./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash be936ec9376452d086f72aa92ac4fe7deb233a068e40e0ed8f478fbc228d19b6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:47:07,199 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:47:07,319 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 23:47:07,330 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:47:07,331 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:47:07,374 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:47:07,375 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:47:07,375 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:47:07,376 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:47:07,376 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:47:07,376 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:47:07,376 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:47:07,377 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:47:07,377 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:47:07,377 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:47:07,377 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:47:07,377 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:47:07,378 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:47:07,378 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:47:07,378 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:47:07,378 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:47:07,378 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:47:07,379 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:47:07,379 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:47:07,379 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:47:07,379 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:47:07,379 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:47:07,379 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:47:07,380 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:47:07,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:47:07,380 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:47:07,380 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:47:07,380 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:47:07,380 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:47:07,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:47:07,381 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:47:07,381 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:47:07,381 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:47:07,381 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:47:07,381 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:47:07,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:47:07,382 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:47:07,382 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:47:07,382 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:47:07,382 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:47:07,382 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_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be936ec9376452d086f72aa92ac4fe7deb233a068e40e0ed8f478fbc228d19b6 [2024-11-23 23:47:07,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:47:07,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:47:07,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:47:07,804 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:47:07,804 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:47:07,806 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2024-11-23 23:47:11,189 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/data/08a7954e4/3d61a84ee46441ee9a8732ec5bd43ad6/FLAG9418b1a7b [2024-11-23 23:47:12,055 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:47:12,056 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2024-11-23 23:47:12,096 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/data/08a7954e4/3d61a84ee46441ee9a8732ec5bd43ad6/FLAG9418b1a7b [2024-11-23 23:47:12,116 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/data/08a7954e4/3d61a84ee46441ee9a8732ec5bd43ad6 [2024-11-23 23:47:12,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:47:12,120 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:47:12,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:47:12,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:47:12,128 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:47:12,129 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:47:12" (1/1) ... [2024-11-23 23:47:12,130 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@712ca220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:47:12, skipping insertion in model container [2024-11-23 23:47:12,130 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:47:12" (1/1) ... [2024-11-23 23:47:12,263 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:47:13,379 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_8627f2b4-4f75-43f1-ab9d-4d88864272f1/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i[164250,164263] [2024-11-23 23:47:13,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:47:13,921 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:47:14,138 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; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5441] [2024-11-23 23:47:14,140 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; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [5448] [2024-11-23 23:47:14,141 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; btr %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5456-5457] [2024-11-23 23:47:14,146 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; incl %0": "+m" (v->counter)); [5485] [2024-11-23 23:47:14,148 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; decl %0": "+m" (v->counter)); [5492] [2024-11-23 23:47:14,168 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_8627f2b4-4f75-43f1-ab9d-4d88864272f1/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i[164250,164263] [2024-11-23 23:47:14,233 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers--X--defaultlinux-3.12-rc1.tar.xz--X--144_2a--X--cpachecker/linux-3.12-rc1.tar.xz/csd_deg_dscv/6225/dscv_tempdir/dscv/ri/144_2a/drivers/net/can/usb/ems_usb.o.c.prepared"), "i" (546), "i" (12UL)); [6159-6160] [2024-11-23 23:47:14,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:47:14,488 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:47:14,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:47:14 WrapperNode [2024-11-23 23:47:14,490 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:47:14,492 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:47:14,492 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:47:14,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:47:14,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:47:14" (1/1) ... [2024-11-23 23:47:14,575 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:47:14" (1/1) ... [2024-11-23 23:47:14,749 INFO L138 Inliner]: procedures = 168, calls = 765, calls flagged for inlining = 78, calls inlined = 78, statements flattened = 2252 [2024-11-23 23:47:14,750 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:47:14,751 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:47:14,751 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:47:14,751 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:47:14,764 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:47:14" (1/1) ... [2024-11-23 23:47:14,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:47:14" (1/1) ... [2024-11-23 23:47:14,801 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:47:14" (1/1) ... [2024-11-23 23:47:15,190 INFO L175 MemorySlicer]: Split 454 memory accesses to 8 slices as follows [342, 2, 9, 44, 9, 20, 20, 8]. 75 percent of accesses are in the largest equivalence class. The 44 initializations are split as follows [34, 2, 0, 0, 0, 0, 0, 8]. The 224 writes are split as follows [164, 0, 0, 44, 5, 11, 0, 0]. [2024-11-23 23:47:15,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:47:14" (1/1) ... [2024-11-23 23:47:15,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:47:14" (1/1) ... [2024-11-23 23:47:15,309 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:47:14" (1/1) ... [2024-11-23 23:47:15,313 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:47:14" (1/1) ... [2024-11-23 23:47:15,342 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:47:14" (1/1) ... [2024-11-23 23:47:15,376 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:47:14" (1/1) ... [2024-11-23 23:47:15,391 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:47:14" (1/1) ... [2024-11-23 23:47:15,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:47:15,428 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:47:15,429 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:47:15,429 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:47:15,430 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:47:14" (1/1) ... [2024-11-23 23:47:15,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:47:15,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:47:15,471 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:47:15,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:47:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2024-11-23 23:47:15,507 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2024-11-23 23:47:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-23 23:47:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-23 23:47:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-23 23:47:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-23 23:47:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-23 23:47:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-23 23:47:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-23 23:47:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-23 23:47:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_18 [2024-11-23 23:47:15,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_18 [2024-11-23 23:47:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2024-11-23 23:47:15,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2024-11-23 23:47:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2024-11-23 23:47:15,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2024-11-23 23:47:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2024-11-23 23:47:15,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2024-11-23 23:47:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2024-11-23 23:47:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2024-11-23 23:47:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2024-11-23 23:47:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2024-11-23 23:47:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2024-11-23 23:47:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2024-11-23 23:47:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2024-11-23 23:47:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#7 [2024-11-23 23:47:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-23 23:47:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-23 23:47:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-23 23:47:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-23 23:47:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-23 23:47:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-23 23:47:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-23 23:47:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-23 23:47:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-23 23:47:15,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-23 23:47:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:47:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:47:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 23:47:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 23:47:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 23:47:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-23 23:47:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-23 23:47:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-23 23:47:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2024-11-23 23:47:15,517 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2024-11-23 23:47:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_read_bulk_callback [2024-11-23 23:47:15,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_read_bulk_callback [2024-11-23 23:47:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2024-11-23 23:47:15,517 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2024-11-23 23:47:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2024-11-23 23:47:15,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2024-11-23 23:47:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_control_cmd [2024-11-23 23:47:15,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_control_cmd [2024-11-23 23:47:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2024-11-23 23:47:15,518 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2024-11-23 23:47:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2024-11-23 23:47:15,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2024-11-23 23:47:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-23 23:47:15,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-23 23:47:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2024-11-23 23:47:15,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2024-11-23 23:47:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2024-11-23 23:47:15,518 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2024-11-23 23:47:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2024-11-23 23:47:15,518 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2024-11-23 23:47:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-23 23:47:15,518 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-23 23:47:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2024-11-23 23:47:15,519 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2024-11-23 23:47:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:47:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:47:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 23:47:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 23:47:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 23:47:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 23:47:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-23 23:47:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-23 23:47:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-23 23:47:15,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-23 23:47:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-23 23:47:15,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-23 23:47:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:47:15,520 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:47:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2024-11-23 23:47:15,523 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2024-11-23 23:47:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_command_msg [2024-11-23 23:47:15,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_command_msg [2024-11-23 23:47:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 23:47:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2024-11-23 23:47:15,524 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2024-11-23 23:47:15,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2024-11-23 23:47:15,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2024-11-23 23:47:15,524 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2024-11-23 23:47:15,524 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2024-11-23 23:47:15,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:47:15,524 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2024-11-23 23:47:15,524 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2024-11-23 23:47:15,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2024-11-23 23:47:15,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2024-11-23 23:47:15,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 23:47:15,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 23:47:15,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 23:47:15,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 23:47:15,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-23 23:47:15,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-23 23:47:15,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-23 23:47:15,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-23 23:47:15,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-23 23:47:15,528 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_write_mode [2024-11-23 23:47:15,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_write_mode [2024-11-23 23:47:15,528 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-23 23:47:15,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-23 23:47:15,528 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2024-11-23 23:47:15,529 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2024-11-23 23:47:15,529 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2024-11-23 23:47:15,529 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2024-11-23 23:47:15,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 23:47:15,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 23:47:15,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-23 23:47:15,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-23 23:47:15,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-23 23:47:15,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-23 23:47:15,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-23 23:47:15,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-23 23:47:15,529 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_disconnect [2024-11-23 23:47:15,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_disconnect [2024-11-23 23:47:15,529 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2024-11-23 23:47:15,530 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2024-11-23 23:47:15,530 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2024-11-23 23:47:15,530 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2024-11-23 23:47:15,530 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_read_interrupt_callback [2024-11-23 23:47:15,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_read_interrupt_callback [2024-11-23 23:47:15,530 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2024-11-23 23:47:15,530 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2024-11-23 23:47:15,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:47:15,530 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2024-11-23 23:47:15,530 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2024-11-23 23:47:15,530 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_rx_err [2024-11-23 23:47:15,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_rx_err [2024-11-23 23:47:15,530 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2024-11-23 23:47:15,530 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2024-11-23 23:47:15,530 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2024-11-23 23:47:15,530 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2024-11-23 23:47:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2024-11-23 23:47:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2024-11-23 23:47:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2024-11-23 23:47:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2024-11-23 23:47:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2024-11-23 23:47:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2024-11-23 23:47:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2024-11-23 23:47:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2024-11-23 23:47:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2024-11-23 23:47:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2024-11-23 23:47:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2024-11-23 23:47:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2024-11-23 23:47:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2024-11-23 23:47:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2024-11-23 23:47:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2024-11-23 23:47:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2024-11-23 23:47:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:47:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:47:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:47:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 23:47:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 23:47:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 23:47:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 23:47:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 23:47:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2024-11-23 23:47:15,532 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2024-11-23 23:47:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2024-11-23 23:47:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2024-11-23 23:47:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2024-11-23 23:47:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2024-11-23 23:47:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2024-11-23 23:47:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2024-11-23 23:47:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2024-11-23 23:47:15,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#7 [2024-11-23 23:47:15,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-23 23:47:15,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-23 23:47:15,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:47:15,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:47:16,209 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:47:16,212 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:47:16,329 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-23 23:47:17,101 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2024-11-23 23:47:24,016 INFO L? ?]: Removed 977 outVars from TransFormulas that were not future-live. [2024-11-23 23:47:24,016 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:47:24,044 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:47:24,044 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 23:47:24,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:47:24 BoogieIcfgContainer [2024-11-23 23:47:24,045 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:47:24,047 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:47:24,047 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:47:24,057 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:47:24,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:47:12" (1/3) ... [2024-11-23 23:47:24,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47442ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:47:24, skipping insertion in model container [2024-11-23 23:47:24,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:47:14" (2/3) ... [2024-11-23 23:47:24,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47442ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:47:24, skipping insertion in model container [2024-11-23 23:47:24,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:47:24" (3/3) ... [2024-11-23 23:47:24,060 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2024-11-23 23:47:24,081 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:47:24,084 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i that has 53 procedures, 784 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-23 23:47:24,159 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:47:24,172 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;@776d8755, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:47:24,172 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:47:24,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 782 states, 573 states have (on average 1.343804537521815) internal successors, (770), 599 states have internal predecessors, (770), 157 states have call successors, (157), 52 states have call predecessors, (157), 50 states have return successors, (151), 146 states have call predecessors, (151), 151 states have call successors, (151) [2024-11-23 23:47:24,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-23 23:47:24,188 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:24,189 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:47:24,189 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:24,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:24,195 INFO L85 PathProgramCache]: Analyzing trace with hash 977399577, now seen corresponding path program 1 times [2024-11-23 23:47:24,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:24,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155139074] [2024-11-23 23:47:24,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:24,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 23:47:27,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:27,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155139074] [2024-11-23 23:47:27,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155139074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:27,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:47:27,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:47:27,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201910371] [2024-11-23 23:47:27,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:27,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:47:27,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:27,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:47:27,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:47:27,539 INFO L87 Difference]: Start difference. First operand has 782 states, 573 states have (on average 1.343804537521815) internal successors, (770), 599 states have internal predecessors, (770), 157 states have call successors, (157), 52 states have call predecessors, (157), 50 states have return successors, (151), 146 states have call predecessors, (151), 151 states have call successors, (151) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 23:47:31,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:47:31,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:31,899 INFO L93 Difference]: Finished difference Result 2302 states and 3241 transitions. [2024-11-23 23:47:31,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:47:31,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2024-11-23 23:47:31,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:31,939 INFO L225 Difference]: With dead ends: 2302 [2024-11-23 23:47:31,939 INFO L226 Difference]: Without dead ends: 1501 [2024-11-23 23:47:31,947 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:47:31,950 INFO L435 NwaCegarLoop]: 1064 mSDtfsCounter, 1010 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:31,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 2101 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-11-23 23:47:31,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2024-11-23 23:47:32,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1501. [2024-11-23 23:47:32,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 1109 states have (on average 1.3047790802524797) internal successors, (1447), 1141 states have internal predecessors, (1447), 293 states have call successors, (293), 99 states have call predecessors, (293), 98 states have return successors, (288), 278 states have call predecessors, (288), 288 states have call successors, (288) [2024-11-23 23:47:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 2028 transitions. [2024-11-23 23:47:32,185 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 2028 transitions. Word has length 28 [2024-11-23 23:47:32,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:32,185 INFO L471 AbstractCegarLoop]: Abstraction has 1501 states and 2028 transitions. [2024-11-23 23:47:32,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 23:47:32,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 2028 transitions. [2024-11-23 23:47:32,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-23 23:47:32,190 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:32,191 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:47:32,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:47:32,191 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:32,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:32,192 INFO L85 PathProgramCache]: Analyzing trace with hash -74758215, now seen corresponding path program 1 times [2024-11-23 23:47:32,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:32,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454140273] [2024-11-23 23:47:32,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:32,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:47:34,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:34,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454140273] [2024-11-23 23:47:34,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454140273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:34,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:47:34,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:47:34,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248564815] [2024-11-23 23:47:34,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:34,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:47:34,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:34,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:47:34,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:47:34,952 INFO L87 Difference]: Start difference. First operand 1501 states and 2028 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:47:35,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:35,363 INFO L93 Difference]: Finished difference Result 4488 states and 6169 transitions. [2024-11-23 23:47:35,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:47:35,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2024-11-23 23:47:35,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:35,437 INFO L225 Difference]: With dead ends: 4488 [2024-11-23 23:47:35,438 INFO L226 Difference]: Without dead ends: 2994 [2024-11-23 23:47:35,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:47:35,444 INFO L435 NwaCegarLoop]: 1571 mSDtfsCounter, 1024 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:35,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 2584 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:47:35,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2024-11-23 23:47:35,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2984. [2024-11-23 23:47:35,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2984 states, 2208 states have (on average 1.3034420289855073) internal successors, (2878), 2268 states have internal predecessors, (2878), 579 states have call successors, (579), 197 states have call predecessors, (579), 196 states have return successors, (618), 554 states have call predecessors, (618), 574 states have call successors, (618) [2024-11-23 23:47:35,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2984 states to 2984 states and 4075 transitions. [2024-11-23 23:47:35,678 INFO L78 Accepts]: Start accepts. Automaton has 2984 states and 4075 transitions. Word has length 38 [2024-11-23 23:47:35,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:35,678 INFO L471 AbstractCegarLoop]: Abstraction has 2984 states and 4075 transitions. [2024-11-23 23:47:35,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:47:35,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2984 states and 4075 transitions. [2024-11-23 23:47:35,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-23 23:47:35,681 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:35,681 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:47:35,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:47:35,685 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:35,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:35,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1977134535, now seen corresponding path program 1 times [2024-11-23 23:47:35,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:35,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950187851] [2024-11-23 23:47:35,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:35,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:38,520 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:47:38,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:38,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950187851] [2024-11-23 23:47:38,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950187851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:38,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:47:38,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:47:38,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465755505] [2024-11-23 23:47:38,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:38,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:47:38,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:38,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:47:38,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:47:38,524 INFO L87 Difference]: Start difference. First operand 2984 states and 4075 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:47:38,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:38,657 INFO L93 Difference]: Finished difference Result 2986 states and 4076 transitions. [2024-11-23 23:47:38,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:47:38,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2024-11-23 23:47:38,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:38,683 INFO L225 Difference]: With dead ends: 2986 [2024-11-23 23:47:38,683 INFO L226 Difference]: Without dead ends: 2983 [2024-11-23 23:47:38,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:47:38,688 INFO L435 NwaCegarLoop]: 1033 mSDtfsCounter, 1010 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:38,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 1033 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:47:38,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2024-11-23 23:47:38,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 2983. [2024-11-23 23:47:38,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2983 states, 2208 states have (on average 1.3029891304347827) internal successors, (2877), 2267 states have internal predecessors, (2877), 578 states have call successors, (578), 197 states have call predecessors, (578), 196 states have return successors, (618), 554 states have call predecessors, (618), 574 states have call successors, (618) [2024-11-23 23:47:38,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2983 states to 2983 states and 4073 transitions. [2024-11-23 23:47:38,947 INFO L78 Accepts]: Start accepts. Automaton has 2983 states and 4073 transitions. Word has length 39 [2024-11-23 23:47:38,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:38,947 INFO L471 AbstractCegarLoop]: Abstraction has 2983 states and 4073 transitions. [2024-11-23 23:47:38,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:47:38,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2983 states and 4073 transitions. [2024-11-23 23:47:38,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-23 23:47:38,953 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:38,953 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:47:38,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:47:38,954 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:38,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:38,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1161305212, now seen corresponding path program 1 times [2024-11-23 23:47:38,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:38,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189870926] [2024-11-23 23:47:38,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:38,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:47:40,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:40,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189870926] [2024-11-23 23:47:40,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189870926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:40,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:47:40,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:47:40,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852917776] [2024-11-23 23:47:40,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:40,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:47:40,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:40,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:47:40,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:47:40,556 INFO L87 Difference]: Start difference. First operand 2983 states and 4073 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:47:40,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:40,698 INFO L93 Difference]: Finished difference Result 2985 states and 4074 transitions. [2024-11-23 23:47:40,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:47:40,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2024-11-23 23:47:40,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:40,718 INFO L225 Difference]: With dead ends: 2985 [2024-11-23 23:47:40,718 INFO L226 Difference]: Without dead ends: 2982 [2024-11-23 23:47:40,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:47:40,722 INFO L435 NwaCegarLoop]: 1031 mSDtfsCounter, 1007 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:40,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 1031 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:47:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2024-11-23 23:47:40,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 2982. [2024-11-23 23:47:40,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2208 states have (on average 1.3025362318840579) internal successors, (2876), 2266 states have internal predecessors, (2876), 577 states have call successors, (577), 197 states have call predecessors, (577), 196 states have return successors, (618), 554 states have call predecessors, (618), 574 states have call successors, (618) [2024-11-23 23:47:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 4071 transitions. [2024-11-23 23:47:40,921 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 4071 transitions. Word has length 40 [2024-11-23 23:47:40,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:40,922 INFO L471 AbstractCegarLoop]: Abstraction has 2982 states and 4071 transitions. [2024-11-23 23:47:40,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:47:40,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 4071 transitions. [2024-11-23 23:47:40,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-23 23:47:40,923 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:40,924 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:47:40,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:47:40,926 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:40,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:40,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1640404842, now seen corresponding path program 1 times [2024-11-23 23:47:40,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:40,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262771093] [2024-11-23 23:47:40,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:40,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:42,851 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:47:42,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:42,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262771093] [2024-11-23 23:47:42,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262771093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:42,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:47:42,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:47:42,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374362501] [2024-11-23 23:47:42,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:42,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:47:42,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:42,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:47:42,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:47:42,860 INFO L87 Difference]: Start difference. First operand 2982 states and 4071 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:47:43,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:43,001 INFO L93 Difference]: Finished difference Result 2984 states and 4072 transitions. [2024-11-23 23:47:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:47:43,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2024-11-23 23:47:43,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:43,022 INFO L225 Difference]: With dead ends: 2984 [2024-11-23 23:47:43,022 INFO L226 Difference]: Without dead ends: 2981 [2024-11-23 23:47:43,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:47:43,026 INFO L435 NwaCegarLoop]: 1029 mSDtfsCounter, 1004 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:43,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 1029 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:47:43,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2024-11-23 23:47:43,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 2981. [2024-11-23 23:47:43,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2208 states have (on average 1.3020833333333333) internal successors, (2875), 2265 states have internal predecessors, (2875), 576 states have call successors, (576), 197 states have call predecessors, (576), 196 states have return successors, (618), 554 states have call predecessors, (618), 574 states have call successors, (618) [2024-11-23 23:47:43,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 4069 transitions. [2024-11-23 23:47:43,244 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 4069 transitions. Word has length 41 [2024-11-23 23:47:43,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:43,245 INFO L471 AbstractCegarLoop]: Abstraction has 2981 states and 4069 transitions. [2024-11-23 23:47:43,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:47:43,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 4069 transitions. [2024-11-23 23:47:43,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-23 23:47:43,246 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:43,246 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:47:43,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:47:43,246 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:43,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:43,247 INFO L85 PathProgramCache]: Analyzing trace with hash -687370945, now seen corresponding path program 1 times [2024-11-23 23:47:43,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:43,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299661901] [2024-11-23 23:47:43,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:43,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:44,865 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:47:44,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:44,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299661901] [2024-11-23 23:47:44,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299661901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:44,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:47:44,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:47:44,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785919767] [2024-11-23 23:47:44,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:44,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:47:44,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:44,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:47:44,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:47:44,867 INFO L87 Difference]: Start difference. First operand 2981 states and 4069 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:47:45,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:45,030 INFO L93 Difference]: Finished difference Result 2983 states and 4070 transitions. [2024-11-23 23:47:45,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:47:45,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2024-11-23 23:47:45,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:45,049 INFO L225 Difference]: With dead ends: 2983 [2024-11-23 23:47:45,049 INFO L226 Difference]: Without dead ends: 2971 [2024-11-23 23:47:45,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:47:45,052 INFO L435 NwaCegarLoop]: 1028 mSDtfsCounter, 1001 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:45,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:47:45,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2024-11-23 23:47:45,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2971. [2024-11-23 23:47:45,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 2199 states have (on average 1.3015006821282402) internal successors, (2862), 2255 states have internal predecessors, (2862), 575 states have call successors, (575), 197 states have call predecessors, (575), 196 states have return successors, (618), 554 states have call predecessors, (618), 574 states have call successors, (618) [2024-11-23 23:47:45,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 4055 transitions. [2024-11-23 23:47:45,269 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 4055 transitions. Word has length 42 [2024-11-23 23:47:45,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:45,270 INFO L471 AbstractCegarLoop]: Abstraction has 2971 states and 4055 transitions. [2024-11-23 23:47:45,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:47:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 4055 transitions. [2024-11-23 23:47:45,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-23 23:47:45,280 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:45,281 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:47:45,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:47:45,282 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:45,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:45,283 INFO L85 PathProgramCache]: Analyzing trace with hash 219489901, now seen corresponding path program 1 times [2024-11-23 23:47:45,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:45,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747172481] [2024-11-23 23:47:45,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:45,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:46,858 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:47:46,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:46,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747172481] [2024-11-23 23:47:46,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747172481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:46,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:47:46,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:47:46,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381098438] [2024-11-23 23:47:46,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:46,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:47:46,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:46,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:47:46,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:47:46,860 INFO L87 Difference]: Start difference. First operand 2971 states and 4055 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 23:47:47,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:47,245 INFO L93 Difference]: Finished difference Result 6764 states and 9132 transitions. [2024-11-23 23:47:47,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:47:47,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2024-11-23 23:47:47,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:47,270 INFO L225 Difference]: With dead ends: 6764 [2024-11-23 23:47:47,270 INFO L226 Difference]: Without dead ends: 3800 [2024-11-23 23:47:47,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:47:47,281 INFO L435 NwaCegarLoop]: 1074 mSDtfsCounter, 272 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:47,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 2071 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:47:47,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2024-11-23 23:47:47,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3792. [2024-11-23 23:47:47,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3792 states, 2804 states have (on average 1.2838801711840229) internal successors, (3600), 2868 states have internal predecessors, (3600), 712 states have call successors, (712), 276 states have call predecessors, (712), 275 states have return successors, (763), 691 states have call predecessors, (763), 711 states have call successors, (763) [2024-11-23 23:47:47,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 5075 transitions. [2024-11-23 23:47:47,542 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 5075 transitions. Word has length 90 [2024-11-23 23:47:47,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:47,542 INFO L471 AbstractCegarLoop]: Abstraction has 3792 states and 5075 transitions. [2024-11-23 23:47:47,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 23:47:47,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 5075 transitions. [2024-11-23 23:47:47,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-23 23:47:47,550 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:47,550 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:47:47,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:47:47,550 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:47,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:47,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1370410976, now seen corresponding path program 1 times [2024-11-23 23:47:47,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:47,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156041773] [2024-11-23 23:47:47,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:47,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:49,517 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 23:47:49,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:49,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156041773] [2024-11-23 23:47:49,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156041773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:49,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:47:49,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:47:49,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857444837] [2024-11-23 23:47:49,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:49,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:47:49,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:49,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:47:49,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:47:49,519 INFO L87 Difference]: Start difference. First operand 3792 states and 5075 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 23:47:53,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:47:54,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:54,061 INFO L93 Difference]: Finished difference Result 8440 states and 11244 transitions. [2024-11-23 23:47:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:47:54,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 106 [2024-11-23 23:47:54,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:54,088 INFO L225 Difference]: With dead ends: 8440 [2024-11-23 23:47:54,088 INFO L226 Difference]: Without dead ends: 4662 [2024-11-23 23:47:54,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:47:54,101 INFO L435 NwaCegarLoop]: 1285 mSDtfsCounter, 280 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:54,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 2283 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-23 23:47:54,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4662 states. [2024-11-23 23:47:54,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4662 to 4654. [2024-11-23 23:47:54,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4654 states, 3452 states have (on average 1.2746234067207416) internal successors, (4400), 3524 states have internal predecessors, (4400), 848 states have call successors, (848), 354 states have call predecessors, (848), 353 states have return successors, (907), 827 states have call predecessors, (907), 847 states have call successors, (907) [2024-11-23 23:47:54,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4654 states to 4654 states and 6155 transitions. [2024-11-23 23:47:54,412 INFO L78 Accepts]: Start accepts. Automaton has 4654 states and 6155 transitions. Word has length 106 [2024-11-23 23:47:54,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:54,412 INFO L471 AbstractCegarLoop]: Abstraction has 4654 states and 6155 transitions. [2024-11-23 23:47:54,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 23:47:54,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4654 states and 6155 transitions. [2024-11-23 23:47:54,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-23 23:47:54,424 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:54,424 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2024-11-23 23:47:54,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:47:54,424 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:54,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:54,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1193550718, now seen corresponding path program 1 times [2024-11-23 23:47:54,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:54,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564992709] [2024-11-23 23:47:54,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:54,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:56,107 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-23 23:47:56,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:56,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564992709] [2024-11-23 23:47:56,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564992709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:56,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:47:56,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:47:56,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195066194] [2024-11-23 23:47:56,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:56,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:47:56,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:56,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:47:56,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:47:56,111 INFO L87 Difference]: Start difference. First operand 4654 states and 6155 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:48:00,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:48:00,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:48:00,680 INFO L93 Difference]: Finished difference Result 11336 states and 14962 transitions. [2024-11-23 23:48:00,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:48:00,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 118 [2024-11-23 23:48:00,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:48:00,736 INFO L225 Difference]: With dead ends: 11336 [2024-11-23 23:48:00,736 INFO L226 Difference]: Without dead ends: 6696 [2024-11-23 23:48:00,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:48:00,754 INFO L435 NwaCegarLoop]: 1266 mSDtfsCounter, 812 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:48:00,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 2121 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-23 23:48:00,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6696 states. [2024-11-23 23:48:01,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6696 to 6688. [2024-11-23 23:48:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6688 states, 5000 states have (on average 1.2808) internal successors, (6404), 5120 states have internal predecessors, (6404), 1152 states have call successors, (1152), 536 states have call predecessors, (1152), 535 states have return successors, (1237), 1115 states have call predecessors, (1237), 1151 states have call successors, (1237) [2024-11-23 23:48:01,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6688 states to 6688 states and 8793 transitions. [2024-11-23 23:48:01,243 INFO L78 Accepts]: Start accepts. Automaton has 6688 states and 8793 transitions. Word has length 118 [2024-11-23 23:48:01,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:48:01,244 INFO L471 AbstractCegarLoop]: Abstraction has 6688 states and 8793 transitions. [2024-11-23 23:48:01,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:48:01,244 INFO L276 IsEmpty]: Start isEmpty. Operand 6688 states and 8793 transitions. [2024-11-23 23:48:01,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 23:48:01,249 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:48:01,249 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:48:01,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:48:01,250 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:48:01,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:48:01,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1686531040, now seen corresponding path program 1 times [2024-11-23 23:48:01,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:48:01,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812795973] [2024-11-23 23:48:01,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:48:01,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:48:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:48:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-23 23:48:03,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:48:03,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812795973] [2024-11-23 23:48:03,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812795973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:48:03,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:48:03,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:48:03,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786051655] [2024-11-23 23:48:03,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:48:03,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:48:03,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:48:03,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:48:03,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:48:03,358 INFO L87 Difference]: Start difference. First operand 6688 states and 8793 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:48:03,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:48:03,949 INFO L93 Difference]: Finished difference Result 17752 states and 23435 transitions. [2024-11-23 23:48:03,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:48:03,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 123 [2024-11-23 23:48:03,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:48:04,024 INFO L225 Difference]: With dead ends: 17752 [2024-11-23 23:48:04,025 INFO L226 Difference]: Without dead ends: 11078 [2024-11-23 23:48:04,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:48:04,051 INFO L435 NwaCegarLoop]: 1267 mSDtfsCounter, 883 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:48:04,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 2270 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:48:04,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11078 states. [2024-11-23 23:48:04,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11078 to 11056. [2024-11-23 23:48:04,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11056 states, 8323 states have (on average 1.2955665024630543) internal successors, (10783), 8531 states have internal predecessors, (10783), 1848 states have call successors, (1848), 885 states have call predecessors, (1848), 884 states have return successors, (1991), 1775 states have call predecessors, (1991), 1847 states have call successors, (1991) [2024-11-23 23:48:04,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11056 states to 11056 states and 14622 transitions. [2024-11-23 23:48:04,808 INFO L78 Accepts]: Start accepts. Automaton has 11056 states and 14622 transitions. Word has length 123 [2024-11-23 23:48:04,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:48:04,808 INFO L471 AbstractCegarLoop]: Abstraction has 11056 states and 14622 transitions. [2024-11-23 23:48:04,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:48:04,809 INFO L276 IsEmpty]: Start isEmpty. Operand 11056 states and 14622 transitions. [2024-11-23 23:48:04,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-23 23:48:04,817 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:48:04,818 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:48:04,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:48:04,818 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:48:04,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:48:04,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1982233267, now seen corresponding path program 1 times [2024-11-23 23:48:04,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:48:04,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279785799] [2024-11-23 23:48:04,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:48:04,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:48:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:48:06,678 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-23 23:48:06,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:48:06,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279785799] [2024-11-23 23:48:06,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279785799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:48:06,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:48:06,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:48:06,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999757031] [2024-11-23 23:48:06,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:48:06,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:48:06,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:48:06,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:48:06,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:48:06,683 INFO L87 Difference]: Start difference. First operand 11056 states and 14622 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 23:48:07,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:48:07,210 INFO L93 Difference]: Finished difference Result 22126 states and 29272 transitions. [2024-11-23 23:48:07,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:48:07,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2024-11-23 23:48:07,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:48:07,276 INFO L225 Difference]: With dead ends: 22126 [2024-11-23 23:48:07,276 INFO L226 Difference]: Without dead ends: 11088 [2024-11-23 23:48:07,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:48:07,310 INFO L435 NwaCegarLoop]: 1022 mSDtfsCounter, 1 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2040 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 [2024-11-23 23:48:07,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2040 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:48:07,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11088 states. [2024-11-23 23:48:07,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11088 to 11072. [2024-11-23 23:48:07,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11072 states, 8339 states have (on average 1.2949994004077228) internal successors, (10799), 8547 states have internal predecessors, (10799), 1848 states have call successors, (1848), 885 states have call predecessors, (1848), 884 states have return successors, (1991), 1775 states have call predecessors, (1991), 1847 states have call successors, (1991) [2024-11-23 23:48:08,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11072 states to 11072 states and 14638 transitions. [2024-11-23 23:48:08,039 INFO L78 Accepts]: Start accepts. Automaton has 11072 states and 14638 transitions. Word has length 139 [2024-11-23 23:48:08,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:48:08,040 INFO L471 AbstractCegarLoop]: Abstraction has 11072 states and 14638 transitions. [2024-11-23 23:48:08,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 23:48:08,040 INFO L276 IsEmpty]: Start isEmpty. Operand 11072 states and 14638 transitions. [2024-11-23 23:48:08,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-23 23:48:08,051 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:48:08,051 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:48:08,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:48:08,052 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:48:08,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:48:08,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1538999567, now seen corresponding path program 1 times [2024-11-23 23:48:08,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:48:08,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835847110] [2024-11-23 23:48:08,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:48:08,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:48:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:48:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-23 23:48:09,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:48:09,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835847110] [2024-11-23 23:48:09,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835847110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:48:09,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159442033] [2024-11-23 23:48:09,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:48:09,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:48:09,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:48:09,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:48:09,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:48:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:48:12,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 2294 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:48:12,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:48:12,657 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-23 23:48:12,658 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:48:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-23 23:48:13,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159442033] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:48:13,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:48:13,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-23 23:48:13,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003185042] [2024-11-23 23:48:13,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:48:13,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:48:13,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:48:13,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:48:13,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:48:13,146 INFO L87 Difference]: Start difference. First operand 11072 states and 14638 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 23:48:14,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:48:14,161 INFO L93 Difference]: Finished difference Result 22222 states and 29400 transitions. [2024-11-23 23:48:14,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:48:14,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 141 [2024-11-23 23:48:14,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:48:14,253 INFO L225 Difference]: With dead ends: 22222 [2024-11-23 23:48:14,254 INFO L226 Difference]: Without dead ends: 11168 [2024-11-23 23:48:14,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:48:14,283 INFO L435 NwaCegarLoop]: 1022 mSDtfsCounter, 2 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:48:14,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3058 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:48:14,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11168 states. [2024-11-23 23:48:15,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11168 to 11168. [2024-11-23 23:48:15,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11168 states, 8435 states have (on average 1.2916419679905158) internal successors, (10895), 8643 states have internal predecessors, (10895), 1848 states have call successors, (1848), 885 states have call predecessors, (1848), 884 states have return successors, (1991), 1775 states have call predecessors, (1991), 1847 states have call successors, (1991) [2024-11-23 23:48:15,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11168 states to 11168 states and 14734 transitions. [2024-11-23 23:48:15,312 INFO L78 Accepts]: Start accepts. Automaton has 11168 states and 14734 transitions. Word has length 141 [2024-11-23 23:48:15,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:48:15,313 INFO L471 AbstractCegarLoop]: Abstraction has 11168 states and 14734 transitions. [2024-11-23 23:48:15,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 23:48:15,313 INFO L276 IsEmpty]: Start isEmpty. Operand 11168 states and 14734 transitions. [2024-11-23 23:48:15,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-23 23:48:15,328 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:48:15,328 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:48:15,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:48:15,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:48:15,534 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:48:15,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:48:15,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1653193251, now seen corresponding path program 2 times [2024-11-23 23:48:15,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:48:15,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028787408] [2024-11-23 23:48:15,536 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:48:15,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:48:18,170 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:48:18,170 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:48:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-23 23:48:18,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:48:18,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028787408] [2024-11-23 23:48:18,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028787408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:48:18,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551671062] [2024-11-23 23:48:18,915 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:48:18,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:48:18,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:48:18,918 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:48:18,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8627f2b4-4f75-43f1-ab9d-4d88864272f1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process