:23:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-27 23:23:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-27 23:23:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-27 23:23:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-11-27 23:23:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2024-11-27 23:23:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#11 [2024-11-27 23:23:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#12 [2024-11-27 23:23:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#13 [2024-11-27 23:23:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#14 [2024-11-27 23:23:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#15 [2024-11-27 23:23:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-27 23:23:47,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-27 23:23:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 23:23:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 23:23:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 23:23:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-27 23:23:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-27 23:23:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-27 23:23:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-27 23:23:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-27 23:23:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-27 23:23:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-27 23:23:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-27 23:23:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-27 23:23:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-27 23:23:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-27 23:23:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-27 23:23:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-27 23:23:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-27 23:23:47,368 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-27 23:23:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2024-11-27 23:23:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2024-11-27 23:23:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2024-11-27 23:23:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2024-11-27 23:23:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2024-11-27 23:23:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2024-11-27 23:23:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2024-11-27 23:23:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#7 [2024-11-27 23:23:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#8 [2024-11-27 23:23:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#9 [2024-11-27 23:23:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#10 [2024-11-27 23:23:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#11 [2024-11-27 23:23:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#12 [2024-11-27 23:23:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#13 [2024-11-27 23:23:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#14 [2024-11-27 23:23:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#15 [2024-11-27 23:23:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2024-11-27 23:23:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2024-11-27 23:23:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2024-11-27 23:23:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2024-11-27 23:23:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2024-11-27 23:23:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2024-11-27 23:23:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2024-11-27 23:23:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#7 [2024-11-27 23:23:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#8 [2024-11-27 23:23:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#9 [2024-11-27 23:23:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#10 [2024-11-27 23:23:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#11 [2024-11-27 23:23:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#12 [2024-11-27 23:23:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#13 [2024-11-27 23:23:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#14 [2024-11-27 23:23:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#15 [2024-11-27 23:23:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-27 23:23:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-27 23:23:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure get_rdac_data [2024-11-27 23:23:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rdac_data [2024-11-27 23:23:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure blk_put_request [2024-11-27 23:23:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_put_request [2024-11-27 23:23:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2024-11-27 23:23:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2024-11-27 23:23:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-27 23:23:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-27 23:23:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 23:23:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 23:23:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 23:23:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-27 23:23:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-27 23:23:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-27 23:23:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-27 23:23:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-27 23:23:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-27 23:23:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-27 23:23:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-27 23:23:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-27 23:23:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-27 23:23:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-27 23:23:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-27 23:23:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-27 23:23:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-27 23:23:47,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-27 23:23:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure send_mode_select [2024-11-27 23:23:47,380 INFO L138 BoogieDeclarations]: Found implementation of procedure send_mode_select [2024-11-27 23:23:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2024-11-27 23:23:47,380 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2024-11-27 23:23:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-27 23:23:47,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-27 23:23:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-27 23:23:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-27 23:23:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-27 23:23:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2024-11-27 23:23:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2024-11-27 23:23:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#5 [2024-11-27 23:23:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#6 [2024-11-27 23:23:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#7 [2024-11-27 23:23:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#8 [2024-11-27 23:23:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#9 [2024-11-27 23:23:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#10 [2024-11-27 23:23:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#11 [2024-11-27 23:23:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#12 [2024-11-27 23:23:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#13 [2024-11-27 23:23:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#14 [2024-11-27 23:23:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#15 [2024-11-27 23:23:47,381 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-27 23:23:47,381 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-27 23:23:47,381 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-27 23:23:47,381 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2024-11-27 23:23:47,381 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2024-11-27 23:23:47,381 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#5 [2024-11-27 23:23:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#6 [2024-11-27 23:23:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#7 [2024-11-27 23:23:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#8 [2024-11-27 23:23:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#9 [2024-11-27 23:23:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#10 [2024-11-27 23:23:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#11 [2024-11-27 23:23:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#12 [2024-11-27 23:23:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#13 [2024-11-27 23:23:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#14 [2024-11-27 23:23:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#15 [2024-11-27 23:23:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-27 23:23:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-27 23:23:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 23:23:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 23:23:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 23:23:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2024-11-27 23:23:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2024-11-27 23:23:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_unregister_device_handler [2024-11-27 23:23:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_unregister_device_handler [2024-11-27 23:23:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2024-11-27 23:23:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2024-11-27 23:23:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2024-11-27 23:23:47,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2024-11-27 23:23:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:23:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure submit_inquiry [2024-11-27 23:23:47,383 INFO L138 BoogieDeclarations]: Found implementation of procedure submit_inquiry [2024-11-27 23:23:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_bus_detach [2024-11-27 23:23:47,383 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_bus_detach [2024-11-27 23:23:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_match [2024-11-27 23:23:47,386 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_match [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2024-11-27 23:23:47,386 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure blk_execute_rq [2024-11-27 23:23:47,386 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_execute_rq [2024-11-27 23:23:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-27 23:23:47,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure sdev_prefix_printk [2024-11-27 23:23:47,387 INFO L138 BoogieDeclarations]: Found implementation of procedure sdev_prefix_printk [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2024-11-27 23:23:47,387 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2024-11-27 23:23:47,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure check_ownership [2024-11-27 23:23:47,387 INFO L138 BoogieDeclarations]: Found implementation of procedure check_ownership [2024-11-27 23:23:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2024-11-27 23:23:47,388 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure get_rdac_req [2024-11-27 23:23:47,388 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rdac_req [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-27 23:23:47,388 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2024-11-27 23:23:47,388 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2024-11-27 23:23:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2024-11-27 23:23:47,389 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2024-11-27 23:23:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2024-11-27 23:23:47,389 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2024-11-27 23:23:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2024-11-27 23:23:47,389 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2024-11-27 23:23:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2024-11-27 23:23:47,391 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2024-11-27 23:23:47,392 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2024-11-27 23:23:47,392 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2024-11-27 23:23:47,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:23:47,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 23:23:47,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 23:23:47,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 23:23:47,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-27 23:23:47,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-27 23:23:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-27 23:23:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-27 23:23:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-27 23:23:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-27 23:23:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-27 23:23:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-27 23:23:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-27 23:23:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-27 23:23:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-27 23:23:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-27 23:23:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2024-11-27 23:23:47,397 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2024-11-27 23:23:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2024-11-27 23:23:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2024-11-27 23:23:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2024-11-27 23:23:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2024-11-27 23:23:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2024-11-27 23:23:47,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2024-11-27 23:23:47,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2024-11-27 23:23:47,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#7 [2024-11-27 23:23:47,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#8 [2024-11-27 23:23:47,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#9 [2024-11-27 23:23:47,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#10 [2024-11-27 23:23:47,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#11 [2024-11-27 23:23:47,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#12 [2024-11-27 23:23:47,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#13 [2024-11-27 23:23:47,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#14 [2024-11-27 23:23:47,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#15 [2024-11-27 23:23:47,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:23:47,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:23:47,398 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2024-11-27 23:23:47,398 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2024-11-27 23:23:48,104 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:23:48,108 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:23:48,775 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-27 23:23:55,768 INFO L? ?]: Removed 1138 outVars from TransFormulas that were not future-live. [2024-11-27 23:23:55,770 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:23:55,819 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:23:55,820 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 23:23:55,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:23:55 BoogieIcfgContainer [2024-11-27 23:23:55,820 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:23:55,827 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:23:55,827 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:23:55,835 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:23:55,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:23:44" (1/3) ... [2024-11-27 23:23:55,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a7a952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:23:55, skipping insertion in model container [2024-11-27 23:23:55,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:46" (2/3) ... [2024-11-27 23:23:55,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a7a952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:23:55, skipping insertion in model container [2024-11-27 23:23:55,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:23:55" (3/3) ... [2024-11-27 23:23:55,839 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2024-11-27 23:23:55,857 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:23:55,859 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i that has 72 procedures, 767 locations, 1 initial locations, 49 loop locations, and 2 error locations. [2024-11-27 23:23:55,958 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:23:55,976 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;@76f09bf8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:23:55,977 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-27 23:23:55,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 635 states, 466 states have (on average 1.388412017167382) internal successors, (647), 487 states have internal predecessors, (647), 125 states have call successors, (125), 42 states have call predecessors, (125), 41 states have return successors, (121), 120 states have call predecessors, (121), 121 states have call successors, (121) [2024-11-27 23:23:56,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-27 23:23:56,000 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:23:56,001 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:56,002 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:23:56,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:56,009 INFO L85 PathProgramCache]: Analyzing trace with hash -937186055, now seen corresponding path program 1 times [2024-11-27 23:23:56,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:56,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384026926] [2024-11-27 23:23:56,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:56,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-27 23:23:57,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:57,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384026926] [2024-11-27 23:23:57,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384026926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:57,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058563313] [2024-11-27 23:23:57,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:57,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:57,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:57,971 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:57,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:23:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:59,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:23:59,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:00,014 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 23:24:00,014 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:00,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058563313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:00,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:24:00,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 23:24:00,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518607582] [2024-11-27 23:24:00,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:00,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:24:00,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:00,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:24:00,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:24:00,047 INFO L87 Difference]: Start difference. First operand has 635 states, 466 states have (on average 1.388412017167382) internal successors, (647), 487 states have internal predecessors, (647), 125 states have call successors, (125), 42 states have call predecessors, (125), 41 states have return successors, (121), 120 states have call predecessors, (121), 121 states have call successors, (121) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:24:00,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:00,190 INFO L93 Difference]: Finished difference Result 1264 states and 1822 transitions. [2024-11-27 23:24:00,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:24:00,192 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2024-11-27 23:24:00,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:00,208 INFO L225 Difference]: With dead ends: 1264 [2024-11-27 23:24:00,209 INFO L226 Difference]: Without dead ends: 615 [2024-11-27 23:24:00,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:24:00,223 INFO L435 NwaCegarLoop]: 884 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, 884 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 [2024-11-27 23:24:00,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:24:00,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-11-27 23:24:00,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2024-11-27 23:24:00,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 454 states have (on average 1.3722466960352422) internal successors, (623), 469 states have internal predecessors, (623), 119 states have call successors, (119), 41 states have call predecessors, (119), 40 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2024-11-27 23:24:00,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 860 transitions. [2024-11-27 23:24:00,326 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 860 transitions. Word has length 74 [2024-11-27 23:24:00,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:00,326 INFO L471 AbstractCegarLoop]: Abstraction has 615 states and 860 transitions. [2024-11-27 23:24:00,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:24:00,327 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 860 transitions. [2024-11-27 23:24:00,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-27 23:24:00,330 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:00,331 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:00,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:24:00,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:00,535 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:00,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:00,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1006071169, now seen corresponding path program 1 times [2024-11-27 23:24:00,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:00,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19287020] [2024-11-27 23:24:00,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:00,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-27 23:24:01,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:01,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19287020] [2024-11-27 23:24:01,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19287020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:01,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:01,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:24:01,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726701627] [2024-11-27 23:24:01,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:01,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:24:01,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:01,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:24:01,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:24:01,543 INFO L87 Difference]: Start difference. First operand 615 states and 860 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-27 23:24:01,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:01,776 INFO L93 Difference]: Finished difference Result 1448 states and 2004 transitions. [2024-11-27 23:24:01,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:24:01,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 74 [2024-11-27 23:24:01,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:01,790 INFO L225 Difference]: With dead ends: 1448 [2024-11-27 23:24:01,790 INFO L226 Difference]: Without dead ends: 850 [2024-11-27 23:24:01,793 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 [2024-11-27 23:24:01,795 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 321 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:01,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1673 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:24:01,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2024-11-27 23:24:01,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 845. [2024-11-27 23:24:01,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 626 states have (on average 1.354632587859425) internal successors, (848), 643 states have internal predecessors, (848), 156 states have call successors, (156), 62 states have call predecessors, (156), 61 states have return successors, (155), 154 states have call predecessors, (155), 155 states have call successors, (155) [2024-11-27 23:24:01,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1159 transitions. [2024-11-27 23:24:01,890 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1159 transitions. Word has length 74 [2024-11-27 23:24:01,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:01,891 INFO L471 AbstractCegarLoop]: Abstraction has 845 states and 1159 transitions. [2024-11-27 23:24:01,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-27 23:24:01,891 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1159 transitions. [2024-11-27 23:24:01,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-27 23:24:01,900 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:01,900 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-27 23:24:01,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:24:01,900 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:01,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:01,901 INFO L85 PathProgramCache]: Analyzing trace with hash -868623022, now seen corresponding path program 1 times [2024-11-27 23:24:01,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:01,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702456742] [2024-11-27 23:24:01,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:01,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:03,519 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-27 23:24:03,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:03,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702456742] [2024-11-27 23:24:03,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702456742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:03,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:03,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:24:03,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778453721] [2024-11-27 23:24:03,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:03,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:24:03,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:03,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:24:03,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:24:03,523 INFO L87 Difference]: Start difference. First operand 845 states and 1159 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-27 23:24:03,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:03,691 INFO L93 Difference]: Finished difference Result 1668 states and 2293 transitions. [2024-11-27 23:24:03,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:24:03,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 112 [2024-11-27 23:24:03,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:03,703 INFO L225 Difference]: With dead ends: 1668 [2024-11-27 23:24:03,703 INFO L226 Difference]: Without dead ends: 850 [2024-11-27 23:24:03,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:24:03,710 INFO L435 NwaCegarLoop]: 860 mSDtfsCounter, 6 mSDsluCounter, 2552 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3412 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:03,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 3412 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:24:03,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2024-11-27 23:24:03,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 848. [2024-11-27 23:24:03,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 629 states have (on average 1.3529411764705883) internal successors, (851), 646 states have internal predecessors, (851), 156 states have call successors, (156), 62 states have call predecessors, (156), 61 states have return successors, (155), 154 states have call predecessors, (155), 155 states have call successors, (155) [2024-11-27 23:24:03,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1162 transitions. [2024-11-27 23:24:03,787 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1162 transitions. Word has length 112 [2024-11-27 23:24:03,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:03,788 INFO L471 AbstractCegarLoop]: Abstraction has 848 states and 1162 transitions. [2024-11-27 23:24:03,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-27 23:24:03,789 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1162 transitions. [2024-11-27 23:24:03,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-27 23:24:03,794 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:03,794 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-27 23:24:03,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:24:03,795 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:03,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:03,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1265682584, now seen corresponding path program 1 times [2024-11-27 23:24:03,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:03,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37126184] [2024-11-27 23:24:03,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:03,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-27 23:24:04,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:04,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37126184] [2024-11-27 23:24:04,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37126184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:04,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:04,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:24:04,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899918287] [2024-11-27 23:24:04,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:04,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:24:04,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:04,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:24:04,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:24:04,918 INFO L87 Difference]: Start difference. First operand 848 states and 1162 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-27 23:24:04,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:04,976 INFO L93 Difference]: Finished difference Result 852 states and 1166 transitions. [2024-11-27 23:24:04,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:24:04,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 115 [2024-11-27 23:24:04,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:04,987 INFO L225 Difference]: With dead ends: 852 [2024-11-27 23:24:04,987 INFO L226 Difference]: Without dead ends: 849 [2024-11-27 23:24:04,988 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 [2024-11-27 23:24:04,990 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 0 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:04,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1712 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:24:04,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2024-11-27 23:24:05,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2024-11-27 23:24:05,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 630 states have (on average 1.3523809523809525) internal successors, (852), 647 states have internal predecessors, (852), 156 states have call successors, (156), 62 states have call predecessors, (156), 61 states have return successors, (155), 154 states have call predecessors, (155), 155 states have call successors, (155) [2024-11-27 23:24:05,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1163 transitions. [2024-11-27 23:24:05,053 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1163 transitions. Word has length 115 [2024-11-27 23:24:05,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:05,053 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1163 transitions. [2024-11-27 23:24:05,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-27 23:24:05,054 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1163 transitions. [2024-11-27 23:24:05,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-27 23:24:05,057 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:05,058 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-27 23:24:05,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:24:05,058 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:05,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:05,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1324395763, now seen corresponding path program 1 times [2024-11-27 23:24:05,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:05,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193567552] [2024-11-27 23:24:05,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:05,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-27 23:24:06,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:06,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193567552] [2024-11-27 23:24:06,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193567552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:06,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:06,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:24:06,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120649493] [2024-11-27 23:24:06,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:06,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:06,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:06,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:06,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:24:06,537 INFO L87 Difference]: Start difference. First operand 849 states and 1163 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:24:06,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:06,690 INFO L93 Difference]: Finished difference Result 1768 states and 2422 transitions. [2024-11-27 23:24:06,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:24:06,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 117 [2024-11-27 23:24:06,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:06,703 INFO L225 Difference]: With dead ends: 1768 [2024-11-27 23:24:06,704 INFO L226 Difference]: Without dead ends: 946 [2024-11-27 23:24:06,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:24:06,710 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 650 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:06,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 2017 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:24:06,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2024-11-27 23:24:06,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 928. [2024-11-27 23:24:06,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 679 states have (on average 1.346097201767305) internal successors, (914), 704 states have internal predecessors, (914), 173 states have call successors, (173), 77 states have call predecessors, (173), 74 states have return successors, (177), 165 states have call predecessors, (177), 172 states have call successors, (177) [2024-11-27 23:24:06,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1264 transitions. [2024-11-27 23:24:06,796 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1264 transitions. Word has length 117 [2024-11-27 23:24:06,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:06,797 INFO L471 AbstractCegarLoop]: Abstraction has 928 states and 1264 transitions. [2024-11-27 23:24:06,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:24:06,798 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1264 transitions. [2024-11-27 23:24:06,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-27 23:24:06,817 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:06,818 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:24:06,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:24:06,819 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:06,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:06,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1456639218, now seen corresponding path program 1 times [2024-11-27 23:24:06,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:06,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945929918] [2024-11-27 23:24:06,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:06,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-27 23:24:08,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:08,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945929918] [2024-11-27 23:24:08,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945929918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:08,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268277990] [2024-11-27 23:24:08,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:08,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:08,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:08,452 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:08,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:24:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:10,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 2775 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:24:10,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-27 23:24:11,029 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:11,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268277990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:11,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:24:11,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-27 23:24:11,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934408661] [2024-11-27 23:24:11,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:11,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:24:11,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:11,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:24:11,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:24:11,032 INFO L87 Difference]: Start difference. First operand 928 states and 1264 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 5 states have internal predecessors, (122), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-27 23:24:11,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:11,188 INFO L93 Difference]: Finished difference Result 1835 states and 2507 transitions. [2024-11-27 23:24:11,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:24:11,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 5 states have internal predecessors, (122), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 217 [2024-11-27 23:24:11,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:11,198 INFO L225 Difference]: With dead ends: 1835 [2024-11-27 23:24:11,198 INFO L226 Difference]: Without dead ends: 934 [2024-11-27 23:24:11,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:24:11,204 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 3 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4264 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:11,204 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4264 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:24:11,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2024-11-27 23:24:11,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 933. [2024-11-27 23:24:11,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 683 states have (on average 1.3440702781844802) internal successors, (918), 707 states have internal predecessors, (918), 173 states have call successors, (173), 77 states have call predecessors, (173), 75 states have return successors, (181), 166 states have call predecessors, (181), 172 states have call successors, (181) [2024-11-27 23:24:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1272 transitions. [2024-11-27 23:24:11,260 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1272 transitions. Word has length 217 [2024-11-27 23:24:11,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:11,261 INFO L471 AbstractCegarLoop]: Abstraction has 933 states and 1272 transitions. [2024-11-27 23:24:11,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 5 states have internal predecessors, (122), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-27 23:24:11,261 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1272 transitions. [2024-11-27 23:24:11,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-27 23:24:11,269 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:11,269 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:24:11,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:24:11,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:11,470 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:11,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:11,470 INFO L85 PathProgramCache]: Analyzing trace with hash -546305679, now seen corresponding path program 1 times [2024-11-27 23:24:11,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:11,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904588346] [2024-11-27 23:24:11,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:11,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:13,058 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-27 23:24:13,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:13,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904588346] [2024-11-27 23:24:13,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904588346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:13,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370157462] [2024-11-27 23:24:13,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:13,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:13,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:13,062 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:13,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:24:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:15,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 2767 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:24:15,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-27 23:24:15,429 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:15,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370157462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:15,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:24:15,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-27 23:24:15,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940583574] [2024-11-27 23:24:15,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:15,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:24:15,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:15,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:24:15,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:24:15,431 INFO L87 Difference]: Start difference. First operand 933 states and 1272 transitions. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-27 23:24:15,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:15,654 INFO L93 Difference]: Finished difference Result 1842 states and 2517 transitions. [2024-11-27 23:24:15,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:24:15,656 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 217 [2024-11-27 23:24:15,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:15,666 INFO L225 Difference]: With dead ends: 1842 [2024-11-27 23:24:15,666 INFO L226 Difference]: Without dead ends: 936 [2024-11-27 23:24:15,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:24:15,672 INFO L435 NwaCegarLoop]: 854 mSDtfsCounter, 2 mSDsluCounter, 5095 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5949 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:15,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5949 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:24:15,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2024-11-27 23:24:15,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 936. [2024-11-27 23:24:15,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 686 states have (on average 1.3425655976676385) internal successors, (921), 710 states have internal predecessors, (921), 173 states have call successors, (173), 77 states have call predecessors, (173), 75 states have return successors, (181), 166 states have call predecessors, (181), 172 states have call successors, (181) [2024-11-27 23:24:15,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1275 transitions. [2024-11-27 23:24:15,733 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1275 transitions. Word has length 217 [2024-11-27 23:24:15,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:15,734 INFO L471 AbstractCegarLoop]: Abstraction has 936 states and 1275 transitions. [2024-11-27 23:24:15,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-27 23:24:15,735 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1275 transitions. [2024-11-27 23:24:15,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-27 23:24:15,743 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:15,744 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:24:15,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:24:15,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:15,944 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:15,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:15,945 INFO L85 PathProgramCache]: Analyzing trace with hash 703306799, now seen corresponding path program 1 times [2024-11-27 23:24:15,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:15,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425185394] [2024-11-27 23:24:15,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:15,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-27 23:24:17,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:17,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425185394] [2024-11-27 23:24:17,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425185394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:17,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720749136] [2024-11-27 23:24:17,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:17,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:17,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:17,193 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:17,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:24:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:18,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 2925 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:24:18,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-27 23:24:19,173 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:19,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720749136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:19,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:24:19,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-27 23:24:19,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872047830] [2024-11-27 23:24:19,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:19,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:24:19,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:19,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:24:19,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:24:19,176 INFO L87 Difference]: Start difference. First operand 936 states and 1275 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-27 23:24:19,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:19,406 INFO L93 Difference]: Finished difference Result 1854 states and 2534 transitions. [2024-11-27 23:24:19,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:24:19,406 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) Word has length 233 [2024-11-27 23:24:19,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:19,415 INFO L225 Difference]: With dead ends: 1854 [2024-11-27 23:24:19,415 INFO L226 Difference]: Without dead ends: 945 [2024-11-27 23:24:19,420 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:24:19,420 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 4 mSDsluCounter, 5100 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5955 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:19,421 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5955 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:24:19,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2024-11-27 23:24:19,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 937. [2024-11-27 23:24:19,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 686 states have (on average 1.3425655976676385) internal successors, (921), 711 states have internal predecessors, (921), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 167 states have call predecessors, (182), 173 states have call successors, (182) [2024-11-27 23:24:19,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1277 transitions. [2024-11-27 23:24:19,471 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1277 transitions. Word has length 233 [2024-11-27 23:24:19,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:19,471 INFO L471 AbstractCegarLoop]: Abstraction has 937 states and 1277 transitions. [2024-11-27 23:24:19,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-27 23:24:19,472 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1277 transitions. [2024-11-27 23:24:19,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-27 23:24:19,480 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:19,480 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:24:19,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:24:19,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:19,685 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:19,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:19,685 INFO L85 PathProgramCache]: Analyzing trace with hash -512846927, now seen corresponding path program 1 times [2024-11-27 23:24:19,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:19,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754432097] [2024-11-27 23:24:19,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:19,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:21,075 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-27 23:24:21,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:21,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754432097] [2024-11-27 23:24:21,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754432097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:21,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:21,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:24:21,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824677012] [2024-11-27 23:24:21,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:21,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:24:21,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:21,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:24:21,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:24:21,078 INFO L87 Difference]: Start difference. First operand 937 states and 1277 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-27 23:24:21,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:21,196 INFO L93 Difference]: Finished difference Result 1854 states and 2535 transitions. [2024-11-27 23:24:21,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:24:21,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 233 [2024-11-27 23:24:21,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:21,205 INFO L225 Difference]: With dead ends: 1854 [2024-11-27 23:24:21,206 INFO L226 Difference]: Without dead ends: 944 [2024-11-27 23:24:21,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:24:21,210 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 3 mSDsluCounter, 3410 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4267 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:21,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4267 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:24:21,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2024-11-27 23:24:21,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2024-11-27 23:24:21,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 690 states have (on average 1.3405797101449275) internal successors, (925), 714 states have internal predecessors, (925), 174 states have call successors, (174), 77 states have call predecessors, (174), 76 states have return successors, (186), 168 states have call predecessors, (186), 173 states have call successors, (186) [2024-11-27 23:24:21,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1285 transitions. [2024-11-27 23:24:21,256 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1285 transitions. Word has length 233 [2024-11-27 23:24:21,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:21,257 INFO L471 AbstractCegarLoop]: Abstraction has 942 states and 1285 transitions. [2024-11-27 23:24:21,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-27 23:24:21,258 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1285 transitions. [2024-11-27 23:24:21,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-27 23:24:21,266 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:21,266 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:24:21,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:24:21,266 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:21,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:21,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1403278157, now seen corresponding path program 1 times [2024-11-27 23:24:21,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:21,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847905157] [2024-11-27 23:24:21,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:21,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:22,671 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-27 23:24:22,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:22,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847905157] [2024-11-27 23:24:22,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847905157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:22,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:22,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:24:22,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545138395] [2024-11-27 23:24:22,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:22,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:24:22,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:22,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:24:22,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:24:22,675 INFO L87 Difference]: Start difference. First operand 942 states and 1285 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-27 23:24:22,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:22,801 INFO L93 Difference]: Finished difference Result 1860 states and 2543 transitions. [2024-11-27 23:24:22,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:24:22,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 249 [2024-11-27 23:24:22,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:22,812 INFO L225 Difference]: With dead ends: 1860 [2024-11-27 23:24:22,812 INFO L226 Difference]: Without dead ends: 945 [2024-11-27 23:24:22,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:24:22,819 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 1 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4307 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:22,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4307 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:24:22,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2024-11-27 23:24:22,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 939. [2024-11-27 23:24:22,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 688 states have (on average 1.3415697674418605) internal successors, (923), 712 states have internal predecessors, (923), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 168 states have call predecessors, (182), 173 states have call successors, (182) [2024-11-27 23:24:22,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1279 transitions. [2024-11-27 23:24:22,875 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1279 transitions. Word has length 249 [2024-11-27 23:24:22,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:22,876 INFO L471 AbstractCegarLoop]: Abstraction has 939 states and 1279 transitions. [2024-11-27 23:24:22,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-27 23:24:22,876 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1279 transitions. [2024-11-27 23:24:22,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-27 23:24:22,886 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:22,886 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:24:22,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 23:24:22,886 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:22,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:22,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1912751247, now seen corresponding path program 1 times [2024-11-27 23:24:22,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:22,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609115679] [2024-11-27 23:24:22,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:22,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-27 23:24:25,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:25,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609115679] [2024-11-27 23:24:25,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609115679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:25,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631136370] [2024-11-27 23:24:25,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:25,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:25,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:25,121 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:25,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:24:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:26,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 3077 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:24:26,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-27 23:24:27,035 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:27,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631136370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:27,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:24:27,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-27 23:24:27,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419803793] [2024-11-27 23:24:27,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:27,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:24:27,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:27,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:24:27,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:24:27,038 INFO L87 Difference]: Start difference. First operand 939 states and 1279 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-27 23:24:27,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:27,164 INFO L93 Difference]: Finished difference Result 1854 states and 2531 transitions. [2024-11-27 23:24:27,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:24:27,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 249 [2024-11-27 23:24:27,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:27,173 INFO L225 Difference]: With dead ends: 1854 [2024-11-27 23:24:27,174 INFO L226 Difference]: Without dead ends: 942 [2024-11-27 23:24:27,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:24:27,178 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 0 mSDsluCounter, 2552 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3409 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:27,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3409 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:24:27,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2024-11-27 23:24:27,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 939. [2024-11-27 23:24:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 688 states have (on average 1.3415697674418605) internal successors, (923), 712 states have internal predecessors, (923), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 168 states have call predecessors, (182), 173 states have call successors, (182) [2024-11-27 23:24:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1279 transitions. [2024-11-27 23:24:27,224 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1279 transitions. Word has length 249 [2024-11-27 23:24:27,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:27,225 INFO L471 AbstractCegarLoop]: Abstraction has 939 states and 1279 transitions. [2024-11-27 23:24:27,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-27 23:24:27,225 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1279 transitions. [2024-11-27 23:24:27,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-27 23:24:27,233 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:27,234 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:24:27,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 23:24:27,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 23:24:27,436 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:27,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:27,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1440078136, now seen corresponding path program 1 times [2024-11-27 23:24:27,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:27,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786696440] [2024-11-27 23:24:27,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:27,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-27 23:24:28,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:28,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786696440] [2024-11-27 23:24:28,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786696440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:28,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:28,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:24:28,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6692426] [2024-11-27 23:24:28,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:28,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:24:28,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:28,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:24:28,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:24:28,581 INFO L87 Difference]: Start difference. First operand 939 states and 1279 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-27 23:24:28,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:28,639 INFO L93 Difference]: Finished difference Result 1852 states and 2529 transitions. [2024-11-27 23:24:28,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:24:28,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 270 [2024-11-27 23:24:28,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:28,649 INFO L225 Difference]: With dead ends: 1852 [2024-11-27 23:24:28,649 INFO L226 Difference]: Without dead ends: 940 [2024-11-27 23:24:28,654 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 [2024-11-27 23:24:28,656 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 0 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:28,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1712 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:24:28,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2024-11-27 23:24:28,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 940. [2024-11-27 23:24:28,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 689 states have (on average 1.3410740203193032) internal successors, (924), 713 states have internal predecessors, (924), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 168 states have call predecessors, (182), 173 states have call successors, (182) [2024-11-27 23:24:28,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1280 transitions. [2024-11-27 23:24:28,700 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1280 transitions. Word has length 270 [2024-11-27 23:24:28,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:28,701 INFO L471 AbstractCegarLoop]: Abstraction has 940 states and 1280 transitions. [2024-11-27 23:24:28,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-27 23:24:28,701 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1280 transitions. [2024-11-27 23:24:28,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-27 23:24:28,709 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:28,709 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:24:28,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 23:24:28,710 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:28,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:28,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2084155594, now seen corresponding path program 1 times [2024-11-27 23:24:28,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:28,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566585213] [2024-11-27 23:24:28,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:28,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-27 23:24:30,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:30,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566585213] [2024-11-27 23:24:30,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566585213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:30,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:30,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:24:30,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874459914] [2024-11-27 23:24:30,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:30,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:24:30,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:30,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:24:30,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:24:30,303 INFO L87 Difference]: Start difference. First operand 940 states and 1280 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-27 23:24:30,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:30,388 INFO L93 Difference]: Finished difference Result 1855 states and 2532 transitions. [2024-11-27 23:24:30,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:24:30,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 270 [2024-11-27 23:24:30,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:30,405 INFO L225 Difference]: With dead ends: 1855 [2024-11-27 23:24:30,405 INFO L226 Difference]: Without dead ends: 942 [2024-11-27 23:24:30,410 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 [2024-11-27 23:24:30,411 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 1 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:30,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1712 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:24:30,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2024-11-27 23:24:30,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 941. [2024-11-27 23:24:30,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 690 states have (on average 1.3405797101449275) internal successors, (925), 714 states have internal predecessors, (925), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 168 states have call predecessors, (182), 173 states have call successors, (182) [2024-11-27 23:24:30,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1281 transitions. [2024-11-27 23:24:30,475 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1281 transitions. Word has length 270 [2024-11-27 23:24:30,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:30,476 INFO L471 AbstractCegarLoop]: Abstraction has 941 states and 1281 transitions. [2024-11-27 23:24:30,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-27 23:24:30,476 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1281 transitions. [2024-11-27 23:24:30,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-27 23:24:30,488 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:30,488 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:24:30,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:24:30,489 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:30,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:30,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1960105874, now seen corresponding path program 1 times [2024-11-27 23:24:30,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:30,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387733240] [2024-11-27 23:24:30,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:30,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-27 23:24:31,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:31,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387733240] [2024-11-27 23:24:31,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387733240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:31,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448487211] [2024-11-27 23:24:31,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:31,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:31,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:31,650 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:31,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:24:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:33,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 3194 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:24:33,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:33,970 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-27 23:24:33,970 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:33,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448487211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:33,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:24:33,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 23:24:33,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20644770] [2024-11-27 23:24:33,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:33,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:33,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:33,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:33,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:24:33,973 INFO L87 Difference]: Start difference. First operand 941 states and 1281 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 23:24:34,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:34,065 INFO L93 Difference]: Finished difference Result 1857 states and 2534 transitions. [2024-11-27 23:24:34,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:24:34,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 272 [2024-11-27 23:24:34,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:34,075 INFO L225 Difference]: With dead ends: 1857 [2024-11-27 23:24:34,075 INFO L226 Difference]: Without dead ends: 943 [2024-11-27 23:24:34,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:24:34,080 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 1 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:34,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2561 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:24:34,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2024-11-27 23:24:34,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 943. [2024-11-27 23:24:34,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 692 states have (on average 1.3395953757225434) internal successors, (927), 716 states have internal predecessors, (927), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 168 states have call predecessors, (182), 173 states have call successors, (182) [2024-11-27 23:24:34,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1283 transitions. [2024-11-27 23:24:34,128 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1283 transitions. Word has length 272 [2024-11-27 23:24:34,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:34,129 INFO L471 AbstractCegarLoop]: Abstraction has 943 states and 1283 transitions. [2024-11-27 23:24:34,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 23:24:34,129 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1283 transitions. [2024-11-27 23:24:34,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-27 23:24:34,137 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:34,138 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:24:34,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 23:24:34,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 23:24:34,339 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:34,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:34,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1451352432, now seen corresponding path program 1 times [2024-11-27 23:24:34,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:34,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549146484] [2024-11-27 23:24:34,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:34,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-27 23:24:35,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:35,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549146484] [2024-11-27 23:24:35,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549146484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:35,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436607423] [2024-11-27 23:24:35,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:35,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:35,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:35,438 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:35,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:24:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:37,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 3197 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:24:37,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:37,574 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-27 23:24:37,574 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:37,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436607423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:37,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:24:37,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 23:24:37,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058765034] [2024-11-27 23:24:37,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:37,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:37,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:37,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:37,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:24:37,577 INFO L87 Difference]: Start difference. First operand 943 states and 1283 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 23:24:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:37,681 INFO L93 Difference]: Finished difference Result 1861 states and 2538 transitions. [2024-11-27 23:24:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:24:37,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 272 [2024-11-27 23:24:37,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:37,692 INFO L225 Difference]: With dead ends: 1861 [2024-11-27 23:24:37,693 INFO L226 Difference]: Without dead ends: 945 [2024-11-27 23:24:37,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:24:37,699 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 1 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:37,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2559 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:24:37,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2024-11-27 23:24:37,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 945. [2024-11-27 23:24:37,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 694 states have (on average 1.3386167146974064) internal successors, (929), 718 states have internal predecessors, (929), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 168 states have call predecessors, (182), 173 states have call successors, (182) [2024-11-27 23:24:37,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1285 transitions. [2024-11-27 23:24:37,767 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1285 transitions. Word has length 272 [2024-11-27 23:24:37,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:37,768 INFO L471 AbstractCegarLoop]: Abstraction has 945 states and 1285 transitions. [2024-11-27 23:24:37,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 23:24:37,768 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1285 transitions. [2024-11-27 23:24:37,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-27 23:24:37,779 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:37,780 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:24:37,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 23:24:37,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 23:24:37,981 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:37,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:37,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1492229646, now seen corresponding path program 1 times [2024-11-27 23:24:37,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:37,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141137761] [2024-11-27 23:24:37,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:37,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:38,955 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-27 23:24:38,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:38,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141137761] [2024-11-27 23:24:38,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141137761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:38,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584607710] [2024-11-27 23:24:38,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:38,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:38,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:38,959 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:38,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:24:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:41,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 3200 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:24:41,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-11-27 23:24:41,052 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:24:41,566 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-27 23:24:41,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584607710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:24:41,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:24:41,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-27 23:24:41,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020719162] [2024-11-27 23:24:41,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:24:41,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:24:41,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:41,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:24:41,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:24:41,569 INFO L87 Difference]: Start difference. First operand 945 states and 1285 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-27 23:24:41,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:41,662 INFO L93 Difference]: Finished difference Result 1869 states and 2548 transitions. [2024-11-27 23:24:41,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:24:41,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 272 [2024-11-27 23:24:41,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:41,671 INFO L225 Difference]: With dead ends: 1869 [2024-11-27 23:24:41,671 INFO L226 Difference]: Without dead ends: 951 [2024-11-27 23:24:41,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:24:41,675 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 2 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3420 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:41,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3420 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:24:41,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2024-11-27 23:24:41,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 951. [2024-11-27 23:24:41,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 700 states have (on average 1.3357142857142856) internal successors, (935), 724 states have internal predecessors, (935), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 168 states have call predecessors, (182), 173 states have call successors, (182) [2024-11-27 23:24:41,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1291 transitions. [2024-11-27 23:24:41,715 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1291 transitions. Word has length 272 [2024-11-27 23:24:41,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:41,716 INFO L471 AbstractCegarLoop]: Abstraction has 951 states and 1291 transitions. [2024-11-27 23:24:41,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-27 23:24:41,716 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1291 transitions. [2024-11-27 23:24:41,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-27 23:24:41,723 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:41,724 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:24:41,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 23:24:41,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 23:24:41,924 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:41,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:41,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1765310498, now seen corresponding path program 2 times [2024-11-27 23:24:41,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:41,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058234895] [2024-11-27 23:24:41,925 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:24:41,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:42,523 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:24:42,523 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-27 23:24:42,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:42,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058234895] [2024-11-27 23:24:42,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058234895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:42,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:42,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:24:42,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443910501] [2024-11-27 23:24:42,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:42,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:42,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:42,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:42,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:24:42,862 INFO L87 Difference]: Start difference. First operand 951 states and 1291 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-27 23:24:42,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:42,971 INFO L93 Difference]: Finished difference Result 1876 states and 2553 transitions. [2024-11-27 23:24:42,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:24:42,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 278 [2024-11-27 23:24:42,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:42,982 INFO L225 Difference]: With dead ends: 1876 [2024-11-27 23:24:42,982 INFO L226 Difference]: Without dead ends: 952 [2024-11-27 23:24:42,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:24:42,987 INFO L435 NwaCegarLoop]: 861 mSDtfsCounter, 18 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2565 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:42,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2565 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:24:42,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2024-11-27 23:24:43,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 951. [2024-11-27 23:24:43,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 700 states have (on average 1.332857142857143) internal successors, (933), 724 states have internal predecessors, (933), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 168 states have call predecessors, (182), 173 states have call successors, (182) [2024-11-27 23:24:43,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1289 transitions. [2024-11-27 23:24:43,047 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1289 transitions. Word has length 278 [2024-11-27 23:24:43,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:43,048 INFO L471 AbstractCegarLoop]: Abstraction has 951 states and 1289 transitions. [2024-11-27 23:24:43,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-27 23:24:43,048 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1289 transitions. [2024-11-27 23:24:43,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-27 23:24:43,059 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:43,059 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:24:43,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 23:24:43,060 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:43,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:43,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1695461377, now seen corresponding path program 1 times [2024-11-27 23:24:43,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:43,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841078122] [2024-11-27 23:24:43,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:43,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-27 23:24:44,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:44,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841078122] [2024-11-27 23:24:44,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841078122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:44,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948983184] [2024-11-27 23:24:44,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:44,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:44,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:44,559 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:44,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:24:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:46,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 3251 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:24:46,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:46,723 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 64 proven. 16 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-11-27 23:24:46,723 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:24:47,283 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-27 23:24:47,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948983184] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:24:47,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:24:47,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-27 23:24:47,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178129588] [2024-11-27 23:24:47,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:24:47,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 23:24:47,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:47,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 23:24:47,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:24:47,286 INFO L87 Difference]: Start difference. First operand 951 states and 1289 transitions. Second operand has 13 states, 13 states have (on average 14.461538461538462) internal successors, (188), 13 states have internal predecessors, (188), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-27 23:24:47,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:47,460 INFO L93 Difference]: Finished difference Result 1887 states and 2565 transitions. [2024-11-27 23:24:47,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:24:47,461 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.461538461538462) internal successors, (188), 13 states have internal predecessors, (188), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 280 [2024-11-27 23:24:47,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:47,469 INFO L225 Difference]: With dead ends: 1887 [2024-11-27 23:24:47,469 INFO L226 Difference]: Without dead ends: 963 [2024-11-27 23:24:47,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:24:47,474 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 2 mSDsluCounter, 4260 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5116 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:47,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5116 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:24:47,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2024-11-27 23:24:47,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2024-11-27 23:24:47,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 712 states have (on average 1.327247191011236) internal successors, (945), 736 states have internal predecessors, (945), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 168 states have call predecessors, (182), 173 states have call successors, (182) [2024-11-27 23:24:47,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1301 transitions. [2024-11-27 23:24:47,524 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1301 transitions. Word has length 280 [2024-11-27 23:24:47,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:47,526 INFO L471 AbstractCegarLoop]: Abstraction has 963 states and 1301 transitions. [2024-11-27 23:24:47,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.461538461538462) internal successors, (188), 13 states have internal predecessors, (188), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-27 23:24:47,527 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1301 transitions. [2024-11-27 23:24:47,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-11-27 23:24:47,534 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:47,534 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:24:47,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 23:24:47,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 23:24:47,736 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:47,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:47,737 INFO L85 PathProgramCache]: Analyzing trace with hash 616133337, now seen corresponding path program 2 times [2024-11-27 23:24:47,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:47,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301159290] [2024-11-27 23:24:47,737 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:24:47,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:48,593 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:24:48,593 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:48,955 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2024-11-27 23:24:48,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:48,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301159290] [2024-11-27 23:24:48,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301159290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:48,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:48,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:24:48,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274559046] [2024-11-27 23:24:48,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:48,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:24:48,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:48,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:24:48,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:24:48,958 INFO L87 Difference]: Start difference. First operand 963 states and 1301 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 23:24:49,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:49,135 INFO L93 Difference]: Finished difference Result 1905 states and 2589 transitions. [2024-11-27 23:24:49,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:24:49,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 292 [2024-11-27 23:24:49,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:49,144 INFO L225 Difference]: With dead ends: 1905 [2024-11-27 23:24:49,144 INFO L226 Difference]: Without dead ends: 969 [2024-11-27 23:24:49,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:24:49,148 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 0 mSDsluCounter, 2567 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3426 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:49,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3426 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:24:49,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2024-11-27 23:24:49,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 967. [2024-11-27 23:24:49,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 715 states have (on average 1.3258741258741258) internal successors, (948), 739 states have internal predecessors, (948), 174 states have call successors, (174), 77 states have call predecessors, (174), 76 states have return successors, (184), 169 states have call predecessors, (184), 173 states have call successors, (184) [2024-11-27 23:24:49,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1306 transitions. [2024-11-27 23:24:49,192 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1306 transitions. Word has length 292 [2024-11-27 23:24:49,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:49,193 INFO L471 AbstractCegarLoop]: Abstraction has 967 states and 1306 transitions. [2024-11-27 23:24:49,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 23:24:49,193 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1306 transitions. [2024-11-27 23:24:49,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-11-27 23:24:49,200 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:49,200 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:24:49,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 23:24:49,200 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:49,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:49,201 INFO L85 PathProgramCache]: Analyzing trace with hash -328941247, now seen corresponding path program 1 times [2024-11-27 23:24:49,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:49,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127751849] [2024-11-27 23:24:49,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:49,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:51,118 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 3 proven. 100 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-27 23:24:51,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:51,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127751849] [2024-11-27 23:24:51,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127751849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:51,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369991627] [2024-11-27 23:24:51,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:51,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:51,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:51,121 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:51,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:24:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:53,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 3379 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 23:24:53,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 64 proven. 100 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-11-27 23:24:53,578 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:24:54,337 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 3 proven. 100 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-27 23:24:54,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369991627] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:24:54,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:24:54,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-27 23:24:54,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856853641] [2024-11-27 23:24:54,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:24:54,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-27 23:24:54,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:54,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-27 23:24:54,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-27 23:24:54,339 INFO L87 Difference]: Start difference. First operand 967 states and 1306 transitions. Second operand has 25 states, 25 states have (on average 8.64) internal successors, (216), 25 states have internal predecessors, (216), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:24:54,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:54,556 INFO L93 Difference]: Finished difference Result 1931 states and 2617 transitions. [2024-11-27 23:24:54,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 23:24:54,557 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.64) internal successors, (216), 25 states have internal predecessors, (216), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 292 [2024-11-27 23:24:54,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:54,564 INFO L225 Difference]: With dead ends: 1931 [2024-11-27 23:24:54,564 INFO L226 Difference]: Without dead ends: 991 [2024-11-27 23:24:54,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-27 23:24:54,568 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 2 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3412 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:54,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3412 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:24:54,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2024-11-27 23:24:54,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2024-11-27 23:24:54,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 739 states have (on average 1.3152909336941814) internal successors, (972), 763 states have internal predecessors, (972), 174 states have call successors, (174), 77 states have call predecessors, (174), 76 states have return successors, (184), 169 states have call predecessors, (184), 173 states have call successors, (184) [2024-11-27 23:24:54,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1330 transitions. [2024-11-27 23:24:54,647 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1330 transitions. Word has length 292 [2024-11-27 23:24:54,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:54,647 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1330 transitions. [2024-11-27 23:24:54,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.64) internal successors, (216), 25 states have internal predecessors, (216), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:24:54,648 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1330 transitions. [2024-11-27 23:24:54,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-11-27 23:24:54,653 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:54,653 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:24:54,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 23:24:54,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:54,855 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:54,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:54,856 INFO L85 PathProgramCache]: Analyzing trace with hash 453140209, now seen corresponding path program 2 times [2024-11-27 23:24:54,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:54,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953924605] [2024-11-27 23:24:54,856 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:24:54,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:55,685 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:24:55,685 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2024-11-27 23:24:55,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:55,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953924605] [2024-11-27 23:24:55,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953924605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:55,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:55,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:24:55,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921590659] [2024-11-27 23:24:55,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:55,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:55,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:55,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:55,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:24:55,962 INFO L87 Difference]: Start difference. First operand 991 states and 1330 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-27 23:24:56,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:56,058 INFO L93 Difference]: Finished difference Result 1964 states and 2690 transitions. [2024-11-27 23:24:56,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:24:56,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 316 [2024-11-27 23:24:56,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:56,067 INFO L225 Difference]: With dead ends: 1964 [2024-11-27 23:24:56,067 INFO L226 Difference]: Without dead ends: 1000 [2024-11-27 23:24:56,071 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:24:56,072 INFO L435 NwaCegarLoop]: 854 mSDtfsCounter, 4 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:56,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2554 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:24:56,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2024-11-27 23:24:56,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 999. [2024-11-27 23:24:56,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 745 states have (on average 1.316778523489933) internal successors, (981), 770 states have internal predecessors, (981), 174 states have call successors, (174), 78 states have call predecessors, (174), 78 states have return successors, (188), 169 states have call predecessors, (188), 173 states have call successors, (188) [2024-11-27 23:24:56,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1343 transitions. [2024-11-27 23:24:56,113 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1343 transitions. Word has length 316 [2024-11-27 23:24:56,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:56,113 INFO L471 AbstractCegarLoop]: Abstraction has 999 states and 1343 transitions. [2024-11-27 23:24:56,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-27 23:24:56,114 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1343 transitions. [2024-11-27 23:24:56,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-27 23:24:56,118 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:56,118 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:24:56,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 23:24:56,118 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:24:56,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:56,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1180595799, now seen corresponding path program 1 times [2024-11-27 23:24:56,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:56,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818617622] [2024-11-27 23:24:56,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:56,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 3 proven. 484 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-27 23:24:59,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:59,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818617622] [2024-11-27 23:24:59,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818617622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:59,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684105583] [2024-11-27 23:24:59,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:59,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:59,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:59,614 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:59,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 23:25:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:02,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 3613 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-27 23:25:02,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:02,325 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 68 proven. 484 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-27 23:25:02,325 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:25:03,617 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 3 proven. 484 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-27 23:25:03,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684105583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:25:03,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:25:03,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 33 [2024-11-27 23:25:03,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293748012] [2024-11-27 23:25:03,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:25:03,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-27 23:25:03,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:03,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-27 23:25:03,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 23:25:03,621 INFO L87 Difference]: Start difference. First operand 999 states and 1343 transitions. Second operand has 33 states, 33 states have (on average 7.151515151515151) internal successors, (236), 33 states have internal predecessors, (236), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:25:03,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:03,957 INFO L93 Difference]: Finished difference Result 1987 states and 2679 transitions. [2024-11-27 23:25:03,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-27 23:25:03,958 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 7.151515151515151) internal successors, (236), 33 states have internal predecessors, (236), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 318 [2024-11-27 23:25:03,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:03,969 INFO L225 Difference]: With dead ends: 1987 [2024-11-27 23:25:03,969 INFO L226 Difference]: Without dead ends: 1015 [2024-11-27 23:25:03,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 612 SyntacticMatches, 16 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 23:25:03,975 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 1 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4264 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:03,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4264 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:25:03,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2024-11-27 23:25:04,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 1015. [2024-11-27 23:25:04,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 761 states have (on average 1.3101182654402102) internal successors, (997), 786 states have internal predecessors, (997), 174 states have call successors, (174), 78 states have call predecessors, (174), 78 states have return successors, (188), 169 states have call predecessors, (188), 173 states have call successors, (188) [2024-11-27 23:25:04,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1359 transitions. [2024-11-27 23:25:04,022 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1359 transitions. Word has length 318 [2024-11-27 23:25:04,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:04,023 INFO L471 AbstractCegarLoop]: Abstraction has 1015 states and 1359 transitions. [2024-11-27 23:25:04,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.151515151515151) internal successors, (236), 33 states have internal predecessors, (236), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:25:04,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1359 transitions. [2024-11-27 23:25:04,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-11-27 23:25:04,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:04,030 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:25:04,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 23:25:04,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:04,231 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:25:04,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:04,232 INFO L85 PathProgramCache]: Analyzing trace with hash 600927369, now seen corresponding path program 2 times [2024-11-27 23:25:04,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:04,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794903141] [2024-11-27 23:25:04,233 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:25:04,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:05,253 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:25:05,253 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:25:05,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 1042 trivial. 0 not checked. [2024-11-27 23:25:05,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:05,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794903141] [2024-11-27 23:25:05,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794903141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:05,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:05,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:25:05,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39356326] [2024-11-27 23:25:05,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:05,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:25:05,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:05,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:25:05,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:25:05,878 INFO L87 Difference]: Start difference. First operand 1015 states and 1359 transitions. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 7 states have internal predecessors, (150), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) [2024-11-27 23:25:06,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:06,341 INFO L93 Difference]: Finished difference Result 2057 states and 2773 transitions. [2024-11-27 23:25:06,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:25:06,341 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 7 states have internal predecessors, (150), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) Word has length 334 [2024-11-27 23:25:06,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:06,351 INFO L225 Difference]: With dead ends: 2057 [2024-11-27 23:25:06,351 INFO L226 Difference]: Without dead ends: 1069 [2024-11-27 23:25:06,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:25:06,356 INFO L435 NwaCegarLoop]: 851 mSDtfsCounter, 11 mSDsluCounter, 5946 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 6797 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:06,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 6797 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:25:06,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2024-11-27 23:25:06,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1031. [2024-11-27 23:25:06,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 775 states have (on average 1.3096774193548386) internal successors, (1015), 800 states have internal predecessors, (1015), 175 states have call successors, (175), 78 states have call predecessors, (175), 79 states have return successors, (192), 171 states have call predecessors, (192), 174 states have call successors, (192) [2024-11-27 23:25:06,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1382 transitions. [2024-11-27 23:25:06,404 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1382 transitions. Word has length 334 [2024-11-27 23:25:06,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:06,405 INFO L471 AbstractCegarLoop]: Abstraction has 1031 states and 1382 transitions. [2024-11-27 23:25:06,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 7 states have internal predecessors, (150), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) [2024-11-27 23:25:06,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1382 transitions. [2024-11-27 23:25:06,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-27 23:25:06,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:06,412 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:25:06,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 23:25:06,412 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:25:06,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:06,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2144425175, now seen corresponding path program 1 times [2024-11-27 23:25:06,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:06,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617601326] [2024-11-27 23:25:06,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:06,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1206 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1194 trivial. 0 not checked. [2024-11-27 23:25:08,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:08,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617601326] [2024-11-27 23:25:08,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617601326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:08,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117980776] [2024-11-27 23:25:08,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:08,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:08,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:08,906 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:08,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 23:25:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:11,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 3883 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 23:25:11,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:12,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1206 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2024-11-27 23:25:12,094 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:12,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117980776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:12,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:12,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-27 23:25:12,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329877904] [2024-11-27 23:25:12,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:12,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:25:12,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:12,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:25:12,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:25:12,097 INFO L87 Difference]: Start difference. First operand 1031 states and 1382 transitions. Second operand has 6 states, 5 states have (on average 30.4) internal successors, (152), 6 states have internal predecessors, (152), 5 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) [2024-11-27 23:25:12,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:12,908 INFO L93 Difference]: Finished difference Result 2083 states and 2807 transitions. [2024-11-27 23:25:12,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:25:12,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.4) internal successors, (152), 6 states have internal predecessors, (152), 5 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) Word has length 374 [2024-11-27 23:25:12,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:12,918 INFO L225 Difference]: With dead ends: 2083 [2024-11-27 23:25:12,919 INFO L226 Difference]: Without dead ends: 1059 [2024-11-27 23:25:12,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:25:12,925 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 16 mSDsluCounter, 3374 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4227 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:12,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4227 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:25:12,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2024-11-27 23:25:12,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1038. [2024-11-27 23:25:12,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 781 states have (on average 1.3085787451984634) internal successors, (1022), 807 states have internal predecessors, (1022), 175 states have call successors, (175), 78 states have call predecessors, (175), 80 states have return successors, (193), 171 states have call predecessors, (193), 174 states have call successors, (193) [2024-11-27 23:25:12,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1390 transitions. [2024-11-27 23:25:12,980 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1390 transitions. Word has length 374 [2024-11-27 23:25:12,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:12,980 INFO L471 AbstractCegarLoop]: Abstraction has 1038 states and 1390 transitions. [2024-11-27 23:25:12,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.4) internal successors, (152), 6 states have internal predecessors, (152), 5 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) [2024-11-27 23:25:12,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1390 transitions. [2024-11-27 23:25:12,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-11-27 23:25:12,989 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:12,990 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:25:13,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 23:25:13,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-27 23:25:13,190 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:25:13,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:13,191 INFO L85 PathProgramCache]: Analyzing trace with hash -2054410007, now seen corresponding path program 1 times [2024-11-27 23:25:13,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:13,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618651157] [2024-11-27 23:25:13,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:13,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1196 trivial. 0 not checked. [2024-11-27 23:25:15,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:15,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618651157] [2024-11-27 23:25:15,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618651157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:15,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261397641] [2024-11-27 23:25:15,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:15,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:15,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:15,416 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:15,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 23:25:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:19,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 3961 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-27 23:25:19,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:19,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 1123 trivial. 0 not checked. [2024-11-27 23:25:19,548 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:19,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261397641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:19,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:19,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 10 [2024-11-27 23:25:19,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833667632] [2024-11-27 23:25:19,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:19,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:25:19,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:19,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:25:19,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:25:19,551 INFO L87 Difference]: Start difference. First operand 1038 states and 1390 transitions. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-27 23:25:19,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:19,667 INFO L93 Difference]: Finished difference Result 2061 states and 2764 transitions. [2024-11-27 23:25:19,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:25:19,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) Word has length 378 [2024-11-27 23:25:19,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:19,677 INFO L225 Difference]: With dead ends: 2061 [2024-11-27 23:25:19,678 INFO L226 Difference]: Without dead ends: 1050 [2024-11-27 23:25:19,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:25:19,682 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 0 mSDsluCounter, 4263 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5118 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:19,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5118 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:19,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2024-11-27 23:25:19,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1043. [2024-11-27 23:25:19,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 785 states have (on average 1.3070063694267515) internal successors, (1026), 810 states have internal predecessors, (1026), 175 states have call successors, (175), 78 states have call predecessors, (175), 81 states have return successors, (195), 173 states have call predecessors, (195), 174 states have call successors, (195) [2024-11-27 23:25:19,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1396 transitions. [2024-11-27 23:25:19,729 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1396 transitions. Word has length 378 [2024-11-27 23:25:19,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:19,729 INFO L471 AbstractCegarLoop]: Abstraction has 1043 states and 1396 transitions. [2024-11-27 23:25:19,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-27 23:25:19,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1396 transitions. [2024-11-27 23:25:19,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-11-27 23:25:19,736 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:19,737 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 23:25:19,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 23:25:19,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-27 23:25:19,937 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-11-27 23:25:19,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:19,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1990717552, now seen corresponding path program 2 times [2024-11-27 23:25:19,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:19,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714936949] [2024-11-27 23:25:19,938 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:25:19,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:20,994 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:25:20,994 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:25:22,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1304 trivial. 0 not checked. [2024-11-27 23:25:22,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:22,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714936949] [2024-11-27 23:25:22,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714936949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:22,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421946512] [2024-11-27 23:25:22,284 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:25:22,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:22,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:22,286 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:22,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7635672-970f-4e18-8863-c2710f1d1b5f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process