./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--esd_usb2.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1 --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 781669661afd0476205c0d0f127c7931dffbaabf4aae46244e576c29ee5a8115 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:07:42,116 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:07:42,171 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 07:07:42,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:07:42,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:07:42,195 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:07:42,196 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:07:42,196 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:07:42,196 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:07:42,196 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:07:42,197 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:07:42,197 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:07:42,197 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:07:42,197 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:07:42,197 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:07:42,197 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:07:42,198 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:07:42,198 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:07:42,198 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:07:42,198 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:07:42,198 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:07:42,198 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:07:42,198 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:07:42,198 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:07:42,198 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:07:42,198 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:07:42,199 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:07:42,199 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:07:42,199 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:07:42,199 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:07:42,199 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:07:42,199 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:07:42,199 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:07:42,199 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:07:42,199 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:07:42,199 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:07:42,199 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:07:42,200 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:07:42,200 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:07:42,200 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:07:42,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:07:42,200 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:07:42,200 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:07:42,200 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:07:42,200 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:07:42,200 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_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1 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 -> 781669661afd0476205c0d0f127c7931dffbaabf4aae46244e576c29ee5a8115 [2024-12-02 07:07:42,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:07:42,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:07:42,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:07:42,409 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:07:42,409 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:07:42,410 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2024-12-02 07:07:45,004 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/data/97d6b6439/af5673dd07ee4be9b7bba3d05aa60c40/FLAGde6ffd6bc [2024-12-02 07:07:45,399 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:07:45,399 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2024-12-02 07:07:45,423 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/data/97d6b6439/af5673dd07ee4be9b7bba3d05aa60c40/FLAGde6ffd6bc [2024-12-02 07:07:45,587 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/data/97d6b6439/af5673dd07ee4be9b7bba3d05aa60c40 [2024-12-02 07:07:45,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:07:45,590 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:07:45,591 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:07:45,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:07:45,594 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:07:45,595 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:07:45" (1/1) ... [2024-12-02 07:07:45,595 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a5b89be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:45, skipping insertion in model container [2024-12-02 07:07:45,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:07:45" (1/1) ... [2024-12-02 07:07:45,670 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:07:46,296 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_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i[163937,163950] [2024-12-02 07:07:46,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:07:46,712 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:07:46,822 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"); [5448] [2024-12-02 07:07:46,823 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)); [5455] [2024-12-02 07:07:46,824 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"); [5463-5464] [2024-12-02 07:07:46,825 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)); [5493] [2024-12-02 07:07:46,826 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)); [5500] [2024-12-02 07:07:46,834 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_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i[163937,163950] [2024-12-02 07:07:47,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:07:47,068 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:07:47,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:47 WrapperNode [2024-12-02 07:07:47,069 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:07:47,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:07:47,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:07:47,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:07:47,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:47" (1/1) ... [2024-12-02 07:07:47,107 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:47" (1/1) ... [2024-12-02 07:07:47,199 INFO L138 Inliner]: procedures = 161, calls = 852, calls flagged for inlining = 73, calls inlined = 73, statements flattened = 2678 [2024-12-02 07:07:47,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:07:47,200 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:07:47,200 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:07:47,200 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:07:47,209 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:47" (1/1) ... [2024-12-02 07:07:47,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:47" (1/1) ... [2024-12-02 07:07:47,225 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:47" (1/1) ... [2024-12-02 07:07:47,559 INFO L175 MemorySlicer]: Split 518 memory accesses to 8 slices as follows [19, 2, 368, 9, 19, 48, 44, 9]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [0, 2, 5, 0, 0, 0, 0, 0]. The 304 writes are split as follows [11, 0, 196, 0, 0, 48, 44, 5]. [2024-12-02 07:07:47,559 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:47" (1/1) ... [2024-12-02 07:07:47,560 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:47" (1/1) ... [2024-12-02 07:07:47,615 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:47" (1/1) ... [2024-12-02 07:07:47,619 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:47" (1/1) ... [2024-12-02 07:07:47,630 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:47" (1/1) ... [2024-12-02 07:07:47,642 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:47" (1/1) ... [2024-12-02 07:07:47,651 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:47" (1/1) ... [2024-12-02 07:07:47,667 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:07:47,668 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:07:47,668 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:07:47,668 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:07:47,669 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:47" (1/1) ... [2024-12-02 07:07:47,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:07:47,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:07:47,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:07:47,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:07:47,726 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2024-12-02 07:07:47,726 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2024-12-02 07:07:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_2 [2024-12-02 07:07:47,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_2 [2024-12-02 07:07:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_17 [2024-12-02 07:07:47,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_17 [2024-12-02 07:07:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 07:07:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 07:07:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 07:07:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 07:07:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 07:07:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 07:07:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-12-02 07:07:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-12-02 07:07:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2024-12-02 07:07:47,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2024-12-02 07:07:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2024-12-02 07:07:47,728 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2024-12-02 07:07:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 07:07:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 07:07:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 07:07:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 07:07:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 07:07:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 07:07:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-12-02 07:07:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-12-02 07:07:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-12-02 07:07:47,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-12-02 07:07:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 07:07:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 07:07:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 07:07:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 07:07:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 07:07:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 07:07:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 07:07:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 07:07:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2024-12-02 07:07:47,729 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2024-12-02 07:07:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure can_free_echo_skb [2024-12-02 07:07:47,729 INFO L138 BoogieDeclarations]: Found implementation of procedure can_free_echo_skb [2024-12-02 07:07:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2024-12-02 07:07:47,729 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2024-12-02 07:07:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2024-12-02 07:07:47,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2024-12-02 07:07:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2024-12-02 07:07:47,730 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2024-12-02 07:07:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2024-12-02 07:07:47,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2024-12-02 07:07:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-12-02 07:07:47,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-12-02 07:07:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2024-12-02 07:07:47,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2024-12-02 07:07:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2024-12-02 07:07:47,730 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2024-12-02 07:07:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-12-02 07:07:47,730 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-12-02 07:07:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2024-12-02 07:07:47,730 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2024-12-02 07:07:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 07:07:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 07:07:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 07:07:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 07:07:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 07:07:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 07:07:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 07:07:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-12-02 07:07:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-12-02 07:07:47,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-12-02 07:07:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2024-12-02 07:07:47,731 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2024-12-02 07:07:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-12-02 07:07:47,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-12-02 07:07:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 07:07:47,731 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 07:07:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2024-12-02 07:07:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2024-12-02 07:07:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 07:07:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2024-12-02 07:07:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2024-12-02 07:07:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2024-12-02 07:07:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2024-12-02 07:07:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_4 [2024-12-02 07:07:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_4 [2024-12-02 07:07:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:07:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2024-12-02 07:07:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2024-12-02 07:07:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2024-12-02 07:07:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2024-12-02 07:07:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 07:07:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 07:07:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 07:07:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 07:07:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 07:07:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 07:07:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 07:07:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 07:07:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-12-02 07:07:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-12-02 07:07:47,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-12-02 07:07:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2024-12-02 07:07:47,733 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2024-12-02 07:07:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2024-12-02 07:07:47,733 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2024-12-02 07:07:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 07:07:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 07:07:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 07:07:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 07:07:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 07:07:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 07:07:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 07:07:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-12-02 07:07:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2024-12-02 07:07:47,734 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2024-12-02 07:07:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2024-12-02 07:07:47,734 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2024-12-02 07:07:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2024-12-02 07:07:47,734 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2024-12-02 07:07:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 07:07:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2024-12-02 07:07:47,734 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2024-12-02 07:07:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_read_bulk_callback [2024-12-02 07:07:47,734 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_read_bulk_callback [2024-12-02 07:07:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2024-12-02 07:07:47,734 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2024-12-02 07:07:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2024-12-02 07:07:47,734 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2024-12-02 07:07:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_send_msg [2024-12-02 07:07:47,735 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_send_msg [2024-12-02 07:07:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2024-12-02 07:07:47,735 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2024-12-02 07:07:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2024-12-02 07:07:47,735 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2024-12-02 07:07:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2024-12-02 07:07:47,735 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2024-12-02 07:07:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2024-12-02 07:07:47,735 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2024-12-02 07:07:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2024-12-02 07:07:47,735 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2024-12-02 07:07:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2024-12-02 07:07:47,735 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2024-12-02 07:07:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2024-12-02 07:07:47,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2024-12-02 07:07:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2024-12-02 07:07:47,735 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2024-12-02 07:07:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2024-12-02 07:07:47,736 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2024-12-02 07:07:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:07:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 07:07:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 07:07:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 07:07:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 07:07:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 07:07:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 07:07:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 07:07:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2024-12-02 07:07:47,736 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2024-12-02 07:07:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-12-02 07:07:47,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-12-02 07:07:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2024-12-02 07:07:47,736 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2024-12-02 07:07:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_disconnect [2024-12-02 07:07:47,737 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_disconnect [2024-12-02 07:07:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:07:47,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:07:48,171 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:07:48,173 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:07:48,251 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-12-02 07:07:48,469 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2024-12-02 07:07:55,458 INFO L? ?]: Removed 1041 outVars from TransFormulas that were not future-live. [2024-12-02 07:07:55,458 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:07:55,483 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:07:55,484 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 07:07:55,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:07:55 BoogieIcfgContainer [2024-12-02 07:07:55,484 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:07:55,486 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:07:55,486 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:07:55,491 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:07:55,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:07:45" (1/3) ... [2024-12-02 07:07:55,492 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f53bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:07:55, skipping insertion in model container [2024-12-02 07:07:55,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:47" (2/3) ... [2024-12-02 07:07:55,492 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f53bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:07:55, skipping insertion in model container [2024-12-02 07:07:55,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:07:55" (3/3) ... [2024-12-02 07:07:55,493 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2024-12-02 07:07:55,504 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:07:55,507 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i that has 52 procedures, 847 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-12-02 07:07:55,565 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:07:55,575 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;@3a5f6ddc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:07:55,575 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:07:55,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 845 states, 627 states have (on average 1.3572567783094098) internal successors, (851), 655 states have internal predecessors, (851), 167 states have call successors, (167), 51 states have call predecessors, (167), 49 states have return successors, (158), 156 states have call predecessors, (158), 158 states have call successors, (158) [2024-12-02 07:07:55,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 07:07:55,592 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:55,592 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:07:55,593 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:55,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:55,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1633835070, now seen corresponding path program 1 times [2024-12-02 07:07:55,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:55,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489315574] [2024-12-02 07:07:55,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:55,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:59,385 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-12-02 07:07:59,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:59,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489315574] [2024-12-02 07:07:59,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489315574] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:59,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:59,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:07:59,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306793410] [2024-12-02 07:07:59,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:59,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:07:59,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:59,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:07:59,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:07:59,414 INFO L87 Difference]: Start difference. First operand has 845 states, 627 states have (on average 1.3572567783094098) internal successors, (851), 655 states have internal predecessors, (851), 167 states have call successors, (167), 51 states have call predecessors, (167), 49 states have return successors, (158), 156 states have call predecessors, (158), 158 states have call successors, (158) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 07:08:03,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:08:04,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:08:04,073 INFO L93 Difference]: Finished difference Result 2473 states and 3505 transitions. [2024-12-02 07:08:04,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:08:04,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 83 [2024-12-02 07:08:04,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:08:04,097 INFO L225 Difference]: With dead ends: 2473 [2024-12-02 07:08:04,097 INFO L226 Difference]: Without dead ends: 1605 [2024-12-02 07:08:04,104 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 [2024-12-02 07:08:04,107 INFO L435 NwaCegarLoop]: 1160 mSDtfsCounter, 1078 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:08:04,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 2293 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-12-02 07:08:04,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2024-12-02 07:08:04,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1605. [2024-12-02 07:08:04,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1210 states have (on average 1.3173553719008264) internal successors, (1594), 1240 states have internal predecessors, (1594), 298 states have call successors, (298), 97 states have call predecessors, (298), 96 states have return successors, (293), 289 states have call predecessors, (293), 293 states have call successors, (293) [2024-12-02 07:08:04,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2185 transitions. [2024-12-02 07:08:04,245 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2185 transitions. Word has length 83 [2024-12-02 07:08:04,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:08:04,246 INFO L471 AbstractCegarLoop]: Abstraction has 1605 states and 2185 transitions. [2024-12-02 07:08:04,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 07:08:04,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2185 transitions. [2024-12-02 07:08:04,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 07:08:04,251 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:08:04,251 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:08:04,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:08:04,252 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:08:04,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:08:04,252 INFO L85 PathProgramCache]: Analyzing trace with hash 465789976, now seen corresponding path program 1 times [2024-12-02 07:08:04,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:08:04,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258686625] [2024-12-02 07:08:04,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:04,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:08:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:07,919 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-12-02 07:08:07,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:08:07,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258686625] [2024-12-02 07:08:07,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258686625] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:08:07,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:08:07,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:08:07,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113995624] [2024-12-02 07:08:07,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:08:07,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:08:07,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:08:07,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:08:07,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:08:07,923 INFO L87 Difference]: Start difference. First operand 1605 states and 2185 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 07:08:08,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:08:08,278 INFO L93 Difference]: Finished difference Result 4764 states and 6498 transitions. [2024-12-02 07:08:08,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:08:08,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 93 [2024-12-02 07:08:08,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:08:08,299 INFO L225 Difference]: With dead ends: 4764 [2024-12-02 07:08:08,299 INFO L226 Difference]: Without dead ends: 3184 [2024-12-02 07:08:08,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:08:08,306 INFO L435 NwaCegarLoop]: 1582 mSDtfsCounter, 1083 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:08:08,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 2662 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:08:08,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3184 states. [2024-12-02 07:08:08,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3184 to 3174. [2024-12-02 07:08:08,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3174 states, 2401 states have (on average 1.3173677634319034) internal successors, (3163), 2457 states have internal predecessors, (3163), 580 states have call successors, (580), 193 states have call predecessors, (580), 192 states have return successors, (585), 567 states have call predecessors, (585), 575 states have call successors, (585) [2024-12-02 07:08:08,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 4328 transitions. [2024-12-02 07:08:08,458 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 4328 transitions. Word has length 93 [2024-12-02 07:08:08,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:08:08,458 INFO L471 AbstractCegarLoop]: Abstraction has 3174 states and 4328 transitions. [2024-12-02 07:08:08,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 07:08:08,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 4328 transitions. [2024-12-02 07:08:08,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 07:08:08,462 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:08:08,462 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:08:08,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:08:08,462 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:08:08,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:08:08,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1554253444, now seen corresponding path program 1 times [2024-12-02 07:08:08,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:08:08,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717065947] [2024-12-02 07:08:08,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:08,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:08:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:12,380 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-12-02 07:08:12,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:08:12,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717065947] [2024-12-02 07:08:12,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717065947] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:08:12,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:08:12,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:08:12,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052468586] [2024-12-02 07:08:12,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:08:12,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:08:12,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:08:12,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:08:12,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:08:12,382 INFO L87 Difference]: Start difference. First operand 3174 states and 4328 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 07:08:12,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:08:12,566 INFO L93 Difference]: Finished difference Result 3176 states and 4329 transitions. [2024-12-02 07:08:12,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:08:12,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 94 [2024-12-02 07:08:12,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:08:12,584 INFO L225 Difference]: With dead ends: 3176 [2024-12-02 07:08:12,584 INFO L226 Difference]: Without dead ends: 3173 [2024-12-02 07:08:12,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:08:12,587 INFO L435 NwaCegarLoop]: 1125 mSDtfsCounter, 1083 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1125 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 [2024-12-02 07:08:12,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1125 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:08:12,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2024-12-02 07:08:12,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 3173. [2024-12-02 07:08:12,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3173 states, 2401 states have (on average 1.31695127030404) internal successors, (3162), 2456 states have internal predecessors, (3162), 579 states have call successors, (579), 193 states have call predecessors, (579), 192 states have return successors, (585), 567 states have call predecessors, (585), 575 states have call successors, (585) [2024-12-02 07:08:12,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3173 states to 3173 states and 4326 transitions. [2024-12-02 07:08:12,800 INFO L78 Accepts]: Start accepts. Automaton has 3173 states and 4326 transitions. Word has length 94 [2024-12-02 07:08:12,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:08:12,800 INFO L471 AbstractCegarLoop]: Abstraction has 3173 states and 4326 transitions. [2024-12-02 07:08:12,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 07:08:12,800 INFO L276 IsEmpty]: Start isEmpty. Operand 3173 states and 4326 transitions. [2024-12-02 07:08:12,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 07:08:12,802 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:08:12,802 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:08:12,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:08:12,802 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:08:12,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:08:12,803 INFO L85 PathProgramCache]: Analyzing trace with hash 936887451, now seen corresponding path program 1 times [2024-12-02 07:08:12,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:08:12,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982264931] [2024-12-02 07:08:12,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:12,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:08:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-12-02 07:08:15,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:08:15,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982264931] [2024-12-02 07:08:15,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982264931] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:08:15,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:08:15,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:08:15,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055688109] [2024-12-02 07:08:15,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:08:15,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:08:15,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:08:15,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:08:15,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:08:15,683 INFO L87 Difference]: Start difference. First operand 3173 states and 4326 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 07:08:15,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:08:15,867 INFO L93 Difference]: Finished difference Result 3175 states and 4327 transitions. [2024-12-02 07:08:15,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:08:15,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 95 [2024-12-02 07:08:15,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:08:15,885 INFO L225 Difference]: With dead ends: 3175 [2024-12-02 07:08:15,885 INFO L226 Difference]: Without dead ends: 3172 [2024-12-02 07:08:15,887 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 [2024-12-02 07:08:15,888 INFO L435 NwaCegarLoop]: 1123 mSDtfsCounter, 1080 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1123 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 [2024-12-02 07:08:15,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1123 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:08:15,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states. [2024-12-02 07:08:16,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 3172. [2024-12-02 07:08:16,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3172 states, 2401 states have (on average 1.3165347771761766) internal successors, (3161), 2455 states have internal predecessors, (3161), 578 states have call successors, (578), 193 states have call predecessors, (578), 192 states have return successors, (585), 567 states have call predecessors, (585), 575 states have call successors, (585) [2024-12-02 07:08:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3172 states to 3172 states and 4324 transitions. [2024-12-02 07:08:16,100 INFO L78 Accepts]: Start accepts. Automaton has 3172 states and 4324 transitions. Word has length 95 [2024-12-02 07:08:16,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:08:16,100 INFO L471 AbstractCegarLoop]: Abstraction has 3172 states and 4324 transitions. [2024-12-02 07:08:16,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 07:08:16,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3172 states and 4324 transitions. [2024-12-02 07:08:16,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 07:08:16,103 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:08:16,103 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:08:16,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:08:16,103 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:08:16,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:08:16,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1021584281, now seen corresponding path program 1 times [2024-12-02 07:08:16,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:08:16,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911052443] [2024-12-02 07:08:16,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:16,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:08:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:19,324 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-12-02 07:08:19,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:08:19,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911052443] [2024-12-02 07:08:19,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911052443] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:08:19,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:08:19,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:08:19,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492425752] [2024-12-02 07:08:19,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:08:19,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:08:19,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:08:19,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:08:19,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:08:19,325 INFO L87 Difference]: Start difference. First operand 3172 states and 4324 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 07:08:19,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:08:19,431 INFO L93 Difference]: Finished difference Result 3174 states and 4325 transitions. [2024-12-02 07:08:19,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:08:19,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 96 [2024-12-02 07:08:19,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:08:19,444 INFO L225 Difference]: With dead ends: 3174 [2024-12-02 07:08:19,445 INFO L226 Difference]: Without dead ends: 3171 [2024-12-02 07:08:19,446 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 [2024-12-02 07:08:19,447 INFO L435 NwaCegarLoop]: 1121 mSDtfsCounter, 1077 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 1121 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 [2024-12-02 07:08:19,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 1121 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:08:19,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2024-12-02 07:08:19,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3171. [2024-12-02 07:08:19,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3171 states, 2401 states have (on average 1.3161182840483132) internal successors, (3160), 2454 states have internal predecessors, (3160), 577 states have call successors, (577), 193 states have call predecessors, (577), 192 states have return successors, (585), 567 states have call predecessors, (585), 575 states have call successors, (585) [2024-12-02 07:08:19,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 4322 transitions. [2024-12-02 07:08:19,574 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 4322 transitions. Word has length 96 [2024-12-02 07:08:19,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:08:19,575 INFO L471 AbstractCegarLoop]: Abstraction has 3171 states and 4322 transitions. [2024-12-02 07:08:19,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 07:08:19,575 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 4322 transitions. [2024-12-02 07:08:19,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 07:08:19,576 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:08:19,576 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:08:19,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 07:08:19,577 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:08:19,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:08:19,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1604660962, now seen corresponding path program 1 times [2024-12-02 07:08:19,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:08:19,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334110934] [2024-12-02 07:08:19,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:19,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:08:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:22,579 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-12-02 07:08:22,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:08:22,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334110934] [2024-12-02 07:08:22,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334110934] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:08:22,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:08:22,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:08:22,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827753172] [2024-12-02 07:08:22,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:08:22,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:08:22,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:08:22,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:08:22,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:08:22,581 INFO L87 Difference]: Start difference. First operand 3171 states and 4322 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 07:08:22,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:08:22,769 INFO L93 Difference]: Finished difference Result 3173 states and 4323 transitions. [2024-12-02 07:08:22,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:08:22,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 97 [2024-12-02 07:08:22,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:08:22,784 INFO L225 Difference]: With dead ends: 3173 [2024-12-02 07:08:22,784 INFO L226 Difference]: Without dead ends: 3161 [2024-12-02 07:08:22,786 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 [2024-12-02 07:08:22,786 INFO L435 NwaCegarLoop]: 1120 mSDtfsCounter, 1074 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 1120 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 [2024-12-02 07:08:22,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:08:22,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2024-12-02 07:08:22,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 3161. [2024-12-02 07:08:22,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3161 states, 2392 states have (on average 1.3156354515050168) internal successors, (3147), 2444 states have internal predecessors, (3147), 576 states have call successors, (576), 193 states have call predecessors, (576), 192 states have return successors, (585), 567 states have call predecessors, (585), 575 states have call successors, (585) [2024-12-02 07:08:23,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3161 states to 3161 states and 4308 transitions. [2024-12-02 07:08:23,002 INFO L78 Accepts]: Start accepts. Automaton has 3161 states and 4308 transitions. Word has length 97 [2024-12-02 07:08:23,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:08:23,002 INFO L471 AbstractCegarLoop]: Abstraction has 3161 states and 4308 transitions. [2024-12-02 07:08:23,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-02 07:08:23,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3161 states and 4308 transitions. [2024-12-02 07:08:23,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 07:08:23,008 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:08:23,008 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:08:23,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:08:23,008 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:08:23,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:08:23,009 INFO L85 PathProgramCache]: Analyzing trace with hash 396437369, now seen corresponding path program 1 times [2024-12-02 07:08:23,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:08:23,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110527353] [2024-12-02 07:08:23,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:23,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:08:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:25,864 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-12-02 07:08:25,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:08:25,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110527353] [2024-12-02 07:08:25,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110527353] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:08:25,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:08:25,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:08:25,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89356702] [2024-12-02 07:08:25,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:08:25,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:08:25,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:08:25,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:08:25,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:08:25,866 INFO L87 Difference]: Start difference. First operand 3161 states and 4308 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:08:26,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:08:26,193 INFO L93 Difference]: Finished difference Result 7350 states and 9957 transitions. [2024-12-02 07:08:26,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:08:26,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 147 [2024-12-02 07:08:26,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:08:26,215 INFO L225 Difference]: With dead ends: 7350 [2024-12-02 07:08:26,215 INFO L226 Difference]: Without dead ends: 4214 [2024-12-02 07:08:26,226 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 [2024-12-02 07:08:26,227 INFO L435 NwaCegarLoop]: 1152 mSDtfsCounter, 385 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 2214 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:08:26,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 2214 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:08:26,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4214 states. [2024-12-02 07:08:26,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4214 to 4206. [2024-12-02 07:08:26,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4206 states, 3177 states have (on average 1.3065785332074284) internal successors, (4151), 3237 states have internal predecessors, (4151), 757 states have call successors, (757), 272 states have call predecessors, (757), 271 states have return successors, (766), 748 states have call predecessors, (766), 756 states have call successors, (766) [2024-12-02 07:08:26,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4206 states to 4206 states and 5674 transitions. [2024-12-02 07:08:26,500 INFO L78 Accepts]: Start accepts. Automaton has 4206 states and 5674 transitions. Word has length 147 [2024-12-02 07:08:26,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:08:26,500 INFO L471 AbstractCegarLoop]: Abstraction has 4206 states and 5674 transitions. [2024-12-02 07:08:26,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:08:26,500 INFO L276 IsEmpty]: Start isEmpty. Operand 4206 states and 5674 transitions. [2024-12-02 07:08:26,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 07:08:26,503 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:08:26,504 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:08:26,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:08:26,504 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:08:26,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:08:26,504 INFO L85 PathProgramCache]: Analyzing trace with hash 874446443, now seen corresponding path program 1 times [2024-12-02 07:08:26,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:08:26,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276329127] [2024-12-02 07:08:26,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:26,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:08:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:29,668 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-12-02 07:08:29,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:08:29,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276329127] [2024-12-02 07:08:29,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276329127] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:08:29,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:08:29,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:08:29,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205706779] [2024-12-02 07:08:29,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:08:29,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:08:29,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:08:29,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:08:29,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:08:29,671 INFO L87 Difference]: Start difference. First operand 4206 states and 5674 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 07:08:33,713 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 [] [2024-12-02 07:08:34,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:08:34,492 INFO L93 Difference]: Finished difference Result 9474 states and 12761 transitions. [2024-12-02 07:08:34,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:08:34,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 164 [2024-12-02 07:08:34,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:08:34,519 INFO L225 Difference]: With dead ends: 9474 [2024-12-02 07:08:34,519 INFO L226 Difference]: Without dead ends: 5300 [2024-12-02 07:08:34,531 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 [2024-12-02 07:08:34,532 INFO L435 NwaCegarLoop]: 1465 mSDtfsCounter, 366 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 2555 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:08:34,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 2555 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-12-02 07:08:34,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5300 states. [2024-12-02 07:08:34,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5300 to 5292. [2024-12-02 07:08:34,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5292 states, 4005 states have (on average 1.3026217228464418) internal successors, (5217), 4073 states have internal predecessors, (5217), 937 states have call successors, (937), 350 states have call predecessors, (937), 349 states have return successors, (946), 928 states have call predecessors, (946), 936 states have call successors, (946) [2024-12-02 07:08:34,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 7100 transitions. [2024-12-02 07:08:34,888 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 7100 transitions. Word has length 164 [2024-12-02 07:08:34,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:08:34,888 INFO L471 AbstractCegarLoop]: Abstraction has 5292 states and 7100 transitions. [2024-12-02 07:08:34,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 07:08:34,890 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 7100 transitions. [2024-12-02 07:08:34,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-12-02 07:08:34,896 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:08:34,896 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:08:34,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 07:08:34,897 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:08:34,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:08:34,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1872177772, now seen corresponding path program 1 times [2024-12-02 07:08:34,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:08:34,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147001543] [2024-12-02 07:08:34,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:34,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:08:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:38,071 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2024-12-02 07:08:38,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:08:38,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147001543] [2024-12-02 07:08:38,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147001543] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:08:38,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:08:38,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:08:38,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659349713] [2024-12-02 07:08:38,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:08:38,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:08:38,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:08:38,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:08:38,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:08:38,074 INFO L87 Difference]: Start difference. First operand 5292 states and 7100 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 07:08:42,111 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 [] [2024-12-02 07:08:42,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:08:42,998 INFO L93 Difference]: Finished difference Result 12774 states and 17071 transitions. [2024-12-02 07:08:42,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:08:42,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 178 [2024-12-02 07:08:42,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:08:43,026 INFO L225 Difference]: With dead ends: 12774 [2024-12-02 07:08:43,026 INFO L226 Difference]: Without dead ends: 7514 [2024-12-02 07:08:43,035 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 [2024-12-02 07:08:43,036 INFO L435 NwaCegarLoop]: 1810 mSDtfsCounter, 851 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 2784 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:08:43,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 2784 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-12-02 07:08:43,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7514 states. [2024-12-02 07:08:43,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7514 to 7506. [2024-12-02 07:08:43,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7506 states, 5725 states have (on average 1.3046288209606987) internal successors, (7469), 5821 states have internal predecessors, (7469), 1253 states have call successors, (1253), 528 states have call predecessors, (1253), 527 states have return successors, (1262), 1240 states have call predecessors, (1262), 1252 states have call successors, (1262) [2024-12-02 07:08:43,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7506 states to 7506 states and 9984 transitions. [2024-12-02 07:08:43,305 INFO L78 Accepts]: Start accepts. Automaton has 7506 states and 9984 transitions. Word has length 178 [2024-12-02 07:08:43,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:08:43,305 INFO L471 AbstractCegarLoop]: Abstraction has 7506 states and 9984 transitions. [2024-12-02 07:08:43,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 07:08:43,305 INFO L276 IsEmpty]: Start isEmpty. Operand 7506 states and 9984 transitions. [2024-12-02 07:08:43,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-12-02 07:08:43,310 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:08:43,310 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:08:43,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 07:08:43,311 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:08:43,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:08:43,311 INFO L85 PathProgramCache]: Analyzing trace with hash 730417441, now seen corresponding path program 1 times [2024-12-02 07:08:43,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:08:43,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788200666] [2024-12-02 07:08:43,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:43,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:08:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-12-02 07:08:46,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:08:46,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788200666] [2024-12-02 07:08:46,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788200666] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:08:46,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026326941] [2024-12-02 07:08:46,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:46,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:08:46,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:08:46,606 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:08:46,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:08:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:50,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:08:50,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:08:52,412 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-12-02 07:08:52,412 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:08:52,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026326941] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:08:52,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:08:52,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-12-02 07:08:52,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887528544] [2024-12-02 07:08:52,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:08:52,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:08:52,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:08:52,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:08:52,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:08:52,415 INFO L87 Difference]: Start difference. First operand 7506 states and 9984 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 4 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 07:08:56,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:09:01,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:09:01,683 INFO L93 Difference]: Finished difference Result 22456 states and 29865 transitions. [2024-12-02 07:09:01,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:09:01,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 4 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 197 [2024-12-02 07:09:01,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:09:01,745 INFO L225 Difference]: With dead ends: 22456 [2024-12-02 07:09:01,781 INFO L226 Difference]: Without dead ends: 22448 [2024-12-02 07:09:01,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:09:01,786 INFO L435 NwaCegarLoop]: 1454 mSDtfsCounter, 2579 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 187 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2579 SdHoareTripleChecker+Valid, 3326 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:09:01,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2579 Valid, 3326 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 328 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2024-12-02 07:09:01,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22448 states. [2024-12-02 07:09:02,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22448 to 22414. [2024-12-02 07:09:02,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22414 states, 17101 states have (on average 1.3055961639670195) internal successors, (22327), 17405 states have internal predecessors, (22327), 3733 states have call successors, (3733), 1580 states have call predecessors, (3733), 1579 states have return successors, (3762), 3680 states have call predecessors, (3762), 3732 states have call successors, (3762) [2024-12-02 07:09:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22414 states to 22414 states and 29822 transitions. [2024-12-02 07:09:02,647 INFO L78 Accepts]: Start accepts. Automaton has 22414 states and 29822 transitions. Word has length 197 [2024-12-02 07:09:02,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:09:02,647 INFO L471 AbstractCegarLoop]: Abstraction has 22414 states and 29822 transitions. [2024-12-02 07:09:02,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 4 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 07:09:02,648 INFO L276 IsEmpty]: Start isEmpty. Operand 22414 states and 29822 transitions. [2024-12-02 07:09:02,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-12-02 07:09:02,661 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:09:02,661 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:09:02,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:09:02,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 07:09:02,862 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:09:02,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:09:02,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1556665659, now seen corresponding path program 1 times [2024-12-02 07:09:02,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:09:02,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365428669] [2024-12-02 07:09:02,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:02,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:09:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:05,885 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2024-12-02 07:09:05,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:09:05,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365428669] [2024-12-02 07:09:05,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365428669] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:09:05,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911598077] [2024-12-02 07:09:05,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:05,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:09:05,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:09:05,888 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:09:05,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:09:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:09,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 3019 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:09:09,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:09:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2024-12-02 07:09:11,359 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:09:11,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911598077] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:09:11,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:09:11,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 07:09:11,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223808244] [2024-12-02 07:09:11,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:09:11,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:09:11,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:09:11,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:09:11,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:09:11,361 INFO L87 Difference]: Start difference. First operand 22414 states and 29822 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 07:09:15,397 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 [] [2024-12-02 07:09:16,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:09:16,199 INFO L93 Difference]: Finished difference Result 34233 states and 45562 transitions. [2024-12-02 07:09:16,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:09:16,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 207 [2024-12-02 07:09:16,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:09:16,235 INFO L225 Difference]: With dead ends: 34233 [2024-12-02 07:09:16,235 INFO L226 Difference]: Without dead ends: 11096 [2024-12-02 07:09:16,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:09:16,270 INFO L435 NwaCegarLoop]: 1421 mSDtfsCounter, 983 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:09:16,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 1802 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-12-02 07:09:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11096 states. [2024-12-02 07:09:16,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11096 to 11096. [2024-12-02 07:09:16,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11096 states, 8458 states have (on average 1.3032631827855286) internal successors, (11023), 8610 states have internal predecessors, (11023), 1855 states have call successors, (1855), 783 states have call predecessors, (1855), 782 states have return successors, (1869), 1828 states have call predecessors, (1869), 1854 states have call successors, (1869) [2024-12-02 07:09:16,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11096 states to 11096 states and 14747 transitions. [2024-12-02 07:09:16,880 INFO L78 Accepts]: Start accepts. Automaton has 11096 states and 14747 transitions. Word has length 207 [2024-12-02 07:09:16,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:09:16,881 INFO L471 AbstractCegarLoop]: Abstraction has 11096 states and 14747 transitions. [2024-12-02 07:09:16,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 07:09:16,881 INFO L276 IsEmpty]: Start isEmpty. Operand 11096 states and 14747 transitions. [2024-12-02 07:09:16,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-12-02 07:09:16,893 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:09:16,893 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:09:16,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:09:17,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 07:09:17,094 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:09:17,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:09:17,094 INFO L85 PathProgramCache]: Analyzing trace with hash -269636223, now seen corresponding path program 1 times [2024-12-02 07:09:17,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:09:17,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064840546] [2024-12-02 07:09:17,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:17,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:09:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:20,089 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 52 proven. 12 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-12-02 07:09:20,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:09:20,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064840546] [2024-12-02 07:09:20,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064840546] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:09:20,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495331816] [2024-12-02 07:09:20,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:20,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:09:20,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:09:20,092 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:09:20,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:09:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:23,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:09:23,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:09:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2024-12-02 07:09:23,830 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:09:23,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495331816] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:09:23,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:09:23,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 07:09:23,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339476896] [2024-12-02 07:09:23,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:09:23,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:09:23,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:09:23,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:09:23,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:09:23,832 INFO L87 Difference]: Start difference. First operand 11096 states and 14747 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:09:27,863 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 [] [2024-12-02 07:09:28,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:09:28,823 INFO L93 Difference]: Finished difference Result 20576 states and 27387 transitions. [2024-12-02 07:09:28,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:09:28,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 211 [2024-12-02 07:09:28,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:09:28,860 INFO L225 Difference]: With dead ends: 20576 [2024-12-02 07:09:28,860 INFO L226 Difference]: Without dead ends: 10349 [2024-12-02 07:09:28,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:09:28,880 INFO L435 NwaCegarLoop]: 1518 mSDtfsCounter, 910 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:09:28,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 2411 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-12-02 07:09:28,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10349 states. [2024-12-02 07:09:29,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10349 to 10341. [2024-12-02 07:09:29,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10341 states, 7892 states have (on average 1.3023314749113026) internal successors, (10278), 8037 states have internal predecessors, (10278), 1723 states have call successors, (1723), 726 states have call predecessors, (1723), 725 states have return successors, (1737), 1697 states have call predecessors, (1737), 1722 states have call successors, (1737) [2024-12-02 07:09:29,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10341 states to 10341 states and 13738 transitions. [2024-12-02 07:09:29,444 INFO L78 Accepts]: Start accepts. Automaton has 10341 states and 13738 transitions. Word has length 211 [2024-12-02 07:09:29,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:09:29,445 INFO L471 AbstractCegarLoop]: Abstraction has 10341 states and 13738 transitions. [2024-12-02 07:09:29,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:09:29,445 INFO L276 IsEmpty]: Start isEmpty. Operand 10341 states and 13738 transitions. [2024-12-02 07:09:29,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-12-02 07:09:29,459 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:09:29,459 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:09:29,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:09:29,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 07:09:29,660 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:09:29,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:09:29,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1114678640, now seen corresponding path program 1 times [2024-12-02 07:09:29,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:09:29,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262486537] [2024-12-02 07:09:29,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:29,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:09:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:32,539 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2024-12-02 07:09:32,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:09:32,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262486537] [2024-12-02 07:09:32,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262486537] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:09:32,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990696883] [2024-12-02 07:09:32,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:32,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:09:32,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:09:32,542 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:09:32,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:09:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:36,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 3117 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:09:36,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:09:38,094 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2024-12-02 07:09:38,094 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:09:38,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990696883] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:09:38,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:09:38,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 07:09:38,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449009208] [2024-12-02 07:09:38,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:09:38,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:09:38,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:09:38,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:09:38,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:09:38,097 INFO L87 Difference]: Start difference. First operand 10341 states and 13738 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-12-02 07:09:38,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:09:38,649 INFO L93 Difference]: Finished difference Result 25272 states and 33570 transitions. [2024-12-02 07:09:38,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:09:38,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 233 [2024-12-02 07:09:38,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:09:38,686 INFO L225 Difference]: With dead ends: 25272 [2024-12-02 07:09:38,686 INFO L226 Difference]: Without dead ends: 14967 [2024-12-02 07:09:38,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:09:38,704 INFO L435 NwaCegarLoop]: 1716 mSDtfsCounter, 1018 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:09:38,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 2611 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:09:38,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14967 states. [2024-12-02 07:09:39,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14967 to 14496. [2024-12-02 07:09:39,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14496 states, 11198 states have (on average 1.3144311484193607) internal successors, (14719), 11405 states have internal predecessors, (14719), 2254 states have call successors, (2254), 1044 states have call predecessors, (2254), 1043 states have return successors, (2278), 2221 states have call predecessors, (2278), 2253 states have call successors, (2278) [2024-12-02 07:09:39,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14496 states to 14496 states and 19251 transitions. [2024-12-02 07:09:39,471 INFO L78 Accepts]: Start accepts. Automaton has 14496 states and 19251 transitions. Word has length 233 [2024-12-02 07:09:39,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:09:39,472 INFO L471 AbstractCegarLoop]: Abstraction has 14496 states and 19251 transitions. [2024-12-02 07:09:39,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-12-02 07:09:39,472 INFO L276 IsEmpty]: Start isEmpty. Operand 14496 states and 19251 transitions. [2024-12-02 07:09:39,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-12-02 07:09:39,485 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:09:39,485 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:09:39,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 07:09:39,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 07:09:39,686 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:09:39,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:09:39,686 INFO L85 PathProgramCache]: Analyzing trace with hash -648248931, now seen corresponding path program 1 times [2024-12-02 07:09:39,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:09:39,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170776147] [2024-12-02 07:09:39,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:39,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:09:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:43,139 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 80 proven. 12 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-12-02 07:09:43,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:09:43,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170776147] [2024-12-02 07:09:43,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170776147] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:09:43,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469285893] [2024-12-02 07:09:43,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:43,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:09:43,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:09:43,142 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:09:43,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 07:09:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:46,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 3102 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:09:46,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:09:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2024-12-02 07:09:47,136 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:09:47,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469285893] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:09:47,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:09:47,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-12-02 07:09:47,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352343968] [2024-12-02 07:09:47,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:09:47,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:09:47,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:09:47,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:09:47,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:09:47,138 INFO L87 Difference]: Start difference. First operand 14496 states and 19251 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 07:09:47,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:09:47,743 INFO L93 Difference]: Finished difference Result 28634 states and 38038 transitions. [2024-12-02 07:09:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:09:47,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 239 [2024-12-02 07:09:47,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:09:47,774 INFO L225 Difference]: With dead ends: 28634 [2024-12-02 07:09:47,774 INFO L226 Difference]: Without dead ends: 14516 [2024-12-02 07:09:47,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:09:47,790 INFO L435 NwaCegarLoop]: 1112 mSDtfsCounter, 0 mSDsluCounter, 2218 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3330 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:09:47,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3330 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:09:47,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14516 states. [2024-12-02 07:09:48,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14516 to 14516. [2024-12-02 07:09:48,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14516 states, 11218 states have (on average 1.3138705651631306) internal successors, (14739), 11425 states have internal predecessors, (14739), 2254 states have call successors, (2254), 1044 states have call predecessors, (2254), 1043 states have return successors, (2278), 2221 states have call predecessors, (2278), 2253 states have call successors, (2278) [2024-12-02 07:09:48,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14516 states to 14516 states and 19271 transitions. [2024-12-02 07:09:48,283 INFO L78 Accepts]: Start accepts. Automaton has 14516 states and 19271 transitions. Word has length 239 [2024-12-02 07:09:48,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:09:48,283 INFO L471 AbstractCegarLoop]: Abstraction has 14516 states and 19271 transitions. [2024-12-02 07:09:48,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 07:09:48,283 INFO L276 IsEmpty]: Start isEmpty. Operand 14516 states and 19271 transitions. [2024-12-02 07:09:48,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-12-02 07:09:48,290 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:09:48,290 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:09:48,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 07:09:48,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 07:09:48,490 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:09:48,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:09:48,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1840315716, now seen corresponding path program 1 times [2024-12-02 07:09:48,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:09:48,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468903480] [2024-12-02 07:09:48,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:48,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:09:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:51,361 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-12-02 07:09:51,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:09:51,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468903480] [2024-12-02 07:09:51,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468903480] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:09:51,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:09:51,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:09:51,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160586663] [2024-12-02 07:09:51,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:09:51,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:09:51,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:09:51,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:09:51,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:09:51,362 INFO L87 Difference]: Start difference. First operand 14516 states and 19271 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 07:09:51,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:09:51,852 INFO L93 Difference]: Finished difference Result 28674 states and 38078 transitions. [2024-12-02 07:09:51,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:09:51,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 242 [2024-12-02 07:09:51,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:09:51,892 INFO L225 Difference]: With dead ends: 28674 [2024-12-02 07:09:51,892 INFO L226 Difference]: Without dead ends: 14536 [2024-12-02 07:09:51,915 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 [2024-12-02 07:09:51,916 INFO L435 NwaCegarLoop]: 1112 mSDtfsCounter, 1 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:09:51,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2220 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:09:51,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14536 states. [2024-12-02 07:09:52,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14536 to 14526. [2024-12-02 07:09:52,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14526 states, 11228 states have (on average 1.3135910224438903) internal successors, (14749), 11435 states have internal predecessors, (14749), 2254 states have call successors, (2254), 1044 states have call predecessors, (2254), 1043 states have return successors, (2278), 2221 states have call predecessors, (2278), 2253 states have call successors, (2278) [2024-12-02 07:09:52,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14526 states to 14526 states and 19281 transitions. [2024-12-02 07:09:52,476 INFO L78 Accepts]: Start accepts. Automaton has 14526 states and 19281 transitions. Word has length 242 [2024-12-02 07:09:52,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:09:52,476 INFO L471 AbstractCegarLoop]: Abstraction has 14526 states and 19281 transitions. [2024-12-02 07:09:52,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 07:09:52,477 INFO L276 IsEmpty]: Start isEmpty. Operand 14526 states and 19281 transitions. [2024-12-02 07:09:52,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-12-02 07:09:52,483 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:09:52,483 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:09:52,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 07:09:52,483 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:09:52,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:09:52,483 INFO L85 PathProgramCache]: Analyzing trace with hash 2098683896, now seen corresponding path program 1 times [2024-12-02 07:09:52,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:09:52,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92287397] [2024-12-02 07:09:52,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:52,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:09:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-12-02 07:09:55,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:09:55,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92287397] [2024-12-02 07:09:55,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92287397] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:09:55,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580479335] [2024-12-02 07:09:55,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:55,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:09:55,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:09:55,094 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:09:55,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 07:09:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:59,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 3201 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:09:59,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:09:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-12-02 07:09:59,485 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:09:59,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580479335] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:09:59,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:09:59,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-12-02 07:09:59,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191808575] [2024-12-02 07:09:59,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:09:59,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:09:59,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:09:59,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:09:59,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:09:59,487 INFO L87 Difference]: Start difference. First operand 14526 states and 19281 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-12-02 07:10:00,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:10:00,034 INFO L93 Difference]: Finished difference Result 28704 states and 38128 transitions. [2024-12-02 07:10:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:10:00,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 244 [2024-12-02 07:10:00,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:10:00,072 INFO L225 Difference]: With dead ends: 28704 [2024-12-02 07:10:00,072 INFO L226 Difference]: Without dead ends: 14556 [2024-12-02 07:10:00,093 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:10:00,094 INFO L435 NwaCegarLoop]: 1109 mSDtfsCounter, 26 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:10:00,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2171 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:10:00,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14556 states. [2024-12-02 07:10:00,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14556 to 14556. [2024-12-02 07:10:00,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14556 states, 11258 states have (on average 1.3136436311955944) internal successors, (14789), 11465 states have internal predecessors, (14789), 2254 states have call successors, (2254), 1044 states have call predecessors, (2254), 1043 states have return successors, (2278), 2221 states have call predecessors, (2278), 2253 states have call successors, (2278) [2024-12-02 07:10:00,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14556 states to 14556 states and 19321 transitions. [2024-12-02 07:10:00,685 INFO L78 Accepts]: Start accepts. Automaton has 14556 states and 19321 transitions. Word has length 244 [2024-12-02 07:10:00,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:10:00,686 INFO L471 AbstractCegarLoop]: Abstraction has 14556 states and 19321 transitions. [2024-12-02 07:10:00,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-12-02 07:10:00,686 INFO L276 IsEmpty]: Start isEmpty. Operand 14556 states and 19321 transitions. [2024-12-02 07:10:00,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-12-02 07:10:00,692 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:10:00,692 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:10:00,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 07:10:00,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 07:10:00,893 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:10:00,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:10:00,893 INFO L85 PathProgramCache]: Analyzing trace with hash 152483126, now seen corresponding path program 1 times [2024-12-02 07:10:00,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:10:00,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902811307] [2024-12-02 07:10:00,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:10:00,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:10:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:10:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-12-02 07:10:03,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:10:03,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902811307] [2024-12-02 07:10:03,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902811307] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:10:03,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366075690] [2024-12-02 07:10:03,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:10:03,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:03,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:10:03,811 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:10:03,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 07:10:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:10:07,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 3222 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:10:07,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:10:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-12-02 07:10:07,882 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:10:07,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366075690] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:10:07,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:10:07,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-12-02 07:10:07,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603372251] [2024-12-02 07:10:07,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:10:07,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:10:07,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:10:07,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:10:07,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:10:07,884 INFO L87 Difference]: Start difference. First operand 14556 states and 19321 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 07:10:08,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:10:08,465 INFO L93 Difference]: Finished difference Result 28774 states and 38218 transitions. [2024-12-02 07:10:08,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:10:08,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 247 [2024-12-02 07:10:08,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:10:08,509 INFO L225 Difference]: With dead ends: 28774 [2024-12-02 07:10:08,509 INFO L226 Difference]: Without dead ends: 14596 [2024-12-02 07:10:08,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:10:08,531 INFO L435 NwaCegarLoop]: 1110 mSDtfsCounter, 3 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:10:08,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2207 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:10:08,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14596 states. [2024-12-02 07:10:09,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14596 to 14576. [2024-12-02 07:10:09,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14576 states, 11278 states have (on average 1.313974108884554) internal successors, (14819), 11485 states have internal predecessors, (14819), 2254 states have call successors, (2254), 1044 states have call predecessors, (2254), 1043 states have return successors, (2278), 2221 states have call predecessors, (2278), 2253 states have call successors, (2278) [2024-12-02 07:10:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14576 states to 14576 states and 19351 transitions. [2024-12-02 07:10:09,075 INFO L78 Accepts]: Start accepts. Automaton has 14576 states and 19351 transitions. Word has length 247 [2024-12-02 07:10:09,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:10:09,075 INFO L471 AbstractCegarLoop]: Abstraction has 14576 states and 19351 transitions. [2024-12-02 07:10:09,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 07:10:09,075 INFO L276 IsEmpty]: Start isEmpty. Operand 14576 states and 19351 transitions. [2024-12-02 07:10:09,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-12-02 07:10:09,085 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:10:09,085 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:10:09,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 07:10:09,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 07:10:09,286 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:10:09,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:10:09,287 INFO L85 PathProgramCache]: Analyzing trace with hash -328597132, now seen corresponding path program 1 times [2024-12-02 07:10:09,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:10:09,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872089007] [2024-12-02 07:10:09,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:10:09,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:10:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:10:12,044 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-12-02 07:10:12,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:10:12,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872089007] [2024-12-02 07:10:12,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872089007] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:10:12,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979042621] [2024-12-02 07:10:12,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:10:12,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:12,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:10:12,046 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:10:12,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 07:10:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:10:16,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 3235 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:10:16,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:10:16,313 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-12-02 07:10:16,313 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:10:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-12-02 07:10:17,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979042621] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:10:17,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:10:17,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-12-02 07:10:17,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357731209] [2024-12-02 07:10:17,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:10:17,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:10:17,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:10:17,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:10:17,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:10:17,652 INFO L87 Difference]: Start difference. First operand 14576 states and 19351 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-12-02 07:10:18,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:10:18,299 INFO L93 Difference]: Finished difference Result 28834 states and 38298 transitions. [2024-12-02 07:10:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:10:18,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 247 [2024-12-02 07:10:18,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:10:18,336 INFO L225 Difference]: With dead ends: 28834 [2024-12-02 07:10:18,336 INFO L226 Difference]: Without dead ends: 14636 [2024-12-02 07:10:18,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:10:18,356 INFO L435 NwaCegarLoop]: 1112 mSDtfsCounter, 2 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:10:18,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3328 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:10:18,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14636 states. [2024-12-02 07:10:18,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14636 to 14636. [2024-12-02 07:10:18,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14636 states, 11338 states have (on average 1.3123125771741049) internal successors, (14879), 11545 states have internal predecessors, (14879), 2254 states have call successors, (2254), 1044 states have call predecessors, (2254), 1043 states have return successors, (2278), 2221 states have call predecessors, (2278), 2253 states have call successors, (2278) [2024-12-02 07:10:18,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14636 states to 14636 states and 19411 transitions. [2024-12-02 07:10:18,865 INFO L78 Accepts]: Start accepts. Automaton has 14636 states and 19411 transitions. Word has length 247 [2024-12-02 07:10:18,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:10:18,866 INFO L471 AbstractCegarLoop]: Abstraction has 14636 states and 19411 transitions. [2024-12-02 07:10:18,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-12-02 07:10:18,866 INFO L276 IsEmpty]: Start isEmpty. Operand 14636 states and 19411 transitions. [2024-12-02 07:10:18,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-12-02 07:10:18,876 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:10:18,876 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:10:18,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 07:10:19,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 07:10:19,077 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:10:19,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:10:19,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1077851619, now seen corresponding path program 1 times [2024-12-02 07:10:19,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:10:19,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828343116] [2024-12-02 07:10:19,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:10:19,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:10:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:10:22,377 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2024-12-02 07:10:22,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:10:22,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828343116] [2024-12-02 07:10:22,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828343116] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:10:22,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180868935] [2024-12-02 07:10:22,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:10:22,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:22,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:10:22,379 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:10:22,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 07:10:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:10:26,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 3126 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 07:10:26,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:10:26,846 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-12-02 07:10:26,846 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:10:26,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180868935] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:10:26,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:10:26,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-12-02 07:10:26,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312298334] [2024-12-02 07:10:26,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:10:26,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:10:26,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:10:26,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:10:26,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:10:26,848 INFO L87 Difference]: Start difference. First operand 14636 states and 19411 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 07:10:30,883 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 [] [2024-12-02 07:10:32,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:10:32,189 INFO L93 Difference]: Finished difference Result 36740 states and 48684 transitions. [2024-12-02 07:10:32,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:10:32,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 249 [2024-12-02 07:10:32,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:10:32,243 INFO L225 Difference]: With dead ends: 36740 [2024-12-02 07:10:32,243 INFO L226 Difference]: Without dead ends: 22482 [2024-12-02 07:10:32,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:10:32,265 INFO L435 NwaCegarLoop]: 1950 mSDtfsCounter, 847 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 5002 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:10:32,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 5002 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-12-02 07:10:32,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22482 states. [2024-12-02 07:10:32,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22482 to 19354. [2024-12-02 07:10:32,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19354 states, 15036 states have (on average 1.3131151902101623) internal successors, (19744), 15304 states have internal predecessors, (19744), 2944 states have call successors, (2944), 1374 states have call predecessors, (2944), 1373 states have return successors, (2974), 2897 states have call predecessors, (2974), 2943 states have call successors, (2974) [2024-12-02 07:10:32,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19354 states to 19354 states and 25662 transitions. [2024-12-02 07:10:32,982 INFO L78 Accepts]: Start accepts. Automaton has 19354 states and 25662 transitions. Word has length 249 [2024-12-02 07:10:32,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:10:32,982 INFO L471 AbstractCegarLoop]: Abstraction has 19354 states and 25662 transitions. [2024-12-02 07:10:32,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 07:10:32,982 INFO L276 IsEmpty]: Start isEmpty. Operand 19354 states and 25662 transitions. [2024-12-02 07:10:32,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-12-02 07:10:32,990 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:10:32,990 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:10:33,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 07:10:33,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:33,191 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:10:33,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:10:33,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1200150336, now seen corresponding path program 2 times [2024-12-02 07:10:33,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:10:33,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56583222] [2024-12-02 07:10:33,191 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:10:33,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:10:35,694 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 07:10:35,694 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:10:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-12-02 07:10:36,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:10:36,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56583222] [2024-12-02 07:10:36,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56583222] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:10:36,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644898788] [2024-12-02 07:10:36,535 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:10:36,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:36,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:10:36,537 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:10:36,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7b6a6-95a1-41c0-99e6-80cf31dee85d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process