./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/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_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/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_870d2949-7ae6-40db-8c51-466d3c351759/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 230b725329634d718374ec3f6d82161758e5d9913588383fdc3e35a9fd1533f5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:42:18,261 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:42:18,319 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 10:42:18,324 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:42:18,324 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:42:18,347 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:42:18,348 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:42:18,348 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:42:18,348 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:42:18,348 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:42:18,348 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:42:18,348 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:42:18,349 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:42:18,349 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:42:18,349 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:42:18,349 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:42:18,349 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:42:18,349 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:42:18,349 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:42:18,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:42:18,350 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:42:18,350 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:42:18,350 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:42:18,350 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:42:18,350 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:42:18,350 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:42:18,350 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:42:18,350 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:42:18,350 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:42:18,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:42:18,351 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:42:18,351 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:42:18,351 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:42:18,351 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:42:18,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:42:18,351 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:42:18,351 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:42:18,351 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:42:18,351 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:42:18,351 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:42:18,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:42:18,351 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:42:18,351 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:42:18,352 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:42:18,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:42:18,352 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_870d2949-7ae6-40db-8c51-466d3c351759/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 -> 230b725329634d718374ec3f6d82161758e5d9913588383fdc3e35a9fd1533f5 [2024-12-02 10:42:18,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:42:18,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:42:18,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:42:18,599 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:42:18,600 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:42:18,601 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2024-12-02 10:42:21,235 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/data/9e8aeb2bf/c5e5b8e4c0f1430ba4b8b6817f374522/FLAGcf470bc66 [2024-12-02 10:42:21,644 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:42:21,645 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2024-12-02 10:42:21,677 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/data/9e8aeb2bf/c5e5b8e4c0f1430ba4b8b6817f374522/FLAGcf470bc66 [2024-12-02 10:42:21,692 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/data/9e8aeb2bf/c5e5b8e4c0f1430ba4b8b6817f374522 [2024-12-02 10:42:21,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:42:21,696 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:42:21,697 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:42:21,697 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:42:21,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:42:21,702 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:42:21" (1/1) ... [2024-12-02 10:42:21,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67496c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:42:21, skipping insertion in model container [2024-12-02 10:42:21,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:42:21" (1/1) ... [2024-12-02 10:42:21,767 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:42:22,547 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_870d2949-7ae6-40db-8c51-466d3c351759/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i[164687,164700] [2024-12-02 10:42:22,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:42:22,603 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:42:22,715 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; subl %2, %0; sete %1": "+m" (v->counter), "=qm" (c): "er" (i): "memory"); [4273-4274] [2024-12-02 10:42:22,717 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddb %b0, %1\n": "+q" (__ret), "+m" (v->counter): : "memory", "cc"); [4285-4286] [2024-12-02 10:42:22,718 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddw %w0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [4289-4290] [2024-12-02 10:42:22,718 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddl %0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [4293-4294] [2024-12-02 10:42:22,718 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddq %q0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [4297-4298] [2024-12-02 10:42:22,792 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_870d2949-7ae6-40db-8c51-466d3c351759/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i[164687,164700] [2024-12-02 10:42:22,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:42:22,827 WARN L1212 FunctionHandler]: The following functions are not defined or handled internally: __xadd_wrong_size [2024-12-02 10:42:22,834 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:42:22,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:42:22 WrapperNode [2024-12-02 10:42:22,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:42:22,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:42:22,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:42:22,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:42:22,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:42:22" (1/1) ... [2024-12-02 10:42:22,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:42:22" (1/1) ... [2024-12-02 10:42:22,963 INFO L138 Inliner]: procedures = 147, calls = 882, calls flagged for inlining = 62, calls inlined = 60, statements flattened = 2112 [2024-12-02 10:42:22,963 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:42:22,964 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:42:22,964 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:42:22,964 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:42:22,971 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:42:22" (1/1) ... [2024-12-02 10:42:22,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:42:22" (1/1) ... [2024-12-02 10:42:22,983 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:42:22" (1/1) ... [2024-12-02 10:42:23,161 INFO L175 MemorySlicer]: Split 543 memory accesses to 16 slices as follows [2, 5, 2, 3, 8, 16, 182, 4, 3, 2, 56, 218, 12, 14, 14, 2]. 40 percent of accesses are in the largest equivalence class. The 258 initializations are split as follows [2, 5, 0, 3, 0, 16, 182, 3, 2, 0, 0, 17, 0, 14, 14, 0]. The 146 writes are split as follows [0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 51, 81, 12, 0, 0, 0]. [2024-12-02 10:42:23,161 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:42:22" (1/1) ... [2024-12-02 10:42:23,162 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:42:22" (1/1) ... [2024-12-02 10:42:23,223 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:42:22" (1/1) ... [2024-12-02 10:42:23,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:42:22" (1/1) ... [2024-12-02 10:42:23,240 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:42:22" (1/1) ... [2024-12-02 10:42:23,255 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:42:22" (1/1) ... [2024-12-02 10:42:23,263 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:42:22" (1/1) ... [2024-12-02 10:42:23,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:42:23,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:42:23,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:42:23,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:42:23,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:42:22" (1/1) ... [2024-12-02 10:42:23,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:42:23,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:42:23,311 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:42:23,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:42:23,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 10:42:23,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 10:42:23,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 10:42:23,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 10:42:23,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 10:42:23,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 10:42:23,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-12-02 10:42:23,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-12-02 10:42:23,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-12-02 10:42:23,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-12-02 10:42:23,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2024-12-02 10:42:23,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2024-12-02 10:42:23,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2024-12-02 10:42:23,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#13 [2024-12-02 10:42:23,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#14 [2024-12-02 10:42:23,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#15 [2024-12-02 10:42:23,334 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2024-12-02 10:42:23,334 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2024-12-02 10:42:23,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2024-12-02 10:42:23,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2024-12-02 10:42:23,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2024-12-02 10:42:23,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2024-12-02 10:42:23,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2024-12-02 10:42:23,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2024-12-02 10:42:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2024-12-02 10:42:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#7 [2024-12-02 10:42:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#8 [2024-12-02 10:42:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#9 [2024-12-02 10:42:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#10 [2024-12-02 10:42:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#11 [2024-12-02 10:42:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#12 [2024-12-02 10:42:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#13 [2024-12-02 10:42:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#14 [2024-12-02 10:42:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#15 [2024-12-02 10:42:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 10:42:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 10:42:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 10:42:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 10:42:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 10:42:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 10:42:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-12-02 10:42:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-12-02 10:42:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-12-02 10:42:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-12-02 10:42:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2024-12-02 10:42:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#11 [2024-12-02 10:42:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#12 [2024-12-02 10:42:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#13 [2024-12-02 10:42:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#14 [2024-12-02 10:42:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#15 [2024-12-02 10:42:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-12-02 10:42:23,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-12-02 10:42:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 10:42:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 10:42:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 10:42:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 10:42:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 10:42:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 10:42:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 10:42:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 10:42:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-12-02 10:42:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-12-02 10:42:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-12-02 10:42:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-12-02 10:42:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-12-02 10:42:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-12-02 10:42:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-12-02 10:42:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-12-02 10:42:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-12-02 10:42:23,337 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-12-02 10:42:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2024-12-02 10:42:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2024-12-02 10:42:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2024-12-02 10:42:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2024-12-02 10:42:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2024-12-02 10:42:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2024-12-02 10:42:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2024-12-02 10:42:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#7 [2024-12-02 10:42:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#8 [2024-12-02 10:42:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#9 [2024-12-02 10:42:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#10 [2024-12-02 10:42:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#11 [2024-12-02 10:42:23,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#12 [2024-12-02 10:42:23,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#13 [2024-12-02 10:42:23,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#14 [2024-12-02 10:42:23,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#15 [2024-12-02 10:42:23,339 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2024-12-02 10:42:23,339 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2024-12-02 10:42:23,339 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2024-12-02 10:42:23,339 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2024-12-02 10:42:23,339 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2024-12-02 10:42:23,339 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2024-12-02 10:42:23,339 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2024-12-02 10:42:23,339 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#7 [2024-12-02 10:42:23,339 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#8 [2024-12-02 10:42:23,339 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#9 [2024-12-02 10:42:23,340 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#10 [2024-12-02 10:42:23,340 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#11 [2024-12-02 10:42:23,340 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#12 [2024-12-02 10:42:23,340 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#13 [2024-12-02 10:42:23,340 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#14 [2024-12-02 10:42:23,340 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#15 [2024-12-02 10:42:23,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-12-02 10:42:23,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-12-02 10:42:23,340 INFO L130 BoogieDeclarations]: Found specification of procedure get_rdac_data [2024-12-02 10:42:23,340 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rdac_data [2024-12-02 10:42:23,340 INFO L130 BoogieDeclarations]: Found specification of procedure blk_put_request [2024-12-02 10:42:23,340 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_put_request [2024-12-02 10:42:23,340 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2024-12-02 10:42:23,341 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2024-12-02 10:42:23,341 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-12-02 10:42:23,341 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-12-02 10:42:23,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 10:42:23,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 10:42:23,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 10:42:23,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 10:42:23,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 10:42:23,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 10:42:23,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 10:42:23,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-12-02 10:42:23,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-12-02 10:42:23,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-12-02 10:42:23,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-12-02 10:42:23,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-12-02 10:42:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-12-02 10:42:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-12-02 10:42:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-12-02 10:42:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-12-02 10:42:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-12-02 10:42:23,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-12-02 10:42:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure send_mode_select [2024-12-02 10:42:23,342 INFO L138 BoogieDeclarations]: Found implementation of procedure send_mode_select [2024-12-02 10:42:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2024-12-02 10:42:23,342 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2024-12-02 10:42:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-12-02 10:42:23,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-12-02 10:42:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-12-02 10:42:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-12-02 10:42:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-12-02 10:42:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2024-12-02 10:42:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2024-12-02 10:42:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#5 [2024-12-02 10:42:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#6 [2024-12-02 10:42:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#7 [2024-12-02 10:42:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#8 [2024-12-02 10:42:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#9 [2024-12-02 10:42:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#10 [2024-12-02 10:42:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#11 [2024-12-02 10:42:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#12 [2024-12-02 10:42:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#13 [2024-12-02 10:42:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#14 [2024-12-02 10:42:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#15 [2024-12-02 10:42:23,343 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-12-02 10:42:23,343 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-12-02 10:42:23,343 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-12-02 10:42:23,344 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2024-12-02 10:42:23,344 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2024-12-02 10:42:23,344 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#5 [2024-12-02 10:42:23,344 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#6 [2024-12-02 10:42:23,344 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#7 [2024-12-02 10:42:23,344 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#8 [2024-12-02 10:42:23,344 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#9 [2024-12-02 10:42:23,344 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#10 [2024-12-02 10:42:23,344 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#11 [2024-12-02 10:42:23,344 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#12 [2024-12-02 10:42:23,344 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#13 [2024-12-02 10:42:23,344 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#14 [2024-12-02 10:42:23,344 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#15 [2024-12-02 10:42:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-12-02 10:42:23,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-12-02 10:42:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 10:42:23,345 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 10:42:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 10:42:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2024-12-02 10:42:23,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2024-12-02 10:42:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_unregister_device_handler [2024-12-02 10:42:23,345 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_unregister_device_handler [2024-12-02 10:42:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2024-12-02 10:42:23,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2024-12-02 10:42:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2024-12-02 10:42:23,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2024-12-02 10:42:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:42:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure submit_inquiry [2024-12-02 10:42:23,345 INFO L138 BoogieDeclarations]: Found implementation of procedure submit_inquiry [2024-12-02 10:42:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_bus_detach [2024-12-02 10:42:23,345 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_bus_detach [2024-12-02 10:42:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 10:42:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 10:42:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 10:42:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 10:42:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 10:42:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 10:42:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 10:42:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 10:42:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-12-02 10:42:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-12-02 10:42:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-12-02 10:42:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-12-02 10:42:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-12-02 10:42:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-12-02 10:42:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-12-02 10:42:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-12-02 10:42:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2024-12-02 10:42:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_match [2024-12-02 10:42:23,347 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_match [2024-12-02 10:42:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2024-12-02 10:42:23,347 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2024-12-02 10:42:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure blk_execute_rq [2024-12-02 10:42:23,347 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_execute_rq [2024-12-02 10:42:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-12-02 10:42:23,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-12-02 10:42:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure sdev_prefix_printk [2024-12-02 10:42:23,347 INFO L138 BoogieDeclarations]: Found implementation of procedure sdev_prefix_printk [2024-12-02 10:42:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 10:42:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 10:42:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 10:42:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 10:42:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 10:42:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 10:42:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 10:42:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-12-02 10:42:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-12-02 10:42:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-12-02 10:42:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-12-02 10:42:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-12-02 10:42:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-12-02 10:42:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-12-02 10:42:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-12-02 10:42:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2024-12-02 10:42:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2024-12-02 10:42:23,348 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2024-12-02 10:42:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2024-12-02 10:42:23,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2024-12-02 10:42:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure check_ownership [2024-12-02 10:42:23,349 INFO L138 BoogieDeclarations]: Found implementation of procedure check_ownership [2024-12-02 10:42:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2024-12-02 10:42:23,349 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2024-12-02 10:42:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 10:42:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 10:42:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 10:42:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 10:42:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 10:42:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 10:42:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-12-02 10:42:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-12-02 10:42:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-12-02 10:42:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-12-02 10:42:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-12-02 10:42:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-12-02 10:42:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-12-02 10:42:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-12-02 10:42:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-12-02 10:42:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-12-02 10:42:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2024-12-02 10:42:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure get_rdac_req [2024-12-02 10:42:23,350 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rdac_req [2024-12-02 10:42:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-12-02 10:42:23,350 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-12-02 10:42:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2024-12-02 10:42:23,350 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2024-12-02 10:42:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2024-12-02 10:42:23,350 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2024-12-02 10:42:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2024-12-02 10:42:23,350 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2024-12-02 10:42:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2024-12-02 10:42:23,350 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2024-12-02 10:42:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2024-12-02 10:42:23,351 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2024-12-02 10:42:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2024-12-02 10:42:23,351 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2024-12-02 10:42:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:42:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 10:42:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 10:42:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 10:42:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 10:42:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 10:42:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 10:42:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 10:42:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 10:42:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 10:42:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 10:42:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 10:42:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 10:42:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 10:42:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 10:42:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 10:42:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2024-12-02 10:42:23,352 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2024-12-02 10:42:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2024-12-02 10:42:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2024-12-02 10:42:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2024-12-02 10:42:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2024-12-02 10:42:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2024-12-02 10:42:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2024-12-02 10:42:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2024-12-02 10:42:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#7 [2024-12-02 10:42:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#8 [2024-12-02 10:42:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#9 [2024-12-02 10:42:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#10 [2024-12-02 10:42:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#11 [2024-12-02 10:42:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#12 [2024-12-02 10:42:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#13 [2024-12-02 10:42:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#14 [2024-12-02 10:42:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#15 [2024-12-02 10:42:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:42:23,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:42:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2024-12-02 10:42:23,353 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2024-12-02 10:42:23,865 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:42:23,868 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:42:24,303 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-12-02 10:42:30,661 INFO L? ?]: Removed 1138 outVars from TransFormulas that were not future-live. [2024-12-02 10:42:30,662 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:42:30,685 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:42:30,685 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 10:42:30,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:42:30 BoogieIcfgContainer [2024-12-02 10:42:30,686 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:42:30,689 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:42:30,689 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:42:30,693 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:42:30,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:42:21" (1/3) ... [2024-12-02 10:42:30,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb0a89c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:42:30, skipping insertion in model container [2024-12-02 10:42:30,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:42:22" (2/3) ... [2024-12-02 10:42:30,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb0a89c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:42:30, skipping insertion in model container [2024-12-02 10:42:30,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:42:30" (3/3) ... [2024-12-02 10:42:30,696 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2024-12-02 10:42:30,710 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:42:30,711 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i that has 72 procedures, 767 locations, 1 initial locations, 49 loop locations, and 2 error locations. [2024-12-02 10:42:30,775 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:42:30,787 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;@11f7affe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:42:30,787 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 10:42:30,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 635 states, 466 states have (on average 1.388412017167382) internal successors, (647), 487 states have internal predecessors, (647), 125 states have call successors, (125), 42 states have call predecessors, (125), 41 states have return successors, (121), 120 states have call predecessors, (121), 121 states have call successors, (121) [2024-12-02 10:42:30,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-02 10:42:30,803 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:30,803 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:30,804 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:42:30,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:30,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1244678369, now seen corresponding path program 1 times [2024-12-02 10:42:30,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:30,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779111426] [2024-12-02 10:42:30,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:30,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:32,114 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 10:42:32,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:32,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779111426] [2024-12-02 10:42:32,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779111426] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:42:32,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519680329] [2024-12-02 10:42:32,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:32,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:32,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:42:32,117 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:42:32,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:42:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:33,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 10:42:33,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:42:33,292 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 10:42:33,292 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:42:33,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519680329] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:33,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:42:33,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 10:42:33,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876094216] [2024-12-02 10:42:33,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:33,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 10:42:33,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:33,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 10:42:33,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 10:42:33,314 INFO L87 Difference]: Start difference. First operand has 635 states, 466 states have (on average 1.388412017167382) internal successors, (647), 487 states have internal predecessors, (647), 125 states have call successors, (125), 42 states have call predecessors, (125), 41 states have return successors, (121), 120 states have call predecessors, (121), 121 states have call successors, (121) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 10:42:33,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:33,398 INFO L93 Difference]: Finished difference Result 1264 states and 1822 transitions. [2024-12-02 10:42:33,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 10:42:33,399 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2024-12-02 10:42:33,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:33,411 INFO L225 Difference]: With dead ends: 1264 [2024-12-02 10:42:33,412 INFO L226 Difference]: Without dead ends: 615 [2024-12-02 10:42:33,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 10:42:33,421 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:33,421 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:42:33,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-12-02 10:42:33,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2024-12-02 10:42:33,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 454 states have (on average 1.3722466960352422) internal successors, (623), 469 states have internal predecessors, (623), 119 states have call successors, (119), 41 states have call predecessors, (119), 40 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2024-12-02 10:42:33,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 860 transitions. [2024-12-02 10:42:33,490 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 860 transitions. Word has length 74 [2024-12-02 10:42:33,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:33,490 INFO L471 AbstractCegarLoop]: Abstraction has 615 states and 860 transitions. [2024-12-02 10:42:33,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 10:42:33,491 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 860 transitions. [2024-12-02 10:42:33,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-02 10:42:33,493 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:33,494 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:33,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:42:33,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 10:42:33,695 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:42:33,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:33,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1175793255, now seen corresponding path program 1 times [2024-12-02 10:42:33,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:33,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189633781] [2024-12-02 10:42:33,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:33,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 10:42:34,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:34,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189633781] [2024-12-02 10:42:34,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189633781] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:34,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:34,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:42:34,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401385027] [2024-12-02 10:42:34,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:34,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:42:34,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:34,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:42:34,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:42:34,491 INFO L87 Difference]: Start difference. First operand 615 states and 860 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-12-02 10:42:34,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:34,632 INFO L93 Difference]: Finished difference Result 1448 states and 2004 transitions. [2024-12-02 10:42:34,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:42:34,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 74 [2024-12-02 10:42:34,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:34,640 INFO L225 Difference]: With dead ends: 1448 [2024-12-02 10:42:34,640 INFO L226 Difference]: Without dead ends: 850 [2024-12-02 10:42:34,643 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 10:42:34,644 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 321 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:34,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1673 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:42:34,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2024-12-02 10:42:34,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 845. [2024-12-02 10:42:34,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 626 states have (on average 1.354632587859425) internal successors, (848), 643 states have internal predecessors, (848), 156 states have call successors, (156), 62 states have call predecessors, (156), 61 states have return successors, (155), 154 states have call predecessors, (155), 155 states have call successors, (155) [2024-12-02 10:42:34,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1159 transitions. [2024-12-02 10:42:34,693 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1159 transitions. Word has length 74 [2024-12-02 10:42:34,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:34,693 INFO L471 AbstractCegarLoop]: Abstraction has 845 states and 1159 transitions. [2024-12-02 10:42:34,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-12-02 10:42:34,693 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1159 transitions. [2024-12-02 10:42:34,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-12-02 10:42:34,697 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:34,698 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:34,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 10:42:34,698 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:42:34,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:34,698 INFO L85 PathProgramCache]: Analyzing trace with hash 601508666, now seen corresponding path program 1 times [2024-12-02 10:42:34,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:34,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50301855] [2024-12-02 10:42:34,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:34,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-12-02 10:42:35,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:35,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50301855] [2024-12-02 10:42:35,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50301855] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:35,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:35,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:42:35,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401860745] [2024-12-02 10:42:35,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:35,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:42:35,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:35,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:42:35,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:42:35,609 INFO L87 Difference]: Start difference. First operand 845 states and 1159 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 10:42:35,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:35,710 INFO L93 Difference]: Finished difference Result 1668 states and 2293 transitions. [2024-12-02 10:42:35,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:42:35,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 112 [2024-12-02 10:42:35,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:35,717 INFO L225 Difference]: With dead ends: 1668 [2024-12-02 10:42:35,717 INFO L226 Difference]: Without dead ends: 850 [2024-12-02 10:42:35,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:42:35,721 INFO L435 NwaCegarLoop]: 860 mSDtfsCounter, 6 mSDsluCounter, 2552 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3412 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:35,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 3412 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:42:35,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2024-12-02 10:42:35,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 848. [2024-12-02 10:42:35,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 629 states have (on average 1.3529411764705883) internal successors, (851), 646 states have internal predecessors, (851), 156 states have call successors, (156), 62 states have call predecessors, (156), 61 states have return successors, (155), 154 states have call predecessors, (155), 155 states have call successors, (155) [2024-12-02 10:42:35,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1162 transitions. [2024-12-02 10:42:35,766 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1162 transitions. Word has length 112 [2024-12-02 10:42:35,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:35,766 INFO L471 AbstractCegarLoop]: Abstraction has 848 states and 1162 transitions. [2024-12-02 10:42:35,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 10:42:35,766 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1162 transitions. [2024-12-02 10:42:35,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 10:42:35,769 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:35,769 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:35,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 10:42:35,769 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:42:35,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:35,770 INFO L85 PathProgramCache]: Analyzing trace with hash -354082688, now seen corresponding path program 1 times [2024-12-02 10:42:35,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:35,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123283475] [2024-12-02 10:42:35,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:35,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-12-02 10:42:36,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:36,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123283475] [2024-12-02 10:42:36,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123283475] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:36,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:36,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:42:36,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440200036] [2024-12-02 10:42:36,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:36,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:42:36,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:36,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:42:36,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:42:36,517 INFO L87 Difference]: Start difference. First operand 848 states and 1162 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 10:42:36,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:36,550 INFO L93 Difference]: Finished difference Result 852 states and 1166 transitions. [2024-12-02 10:42:36,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:42:36,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 115 [2024-12-02 10:42:36,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:36,557 INFO L225 Difference]: With dead ends: 852 [2024-12-02 10:42:36,557 INFO L226 Difference]: Without dead ends: 849 [2024-12-02 10:42:36,558 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 10:42:36,558 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 0 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:36,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1712 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:42:36,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2024-12-02 10:42:36,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2024-12-02 10:42:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 630 states have (on average 1.3523809523809525) internal successors, (852), 647 states have internal predecessors, (852), 156 states have call successors, (156), 62 states have call predecessors, (156), 61 states have return successors, (155), 154 states have call predecessors, (155), 155 states have call successors, (155) [2024-12-02 10:42:36,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1163 transitions. [2024-12-02 10:42:36,593 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1163 transitions. Word has length 115 [2024-12-02 10:42:36,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:36,593 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1163 transitions. [2024-12-02 10:42:36,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 10:42:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1163 transitions. [2024-12-02 10:42:36,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 10:42:36,596 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:36,596 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:36,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:42:36,596 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:42:36,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:36,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1450224091, now seen corresponding path program 1 times [2024-12-02 10:42:36,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:36,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50715312] [2024-12-02 10:42:36,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:36,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:37,395 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-12-02 10:42:37,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:37,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50715312] [2024-12-02 10:42:37,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50715312] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:37,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:37,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:42:37,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083149473] [2024-12-02 10:42:37,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:37,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:42:37,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:37,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:42:37,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:42:37,397 INFO L87 Difference]: Start difference. First operand 849 states and 1163 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 10:42:37,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:37,474 INFO L93 Difference]: Finished difference Result 1768 states and 2422 transitions. [2024-12-02 10:42:37,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:42:37,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 117 [2024-12-02 10:42:37,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:37,483 INFO L225 Difference]: With dead ends: 1768 [2024-12-02 10:42:37,483 INFO L226 Difference]: Without dead ends: 946 [2024-12-02 10:42:37,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:42:37,488 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 650 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:37,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 2017 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:42:37,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2024-12-02 10:42:37,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 928. [2024-12-02 10:42:37,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 679 states have (on average 1.346097201767305) internal successors, (914), 704 states have internal predecessors, (914), 173 states have call successors, (173), 77 states have call predecessors, (173), 74 states have return successors, (177), 165 states have call predecessors, (177), 172 states have call successors, (177) [2024-12-02 10:42:37,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1264 transitions. [2024-12-02 10:42:37,534 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1264 transitions. Word has length 117 [2024-12-02 10:42:37,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:37,534 INFO L471 AbstractCegarLoop]: Abstraction has 928 states and 1264 transitions. [2024-12-02 10:42:37,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 10:42:37,535 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1264 transitions. [2024-12-02 10:42:37,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-12-02 10:42:37,542 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:37,542 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:37,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:42:37,542 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:42:37,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:37,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1975245814, now seen corresponding path program 1 times [2024-12-02 10:42:37,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:37,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682484592] [2024-12-02 10:42:37,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:37,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:38,577 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-12-02 10:42:38,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:38,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682484592] [2024-12-02 10:42:38,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682484592] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:42:38,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678778347] [2024-12-02 10:42:38,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:38,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:38,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:42:38,579 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:42:38,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 10:42:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:40,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 2775 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 10:42:40,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:42:40,189 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-12-02 10:42:40,189 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:42:40,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678778347] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:40,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:42:40,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-12-02 10:42:40,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734061407] [2024-12-02 10:42:40,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:40,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:42:40,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:40,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:42:40,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:42:40,191 INFO L87 Difference]: Start difference. First operand 928 states and 1264 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 5 states have internal predecessors, (122), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 10:42:40,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:40,284 INFO L93 Difference]: Finished difference Result 1835 states and 2507 transitions. [2024-12-02 10:42:40,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:42:40,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 5 states have internal predecessors, (122), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 217 [2024-12-02 10:42:40,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:40,296 INFO L225 Difference]: With dead ends: 1835 [2024-12-02 10:42:40,296 INFO L226 Difference]: Without dead ends: 934 [2024-12-02 10:42:40,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:42:40,302 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 3 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4264 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:40,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4264 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:42:40,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2024-12-02 10:42:40,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 933. [2024-12-02 10:42:40,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 683 states have (on average 1.3440702781844802) internal successors, (918), 707 states have internal predecessors, (918), 173 states have call successors, (173), 77 states have call predecessors, (173), 75 states have return successors, (181), 166 states have call predecessors, (181), 172 states have call successors, (181) [2024-12-02 10:42:40,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1272 transitions. [2024-12-02 10:42:40,353 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1272 transitions. Word has length 217 [2024-12-02 10:42:40,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:40,354 INFO L471 AbstractCegarLoop]: Abstraction has 933 states and 1272 transitions. [2024-12-02 10:42:40,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 5 states have internal predecessors, (122), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 10:42:40,354 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1272 transitions. [2024-12-02 10:42:40,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-12-02 10:42:40,362 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:40,363 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:40,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 10:42:40,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 10:42:40,563 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:42:40,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:40,564 INFO L85 PathProgramCache]: Analyzing trace with hash 316776585, now seen corresponding path program 1 times [2024-12-02 10:42:40,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:40,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167486131] [2024-12-02 10:42:40,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:40,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:41,648 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-12-02 10:42:41,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:41,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167486131] [2024-12-02 10:42:41,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167486131] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:42:41,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881327718] [2024-12-02 10:42:41,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:41,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:41,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:42:41,651 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:42:41,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 10:42:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:43,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 2767 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:42:43,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:42:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-12-02 10:42:43,178 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:42:43,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881327718] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:43,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:42:43,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-12-02 10:42:43,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469725324] [2024-12-02 10:42:43,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:43,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 10:42:43,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:43,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 10:42:43,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:42:43,179 INFO L87 Difference]: Start difference. First operand 933 states and 1272 transitions. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 10:42:43,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:43,329 INFO L93 Difference]: Finished difference Result 1842 states and 2517 transitions. [2024-12-02 10:42:43,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:42:43,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 217 [2024-12-02 10:42:43,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:43,337 INFO L225 Difference]: With dead ends: 1842 [2024-12-02 10:42:43,337 INFO L226 Difference]: Without dead ends: 936 [2024-12-02 10:42:43,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:42:43,342 INFO L435 NwaCegarLoop]: 854 mSDtfsCounter, 2 mSDsluCounter, 5095 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5949 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:43,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5949 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:42:43,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2024-12-02 10:42:43,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 936. [2024-12-02 10:42:43,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 686 states have (on average 1.3425655976676385) internal successors, (921), 710 states have internal predecessors, (921), 173 states have call successors, (173), 77 states have call predecessors, (173), 75 states have return successors, (181), 166 states have call predecessors, (181), 172 states have call successors, (181) [2024-12-02 10:42:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1275 transitions. [2024-12-02 10:42:43,379 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1275 transitions. Word has length 217 [2024-12-02 10:42:43,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:43,380 INFO L471 AbstractCegarLoop]: Abstraction has 936 states and 1275 transitions. [2024-12-02 10:42:43,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 10:42:43,380 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1275 transitions. [2024-12-02 10:42:43,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-12-02 10:42:43,387 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:43,387 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:43,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 10:42:43,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 10:42:43,588 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:42:43,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:43,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1484467611, now seen corresponding path program 1 times [2024-12-02 10:42:43,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:43,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746164239] [2024-12-02 10:42:43,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:43,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:44,598 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-12-02 10:42:44,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:44,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746164239] [2024-12-02 10:42:44,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746164239] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:42:44,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943673633] [2024-12-02 10:42:44,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:44,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:44,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:42:44,601 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:42:44,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 10:42:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:45,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 2925 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:42:45,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:42:45,929 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-12-02 10:42:45,929 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:42:45,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943673633] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:45,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:42:45,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-12-02 10:42:45,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575036588] [2024-12-02 10:42:45,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:45,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 10:42:45,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:45,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 10:42:45,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:42:45,931 INFO L87 Difference]: Start difference. First operand 936 states and 1275 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2024-12-02 10:42:46,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:46,046 INFO L93 Difference]: Finished difference Result 1854 states and 2534 transitions. [2024-12-02 10:42:46,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:42:46,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) Word has length 233 [2024-12-02 10:42:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:46,051 INFO L225 Difference]: With dead ends: 1854 [2024-12-02 10:42:46,051 INFO L226 Difference]: Without dead ends: 945 [2024-12-02 10:42:46,054 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:42:46,054 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 4 mSDsluCounter, 5100 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5955 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:46,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5955 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:42:46,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2024-12-02 10:42:46,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 937. [2024-12-02 10:42:46,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 686 states have (on average 1.3425655976676385) internal successors, (921), 711 states have internal predecessors, (921), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 167 states have call predecessors, (182), 173 states have call successors, (182) [2024-12-02 10:42:46,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1277 transitions. [2024-12-02 10:42:46,079 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1277 transitions. Word has length 233 [2024-12-02 10:42:46,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:46,080 INFO L471 AbstractCegarLoop]: Abstraction has 937 states and 1277 transitions. [2024-12-02 10:42:46,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2024-12-02 10:42:46,080 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1277 transitions. [2024-12-02 10:42:46,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-12-02 10:42:46,084 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:46,085 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:46,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 10:42:46,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-12-02 10:42:46,285 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:42:46,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:46,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1594345959, now seen corresponding path program 1 times [2024-12-02 10:42:46,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:46,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176256579] [2024-12-02 10:42:46,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:46,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-12-02 10:42:47,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:47,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176256579] [2024-12-02 10:42:47,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176256579] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:47,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:47,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:42:47,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472296533] [2024-12-02 10:42:47,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:47,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:42:47,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:47,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:42:47,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:42:47,378 INFO L87 Difference]: Start difference. First operand 937 states and 1277 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2024-12-02 10:42:47,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:47,448 INFO L93 Difference]: Finished difference Result 1854 states and 2535 transitions. [2024-12-02 10:42:47,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:42:47,449 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 233 [2024-12-02 10:42:47,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:47,454 INFO L225 Difference]: With dead ends: 1854 [2024-12-02 10:42:47,454 INFO L226 Difference]: Without dead ends: 944 [2024-12-02 10:42:47,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:42:47,458 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 3 mSDsluCounter, 3410 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4267 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:47,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4267 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:42:47,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2024-12-02 10:42:47,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2024-12-02 10:42:47,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 690 states have (on average 1.3405797101449275) internal successors, (925), 714 states have internal predecessors, (925), 174 states have call successors, (174), 77 states have call predecessors, (174), 76 states have return successors, (186), 168 states have call predecessors, (186), 173 states have call successors, (186) [2024-12-02 10:42:47,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1285 transitions. [2024-12-02 10:42:47,483 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1285 transitions. Word has length 233 [2024-12-02 10:42:47,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:47,483 INFO L471 AbstractCegarLoop]: Abstraction has 942 states and 1285 transitions. [2024-12-02 10:42:47,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2024-12-02 10:42:47,484 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1285 transitions. [2024-12-02 10:42:47,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-12-02 10:42:47,489 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:47,489 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:47,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 10:42:47,489 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:42:47,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:47,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1405719947, now seen corresponding path program 1 times [2024-12-02 10:42:47,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:47,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426895441] [2024-12-02 10:42:47,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:47,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:48,401 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-12-02 10:42:48,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:48,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426895441] [2024-12-02 10:42:48,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426895441] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:48,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:48,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:42:48,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476391860] [2024-12-02 10:42:48,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:48,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:42:48,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:48,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:42:48,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:42:48,403 INFO L87 Difference]: Start difference. First operand 942 states and 1285 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2024-12-02 10:42:48,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:48,479 INFO L93 Difference]: Finished difference Result 1860 states and 2543 transitions. [2024-12-02 10:42:48,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:42:48,479 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 249 [2024-12-02 10:42:48,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:48,487 INFO L225 Difference]: With dead ends: 1860 [2024-12-02 10:42:48,487 INFO L226 Difference]: Without dead ends: 945 [2024-12-02 10:42:48,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:42:48,491 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 1 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4307 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:48,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4307 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:42:48,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2024-12-02 10:42:48,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 939. [2024-12-02 10:42:48,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 688 states have (on average 1.3415697674418605) internal successors, (923), 712 states have internal predecessors, (923), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 168 states have call predecessors, (182), 173 states have call successors, (182) [2024-12-02 10:42:48,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1279 transitions. [2024-12-02 10:42:48,541 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1279 transitions. Word has length 249 [2024-12-02 10:42:48,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:48,541 INFO L471 AbstractCegarLoop]: Abstraction has 939 states and 1279 transitions. [2024-12-02 10:42:48,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2024-12-02 10:42:48,541 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1279 transitions. [2024-12-02 10:42:48,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-12-02 10:42:48,546 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:48,546 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:48,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 10:42:48,546 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:42:48,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:48,547 INFO L85 PathProgramCache]: Analyzing trace with hash 896246857, now seen corresponding path program 1 times [2024-12-02 10:42:48,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:48,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547465395] [2024-12-02 10:42:48,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:48,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:49,902 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-12-02 10:42:49,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:49,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547465395] [2024-12-02 10:42:49,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547465395] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:42:49,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780213141] [2024-12-02 10:42:49,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:49,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:49,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:42:49,905 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:42:49,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 10:42:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:51,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 3077 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:42:51,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:42:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-12-02 10:42:51,462 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:42:51,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780213141] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:51,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:42:51,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-12-02 10:42:51,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367899364] [2024-12-02 10:42:51,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:51,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:42:51,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:51,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:42:51,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:42:51,464 INFO L87 Difference]: Start difference. First operand 939 states and 1279 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2024-12-02 10:42:51,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:51,550 INFO L93 Difference]: Finished difference Result 1854 states and 2531 transitions. [2024-12-02 10:42:51,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:42:51,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 249 [2024-12-02 10:42:51,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:51,558 INFO L225 Difference]: With dead ends: 1854 [2024-12-02 10:42:51,558 INFO L226 Difference]: Without dead ends: 942 [2024-12-02 10:42:51,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:42:51,562 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 0 mSDsluCounter, 2552 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3409 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:51,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3409 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:42:51,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2024-12-02 10:42:51,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 939. [2024-12-02 10:42:51,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 688 states have (on average 1.3415697674418605) internal successors, (923), 712 states have internal predecessors, (923), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 168 states have call predecessors, (182), 173 states have call successors, (182) [2024-12-02 10:42:51,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1279 transitions. [2024-12-02 10:42:51,601 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1279 transitions. Word has length 249 [2024-12-02 10:42:51,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:51,602 INFO L471 AbstractCegarLoop]: Abstraction has 939 states and 1279 transitions. [2024-12-02 10:42:51,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2024-12-02 10:42:51,602 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1279 transitions. [2024-12-02 10:42:51,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-12-02 10:42:51,610 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:51,610 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:51,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 10:42:51,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 10:42:51,811 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:42:51,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:51,811 INFO L85 PathProgramCache]: Analyzing trace with hash 902775570, now seen corresponding path program 1 times [2024-12-02 10:42:51,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:51,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404136967] [2024-12-02 10:42:51,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:51,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 10:42:52,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:52,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404136967] [2024-12-02 10:42:52,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404136967] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:52,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:52,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:42:52,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121545268] [2024-12-02 10:42:52,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:52,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:42:52,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:52,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:42:52,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:42:52,675 INFO L87 Difference]: Start difference. First operand 939 states and 1279 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 10:42:52,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:52,713 INFO L93 Difference]: Finished difference Result 1852 states and 2529 transitions. [2024-12-02 10:42:52,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:42:52,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 270 [2024-12-02 10:42:52,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:52,721 INFO L225 Difference]: With dead ends: 1852 [2024-12-02 10:42:52,721 INFO L226 Difference]: Without dead ends: 940 [2024-12-02 10:42:52,725 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 10:42:52,725 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 0 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:52,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1712 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:42:52,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2024-12-02 10:42:52,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 940. [2024-12-02 10:42:52,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 689 states have (on average 1.3410740203193032) internal successors, (924), 713 states have internal predecessors, (924), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 168 states have call predecessors, (182), 173 states have call successors, (182) [2024-12-02 10:42:52,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1280 transitions. [2024-12-02 10:42:52,762 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1280 transitions. Word has length 270 [2024-12-02 10:42:52,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:52,763 INFO L471 AbstractCegarLoop]: Abstraction has 940 states and 1280 transitions. [2024-12-02 10:42:52,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 10:42:52,763 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1280 transitions. [2024-12-02 10:42:52,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-12-02 10:42:52,771 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:52,771 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:52,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 10:42:52,771 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:42:52,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:52,772 INFO L85 PathProgramCache]: Analyzing trace with hash 132042004, now seen corresponding path program 1 times [2024-12-02 10:42:52,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:52,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627508011] [2024-12-02 10:42:52,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:52,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 10:42:53,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:53,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627508011] [2024-12-02 10:42:53,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627508011] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:53,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:53,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:42:53,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995717290] [2024-12-02 10:42:53,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:53,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:42:53,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:53,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:42:53,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:42:53,581 INFO L87 Difference]: Start difference. First operand 940 states and 1280 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 10:42:53,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:53,617 INFO L93 Difference]: Finished difference Result 1855 states and 2532 transitions. [2024-12-02 10:42:53,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:42:53,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 270 [2024-12-02 10:42:53,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:53,625 INFO L225 Difference]: With dead ends: 1855 [2024-12-02 10:42:53,625 INFO L226 Difference]: Without dead ends: 942 [2024-12-02 10:42:53,628 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 10:42:53,629 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 1 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:53,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1712 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:42:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2024-12-02 10:42:53,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 941. [2024-12-02 10:42:53,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 690 states have (on average 1.3405797101449275) internal successors, (925), 714 states have internal predecessors, (925), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 168 states have call predecessors, (182), 173 states have call successors, (182) [2024-12-02 10:42:53,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1281 transitions. [2024-12-02 10:42:53,665 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1281 transitions. Word has length 270 [2024-12-02 10:42:53,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:53,666 INFO L471 AbstractCegarLoop]: Abstraction has 941 states and 1281 transitions. [2024-12-02 10:42:53,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 10:42:53,666 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1281 transitions. [2024-12-02 10:42:53,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-12-02 10:42:53,671 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:53,672 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:53,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 10:42:53,672 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:42:53,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:53,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1840876088, now seen corresponding path program 1 times [2024-12-02 10:42:53,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:53,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128076274] [2024-12-02 10:42:53,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:53,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 10:42:54,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:54,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128076274] [2024-12-02 10:42:54,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128076274] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:42:54,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082735457] [2024-12-02 10:42:54,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:54,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:54,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:42:54,483 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:42:54,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 10:42:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:55,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 3194 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:42:55,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:42:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-12-02 10:42:55,993 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:42:55,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082735457] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:55,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:42:55,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 10:42:55,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313359290] [2024-12-02 10:42:55,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:55,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:42:55,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:55,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:42:55,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:42:55,994 INFO L87 Difference]: Start difference. First operand 941 states and 1281 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 10:42:56,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:56,038 INFO L93 Difference]: Finished difference Result 1857 states and 2534 transitions. [2024-12-02 10:42:56,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:42:56,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 272 [2024-12-02 10:42:56,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:56,043 INFO L225 Difference]: With dead ends: 1857 [2024-12-02 10:42:56,043 INFO L226 Difference]: Without dead ends: 943 [2024-12-02 10:42:56,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:42:56,045 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 1 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:56,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2561 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:42:56,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2024-12-02 10:42:56,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 943. [2024-12-02 10:42:56,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 692 states have (on average 1.3395953757225434) internal successors, (927), 716 states have internal predecessors, (927), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 168 states have call predecessors, (182), 173 states have call successors, (182) [2024-12-02 10:42:56,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1283 transitions. [2024-12-02 10:42:56,078 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1283 transitions. Word has length 272 [2024-12-02 10:42:56,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:56,079 INFO L471 AbstractCegarLoop]: Abstraction has 943 states and 1283 transitions. [2024-12-02 10:42:56,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 10:42:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1283 transitions. [2024-12-02 10:42:56,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-12-02 10:42:56,085 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:56,085 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:56,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 10:42:56,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 10:42:56,285 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:42:56,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:56,286 INFO L85 PathProgramCache]: Analyzing trace with hash 957367098, now seen corresponding path program 1 times [2024-12-02 10:42:56,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:56,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996469519] [2024-12-02 10:42:56,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:56,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:56,980 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 10:42:56,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:56,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996469519] [2024-12-02 10:42:56,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996469519] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:42:56,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181090829] [2024-12-02 10:42:56,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:56,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:56,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:42:56,982 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:42:56,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 10:42:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:58,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 3197 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:42:58,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:42:58,580 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-12-02 10:42:58,580 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:42:58,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181090829] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:58,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:42:58,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 10:42:58,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21540301] [2024-12-02 10:42:58,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:58,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:42:58,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:58,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:42:58,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:42:58,582 INFO L87 Difference]: Start difference. First operand 943 states and 1283 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 10:42:58,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:58,633 INFO L93 Difference]: Finished difference Result 1861 states and 2538 transitions. [2024-12-02 10:42:58,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:42:58,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 272 [2024-12-02 10:42:58,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:58,638 INFO L225 Difference]: With dead ends: 1861 [2024-12-02 10:42:58,638 INFO L226 Difference]: Without dead ends: 945 [2024-12-02 10:42:58,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:42:58,641 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 1 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:58,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2559 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:42:58,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2024-12-02 10:42:58,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 945. [2024-12-02 10:42:58,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 694 states have (on average 1.3386167146974064) internal successors, (929), 718 states have internal predecessors, (929), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 168 states have call predecessors, (182), 173 states have call successors, (182) [2024-12-02 10:42:58,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1285 transitions. [2024-12-02 10:42:58,664 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1285 transitions. Word has length 272 [2024-12-02 10:42:58,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:58,664 INFO L471 AbstractCegarLoop]: Abstraction has 945 states and 1285 transitions. [2024-12-02 10:42:58,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 10:42:58,664 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1285 transitions. [2024-12-02 10:42:58,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-12-02 10:42:58,667 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:58,667 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:58,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 10:42:58,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 10:42:58,868 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:42:58,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:58,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1986214980, now seen corresponding path program 1 times [2024-12-02 10:42:58,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:58,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10492051] [2024-12-02 10:42:58,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:58,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 10:42:59,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:59,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10492051] [2024-12-02 10:42:59,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10492051] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:42:59,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157602649] [2024-12-02 10:42:59,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:59,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:59,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:42:59,765 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:42:59,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 10:43:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:43:01,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 3200 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:43:01,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:43:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-12-02 10:43:01,485 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:43:01,898 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 10:43:01,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157602649] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:43:01,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:43:01,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-12-02 10:43:01,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581046815] [2024-12-02 10:43:01,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:43:01,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:43:01,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:43:01,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:43:01,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:43:01,900 INFO L87 Difference]: Start difference. First operand 945 states and 1285 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-12-02 10:43:01,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:43:01,959 INFO L93 Difference]: Finished difference Result 1869 states and 2548 transitions. [2024-12-02 10:43:01,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:43:01,960 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 272 [2024-12-02 10:43:01,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:43:01,964 INFO L225 Difference]: With dead ends: 1869 [2024-12-02 10:43:01,964 INFO L226 Difference]: Without dead ends: 951 [2024-12-02 10:43:01,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:43:01,966 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 2 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3420 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:43:01,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3420 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:43:01,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2024-12-02 10:43:01,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 951. [2024-12-02 10:43:01,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 700 states have (on average 1.3357142857142856) internal successors, (935), 724 states have internal predecessors, (935), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 168 states have call predecessors, (182), 173 states have call successors, (182) [2024-12-02 10:43:01,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1291 transitions. [2024-12-02 10:43:01,987 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1291 transitions. Word has length 272 [2024-12-02 10:43:01,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:43:01,988 INFO L471 AbstractCegarLoop]: Abstraction has 951 states and 1291 transitions. [2024-12-02 10:43:01,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-12-02 10:43:01,988 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1291 transitions. [2024-12-02 10:43:01,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-12-02 10:43:01,991 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:43:01,991 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:43:02,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 10:43:02,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 10:43:02,191 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:43:02,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:43:02,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1911721432, now seen corresponding path program 2 times [2024-12-02 10:43:02,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:43:02,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191748875] [2024-12-02 10:43:02,192 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:43:02,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:43:02,728 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 10:43:02,728 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:43:02,888 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-12-02 10:43:02,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:43:02,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191748875] [2024-12-02 10:43:02,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191748875] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:43:02,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:43:02,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:43:02,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664419128] [2024-12-02 10:43:02,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:43:02,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:43:02,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:43:02,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:43:02,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:43:02,890 INFO L87 Difference]: Start difference. First operand 951 states and 1291 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-12-02 10:43:02,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:43:02,941 INFO L93 Difference]: Finished difference Result 1876 states and 2553 transitions. [2024-12-02 10:43:02,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:43:02,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 278 [2024-12-02 10:43:02,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:43:02,951 INFO L225 Difference]: With dead ends: 1876 [2024-12-02 10:43:02,951 INFO L226 Difference]: Without dead ends: 952 [2024-12-02 10:43:02,953 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:43:02,954 INFO L435 NwaCegarLoop]: 861 mSDtfsCounter, 18 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2565 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:43:02,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2565 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:43:02,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2024-12-02 10:43:02,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 951. [2024-12-02 10:43:02,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 700 states have (on average 1.332857142857143) internal successors, (933), 724 states have internal predecessors, (933), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 168 states have call predecessors, (182), 173 states have call successors, (182) [2024-12-02 10:43:02,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1289 transitions. [2024-12-02 10:43:02,983 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1289 transitions. Word has length 278 [2024-12-02 10:43:02,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:43:02,983 INFO L471 AbstractCegarLoop]: Abstraction has 951 states and 1289 transitions. [2024-12-02 10:43:02,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-12-02 10:43:02,983 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1289 transitions. [2024-12-02 10:43:02,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-12-02 10:43:02,987 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:43:02,988 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:43:02,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 10:43:02,988 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:43:02,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:43:02,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1566492725, now seen corresponding path program 1 times [2024-12-02 10:43:02,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:43:02,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208985610] [2024-12-02 10:43:02,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:43:02,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:43:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:43:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 10:43:04,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:43:04,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208985610] [2024-12-02 10:43:04,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208985610] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:43:04,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979068303] [2024-12-02 10:43:04,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:43:04,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:43:04,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:43:04,010 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:43:04,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 10:43:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:43:05,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 3251 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 10:43:05,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:43:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 64 proven. 16 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-12-02 10:43:05,858 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:43:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 10:43:06,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979068303] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:43:06,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:43:06,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-12-02 10:43:06,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899295083] [2024-12-02 10:43:06,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:43:06,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 10:43:06,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:43:06,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 10:43:06,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-12-02 10:43:06,179 INFO L87 Difference]: Start difference. First operand 951 states and 1289 transitions. Second operand has 13 states, 13 states have (on average 14.461538461538462) internal successors, (188), 13 states have internal predecessors, (188), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-12-02 10:43:06,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:43:06,279 INFO L93 Difference]: Finished difference Result 1887 states and 2565 transitions. [2024-12-02 10:43:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 10:43:06,280 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.461538461538462) internal successors, (188), 13 states have internal predecessors, (188), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 280 [2024-12-02 10:43:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:43:06,287 INFO L225 Difference]: With dead ends: 1887 [2024-12-02 10:43:06,287 INFO L226 Difference]: Without dead ends: 963 [2024-12-02 10:43:06,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-12-02 10:43:06,291 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 2 mSDsluCounter, 4260 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5116 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:43:06,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5116 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:43:06,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2024-12-02 10:43:06,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2024-12-02 10:43:06,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 712 states have (on average 1.327247191011236) internal successors, (945), 736 states have internal predecessors, (945), 174 states have call successors, (174), 77 states have call predecessors, (174), 75 states have return successors, (182), 168 states have call predecessors, (182), 173 states have call successors, (182) [2024-12-02 10:43:06,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1301 transitions. [2024-12-02 10:43:06,318 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1301 transitions. Word has length 280 [2024-12-02 10:43:06,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:43:06,319 INFO L471 AbstractCegarLoop]: Abstraction has 963 states and 1301 transitions. [2024-12-02 10:43:06,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.461538461538462) internal successors, (188), 13 states have internal predecessors, (188), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-12-02 10:43:06,319 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1301 transitions. [2024-12-02 10:43:06,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-12-02 10:43:06,322 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:43:06,322 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:43:06,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 10:43:06,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:43:06,523 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:43:06,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:43:06,523 INFO L85 PathProgramCache]: Analyzing trace with hash -761545821, now seen corresponding path program 2 times [2024-12-02 10:43:06,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:43:06,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921933769] [2024-12-02 10:43:06,524 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:43:06,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:43:07,206 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 10:43:07,206 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:43:07,540 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2024-12-02 10:43:07,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:43:07,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921933769] [2024-12-02 10:43:07,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921933769] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:43:07,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:43:07,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:43:07,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424601334] [2024-12-02 10:43:07,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:43:07,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:43:07,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:43:07,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:43:07,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:43:07,542 INFO L87 Difference]: Start difference. First operand 963 states and 1301 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 10:43:07,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:43:07,667 INFO L93 Difference]: Finished difference Result 1905 states and 2589 transitions. [2024-12-02 10:43:07,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:43:07,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 292 [2024-12-02 10:43:07,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:43:07,675 INFO L225 Difference]: With dead ends: 1905 [2024-12-02 10:43:07,675 INFO L226 Difference]: Without dead ends: 969 [2024-12-02 10:43:07,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:43:07,679 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 0 mSDsluCounter, 2567 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3426 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:43:07,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3426 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:43:07,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2024-12-02 10:43:07,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 967. [2024-12-02 10:43:07,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 715 states have (on average 1.3258741258741258) internal successors, (948), 739 states have internal predecessors, (948), 174 states have call successors, (174), 77 states have call predecessors, (174), 76 states have return successors, (184), 169 states have call predecessors, (184), 173 states have call successors, (184) [2024-12-02 10:43:07,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1306 transitions. [2024-12-02 10:43:07,715 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1306 transitions. Word has length 292 [2024-12-02 10:43:07,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:43:07,716 INFO L471 AbstractCegarLoop]: Abstraction has 967 states and 1306 transitions. [2024-12-02 10:43:07,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 10:43:07,717 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1306 transitions. [2024-12-02 10:43:07,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-12-02 10:43:07,721 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:43:07,722 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:43:07,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 10:43:07,722 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:43:07,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:43:07,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1706620405, now seen corresponding path program 1 times [2024-12-02 10:43:07,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:43:07,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924089948] [2024-12-02 10:43:07,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:43:07,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:43:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:43:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 3 proven. 100 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 10:43:08,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:43:08,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924089948] [2024-12-02 10:43:08,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924089948] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:43:08,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346212833] [2024-12-02 10:43:08,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:43:08,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:43:08,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:43:08,986 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:43:08,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 10:43:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:43:10,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 3379 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 10:43:10,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:43:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 64 proven. 100 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-12-02 10:43:10,905 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:43:11,508 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 3 proven. 100 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 10:43:11,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346212833] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:43:11,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:43:11,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-12-02 10:43:11,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321238441] [2024-12-02 10:43:11,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:43:11,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 10:43:11,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:43:11,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 10:43:11,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-12-02 10:43:11,511 INFO L87 Difference]: Start difference. First operand 967 states and 1306 transitions. Second operand has 25 states, 25 states have (on average 8.64) internal successors, (216), 25 states have internal predecessors, (216), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-12-02 10:43:11,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:43:11,666 INFO L93 Difference]: Finished difference Result 1931 states and 2617 transitions. [2024-12-02 10:43:11,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 10:43:11,666 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.64) internal successors, (216), 25 states have internal predecessors, (216), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 292 [2024-12-02 10:43:11,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:43:11,671 INFO L225 Difference]: With dead ends: 1931 [2024-12-02 10:43:11,671 INFO L226 Difference]: Without dead ends: 991 [2024-12-02 10:43:11,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-12-02 10:43:11,673 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 2 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3412 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:43:11,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3412 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:43:11,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2024-12-02 10:43:11,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2024-12-02 10:43:11,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 739 states have (on average 1.3152909336941814) internal successors, (972), 763 states have internal predecessors, (972), 174 states have call successors, (174), 77 states have call predecessors, (174), 76 states have return successors, (184), 169 states have call predecessors, (184), 173 states have call successors, (184) [2024-12-02 10:43:11,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1330 transitions. [2024-12-02 10:43:11,706 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1330 transitions. Word has length 292 [2024-12-02 10:43:11,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:43:11,707 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1330 transitions. [2024-12-02 10:43:11,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.64) internal successors, (216), 25 states have internal predecessors, (216), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-12-02 10:43:11,707 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1330 transitions. [2024-12-02 10:43:11,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-12-02 10:43:11,712 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:43:11,712 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:43:11,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-12-02 10:43:11,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:43:11,913 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:43:11,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:43:11,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1611159109, now seen corresponding path program 2 times [2024-12-02 10:43:11,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:43:11,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516028625] [2024-12-02 10:43:11,913 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:43:11,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:43:12,521 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 10:43:12,521 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:43:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2024-12-02 10:43:12,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:43:12,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516028625] [2024-12-02 10:43:12,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516028625] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:43:12,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:43:12,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:43:12,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731515264] [2024-12-02 10:43:12,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:43:12,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:43:12,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:43:12,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:43:12,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:43:12,772 INFO L87 Difference]: Start difference. First operand 991 states and 1330 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 10:43:12,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:43:12,853 INFO L93 Difference]: Finished difference Result 1964 states and 2690 transitions. [2024-12-02 10:43:12,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:43:12,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 316 [2024-12-02 10:43:12,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:43:12,861 INFO L225 Difference]: With dead ends: 1964 [2024-12-02 10:43:12,861 INFO L226 Difference]: Without dead ends: 1000 [2024-12-02 10:43:12,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:43:12,867 INFO L435 NwaCegarLoop]: 854 mSDtfsCounter, 4 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:43:12,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2554 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:43:12,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2024-12-02 10:43:12,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 999. [2024-12-02 10:43:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 745 states have (on average 1.316778523489933) internal successors, (981), 770 states have internal predecessors, (981), 174 states have call successors, (174), 78 states have call predecessors, (174), 78 states have return successors, (188), 169 states have call predecessors, (188), 173 states have call successors, (188) [2024-12-02 10:43:12,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1343 transitions. [2024-12-02 10:43:12,902 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1343 transitions. Word has length 316 [2024-12-02 10:43:12,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:43:12,903 INFO L471 AbstractCegarLoop]: Abstraction has 999 states and 1343 transitions. [2024-12-02 10:43:12,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 10:43:12,903 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1343 transitions. [2024-12-02 10:43:12,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-12-02 10:43:12,908 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:43:12,908 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:43:12,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 10:43:12,908 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:43:12,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:43:12,909 INFO L85 PathProgramCache]: Analyzing trace with hash -347075917, now seen corresponding path program 1 times [2024-12-02 10:43:12,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:43:12,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826961718] [2024-12-02 10:43:12,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:43:12,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:43:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:43:15,358 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 3 proven. 484 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-12-02 10:43:15,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:43:15,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826961718] [2024-12-02 10:43:15,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826961718] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:43:15,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294713396] [2024-12-02 10:43:15,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:43:15,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:43:15,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:43:15,360 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:43:15,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 10:43:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:43:17,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 3613 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 10:43:17,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:43:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 68 proven. 484 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-12-02 10:43:17,403 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:43:18,184 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 3 proven. 484 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-12-02 10:43:18,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294713396] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:43:18,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:43:18,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 33 [2024-12-02 10:43:18,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292822664] [2024-12-02 10:43:18,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:43:18,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-02 10:43:18,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:43:18,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-02 10:43:18,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 10:43:18,186 INFO L87 Difference]: Start difference. First operand 999 states and 1343 transitions. Second operand has 33 states, 33 states have (on average 7.151515151515151) internal successors, (236), 33 states have internal predecessors, (236), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-12-02 10:43:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:43:18,392 INFO L93 Difference]: Finished difference Result 1987 states and 2679 transitions. [2024-12-02 10:43:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-12-02 10:43:18,393 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 7.151515151515151) internal successors, (236), 33 states have internal predecessors, (236), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 318 [2024-12-02 10:43:18,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:43:18,397 INFO L225 Difference]: With dead ends: 1987 [2024-12-02 10:43:18,397 INFO L226 Difference]: Without dead ends: 1015 [2024-12-02 10:43:18,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 612 SyntacticMatches, 16 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 10:43:18,401 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 1 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4264 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:43:18,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4264 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:43:18,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2024-12-02 10:43:18,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 1015. [2024-12-02 10:43:18,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 761 states have (on average 1.3101182654402102) internal successors, (997), 786 states have internal predecessors, (997), 174 states have call successors, (174), 78 states have call predecessors, (174), 78 states have return successors, (188), 169 states have call predecessors, (188), 173 states have call successors, (188) [2024-12-02 10:43:18,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1359 transitions. [2024-12-02 10:43:18,421 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1359 transitions. Word has length 318 [2024-12-02 10:43:18,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:43:18,421 INFO L471 AbstractCegarLoop]: Abstraction has 1015 states and 1359 transitions. [2024-12-02 10:43:18,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.151515151515151) internal successors, (236), 33 states have internal predecessors, (236), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-12-02 10:43:18,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1359 transitions. [2024-12-02 10:43:18,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-12-02 10:43:18,424 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:43:18,424 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:43:18,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 10:43:18,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:43:18,625 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:43:18,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:43:18,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1138483821, now seen corresponding path program 2 times [2024-12-02 10:43:18,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:43:18,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962941422] [2024-12-02 10:43:18,626 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:43:18,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:43:19,171 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 10:43:19,171 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:43:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 1042 trivial. 0 not checked. [2024-12-02 10:43:19,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:43:19,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962941422] [2024-12-02 10:43:19,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962941422] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:43:19,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:43:19,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 10:43:19,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291805867] [2024-12-02 10:43:19,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:43:19,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 10:43:19,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:43:19,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 10:43:19,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:43:19,583 INFO L87 Difference]: Start difference. First operand 1015 states and 1359 transitions. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 7 states have internal predecessors, (150), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) [2024-12-02 10:43:19,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:43:19,791 INFO L93 Difference]: Finished difference Result 2057 states and 2773 transitions. [2024-12-02 10:43:19,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 10:43:19,791 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 7 states have internal predecessors, (150), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) Word has length 334 [2024-12-02 10:43:19,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:43:19,796 INFO L225 Difference]: With dead ends: 2057 [2024-12-02 10:43:19,796 INFO L226 Difference]: Without dead ends: 1069 [2024-12-02 10:43:19,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:43:19,799 INFO L435 NwaCegarLoop]: 851 mSDtfsCounter, 11 mSDsluCounter, 5946 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 6797 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:43:19,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 6797 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:43:19,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2024-12-02 10:43:19,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1031. [2024-12-02 10:43:19,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 775 states have (on average 1.3096774193548386) internal successors, (1015), 800 states have internal predecessors, (1015), 175 states have call successors, (175), 78 states have call predecessors, (175), 79 states have return successors, (192), 171 states have call predecessors, (192), 174 states have call successors, (192) [2024-12-02 10:43:19,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1382 transitions. [2024-12-02 10:43:19,820 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1382 transitions. Word has length 334 [2024-12-02 10:43:19,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:43:19,820 INFO L471 AbstractCegarLoop]: Abstraction has 1031 states and 1382 transitions. [2024-12-02 10:43:19,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 7 states have internal predecessors, (150), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) [2024-12-02 10:43:19,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1382 transitions. [2024-12-02 10:43:19,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-12-02 10:43:19,824 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:43:19,824 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:43:19,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 10:43:19,824 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:43:19,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:43:19,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1361006797, now seen corresponding path program 1 times [2024-12-02 10:43:19,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:43:19,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238845014] [2024-12-02 10:43:19,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:43:19,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:43:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:43:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1206 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1194 trivial. 0 not checked. [2024-12-02 10:43:21,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:43:21,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238845014] [2024-12-02 10:43:21,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238845014] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:43:21,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334130401] [2024-12-02 10:43:21,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:43:21,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:43:21,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:43:21,231 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:43:21,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 10:43:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:43:23,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 3883 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 10:43:23,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:43:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1206 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2024-12-02 10:43:23,467 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:43:23,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334130401] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:43:23,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:43:23,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-12-02 10:43:23,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834592720] [2024-12-02 10:43:23,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:43:23,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:43:23,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:43:23,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:43:23,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:43:23,468 INFO L87 Difference]: Start difference. First operand 1031 states and 1382 transitions. Second operand has 6 states, 5 states have (on average 30.4) internal successors, (152), 6 states have internal predecessors, (152), 5 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) [2024-12-02 10:43:23,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:43:23,853 INFO L93 Difference]: Finished difference Result 2083 states and 2807 transitions. [2024-12-02 10:43:23,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:43:23,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.4) internal successors, (152), 6 states have internal predecessors, (152), 5 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) Word has length 374 [2024-12-02 10:43:23,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:43:23,859 INFO L225 Difference]: With dead ends: 2083 [2024-12-02 10:43:23,859 INFO L226 Difference]: Without dead ends: 1059 [2024-12-02 10:43:23,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:43:23,861 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 16 mSDsluCounter, 3374 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4227 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:43:23,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4227 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:43:23,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2024-12-02 10:43:23,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1038. [2024-12-02 10:43:23,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 781 states have (on average 1.3085787451984634) internal successors, (1022), 807 states have internal predecessors, (1022), 175 states have call successors, (175), 78 states have call predecessors, (175), 80 states have return successors, (193), 171 states have call predecessors, (193), 174 states have call successors, (193) [2024-12-02 10:43:23,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1390 transitions. [2024-12-02 10:43:23,895 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1390 transitions. Word has length 374 [2024-12-02 10:43:23,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:43:23,895 INFO L471 AbstractCegarLoop]: Abstraction has 1038 states and 1390 transitions. [2024-12-02 10:43:23,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.4) internal successors, (152), 6 states have internal predecessors, (152), 5 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) [2024-12-02 10:43:23,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1390 transitions. [2024-12-02 10:43:23,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-12-02 10:43:23,901 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:43:23,901 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:43:23,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 10:43:24,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 10:43:24,102 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:43:24,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:43:24,102 INFO L85 PathProgramCache]: Analyzing trace with hash -895246221, now seen corresponding path program 1 times [2024-12-02 10:43:24,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:43:24,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354750899] [2024-12-02 10:43:24,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:43:24,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:43:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:43:25,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1196 trivial. 0 not checked. [2024-12-02 10:43:25,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:43:25,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354750899] [2024-12-02 10:43:25,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354750899] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:43:25,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965388662] [2024-12-02 10:43:25,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:43:25,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:43:25,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:43:25,778 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:43:25,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 10:43:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:43:28,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 3961 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 10:43:28,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:43:28,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 1129 trivial. 0 not checked. [2024-12-02 10:43:28,401 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:43:28,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965388662] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:43:28,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:43:28,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2024-12-02 10:43:28,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904991713] [2024-12-02 10:43:28,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:43:28,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:43:28,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:43:28,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:43:28,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:43:28,403 INFO L87 Difference]: Start difference. First operand 1038 states and 1390 transitions. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 10:43:28,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:43:28,522 INFO L93 Difference]: Finished difference Result 2336 states and 3114 transitions. [2024-12-02 10:43:28,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 10:43:28,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 378 [2024-12-02 10:43:28,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:43:28,530 INFO L225 Difference]: With dead ends: 2336 [2024-12-02 10:43:28,530 INFO L226 Difference]: Without dead ends: 1325 [2024-12-02 10:43:28,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:43:28,534 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 332 mSDsluCounter, 3392 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 4247 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:43:28,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 4247 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:43:28,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2024-12-02 10:43:28,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1312. [2024-12-02 10:43:28,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 980 states have (on average 1.3010204081632653) internal successors, (1275), 1013 states have internal predecessors, (1275), 220 states have call successors, (220), 104 states have call predecessors, (220), 110 states have return successors, (245), 215 states have call predecessors, (245), 219 states have call successors, (245) [2024-12-02 10:43:28,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1740 transitions. [2024-12-02 10:43:28,565 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1740 transitions. Word has length 378 [2024-12-02 10:43:28,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:43:28,565 INFO L471 AbstractCegarLoop]: Abstraction has 1312 states and 1740 transitions. [2024-12-02 10:43:28,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 10:43:28,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1740 transitions. [2024-12-02 10:43:28,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-12-02 10:43:28,570 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:43:28,570 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:43:28,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 10:43:28,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:43:28,771 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2024-12-02 10:43:28,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:43:28,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1215610150, now seen corresponding path program 2 times [2024-12-02 10:43:28,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:43:28,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769551365] [2024-12-02 10:43:28,771 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:43:28,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:43:29,482 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 10:43:29,483 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:43:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1307 trivial. 0 not checked. [2024-12-02 10:43:30,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:43:30,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769551365] [2024-12-02 10:43:30,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769551365] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:43:30,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526466400] [2024-12-02 10:43:30,703 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:43:30,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:43:30,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:43:30,704 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:43:30,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870d2949-7ae6-40db-8c51-466d3c351759/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process