./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2c_append_unequal.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version d790fecc
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/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_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2c_append_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9aabbeff87ba819b44dc608a3105d0ba81b71cd88693ecf2e6bf3860a7863e64
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-12-02 07:04:32,494 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-12-02 07:04:32,552 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2024-12-02 07:04:32,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-12-02 07:04:32,557 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-12-02 07:04:32,580 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-12-02 07:04:32,581 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-12-02 07:04:32,581 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-12-02 07:04:32,581 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-12-02 07:04:32,581 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-12-02 07:04:32,581 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-12-02 07:04:32,582 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-12-02 07:04:32,582 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-12-02 07:04:32,582 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-12-02 07:04:32,582 INFO L153 SettingsManager]: * Use SBE=true
[2024-12-02 07:04:32,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-12-02 07:04:32,582 INFO L153 SettingsManager]: * sizeof long=4
[2024-12-02 07:04:32,582 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-12-02 07:04:32,583 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-12-02 07:04:32,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-12-02 07:04:32,583 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2024-12-02 07:04:32,583 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2024-12-02 07:04:32,583 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2024-12-02 07:04:32,583 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-12-02 07:04:32,583 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-12-02 07:04:32,583 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2024-12-02 07:04:32,583 INFO L153 SettingsManager]: * sizeof long double=12
[2024-12-02 07:04:32,583 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-12-02 07:04:32,583 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-12-02 07:04:32,583 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-12-02 07:04:32,584 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 07:04:32,584 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 07:04:32,584 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 07:04:32,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 07:04:32,584 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-12-02 07:04:32,584 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 07:04:32,584 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 07:04:32,584 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 07:04:32,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 07:04:32,584 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-12-02 07:04:32,584 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-12-02 07:04:32,585 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-12-02 07:04:32,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-12-02 07:04:32,585 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-12-02 07:04:32,585 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-12-02 07:04:32,585 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-12-02 07:04:32,585 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-12-02 07:04:32,585 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_fc853013-f645-40d4-875c-7304059ebae7/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 valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
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 -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9aabbeff87ba819b44dc608a3105d0ba81b71cd88693ecf2e6bf3860a7863e64
[2024-12-02 07:04:32,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-12-02 07:04:32,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-12-02 07:04:32,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-12-02 07:04:32,855 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-12-02 07:04:32,855 INFO L274 PluginConnector]: CDTParser initialized
[2024-12-02 07:04:32,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/list-simple/dll2c_append_unequal.i
[2024-12-02 07:04:35,574 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/data/1056ca43e/baaac542ad4446d09a74bf66f32c8856/FLAG9eca1dec5
[2024-12-02 07:04:35,827 INFO L384 CDTParser]: Found 1 translation units.
[2024-12-02 07:04:35,827 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/sv-benchmarks/c/list-simple/dll2c_append_unequal.i
[2024-12-02 07:04:35,840 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/data/1056ca43e/baaac542ad4446d09a74bf66f32c8856/FLAG9eca1dec5
[2024-12-02 07:04:35,854 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/data/1056ca43e/baaac542ad4446d09a74bf66f32c8856
[2024-12-02 07:04:35,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-12-02 07:04:35,858 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-12-02 07:04:35,859 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-12-02 07:04:35,860 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-12-02 07:04:35,864 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-12-02 07:04:35,864 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:04:35" (1/1) ...
[2024-12-02 07:04:35,865 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42560ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:35, skipping insertion in model container
[2024-12-02 07:04:35,865 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:04:35" (1/1) ...
[2024-12-02 07:04:35,889 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-12-02 07:04:36,122 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 07:04:36,130 INFO L200 MainTranslator]: Completed pre-run
[2024-12-02 07:04:36,168 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 07:04:36,193 INFO L204 MainTranslator]: Completed translation
[2024-12-02 07:04:36,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:36 WrapperNode
[2024-12-02 07:04:36,193 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-12-02 07:04:36,194 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-12-02 07:04:36,194 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-12-02 07:04:36,194 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-12-02 07:04:36,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:36" (1/1) ...
[2024-12-02 07:04:36,209 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:36" (1/1) ...
[2024-12-02 07:04:36,227 INFO L138 Inliner]: procedures = 127, calls = 50, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 154
[2024-12-02 07:04:36,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-12-02 07:04:36,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-12-02 07:04:36,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-12-02 07:04:36,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-12-02 07:04:36,234 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:36" (1/1) ...
[2024-12-02 07:04:36,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:36" (1/1) ...
[2024-12-02 07:04:36,238 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:36" (1/1) ...
[2024-12-02 07:04:36,257 INFO L175 MemorySlicer]: Split 31 memory accesses to 3 slices as follows [2, 9, 20]. 65 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 14 writes are split as follows [0, 1, 13].
[2024-12-02 07:04:36,257 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:36" (1/1) ...
[2024-12-02 07:04:36,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:36" (1/1) ...
[2024-12-02 07:04:36,267 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:36" (1/1) ...
[2024-12-02 07:04:36,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:36" (1/1) ...
[2024-12-02 07:04:36,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:36" (1/1) ...
[2024-12-02 07:04:36,272 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:36" (1/1) ...
[2024-12-02 07:04:36,273 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:36" (1/1) ...
[2024-12-02 07:04:36,276 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-12-02 07:04:36,277 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-12-02 07:04:36,277 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-12-02 07:04:36,277 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-12-02 07:04:36,278 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:36" (1/1) ...
[2024-12-02 07:04:36,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 07:04:36,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:04:36,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-12-02 07:04:36,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-12-02 07:04:36,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-12-02 07:04:36,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-12-02 07:04:36,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2
[2024-12-02 07:04:36,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-12-02 07:04:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-12-02 07:04:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2
[2024-12-02 07:04:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure node_create
[2024-12-02 07:04:36,328 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create
[2024-12-02 07:04:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2024-12-02 07:04:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-12-02 07:04:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-12-02 07:04:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0
[2024-12-02 07:04:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1
[2024-12-02 07:04:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2
[2024-12-02 07:04:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0
[2024-12-02 07:04:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1
[2024-12-02 07:04:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2
[2024-12-02 07:04:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-12-02 07:04:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0
[2024-12-02 07:04:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1
[2024-12-02 07:04:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2
[2024-12-02 07:04:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-12-02 07:04:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-12-02 07:04:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-12-02 07:04:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-12-02 07:04:36,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-12-02 07:04:36,433 INFO L234 CfgBuilder]: Building ICFG
[2024-12-02 07:04:36,434 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-12-02 07:04:36,770 INFO L? ?]: Removed 158 outVars from TransFormulas that were not future-live.
[2024-12-02 07:04:36,770 INFO L283 CfgBuilder]: Performing block encoding
[2024-12-02 07:04:36,781 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-12-02 07:04:36,782 INFO L312 CfgBuilder]: Removed 3 assume(true) statements.
[2024-12-02 07:04:36,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:04:36 BoogieIcfgContainer
[2024-12-02 07:04:36,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-12-02 07:04:36,785 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-12-02 07:04:36,785 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-12-02 07:04:36,789 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-12-02 07:04:36,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:04:35" (1/3) ...
[2024-12-02 07:04:36,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41271d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:04:36, skipping insertion in model container
[2024-12-02 07:04:36,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:36" (2/3) ...
[2024-12-02 07:04:36,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41271d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:04:36, skipping insertion in model container
[2024-12-02 07:04:36,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:04:36" (3/3) ...
[2024-12-02 07:04:36,791 INFO L128 eAbstractionObserver]: Analyzing ICFG dll2c_append_unequal.i
[2024-12-02 07:04:36,806 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-12-02 07:04:36,808 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG dll2c_append_unequal.i that has 2 procedures, 141 locations, 1 initial locations, 3 loop locations, and 64 error locations.
[2024-12-02 07:04:36,847 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-12-02 07:04:36,859 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=None, 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;@75b3736f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-12-02 07:04:36,859 INFO L334 AbstractCegarLoop]: Starting to check reachability of 64 error locations.
[2024-12-02 07:04:36,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 72 states have (on average 2.0833333333333335) internal successors, (150), 136 states have internal predecessors, (150), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:04:36,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2024-12-02 07:04:36,868 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:36,869 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-12-02 07:04:36,869 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:36,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:36,874 INFO L85 PathProgramCache]: Analyzing trace with hash 895918834, now seen corresponding path program 1 times
[2024-12-02 07:04:36,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:36,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787236827]
[2024-12-02 07:04:36,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:36,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:37,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:04:37,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:37,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787236827]
[2024-12-02 07:04:37,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787236827] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:04:37,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:04:37,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-12-02 07:04:37,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665540448]
[2024-12-02 07:04:37,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:04:37,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-12-02 07:04:37,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:37,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-12-02 07:04:37,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 07:04:37,105 INFO L87 Difference]: Start difference. First operand has 141 states, 72 states have (on average 2.0833333333333335) internal successors, (150), 136 states have internal predecessors, (150), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 07:04:37,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:37,255 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions.
[2024-12-02 07:04:37,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-12-02 07:04:37,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2024-12-02 07:04:37,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:37,264 INFO L225 Difference]: With dead ends: 137
[2024-12-02 07:04:37,264 INFO L226 Difference]: Without dead ends: 134
[2024-12-02 07:04:37,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 07:04:37,269 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 3 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:37,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 216 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 07:04:37,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states.
[2024-12-02 07:04:37,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134.
[2024-12-02 07:04:37,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 69 states have (on average 1.9855072463768115) internal successors, (137), 129 states have internal predecessors, (137), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:04:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions.
[2024-12-02 07:04:37,308 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 6
[2024-12-02 07:04:37,308 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:37,309 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions.
[2024-12-02 07:04:37,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 07:04:37,309 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions.
[2024-12-02 07:04:37,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2024-12-02 07:04:37,309 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:37,309 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-12-02 07:04:37,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-12-02 07:04:37,310 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:37,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:37,310 INFO L85 PathProgramCache]: Analyzing trace with hash 895918835, now seen corresponding path program 1 times
[2024-12-02 07:04:37,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:37,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995644582]
[2024-12-02 07:04:37,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:37,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:04:37,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:37,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995644582]
[2024-12-02 07:04:37,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995644582] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:04:37,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:04:37,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-12-02 07:04:37,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689035521]
[2024-12-02 07:04:37,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:04:37,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-12-02 07:04:37,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:37,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-12-02 07:04:37,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 07:04:37,415 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 07:04:37,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:37,530 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions.
[2024-12-02 07:04:37,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-12-02 07:04:37,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2024-12-02 07:04:37,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:37,531 INFO L225 Difference]: With dead ends: 131
[2024-12-02 07:04:37,531 INFO L226 Difference]: Without dead ends: 131
[2024-12-02 07:04:37,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 07:04:37,532 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 3 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:37,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 217 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 07:04:37,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2024-12-02 07:04:37,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131.
[2024-12-02 07:04:37,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 69 states have (on average 1.9420289855072463) internal successors, (134), 126 states have internal predecessors, (134), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:04:37,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 140 transitions.
[2024-12-02 07:04:37,541 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 140 transitions. Word has length 6
[2024-12-02 07:04:37,541 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:37,541 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 140 transitions.
[2024-12-02 07:04:37,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 07:04:37,541 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 140 transitions.
[2024-12-02 07:04:37,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-12-02 07:04:37,542 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:37,542 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:04:37,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-12-02 07:04:37,542 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:37,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:37,543 INFO L85 PathProgramCache]: Analyzing trace with hash -259128425, now seen corresponding path program 1 times
[2024-12-02 07:04:37,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:37,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172651104]
[2024-12-02 07:04:37,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:37,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:37,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:04:37,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:37,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172651104]
[2024-12-02 07:04:37,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172651104] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:04:37,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:04:37,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-12-02 07:04:37,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23229163]
[2024-12-02 07:04:37,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:04:37,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-12-02 07:04:37,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:37,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-12-02 07:04:37,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 07:04:37,640 INFO L87 Difference]: Start difference. First operand 131 states and 140 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-12-02 07:04:37,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:37,652 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions.
[2024-12-02 07:04:37,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-12-02 07:04:37,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14
[2024-12-02 07:04:37,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:37,654 INFO L225 Difference]: With dead ends: 142
[2024-12-02 07:04:37,654 INFO L226 Difference]: Without dead ends: 142
[2024-12-02 07:04:37,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 07:04:37,655 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 10 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:37,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 271 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 07:04:37,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states.
[2024-12-02 07:04:37,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 132.
[2024-12-02 07:04:37,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 70 states have (on average 1.9285714285714286) internal successors, (135), 127 states have internal predecessors, (135), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:04:37,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 141 transitions.
[2024-12-02 07:04:37,664 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 141 transitions. Word has length 14
[2024-12-02 07:04:37,665 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:37,665 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 141 transitions.
[2024-12-02 07:04:37,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-12-02 07:04:37,665 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 141 transitions.
[2024-12-02 07:04:37,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2024-12-02 07:04:37,666 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:37,666 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:04:37,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-12-02 07:04:37,666 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:37,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:37,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1338086141, now seen corresponding path program 1 times
[2024-12-02 07:04:37,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:37,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73638391]
[2024-12-02 07:04:37,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:37,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:37,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-12-02 07:04:37,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:37,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73638391]
[2024-12-02 07:04:37,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73638391] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:04:37,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:04:37,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 07:04:37,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516977889]
[2024-12-02 07:04:37,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:04:37,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 07:04:37,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:37,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 07:04:37,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-12-02 07:04:37,818 INFO L87 Difference]: Start difference. First operand 132 states and 141 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 07:04:38,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:38,041 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions.
[2024-12-02 07:04:38,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 07:04:38,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24
[2024-12-02 07:04:38,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:38,043 INFO L225 Difference]: With dead ends: 131
[2024-12-02 07:04:38,043 INFO L226 Difference]: Without dead ends: 131
[2024-12-02 07:04:38,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 07:04:38,044 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 7 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:38,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 402 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 07:04:38,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2024-12-02 07:04:38,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131.
[2024-12-02 07:04:38,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 70 states have (on average 1.9142857142857144) internal successors, (134), 126 states have internal predecessors, (134), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:04:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 140 transitions.
[2024-12-02 07:04:38,051 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 140 transitions. Word has length 24
[2024-12-02 07:04:38,052 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:38,052 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 140 transitions.
[2024-12-02 07:04:38,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 07:04:38,052 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 140 transitions.
[2024-12-02 07:04:38,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2024-12-02 07:04:38,053 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:38,053 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:04:38,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-12-02 07:04:38,053 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:38,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:38,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1338086140, now seen corresponding path program 1 times
[2024-12-02 07:04:38,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:38,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312330018]
[2024-12-02 07:04:38,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:38,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:04:38,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:38,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312330018]
[2024-12-02 07:04:38,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312330018] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:04:38,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:04:38,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 07:04:38,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667545535]
[2024-12-02 07:04:38,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:04:38,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 07:04:38,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:38,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 07:04:38,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-12-02 07:04:38,234 INFO L87 Difference]: Start difference. First operand 131 states and 140 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 07:04:38,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:38,437 INFO L93 Difference]: Finished difference Result 130 states and 139 transitions.
[2024-12-02 07:04:38,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 07:04:38,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24
[2024-12-02 07:04:38,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:38,439 INFO L225 Difference]: With dead ends: 130
[2024-12-02 07:04:38,439 INFO L226 Difference]: Without dead ends: 130
[2024-12-02 07:04:38,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 07:04:38,440 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 6 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:38,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 426 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 07:04:38,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states.
[2024-12-02 07:04:38,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130.
[2024-12-02 07:04:38,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 70 states have (on average 1.9) internal successors, (133), 125 states have internal predecessors, (133), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:04:38,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 139 transitions.
[2024-12-02 07:04:38,447 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 139 transitions. Word has length 24
[2024-12-02 07:04:38,447 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:38,447 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 139 transitions.
[2024-12-02 07:04:38,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 07:04:38,447 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 139 transitions.
[2024-12-02 07:04:38,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2024-12-02 07:04:38,448 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:38,448 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:04:38,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-12-02 07:04:38,448 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:38,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:38,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1705560284, now seen corresponding path program 1 times
[2024-12-02 07:04:38,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:38,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113610268]
[2024-12-02 07:04:38,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:38,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:04:38,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:38,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113610268]
[2024-12-02 07:04:38,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113610268] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:04:38,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155036620]
[2024-12-02 07:04:38,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:38,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:04:38,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:04:38,678 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:04:38,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-12-02 07:04:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:38,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-12-02 07:04:38,801 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:04:38,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:04:38,869 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| 1))) is different from true
[2024-12-02 07:04:38,924 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size
[2024-12-02 07:04:38,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14
[2024-12-02 07:04:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked.
[2024-12-02 07:04:38,943 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:04:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:04:39,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155036620] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:04:39,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:04:39,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 11
[2024-12-02 07:04:39,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54277187]
[2024-12-02 07:04:39,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:04:39,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-12-02 07:04:39,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:39,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-12-02 07:04:39,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132
[2024-12-02 07:04:39,144 INFO L87 Difference]: Start difference. First operand 130 states and 139 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-12-02 07:04:39,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:39,544 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions.
[2024-12-02 07:04:39,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 07:04:39,545 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26
[2024-12-02 07:04:39,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:39,546 INFO L225 Difference]: With dead ends: 135
[2024-12-02 07:04:39,546 INFO L226 Difference]: Without dead ends: 135
[2024-12-02 07:04:39,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=101, Unknown=1, NotChecked=20, Total=156
[2024-12-02 07:04:39,547 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 1 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:39,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 637 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 567 Invalid, 0 Unknown, 140 Unchecked, 0.3s Time]
[2024-12-02 07:04:39,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2024-12-02 07:04:39,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135.
[2024-12-02 07:04:39,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 74 states have (on average 1.8783783783783783) internal successors, (139), 129 states have internal predecessors, (139), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 07:04:39,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 147 transitions.
[2024-12-02 07:04:39,554 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 147 transitions. Word has length 26
[2024-12-02 07:04:39,554 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:39,554 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 147 transitions.
[2024-12-02 07:04:39,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-12-02 07:04:39,554 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 147 transitions.
[2024-12-02 07:04:39,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2024-12-02 07:04:39,555 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:39,555 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:04:39,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-12-02 07:04:39,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2024-12-02 07:04:39,756 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:39,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:39,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1705560283, now seen corresponding path program 1 times
[2024-12-02 07:04:39,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:39,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898355696]
[2024-12-02 07:04:39,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:39,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:04:40,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:40,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898355696]
[2024-12-02 07:04:40,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898355696] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:04:40,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109115727]
[2024-12-02 07:04:40,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:40,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:04:40,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:04:40,206 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:04:40,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-12-02 07:04:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:40,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 27 conjuncts are in the unsatisfiable core
[2024-12-02 07:04:40,329 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:04:40,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-12-02 07:04:40,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:04:40,446 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true
[2024-12-02 07:04:40,501 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:04:40,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 07:04:40,510 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-12-02 07:04:40,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-12-02 07:04:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked.
[2024-12-02 07:04:40,528 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:04:40,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109115727] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:04:40,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:04:40,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 11
[2024-12-02 07:04:40,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856750155]
[2024-12-02 07:04:40,658 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:04:40,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-12-02 07:04:40,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:40,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-12-02 07:04:40,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=127, Unknown=1, NotChecked=22, Total=182
[2024-12-02 07:04:40,660 INFO L87 Difference]: Start difference. First operand 135 states and 147 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:04:41,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:41,104 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions.
[2024-12-02 07:04:41,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-12-02 07:04:41,104 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26
[2024-12-02 07:04:41,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:41,105 INFO L225 Difference]: With dead ends: 135
[2024-12-02 07:04:41,106 INFO L226 Difference]: Without dead ends: 135
[2024-12-02 07:04:41,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=171, Unknown=1, NotChecked=26, Total=240
[2024-12-02 07:04:41,106 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:41,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 473 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 485 Invalid, 0 Unknown, 139 Unchecked, 0.4s Time]
[2024-12-02 07:04:41,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2024-12-02 07:04:41,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135.
[2024-12-02 07:04:41,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 74 states have (on average 1.864864864864865) internal successors, (138), 129 states have internal predecessors, (138), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 07:04:41,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions.
[2024-12-02 07:04:41,113 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 26
[2024-12-02 07:04:41,113 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:41,113 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions.
[2024-12-02 07:04:41,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:04:41,114 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions.
[2024-12-02 07:04:41,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2024-12-02 07:04:41,114 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:41,114 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:04:41,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-12-02 07:04:41,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:04:41,315 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:41,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:41,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1634228313, now seen corresponding path program 1 times
[2024-12-02 07:04:41,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:41,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857639862]
[2024-12-02 07:04:41,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:41,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:04:41,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:41,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857639862]
[2024-12-02 07:04:41,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857639862] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:04:41,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896561923]
[2024-12-02 07:04:41,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:41,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:04:41,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:04:41,421 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:04:41,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-12-02 07:04:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:41,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-12-02 07:04:41,547 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:04:41,569 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:04:41,569 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:04:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:04:41,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896561923] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:04:41,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:04:41,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6
[2024-12-02 07:04:41,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972167611]
[2024-12-02 07:04:41,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:04:41,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 07:04:41,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:41,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 07:04:41,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-12-02 07:04:41,603 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 07:04:41,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:41,648 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions.
[2024-12-02 07:04:41,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 07:04:41,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28
[2024-12-02 07:04:41,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:41,649 INFO L225 Difference]: With dead ends: 135
[2024-12-02 07:04:41,649 INFO L226 Difference]: Without dead ends: 135
[2024-12-02 07:04:41,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 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 07:04:41,650 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 1 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:41,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 629 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 07:04:41,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2024-12-02 07:04:41,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135.
[2024-12-02 07:04:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 74 states have (on average 1.8513513513513513) internal successors, (137), 129 states have internal predecessors, (137), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 07:04:41,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 145 transitions.
[2024-12-02 07:04:41,660 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 145 transitions. Word has length 28
[2024-12-02 07:04:41,660 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:41,660 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 145 transitions.
[2024-12-02 07:04:41,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 07:04:41,660 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 145 transitions.
[2024-12-02 07:04:41,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2024-12-02 07:04:41,661 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:41,661 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:04:41,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-12-02 07:04:41,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2024-12-02 07:04:41,861 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:41,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:41,862 INFO L85 PathProgramCache]: Analyzing trace with hash -883311442, now seen corresponding path program 1 times
[2024-12-02 07:04:41,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:41,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55476742]
[2024-12-02 07:04:41,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:41,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-12-02 07:04:41,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:41,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55476742]
[2024-12-02 07:04:41,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55476742] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:04:41,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159608855]
[2024-12-02 07:04:41,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:41,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:04:41,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:04:41,930 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:04:41,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-12-02 07:04:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:42,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 17 conjuncts are in the unsatisfiable core
[2024-12-02 07:04:42,054 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:04:42,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:04:42,116 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true
[2024-12-02 07:04:42,160 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size
[2024-12-02 07:04:42,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16
[2024-12-02 07:04:42,171 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 7 not checked.
[2024-12-02 07:04:42,171 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:04:42,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159608855] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:04:42,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:04:42,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 9
[2024-12-02 07:04:42,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234298079]
[2024-12-02 07:04:42,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:04:42,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-12-02 07:04:42,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:42,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-12-02 07:04:42,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=72, Unknown=1, NotChecked=16, Total=110
[2024-12-02 07:04:42,221 INFO L87 Difference]: Start difference. First operand 135 states and 145 transitions. Second operand has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-12-02 07:04:42,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:42,520 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions.
[2024-12-02 07:04:42,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-12-02 07:04:42,520 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29
[2024-12-02 07:04:42,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:42,521 INFO L225 Difference]: With dead ends: 134
[2024-12-02 07:04:42,521 INFO L226 Difference]: Without dead ends: 134
[2024-12-02 07:04:42,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=126, Unknown=1, NotChecked=22, Total=182
[2024-12-02 07:04:42,522 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 9 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:42,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 625 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 443 Invalid, 0 Unknown, 137 Unchecked, 0.3s Time]
[2024-12-02 07:04:42,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states.
[2024-12-02 07:04:42,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134.
[2024-12-02 07:04:42,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 74 states have (on average 1.837837837837838) internal successors, (136), 128 states have internal predecessors, (136), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 07:04:42,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 144 transitions.
[2024-12-02 07:04:42,525 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 144 transitions. Word has length 29
[2024-12-02 07:04:42,525 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:42,525 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 144 transitions.
[2024-12-02 07:04:42,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-12-02 07:04:42,525 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 144 transitions.
[2024-12-02 07:04:42,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2024-12-02 07:04:42,526 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:42,526 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:04:42,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-12-02 07:04:42,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:04:42,726 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:42,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:42,727 INFO L85 PathProgramCache]: Analyzing trace with hash -883311441, now seen corresponding path program 1 times
[2024-12-02 07:04:42,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:42,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926884180]
[2024-12-02 07:04:42,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:42,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:04:42,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:42,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926884180]
[2024-12-02 07:04:42,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926884180] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:04:42,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501431215]
[2024-12-02 07:04:42,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:42,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:04:42,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:04:42,871 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:04:42,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-12-02 07:04:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:42,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 31 conjuncts are in the unsatisfiable core
[2024-12-02 07:04:43,000 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:04:43,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:04:43,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-12-02 07:04:43,145 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true
[2024-12-02 07:04:43,185 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:04:43,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 07:04:43,192 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-12-02 07:04:43,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-12-02 07:04:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked.
[2024-12-02 07:04:43,233 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:04:43,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501431215] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:04:43,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:04:43,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14
[2024-12-02 07:04:43,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622531190]
[2024-12-02 07:04:43,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:04:43,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-12-02 07:04:43,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:43,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-12-02 07:04:43,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=201, Unknown=1, NotChecked=28, Total=272
[2024-12-02 07:04:43,338 INFO L87 Difference]: Start difference. First operand 134 states and 144 transitions. Second operand has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 12 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-12-02 07:04:43,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:43,760 INFO L93 Difference]: Finished difference Result 151 states and 166 transitions.
[2024-12-02 07:04:43,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-12-02 07:04:43,760 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 12 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29
[2024-12-02 07:04:43,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:43,762 INFO L225 Difference]: With dead ends: 151
[2024-12-02 07:04:43,762 INFO L226 Difference]: Without dead ends: 151
[2024-12-02 07:04:43,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=316, Unknown=1, NotChecked=36, Total=420
[2024-12-02 07:04:43,763 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 16 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:43,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 832 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 532 Invalid, 0 Unknown, 159 Unchecked, 0.3s Time]
[2024-12-02 07:04:43,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states.
[2024-12-02 07:04:43,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 144.
[2024-12-02 07:04:43,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 83 states have (on average 1.8072289156626506) internal successors, (150), 137 states have internal predecessors, (150), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2024-12-02 07:04:43,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 160 transitions.
[2024-12-02 07:04:43,768 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 160 transitions. Word has length 29
[2024-12-02 07:04:43,768 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:43,768 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 160 transitions.
[2024-12-02 07:04:43,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 12 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-12-02 07:04:43,769 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 160 transitions.
[2024-12-02 07:04:43,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2024-12-02 07:04:43,769 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:43,769 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:04:43,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-12-02 07:04:43,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2024-12-02 07:04:43,970 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:43,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:43,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1612850921, now seen corresponding path program 1 times
[2024-12-02 07:04:43,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:43,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416771736]
[2024-12-02 07:04:43,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:43,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-12-02 07:04:44,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:44,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416771736]
[2024-12-02 07:04:44,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416771736] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:04:44,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:04:44,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-12-02 07:04:44,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354346309]
[2024-12-02 07:04:44,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:04:44,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-12-02 07:04:44,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:44,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-12-02 07:04:44,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-12-02 07:04:44,071 INFO L87 Difference]: Start difference. First operand 144 states and 160 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 07:04:44,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:44,269 INFO L93 Difference]: Finished difference Result 143 states and 159 transitions.
[2024-12-02 07:04:44,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 07:04:44,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30
[2024-12-02 07:04:44,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:44,270 INFO L225 Difference]: With dead ends: 143
[2024-12-02 07:04:44,270 INFO L226 Difference]: Without dead ends: 143
[2024-12-02 07:04:44,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-12-02 07:04:44,271 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 7 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:44,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 456 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 07:04:44,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states.
[2024-12-02 07:04:44,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143.
[2024-12-02 07:04:44,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 83 states have (on average 1.7951807228915662) internal successors, (149), 136 states have internal predecessors, (149), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2024-12-02 07:04:44,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 159 transitions.
[2024-12-02 07:04:44,275 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 159 transitions. Word has length 30
[2024-12-02 07:04:44,275 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:44,275 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 159 transitions.
[2024-12-02 07:04:44,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 07:04:44,275 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 159 transitions.
[2024-12-02 07:04:44,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2024-12-02 07:04:44,276 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:44,276 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:04:44,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2024-12-02 07:04:44,276 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:44,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:44,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1612850920, now seen corresponding path program 1 times
[2024-12-02 07:04:44,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:44,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295712673]
[2024-12-02 07:04:44,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:44,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:44,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:04:44,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:44,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295712673]
[2024-12-02 07:04:44,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295712673] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:04:44,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:04:44,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-12-02 07:04:44,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498531950]
[2024-12-02 07:04:44,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:04:44,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-12-02 07:04:44,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:44,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-12-02 07:04:44,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-12-02 07:04:44,415 INFO L87 Difference]: Start difference. First operand 143 states and 159 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 07:04:44,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:44,622 INFO L93 Difference]: Finished difference Result 142 states and 158 transitions.
[2024-12-02 07:04:44,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 07:04:44,622 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30
[2024-12-02 07:04:44,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:44,623 INFO L225 Difference]: With dead ends: 142
[2024-12-02 07:04:44,623 INFO L226 Difference]: Without dead ends: 142
[2024-12-02 07:04:44,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-12-02 07:04:44,624 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 6 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:44,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 481 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 07:04:44,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states.
[2024-12-02 07:04:44,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142.
[2024-12-02 07:04:44,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 83 states have (on average 1.783132530120482) internal successors, (148), 135 states have internal predecessors, (148), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2024-12-02 07:04:44,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions.
[2024-12-02 07:04:44,628 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 30
[2024-12-02 07:04:44,628 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:44,628 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions.
[2024-12-02 07:04:44,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 07:04:44,628 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions.
[2024-12-02 07:04:44,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-12-02 07:04:44,629 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:44,629 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:04:44,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2024-12-02 07:04:44,629 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:44,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:44,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1172634181, now seen corresponding path program 1 times
[2024-12-02 07:04:44,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:44,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468304804]
[2024-12-02 07:04:44,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:44,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:44,706 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-12-02 07:04:44,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:44,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468304804]
[2024-12-02 07:04:44,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468304804] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:04:44,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165606215]
[2024-12-02 07:04:44,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:44,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:04:44,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:04:44,709 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:04:44,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-12-02 07:04:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:44,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-12-02 07:04:44,867 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:04:44,890 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-12-02 07:04:44,890 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:04:44,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165606215] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:04:44,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 07:04:44,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5
[2024-12-02 07:04:44,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887409770]
[2024-12-02 07:04:44,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:04:44,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 07:04:44,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:44,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 07:04:44,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-12-02 07:04:44,892 INFO L87 Difference]: Start difference. First operand 142 states and 158 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:04:44,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:44,904 INFO L93 Difference]: Finished difference Result 124 states and 131 transitions.
[2024-12-02 07:04:44,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-12-02 07:04:44,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41
[2024-12-02 07:04:44,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:44,905 INFO L225 Difference]: With dead ends: 124
[2024-12-02 07:04:44,905 INFO L226 Difference]: Without dead ends: 124
[2024-12-02 07:04:44,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 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 07:04:44,906 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:44,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 252 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 07:04:44,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2024-12-02 07:04:44,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124.
[2024-12-02 07:04:44,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 70 states have (on average 1.7857142857142858) internal successors, (125), 119 states have internal predecessors, (125), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:04:44,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 131 transitions.
[2024-12-02 07:04:44,908 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 131 transitions. Word has length 41
[2024-12-02 07:04:44,909 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:44,909 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 131 transitions.
[2024-12-02 07:04:44,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:04:44,909 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 131 transitions.
[2024-12-02 07:04:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2024-12-02 07:04:44,909 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:44,909 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:04:44,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-12-02 07:04:45,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2024-12-02 07:04:45,110 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:45,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:45,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1447651543, now seen corresponding path program 1 times
[2024-12-02 07:04:45,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:45,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135115780]
[2024-12-02 07:04:45,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:45,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:45,447 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-12-02 07:04:45,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:45,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135115780]
[2024-12-02 07:04:45,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135115780] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:04:45,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403296908]
[2024-12-02 07:04:45,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:45,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:04:45,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:04:45,449 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:04:45,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-12-02 07:04:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:45,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 29 conjuncts are in the unsatisfiable core
[2024-12-02 07:04:45,640 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:04:45,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:04:45,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-12-02 07:04:45,660 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))))) is different from true
[2024-12-02 07:04:45,702 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:04:45,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 07:04:45,744 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size
[2024-12-02 07:04:45,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13
[2024-12-02 07:04:45,805 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| 1))) is different from true
[2024-12-02 07:04:45,837 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size
[2024-12-02 07:04:45,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14
[2024-12-02 07:04:45,849 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 21 not checked.
[2024-12-02 07:04:45,849 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:04:46,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403296908] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:04:46,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:04:46,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 17
[2024-12-02 07:04:46,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876858214]
[2024-12-02 07:04:46,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:04:46,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-12-02 07:04:46,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:46,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-12-02 07:04:46,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=375, Unknown=2, NotChecked=82, Total=552
[2024-12-02 07:04:46,240 INFO L87 Difference]: Start difference. First operand 124 states and 131 transitions. Second operand has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 16 states have internal predecessors, (60), 3 states have call successors, (4), 1 states have call predecessors, (4), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6)
[2024-12-02 07:04:46,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:46,645 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions.
[2024-12-02 07:04:46,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 07:04:46,646 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 16 states have internal predecessors, (60), 3 states have call successors, (4), 1 states have call predecessors, (4), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43
[2024-12-02 07:04:46,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:46,646 INFO L225 Difference]: With dead ends: 134
[2024-12-02 07:04:46,646 INFO L226 Difference]: Without dead ends: 134
[2024-12-02 07:04:46,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 64 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=482, Unknown=2, NotChecked=94, Total=702
[2024-12-02 07:04:46,647 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 306 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 270 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:46,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 381 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 493 Invalid, 0 Unknown, 270 Unchecked, 0.3s Time]
[2024-12-02 07:04:46,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states.
[2024-12-02 07:04:46,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 116.
[2024-12-02 07:04:46,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 70 states have (on average 1.6714285714285715) internal successors, (117), 111 states have internal predecessors, (117), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:04:46,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 123 transitions.
[2024-12-02 07:04:46,650 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 123 transitions. Word has length 43
[2024-12-02 07:04:46,651 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:46,651 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 123 transitions.
[2024-12-02 07:04:46,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 16 states have internal predecessors, (60), 3 states have call successors, (4), 1 states have call predecessors, (4), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6)
[2024-12-02 07:04:46,651 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 123 transitions.
[2024-12-02 07:04:46,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2024-12-02 07:04:46,651 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:46,652 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:04:46,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-12-02 07:04:46,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2024-12-02 07:04:46,852 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:46,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:46,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1447651544, now seen corresponding path program 1 times
[2024-12-02 07:04:46,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:46,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140097712]
[2024-12-02 07:04:46,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:46,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:47,502 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:04:47,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:47,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140097712]
[2024-12-02 07:04:47,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140097712] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:04:47,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482946116]
[2024-12-02 07:04:47,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:47,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:04:47,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:04:47,505 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:04:47,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-12-02 07:04:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:47,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 26 conjuncts are in the unsatisfiable core
[2024-12-02 07:04:47,672 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:04:47,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-12-02 07:04:47,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-12-02 07:04:47,713 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|))) is different from true
[2024-12-02 07:04:47,755 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:04:47,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 07:04:47,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-12-02 07:04:47,809 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:04:47,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 07:04:47,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-12-02 07:04:47,920 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:04:47,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 07:04:47,941 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2024-12-02 07:04:47,941 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:04:47,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482946116] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:04:47,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 07:04:47,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17
[2024-12-02 07:04:47,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638136647]
[2024-12-02 07:04:47,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:04:47,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-12-02 07:04:47,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:47,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-12-02 07:04:47,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=224, Unknown=1, NotChecked=30, Total=306
[2024-12-02 07:04:47,942 INFO L87 Difference]: Start difference. First operand 116 states and 123 transitions. Second operand has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:04:48,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:48,086 INFO L93 Difference]: Finished difference Result 111 states and 118 transitions.
[2024-12-02 07:04:48,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 07:04:48,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43
[2024-12-02 07:04:48,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:48,087 INFO L225 Difference]: With dead ends: 111
[2024-12-02 07:04:48,087 INFO L226 Difference]: Without dead ends: 111
[2024-12-02 07:04:48,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=253, Unknown=1, NotChecked=32, Total=342
[2024-12-02 07:04:48,087 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 26 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:48,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 259 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 163 Invalid, 0 Unknown, 150 Unchecked, 0.1s Time]
[2024-12-02 07:04:48,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states.
[2024-12-02 07:04:48,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111.
[2024-12-02 07:04:48,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 70 states have (on average 1.6) internal successors, (112), 106 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:04:48,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 118 transitions.
[2024-12-02 07:04:48,091 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 118 transitions. Word has length 43
[2024-12-02 07:04:48,091 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:48,091 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 118 transitions.
[2024-12-02 07:04:48,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:04:48,091 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 118 transitions.
[2024-12-02 07:04:48,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-12-02 07:04:48,092 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:48,092 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:04:48,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-12-02 07:04:48,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2024-12-02 07:04:48,292 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:48,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:48,293 INFO L85 PathProgramCache]: Analyzing trace with hash -376270504, now seen corresponding path program 1 times
[2024-12-02 07:04:48,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:48,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426143739]
[2024-12-02 07:04:48,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:48,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:48,394 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-12-02 07:04:48,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:48,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426143739]
[2024-12-02 07:04:48,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426143739] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:04:48,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:04:48,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 07:04:48,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710095086]
[2024-12-02 07:04:48,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:04:48,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 07:04:48,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:48,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 07:04:48,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-12-02 07:04:48,396 INFO L87 Difference]: Start difference. First operand 111 states and 118 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-12-02 07:04:48,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:48,539 INFO L93 Difference]: Finished difference Result 107 states and 114 transitions.
[2024-12-02 07:04:48,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 07:04:48,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45
[2024-12-02 07:04:48,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:48,540 INFO L225 Difference]: With dead ends: 107
[2024-12-02 07:04:48,540 INFO L226 Difference]: Without dead ends: 107
[2024-12-02 07:04:48,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 07:04:48,541 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 19 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:48,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 309 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 07:04:48,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2024-12-02 07:04:48,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107.
[2024-12-02 07:04:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 70 states have (on average 1.542857142857143) internal successors, (108), 102 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:04:48,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 114 transitions.
[2024-12-02 07:04:48,544 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 114 transitions. Word has length 45
[2024-12-02 07:04:48,545 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:48,545 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 114 transitions.
[2024-12-02 07:04:48,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-12-02 07:04:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 114 transitions.
[2024-12-02 07:04:48,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-12-02 07:04:48,545 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:48,545 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:04:48,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2024-12-02 07:04:48,546 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:48,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:48,546 INFO L85 PathProgramCache]: Analyzing trace with hash -376270503, now seen corresponding path program 1 times
[2024-12-02 07:04:48,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:48,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134997275]
[2024-12-02 07:04:48,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:48,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2024-12-02 07:04:48,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:48,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134997275]
[2024-12-02 07:04:48,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134997275] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:04:48,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085168718]
[2024-12-02 07:04:48,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:48,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:04:48,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:04:48,741 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:04:48,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-12-02 07:04:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:48,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 17 conjuncts are in the unsatisfiable core
[2024-12-02 07:04:48,946 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:04:48,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-12-02 07:04:49,028 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2024-12-02 07:04:49,028 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:04:49,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085168718] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:04:49,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 07:04:49,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14
[2024-12-02 07:04:49,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502663533]
[2024-12-02 07:04:49,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:04:49,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 07:04:49,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:49,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 07:04:49,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182
[2024-12-02 07:04:49,029 INFO L87 Difference]: Start difference. First operand 107 states and 114 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-12-02 07:04:49,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:49,135 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions.
[2024-12-02 07:04:49,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 07:04:49,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45
[2024-12-02 07:04:49,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:49,136 INFO L225 Difference]: With dead ends: 103
[2024-12-02 07:04:49,136 INFO L226 Difference]: Without dead ends: 103
[2024-12-02 07:04:49,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182
[2024-12-02 07:04:49,137 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 18 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:49,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 321 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 07:04:49,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2024-12-02 07:04:49,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103.
[2024-12-02 07:04:49,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 70 states have (on average 1.4857142857142858) internal successors, (104), 98 states have internal predecessors, (104), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:04:49,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions.
[2024-12-02 07:04:49,140 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 45
[2024-12-02 07:04:49,140 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:49,140 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions.
[2024-12-02 07:04:49,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-12-02 07:04:49,140 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions.
[2024-12-02 07:04:49,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2024-12-02 07:04:49,141 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:49,141 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:04:49,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2024-12-02 07:04:49,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2024-12-02 07:04:49,341 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:49,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:49,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1220527209, now seen corresponding path program 1 times
[2024-12-02 07:04:49,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:49,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153738328]
[2024-12-02 07:04:49,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:49,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:04:49,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:49,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153738328]
[2024-12-02 07:04:49,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153738328] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:04:49,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156358246]
[2024-12-02 07:04:49,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:49,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:04:49,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:04:49,606 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:04:49,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-12-02 07:04:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:49,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 36 conjuncts are in the unsatisfiable core
[2024-12-02 07:04:49,858 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:04:49,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3
[2024-12-02 07:04:49,970 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| 1))) is different from true
[2024-12-02 07:04:49,992 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size
[2024-12-02 07:04:49,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18
[2024-12-02 07:04:50,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-12-02 07:04:50,031 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-12-02 07:04:50,032 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:04:50,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156358246] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:04:50,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 07:04:50,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 19
[2024-12-02 07:04:50,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656771479]
[2024-12-02 07:04:50,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:04:50,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-12-02 07:04:50,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:50,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-12-02 07:04:50,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=296, Unknown=1, NotChecked=34, Total=380
[2024-12-02 07:04:50,033 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:04:50,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:50,175 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions.
[2024-12-02 07:04:50,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-12-02 07:04:50,176 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 46
[2024-12-02 07:04:50,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:50,176 INFO L225 Difference]: With dead ends: 102
[2024-12-02 07:04:50,176 INFO L226 Difference]: Without dead ends: 102
[2024-12-02 07:04:50,176 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=364, Unknown=1, NotChecked=38, Total=462
[2024-12-02 07:04:50,177 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 15 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:50,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 354 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 234 Invalid, 0 Unknown, 166 Unchecked, 0.1s Time]
[2024-12-02 07:04:50,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states.
[2024-12-02 07:04:50,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102.
[2024-12-02 07:04:50,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 70 states have (on average 1.4714285714285715) internal successors, (103), 97 states have internal predecessors, (103), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:04:50,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions.
[2024-12-02 07:04:50,180 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 46
[2024-12-02 07:04:50,180 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:50,180 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions.
[2024-12-02 07:04:50,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:04:50,181 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions.
[2024-12-02 07:04:50,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2024-12-02 07:04:50,181 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:50,181 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:04:50,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2024-12-02 07:04:50,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2024-12-02 07:04:50,382 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:50,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:50,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1220527210, now seen corresponding path program 1 times
[2024-12-02 07:04:50,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:50,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028729392]
[2024-12-02 07:04:50,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:50,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:04:50,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:50,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028729392]
[2024-12-02 07:04:50,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028729392] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:04:50,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950803404]
[2024-12-02 07:04:50,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:50,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:04:50,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:04:50,904 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:04:50,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-12-02 07:04:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:51,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 51 conjuncts are in the unsatisfiable core
[2024-12-02 07:04:51,194 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:04:51,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-12-02 07:04:51,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3
[2024-12-02 07:04:51,508 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size
[2024-12-02 07:04:51,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 21
[2024-12-02 07:04:51,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-12-02 07:04:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:04:51,571 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:04:51,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950803404] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:04:51,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:04:51,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 23
[2024-12-02 07:04:51,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672953090]
[2024-12-02 07:04:51,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:04:51,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-12-02 07:04:51,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:51,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-12-02 07:04:51,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702
[2024-12-02 07:04:51,719 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand has 24 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 20 states have internal predecessors, (69), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6)
[2024-12-02 07:04:52,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:52,650 INFO L93 Difference]: Finished difference Result 109 states and 115 transitions.
[2024-12-02 07:04:52,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2024-12-02 07:04:52,651 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 20 states have internal predecessors, (69), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 46
[2024-12-02 07:04:52,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:52,651 INFO L225 Difference]: With dead ends: 109
[2024-12-02 07:04:52,651 INFO L226 Difference]: Without dead ends: 109
[2024-12-02 07:04:52,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=148, Invalid=1334, Unknown=0, NotChecked=0, Total=1482
[2024-12-02 07:04:52,652 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 65 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:52,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1013 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-12-02 07:04:52,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2024-12-02 07:04:52,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109.
[2024-12-02 07:04:52,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 77 states have (on average 1.4155844155844155) internal successors, (109), 103 states have internal predecessors, (109), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:04:52,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 115 transitions.
[2024-12-02 07:04:52,654 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 115 transitions. Word has length 46
[2024-12-02 07:04:52,654 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:52,654 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 115 transitions.
[2024-12-02 07:04:52,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 20 states have internal predecessors, (69), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6)
[2024-12-02 07:04:52,654 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 115 transitions.
[2024-12-02 07:04:52,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2024-12-02 07:04:52,654 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:52,654 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:04:52,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-12-02 07:04:52,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:04:52,855 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:52,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:52,855 INFO L85 PathProgramCache]: Analyzing trace with hash 400577194, now seen corresponding path program 1 times
[2024-12-02 07:04:52,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:52,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085636134]
[2024-12-02 07:04:52,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:52,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:53,839 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:04:53,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:53,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085636134]
[2024-12-02 07:04:53,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085636134] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:04:53,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87811391]
[2024-12-02 07:04:53,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:53,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:04:53,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:04:53,841 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:04:53,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-12-02 07:04:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:54,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 51 conjuncts are in the unsatisfiable core
[2024-12-02 07:04:54,048 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:04:54,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1
[2024-12-02 07:04:54,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 5
[2024-12-02 07:04:54,258 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size
[2024-12-02 07:04:54,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7
[2024-12-02 07:04:54,323 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$#2.base)| |node_create_~temp~0#1.base| (select |c_#memory_$Pointer$#2.base| |node_create_~temp~0#1.base|)) |c_#memory_$Pointer$#2.base|) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true
[2024-12-02 07:04:54,342 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:04:54,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23
[2024-12-02 07:04:54,372 INFO L349 Elim1Store]: treesize reduction 120, result has 31.4 percent of original size
[2024-12-02 07:04:54,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 64
[2024-12-02 07:04:54,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24
[2024-12-02 07:04:54,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15
[2024-12-02 07:04:54,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9
[2024-12-02 07:04:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-12-02 07:04:54,467 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:04:54,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87811391] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:04:54,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 07:04:54,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [20] total 30
[2024-12-02 07:04:54,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969381433]
[2024-12-02 07:04:54,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:04:54,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-12-02 07:04:54,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:54,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-12-02 07:04:54,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=799, Unknown=1, NotChecked=56, Total=930
[2024-12-02 07:04:54,469 INFO L87 Difference]: Start difference. First operand 109 states and 115 transitions. Second operand has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:04:54,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:04:54,867 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions.
[2024-12-02 07:04:54,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2024-12-02 07:04:54,868 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 48
[2024-12-02 07:04:54,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:04:54,868 INFO L225 Difference]: With dead ends: 108
[2024-12-02 07:04:54,868 INFO L226 Difference]: Without dead ends: 108
[2024-12-02 07:04:54,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=1035, Unknown=1, NotChecked=64, Total=1190
[2024-12-02 07:04:54,869 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 7 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 154 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-12-02 07:04:54,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 680 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 618 Invalid, 0 Unknown, 154 Unchecked, 0.3s Time]
[2024-12-02 07:04:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states.
[2024-12-02 07:04:54,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108.
[2024-12-02 07:04:54,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 77 states have (on average 1.4025974025974026) internal successors, (108), 102 states have internal predecessors, (108), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:04:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 114 transitions.
[2024-12-02 07:04:54,872 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 114 transitions. Word has length 48
[2024-12-02 07:04:54,872 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:04:54,873 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 114 transitions.
[2024-12-02 07:04:54,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:04:54,873 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 114 transitions.
[2024-12-02 07:04:54,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2024-12-02 07:04:54,873 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:04:54,873 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:04:54,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-12-02 07:04:55,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:04:55,074 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:04:55,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:04:55,074 INFO L85 PathProgramCache]: Analyzing trace with hash 400577195, now seen corresponding path program 1 times
[2024-12-02 07:04:55,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:04:55,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652566816]
[2024-12-02 07:04:55,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:55,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:04:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:56,220 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-12-02 07:04:56,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:04:56,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652566816]
[2024-12-02 07:04:56,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652566816] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:04:56,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395402542]
[2024-12-02 07:04:56,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:04:56,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:04:56,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:04:56,222 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:04:56,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-12-02 07:04:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:04:56,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 108 conjuncts are in the unsatisfiable core
[2024-12-02 07:04:56,470 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:04:56,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:04:56,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-12-02 07:04:56,783 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-12-02 07:04:56,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-12-02 07:04:56,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 07:04:57,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 07:04:57,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-12-02 07:04:57,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19
[2024-12-02 07:04:57,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2024-12-02 07:04:57,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-12-02 07:04:57,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3
[2024-12-02 07:04:57,484 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_dll_circular_append_~head#1.base_BEFORE_CALL_7| Int)) (= (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_dll_circular_append_~head#1.base_BEFORE_CALL_7|) 0) 0)) (exists ((|node_create_~temp~0#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$#2.base)| |node_create_~temp~0#1.base| (select |c_#memory_$Pointer$#2.base| |node_create_~temp~0#1.base|)) |c_#memory_$Pointer$#2.base|) (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= (store |c_old(#memory_$Pointer$#2.offset)| |node_create_~temp~0#1.base| (select |c_#memory_$Pointer$#2.offset| |node_create_~temp~0#1.base|)) |c_#memory_$Pointer$#2.offset|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|))))) is different from true
[2024-12-02 07:04:57,520 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:04:57,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 34
[2024-12-02 07:04:57,529 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:04:57,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17
[2024-12-02 07:04:57,549 INFO L349 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size
[2024-12-02 07:04:57,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30
[2024-12-02 07:04:57,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2024-12-02 07:04:57,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 28
[2024-12-02 07:04:57,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13
[2024-12-02 07:04:57,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3
[2024-12-02 07:04:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked.
[2024-12-02 07:04:57,798 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:04:58,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395402542] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:04:58,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:04:58,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25] total 47
[2024-12-02 07:04:58,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319934651]
[2024-12-02 07:04:58,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:04:58,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states
[2024-12-02 07:04:58,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:04:58,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants.
[2024-12-02 07:04:58,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=2488, Unknown=1, NotChecked=100, Total=2756
[2024-12-02 07:04:58,219 INFO L87 Difference]: Start difference. First operand 108 states and 114 transitions. Second operand has 48 states, 44 states have (on average 1.8409090909090908) internal successors, (81), 41 states have internal predecessors, (81), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-12-02 07:05:00,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:05:00,104 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions.
[2024-12-02 07:05:00,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2024-12-02 07:05:00,104 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 44 states have (on average 1.8409090909090908) internal successors, (81), 41 states have internal predecessors, (81), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 48
[2024-12-02 07:05:00,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:05:00,105 INFO L225 Difference]: With dead ends: 107
[2024-12-02 07:05:00,105 INFO L226 Difference]: Without dead ends: 107
[2024-12-02 07:05:00,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=308, Invalid=4251, Unknown=1, NotChecked=132, Total=4692
[2024-12-02 07:05:00,106 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 57 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 1694 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2024-12-02 07:05:00,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1392 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1694 Invalid, 0 Unknown, 110 Unchecked, 1.0s Time]
[2024-12-02 07:05:00,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2024-12-02 07:05:00,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107.
[2024-12-02 07:05:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 101 states have internal predecessors, (107), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:05:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 113 transitions.
[2024-12-02 07:05:00,108 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 113 transitions. Word has length 48
[2024-12-02 07:05:00,108 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:05:00,108 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 113 transitions.
[2024-12-02 07:05:00,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 44 states have (on average 1.8409090909090908) internal successors, (81), 41 states have internal predecessors, (81), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-12-02 07:05:00,108 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 113 transitions.
[2024-12-02 07:05:00,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2024-12-02 07:05:00,109 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:05:00,109 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:05:00,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2024-12-02 07:05:00,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:05:00,309 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:05:00,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:05:00,309 INFO L85 PathProgramCache]: Analyzing trace with hash -792425827, now seen corresponding path program 1 times
[2024-12-02 07:05:00,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:05:00,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505681477]
[2024-12-02 07:05:00,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:05:00,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:05:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:05:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2024-12-02 07:05:00,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:05:00,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505681477]
[2024-12-02 07:05:00,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505681477] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:05:00,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602259339]
[2024-12-02 07:05:00,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:05:00,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:05:00,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:05:00,537 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:05:00,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-12-02 07:05:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:05:00,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 38 conjuncts are in the unsatisfiable core
[2024-12-02 07:05:00,741 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:05:00,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-12-02 07:05:00,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:05:00,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-12-02 07:05:00,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-12-02 07:05:00,936 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size
[2024-12-02 07:05:00,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21
[2024-12-02 07:05:00,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 07:05:01,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 07:05:01,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-12-02 07:05:01,070 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true
[2024-12-02 07:05:01,103 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:05:01,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 07:05:01,113 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2024-12-02 07:05:01,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18
[2024-12-02 07:05:01,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-12-02 07:05:01,186 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|))) is different from true
[2024-12-02 07:05:01,212 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:05:01,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 07:05:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 21 not checked.
[2024-12-02 07:05:01,249 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:05:01,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602259339] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:05:01,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:05:01,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 21
[2024-12-02 07:05:01,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556096713]
[2024-12-02 07:05:01,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:05:01,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-12-02 07:05:01,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:05:01,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-12-02 07:05:01,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=362, Unknown=2, NotChecked=78, Total=506
[2024-12-02 07:05:01,343 INFO L87 Difference]: Start difference. First operand 107 states and 113 transitions. Second operand has 21 states, 20 states have (on average 3.9) internal successors, (78), 17 states have internal predecessors, (78), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6)
[2024-12-02 07:05:01,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:05:01,882 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions.
[2024-12-02 07:05:01,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2024-12-02 07:05:01,883 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 17 states have internal predecessors, (78), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 49
[2024-12-02 07:05:01,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:05:01,883 INFO L225 Difference]: With dead ends: 101
[2024-12-02 07:05:01,883 INFO L226 Difference]: Without dead ends: 101
[2024-12-02 07:05:01,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=690, Unknown=2, NotChecked=110, Total=930
[2024-12-02 07:05:01,885 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 159 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 184 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-12-02 07:05:01,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 679 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 702 Invalid, 0 Unknown, 184 Unchecked, 0.3s Time]
[2024-12-02 07:05:01,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2024-12-02 07:05:01,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101.
[2024-12-02 07:05:01,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 74 states have (on average 1.3513513513513513) internal successors, (100), 95 states have internal predecessors, (100), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:05:01,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions.
[2024-12-02 07:05:01,888 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 49
[2024-12-02 07:05:01,888 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:05:01,888 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 106 transitions.
[2024-12-02 07:05:01,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 17 states have internal predecessors, (78), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6)
[2024-12-02 07:05:01,888 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 106 transitions.
[2024-12-02 07:05:01,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2024-12-02 07:05:01,889 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:05:01,889 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:05:01,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2024-12-02 07:05:02,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:05:02,089 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:05:02,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:05:02,090 INFO L85 PathProgramCache]: Analyzing trace with hash -697065997, now seen corresponding path program 1 times
[2024-12-02 07:05:02,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:05:02,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854604400]
[2024-12-02 07:05:02,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:05:02,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:05:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:05:02,184 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2024-12-02 07:05:02,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:05:02,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854604400]
[2024-12-02 07:05:02,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854604400] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:05:02,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:05:02,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 07:05:02,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19359477]
[2024-12-02 07:05:02,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:05:02,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 07:05:02,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:05:02,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 07:05:02,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-12-02 07:05:02,185 INFO L87 Difference]: Start difference. First operand 101 states and 106 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-12-02 07:05:02,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:05:02,252 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions.
[2024-12-02 07:05:02,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-12-02 07:05:02,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 54
[2024-12-02 07:05:02,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:05:02,254 INFO L225 Difference]: With dead ends: 100
[2024-12-02 07:05:02,254 INFO L226 Difference]: Without dead ends: 100
[2024-12-02 07:05:02,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 07:05:02,254 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 07:05:02,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 279 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 07:05:02,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2024-12-02 07:05:02,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100.
[2024-12-02 07:05:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 74 states have (on average 1.337837837837838) internal successors, (99), 94 states have internal predecessors, (99), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:05:02,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions.
[2024-12-02 07:05:02,257 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 54
[2024-12-02 07:05:02,257 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:05:02,257 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions.
[2024-12-02 07:05:02,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-12-02 07:05:02,257 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions.
[2024-12-02 07:05:02,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2024-12-02 07:05:02,257 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:05:02,258 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:05:02,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2024-12-02 07:05:02,258 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:05:02,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:05:02,258 INFO L85 PathProgramCache]: Analyzing trace with hash -697065996, now seen corresponding path program 1 times
[2024-12-02 07:05:02,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:05:02,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652186457]
[2024-12-02 07:05:02,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:05:02,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:05:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:05:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2024-12-02 07:05:02,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:05:02,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652186457]
[2024-12-02 07:05:02,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652186457] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:05:02,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399709834]
[2024-12-02 07:05:02,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:05:02,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:05:02,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:05:02,546 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:05:02,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-12-02 07:05:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:05:02,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-12-02 07:05:02,785 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:05:02,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15
[2024-12-02 07:05:02,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2024-12-02 07:05:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2024-12-02 07:05:02,865 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:05:02,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399709834] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:05:02,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 07:05:02,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14
[2024-12-02 07:05:02,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547560274]
[2024-12-02 07:05:02,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:05:02,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 07:05:02,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:05:02,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 07:05:02,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210
[2024-12-02 07:05:02,866 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-12-02 07:05:02,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:05:02,930 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions.
[2024-12-02 07:05:02,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-12-02 07:05:02,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 54
[2024-12-02 07:05:02,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:05:02,931 INFO L225 Difference]: With dead ends: 99
[2024-12-02 07:05:02,931 INFO L226 Difference]: Without dead ends: 99
[2024-12-02 07:05:02,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210
[2024-12-02 07:05:02,931 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 07:05:02,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 291 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 07:05:02,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2024-12-02 07:05:02,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99.
[2024-12-02 07:05:02,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 93 states have internal predecessors, (98), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:05:02,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions.
[2024-12-02 07:05:02,933 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 54
[2024-12-02 07:05:02,933 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:05:02,933 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions.
[2024-12-02 07:05:02,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-12-02 07:05:02,933 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions.
[2024-12-02 07:05:02,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2024-12-02 07:05:02,934 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:05:02,934 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1]
[2024-12-02 07:05:02,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2024-12-02 07:05:03,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:05:03,134 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:05:03,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:05:03,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1004500758, now seen corresponding path program 1 times
[2024-12-02 07:05:03,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:05:03,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511322132]
[2024-12-02 07:05:03,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:05:03,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:05:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:05:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2024-12-02 07:05:03,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:05:03,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511322132]
[2024-12-02 07:05:03,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511322132] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:05:03,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:05:03,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-12-02 07:05:03,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729337114]
[2024-12-02 07:05:03,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:05:03,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-12-02 07:05:03,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:05:03,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-12-02 07:05:03,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2024-12-02 07:05:03,292 INFO L87 Difference]: Start difference. First operand 99 states and 104 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:05:03,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:05:03,402 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions.
[2024-12-02 07:05:03,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-12-02 07:05:03,403 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59
[2024-12-02 07:05:03,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:05:03,403 INFO L225 Difference]: With dead ends: 103
[2024-12-02 07:05:03,403 INFO L226 Difference]: Without dead ends: 103
[2024-12-02 07:05:03,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2024-12-02 07:05:03,404 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 37 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 07:05:03,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 278 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 07:05:03,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2024-12-02 07:05:03,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99.
[2024-12-02 07:05:03,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 75 states have (on average 1.32) internal successors, (99), 93 states have internal predecessors, (99), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:05:03,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions.
[2024-12-02 07:05:03,406 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 59
[2024-12-02 07:05:03,406 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:05:03,406 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions.
[2024-12-02 07:05:03,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:05:03,406 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions.
[2024-12-02 07:05:03,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2024-12-02 07:05:03,407 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:05:03,407 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1]
[2024-12-02 07:05:03,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24
[2024-12-02 07:05:03,407 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:05:03,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:05:03,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1004500757, now seen corresponding path program 1 times
[2024-12-02 07:05:03,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:05:03,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837743243]
[2024-12-02 07:05:03,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:05:03,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:05:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:05:04,126 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:05:04,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:05:04,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837743243]
[2024-12-02 07:05:04,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837743243] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:05:04,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250624882]
[2024-12-02 07:05:04,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:05:04,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:05:04,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:05:04,128 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:05:04,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-12-02 07:05:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:05:04,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 42 conjuncts are in the unsatisfiable core
[2024-12-02 07:05:04,362 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:05:04,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-12-02 07:05:04,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3
[2024-12-02 07:05:04,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3
[2024-12-02 07:05:04,631 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_14| Int) (|v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_9| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_main_~#s~0#1.base_BEFORE_CALL_9|) |v_ULTIMATE.start_main_~#s~0#1.offset_BEFORE_CALL_14|))) (and (<= .cse0 0) (<= 0 (+ .cse0 4))))) (exists ((|node_create_~temp~0#1.base| Int)) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|))))) is different from true
[2024-12-02 07:05:04,689 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:05:04,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13
[2024-12-02 07:05:04,698 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size
[2024-12-02 07:05:04,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15
[2024-12-02 07:05:04,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-12-02 07:05:04,911 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 07:05:04,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32
[2024-12-02 07:05:04,976 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 7 not checked.
[2024-12-02 07:05:04,976 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:05:05,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250624882] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:05:05,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:05:05,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 31
[2024-12-02 07:05:05,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219752877]
[2024-12-02 07:05:05,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:05:05,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2024-12-02 07:05:05,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:05:05,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2024-12-02 07:05:05,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1082, Unknown=1, NotChecked=66, Total=1260
[2024-12-02 07:05:05,203 INFO L87 Difference]: Start difference. First operand 99 states and 105 transitions. Second operand has 32 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 28 states have internal predecessors, (95), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5)
[2024-12-02 07:05:05,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:05:05,913 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions.
[2024-12-02 07:05:05,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2024-12-02 07:05:05,914 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 28 states have internal predecessors, (95), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 59
[2024-12-02 07:05:05,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:05:05,915 INFO L225 Difference]: With dead ends: 105
[2024-12-02 07:05:05,915 INFO L226 Difference]: Without dead ends: 105
[2024-12-02 07:05:05,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=176, Invalid=1633, Unknown=1, NotChecked=82, Total=1892
[2024-12-02 07:05:05,915 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 95 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-12-02 07:05:05,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 827 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 978 Invalid, 0 Unknown, 103 Unchecked, 0.5s Time]
[2024-12-02 07:05:05,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2024-12-02 07:05:05,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101.
[2024-12-02 07:05:05,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 95 states have internal predecessors, (101), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:05:05,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions.
[2024-12-02 07:05:05,917 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 59
[2024-12-02 07:05:05,918 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:05:05,918 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions.
[2024-12-02 07:05:05,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 28 states have internal predecessors, (95), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5)
[2024-12-02 07:05:05,918 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions.
[2024-12-02 07:05:05,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2024-12-02 07:05:05,918 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:05:05,918 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:05:05,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2024-12-02 07:05:06,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:05:06,119 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:05:06,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:05:06,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1033932985, now seen corresponding path program 1 times
[2024-12-02 07:05:06,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:05:06,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725054487]
[2024-12-02 07:05:06,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:05:06,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:05:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:05:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:05:08,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:05:08,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725054487]
[2024-12-02 07:05:08,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725054487] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:05:08,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991841282]
[2024-12-02 07:05:08,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:05:08,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:05:08,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:05:08,654 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:05:08,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2024-12-02 07:05:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:05:08,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 127 conjuncts are in the unsatisfiable core
[2024-12-02 07:05:08,915 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:05:08,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:05:09,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2024-12-02 07:05:09,283 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size
[2024-12-02 07:05:09,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21
[2024-12-02 07:05:09,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13
[2024-12-02 07:05:09,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13
[2024-12-02 07:05:09,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13
[2024-12-02 07:05:09,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13
[2024-12-02 07:05:09,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1
[2024-12-02 07:05:09,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 14
[2024-12-02 07:05:09,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3
[2024-12-02 07:05:09,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2024-12-02 07:05:10,072 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size
[2024-12-02 07:05:10,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 29
[2024-12-02 07:05:10,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3
[2024-12-02 07:05:10,084 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:05:10,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39
[2024-12-02 07:05:10,103 INFO L349 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size
[2024-12-02 07:05:10,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36
[2024-12-02 07:05:10,474 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 07:05:10,474 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 07:05:10,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 16
[2024-12-02 07:05:10,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21
[2024-12-02 07:05:10,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21
[2024-12-02 07:05:10,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21
[2024-12-02 07:05:10,942 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:05:10,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 21
[2024-12-02 07:05:11,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17
[2024-12-02 07:05:11,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2024-12-02 07:05:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:05:11,197 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:05:11,632 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_circular_append_#t~mem14#1.offset_15| Int) (v_ArrVal_3367 (Array Int Int)) (v_ArrVal_3368 (Array Int Int))) (let ((.cse0 (store |c_#memory_int#2| |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3367)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store .cse0 .cse1 v_ArrVal_3368) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 8))) (not (= (let ((.cse2 (+ |v_ULTIMATE.start_dll_circular_append_#t~mem14#1.offset_15| 4))) (store (select .cse0 .cse1) .cse2 (select v_ArrVal_3368 .cse2))) v_ArrVal_3368)) (< (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|) |v_ULTIMATE.start_dll_circular_append_#t~mem14#1.offset_15|)))) is different from false
[2024-12-02 07:05:11,669 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_circular_append_#t~mem14#1.offset_15| Int) (v_ArrVal_3365 (Array Int Int)) (v_ArrVal_3367 (Array Int Int)) (v_ArrVal_3368 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int#2| |c_ULTIMATE.start_dll_circular_append_~last~1#1.base| v_ArrVal_3365) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3367)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store .cse0 .cse1 v_ArrVal_3368) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 8))) (not (= v_ArrVal_3368 (let ((.cse2 (+ |v_ULTIMATE.start_dll_circular_append_#t~mem14#1.offset_15| 4))) (store (select .cse0 .cse1) .cse2 (select v_ArrVal_3368 .cse2))))) (< (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|) |v_ULTIMATE.start_dll_circular_append_#t~mem14#1.offset_15|)))) is different from false
[2024-12-02 07:05:11,681 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_circular_append_#t~mem14#1.offset_15| Int) (v_ArrVal_3365 (Array Int Int)) (v_ArrVal_3367 (Array Int Int)) (v_ArrVal_3368 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int#2| |c_ULTIMATE.start_dll_circular_append_#t~mem12#1.base| v_ArrVal_3365) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3367)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store .cse0 .cse1 v_ArrVal_3368) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 8))) (not (= (let ((.cse2 (+ |v_ULTIMATE.start_dll_circular_append_#t~mem14#1.offset_15| 4))) (store (select .cse0 .cse1) .cse2 (select v_ArrVal_3368 .cse2))) v_ArrVal_3368)) (< (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|) |v_ULTIMATE.start_dll_circular_append_#t~mem14#1.offset_15|)))) is different from false
[2024-12-02 07:05:11,695 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_circular_append_#t~mem14#1.offset_15| Int) (v_ArrVal_3365 (Array Int Int)) (v_ArrVal_3367 (Array Int Int)) (v_ArrVal_3368 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int#2| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_#t~mem11#1.base|) (+ |c_ULTIMATE.start_dll_circular_append_#t~mem11#1.offset| 4)) v_ArrVal_3365) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3367)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (or (not (= (let ((.cse2 (+ |v_ULTIMATE.start_dll_circular_append_#t~mem14#1.offset_15| 4))) (store (select .cse0 .cse1) .cse2 (select v_ArrVal_3368 .cse2))) v_ArrVal_3368)) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store .cse0 .cse1 v_ArrVal_3368) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 8))) (< (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|) |v_ULTIMATE.start_dll_circular_append_#t~mem14#1.offset_15|)))) is different from false
[2024-12-02 07:05:11,711 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_circular_append_#t~mem14#1.offset_15| Int) (v_ArrVal_3365 (Array Int Int)) (v_ArrVal_3367 (Array Int Int)) (v_ArrVal_3368 (Array Int Int))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse3 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (let ((.cse0 (store (store |c_#memory_int#2| (select (select |c_#memory_$Pointer$#2.base| .cse1) (+ .cse3 4)) v_ArrVal_3365) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3367))) (or (not (= (let ((.cse2 (+ |v_ULTIMATE.start_dll_circular_append_#t~mem14#1.offset_15| 4))) (store (select .cse0 .cse1) .cse2 (select v_ArrVal_3368 .cse2))) v_ArrVal_3368)) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store .cse0 .cse1 v_ArrVal_3368) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 8))) (< .cse3 |v_ULTIMATE.start_dll_circular_append_#t~mem14#1.offset_15|))))) is different from false
[2024-12-02 07:05:11,749 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_circular_append_#t~mem14#1.offset_15| Int) (v_ArrVal_3365 (Array Int Int)) (v_ArrVal_3367 (Array Int Int)) (v_ArrVal_3368 (Array Int Int))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse3 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (let ((.cse0 (store (store |c_#memory_int#2| (select (select |c_#memory_$Pointer$#2.base| .cse1) (+ .cse3 4)) v_ArrVal_3365) |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base| v_ArrVal_3367))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store .cse0 .cse1 v_ArrVal_3368) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 8))) (not (= v_ArrVal_3368 (let ((.cse2 (+ |v_ULTIMATE.start_dll_circular_append_#t~mem14#1.offset_15| 4))) (store (select .cse0 .cse1) .cse2 (select v_ArrVal_3368 .cse2))))) (< .cse3 |v_ULTIMATE.start_dll_circular_append_#t~mem14#1.offset_15|))))) is different from false
[2024-12-02 07:05:11,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991841282] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:05:11,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:05:11,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 34] total 63
[2024-12-02 07:05:11,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675362648]
[2024-12-02 07:05:11,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:05:11,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states
[2024-12-02 07:05:11,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:05:11,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants.
[2024-12-02 07:05:11,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=4413, Unknown=41, NotChecked=834, Total=5550
[2024-12-02 07:05:11,982 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand has 63 states, 59 states have (on average 1.7627118644067796) internal successors, (104), 55 states have internal predecessors, (104), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-12-02 07:05:14,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:05:14,360 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions.
[2024-12-02 07:05:14,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2024-12-02 07:05:14,361 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 59 states have (on average 1.7627118644067796) internal successors, (104), 55 states have internal predecessors, (104), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 63
[2024-12-02 07:05:14,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:05:14,361 INFO L225 Difference]: With dead ends: 105
[2024-12-02 07:05:14,361 INFO L226 Difference]: Without dead ends: 105
[2024-12-02 07:05:14,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1490 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=488, Invalid=7505, Unknown=41, NotChecked=1086, Total=9120
[2024-12-02 07:05:14,363 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 100 mSDsluCounter, 2063 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 2097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2024-12-02 07:05:14,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 2123 Invalid, 2097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2024-12-02 07:05:14,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2024-12-02 07:05:14,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101.
[2024-12-02 07:05:14,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 77 states have (on average 1.2987012987012987) internal successors, (100), 95 states have internal predecessors, (100), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:05:14,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions.
[2024-12-02 07:05:14,365 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 63
[2024-12-02 07:05:14,365 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:05:14,365 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 106 transitions.
[2024-12-02 07:05:14,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 59 states have (on average 1.7627118644067796) internal successors, (104), 55 states have internal predecessors, (104), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-12-02 07:05:14,365 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 106 transitions.
[2024-12-02 07:05:14,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2024-12-02 07:05:14,365 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:05:14,365 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:05:14,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2024-12-02 07:05:14,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:05:14,566 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:05:14,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:05:14,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1986657125, now seen corresponding path program 1 times
[2024-12-02 07:05:14,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:05:14,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895791081]
[2024-12-02 07:05:14,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:05:14,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:05:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:05:14,710 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2024-12-02 07:05:14,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:05:14,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895791081]
[2024-12-02 07:05:14,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895791081] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:05:14,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:05:14,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-12-02 07:05:14,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302012072]
[2024-12-02 07:05:14,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:05:14,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-12-02 07:05:14,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:05:14,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-12-02 07:05:14,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2024-12-02 07:05:14,711 INFO L87 Difference]: Start difference. First operand 101 states and 106 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:05:14,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:05:14,797 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions.
[2024-12-02 07:05:14,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 07:05:14,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 64
[2024-12-02 07:05:14,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:05:14,798 INFO L225 Difference]: With dead ends: 100
[2024-12-02 07:05:14,798 INFO L226 Difference]: Without dead ends: 100
[2024-12-02 07:05:14,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2024-12-02 07:05:14,799 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 19 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 07:05:14,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 301 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 07:05:14,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2024-12-02 07:05:14,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100.
[2024-12-02 07:05:14,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 94 states have internal predecessors, (99), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:05:14,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions.
[2024-12-02 07:05:14,801 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 64
[2024-12-02 07:05:14,801 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:05:14,801 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions.
[2024-12-02 07:05:14,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:05:14,802 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions.
[2024-12-02 07:05:14,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2024-12-02 07:05:14,802 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:05:14,802 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:05:14,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27
[2024-12-02 07:05:14,802 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:05:14,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:05:14,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1986657126, now seen corresponding path program 1 times
[2024-12-02 07:05:14,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:05:14,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318759049]
[2024-12-02 07:05:14,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:05:14,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:05:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:05:15,155 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2024-12-02 07:05:15,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:05:15,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318759049]
[2024-12-02 07:05:15,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318759049] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:05:15,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608768981]
[2024-12-02 07:05:15,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:05:15,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:05:15,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:05:15,157 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:05:15,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2024-12-02 07:05:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:05:15,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 27 conjuncts are in the unsatisfiable core
[2024-12-02 07:05:15,406 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:05:15,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15
[2024-12-02 07:05:15,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2024-12-02 07:05:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-12-02 07:05:15,621 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:05:15,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608768981] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:05:15,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 07:05:15,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21
[2024-12-02 07:05:15,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206557582]
[2024-12-02 07:05:15,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:05:15,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-12-02 07:05:15,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:05:15,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-12-02 07:05:15,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462
[2024-12-02 07:05:15,622 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:05:15,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:05:15,771 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions.
[2024-12-02 07:05:15,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-12-02 07:05:15,771 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 64
[2024-12-02 07:05:15,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:05:15,772 INFO L225 Difference]: With dead ends: 99
[2024-12-02 07:05:15,772 INFO L226 Difference]: Without dead ends: 99
[2024-12-02 07:05:15,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552
[2024-12-02 07:05:15,772 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 68 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 07:05:15,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 427 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 07:05:15,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2024-12-02 07:05:15,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99.
[2024-12-02 07:05:15,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 77 states have (on average 1.2727272727272727) internal successors, (98), 93 states have internal predecessors, (98), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:05:15,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions.
[2024-12-02 07:05:15,774 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 64
[2024-12-02 07:05:15,774 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:05:15,774 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions.
[2024-12-02 07:05:15,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:05:15,775 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions.
[2024-12-02 07:05:15,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2024-12-02 07:05:15,775 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:05:15,775 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:05:15,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2024-12-02 07:05:15,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2024-12-02 07:05:15,976 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:05:15,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:05:15,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2082946863, now seen corresponding path program 1 times
[2024-12-02 07:05:15,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:05:15,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430306913]
[2024-12-02 07:05:15,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:05:15,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:05:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:05:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:05:17,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:05:17,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430306913]
[2024-12-02 07:05:17,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430306913] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:05:17,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251789985]
[2024-12-02 07:05:17,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:05:17,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:05:17,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:05:17,917 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:05:17,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2024-12-02 07:05:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:05:18,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 90 conjuncts are in the unsatisfiable core
[2024-12-02 07:05:18,212 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:05:18,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:05:18,296 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-12-02 07:05:18,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-12-02 07:05:18,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 07:05:18,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2024-12-02 07:05:18,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2024-12-02 07:05:18,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 26
[2024-12-02 07:05:18,726 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 07:05:18,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 17
[2024-12-02 07:05:18,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2024-12-02 07:05:18,865 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:05:18,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 56
[2024-12-02 07:05:18,893 INFO L349 Elim1Store]: treesize reduction 94, result has 36.9 percent of original size
[2024-12-02 07:05:18,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 64
[2024-12-02 07:05:19,155 INFO L349 Elim1Store]: treesize reduction 68, result has 49.6 percent of original size
[2024-12-02 07:05:19,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 94
[2024-12-02 07:05:19,310 INFO L349 Elim1Store]: treesize reduction 25, result has 26.5 percent of original size
[2024-12-02 07:05:19,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 194 treesize of output 142
[2024-12-02 07:05:19,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-12-02 07:05:19,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 127
[2024-12-02 07:05:19,723 INFO L349 Elim1Store]: treesize reduction 96, result has 43.9 percent of original size
[2024-12-02 07:05:19,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 249 treesize of output 162
[2024-12-02 07:05:20,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 694 treesize of output 582
[2024-12-02 07:05:21,659 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 07:05:21,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 590 treesize of output 664
[2024-12-02 07:11:43,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101
[2024-12-02 07:11:43,118 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory")
[2024-12-02 07:11:43,119 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception
[2024-12-02 07:11:43,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2024-12-02 07:11:43,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:11:43,320 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver:
de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90)
at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107)
at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.<init>(TraceCheckSpWp.java:160)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:82)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:140)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701)
at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258)
... 68 more
[2024-12-02 07:11:43,325 INFO L158 Benchmark]: Toolchain (without parser) took 427466.98ms. Allocated memory was 142.6MB in the beginning and 352.3MB in the end (delta: 209.7MB). Free memory was 115.6MB in the beginning and 255.5MB in the end (delta: -139.9MB). Peak memory consumption was 226.7MB. Max. memory is 16.1GB.
[2024-12-02 07:11:43,325 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 07:11:43,325 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.38ms. Allocated memory is still 142.6MB. Free memory was 115.4MB in the beginning and 97.3MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-12-02 07:11:43,325 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.88ms. Allocated memory is still 142.6MB. Free memory was 97.3MB in the beginning and 95.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 07:11:43,325 INFO L158 Benchmark]: Boogie Preprocessor took 48.73ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 92.3MB in the end (delta: 3.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 07:11:43,325 INFO L158 Benchmark]: RCFGBuilder took 505.25ms. Allocated memory is still 142.6MB. Free memory was 92.3MB in the beginning and 64.0MB in the end (delta: 28.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB.
[2024-12-02 07:11:43,326 INFO L158 Benchmark]: TraceAbstraction took 426539.75ms. Allocated memory was 142.6MB in the beginning and 352.3MB in the end (delta: 209.7MB). Free memory was 63.2MB in the beginning and 255.5MB in the end (delta: -192.3MB). Peak memory consumption was 176.4MB. Max. memory is 16.1GB.
[2024-12-02 07:11:43,327 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 334.38ms. Allocated memory is still 142.6MB. Free memory was 115.4MB in the beginning and 97.3MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 32.88ms. Allocated memory is still 142.6MB. Free memory was 97.3MB in the beginning and 95.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 48.73ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 92.3MB in the end (delta: 3.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* RCFGBuilder took 505.25ms. Allocated memory is still 142.6MB. Free memory was 92.3MB in the beginning and 64.0MB in the end (delta: 28.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB.
* TraceAbstraction took 426539.75ms. Allocated memory was 142.6MB in the beginning and 352.3MB in the end (delta: 209.7MB). Free memory was 63.2MB in the beginning and 255.5MB in the end (delta: -192.3MB). Peak memory consumption was 176.4MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")
de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")
: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/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_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2c_append_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9aabbeff87ba819b44dc608a3105d0ba81b71cd88693ecf2e6bf3860a7863e64
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-12-02 07:11:45,010 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-12-02 07:11:45,088 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf
[2024-12-02 07:11:45,093 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-12-02 07:11:45,093 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-12-02 07:11:45,113 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-12-02 07:11:45,114 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-12-02 07:11:45,114 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-12-02 07:11:45,115 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-12-02 07:11:45,115 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-12-02 07:11:45,115 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-12-02 07:11:45,115 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-12-02 07:11:45,115 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-12-02 07:11:45,115 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-12-02 07:11:45,115 INFO L153 SettingsManager]: * Use SBE=true
[2024-12-02 07:11:45,116 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-12-02 07:11:45,116 INFO L153 SettingsManager]: * sizeof long=4
[2024-12-02 07:11:45,116 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-12-02 07:11:45,116 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-12-02 07:11:45,116 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-12-02 07:11:45,116 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2024-12-02 07:11:45,116 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2024-12-02 07:11:45,116 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2024-12-02 07:11:45,116 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-12-02 07:11:45,116 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-12-02 07:11:45,116 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2024-12-02 07:11:45,117 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2024-12-02 07:11:45,117 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2024-12-02 07:11:45,117 INFO L153 SettingsManager]: * sizeof long double=12
[2024-12-02 07:11:45,117 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-12-02 07:11:45,117 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-12-02 07:11:45,117 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-12-02 07:11:45,117 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 07:11:45,117 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 07:11:45,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 07:11:45,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 07:11:45,118 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-12-02 07:11:45,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 07:11:45,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 07:11:45,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 07:11:45,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 07:11:45,118 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-12-02 07:11:45,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-12-02 07:11:45,119 INFO L153 SettingsManager]: * Trace refinement strategy=FOX
[2024-12-02 07:11:45,119 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-12-02 07:11:45,119 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-12-02 07:11:45,119 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-12-02 07:11:45,119 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-12-02 07:11:45,119 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-12-02 07:11:45,119 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_fc853013-f645-40d4-875c-7304059ebae7/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 valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
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 -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9aabbeff87ba819b44dc608a3105d0ba81b71cd88693ecf2e6bf3860a7863e64
[2024-12-02 07:11:45,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-12-02 07:11:45,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-12-02 07:11:45,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-12-02 07:11:45,350 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-12-02 07:11:45,350 INFO L274 PluginConnector]: CDTParser initialized
[2024-12-02 07:11:45,352 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/list-simple/dll2c_append_unequal.i
[2024-12-02 07:11:48,104 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/data/77d1386ca/1affa7d816d3497798291178e15ba205/FLAG00b21b4e9
[2024-12-02 07:11:48,305 INFO L384 CDTParser]: Found 1 translation units.
[2024-12-02 07:11:48,306 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/sv-benchmarks/c/list-simple/dll2c_append_unequal.i
[2024-12-02 07:11:48,317 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/data/77d1386ca/1affa7d816d3497798291178e15ba205/FLAG00b21b4e9
[2024-12-02 07:11:48,329 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/data/77d1386ca/1affa7d816d3497798291178e15ba205
[2024-12-02 07:11:48,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-12-02 07:11:48,332 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-12-02 07:11:48,333 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-12-02 07:11:48,333 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-12-02 07:11:48,336 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-12-02 07:11:48,337 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:11:48" (1/1) ...
[2024-12-02 07:11:48,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3236e9a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:11:48, skipping insertion in model container
[2024-12-02 07:11:48,338 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:11:48" (1/1) ...
[2024-12-02 07:11:48,363 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-12-02 07:11:48,600 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 07:11:48,610 INFO L200 MainTranslator]: Completed pre-run
[2024-12-02 07:11:48,654 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 07:11:48,677 INFO L204 MainTranslator]: Completed translation
[2024-12-02 07:11:48,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:11:48 WrapperNode
[2024-12-02 07:11:48,677 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-12-02 07:11:48,678 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-12-02 07:11:48,678 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-12-02 07:11:48,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-12-02 07:11:48,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:11:48" (1/1) ...
[2024-12-02 07:11:48,694 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:11:48" (1/1) ...
[2024-12-02 07:11:48,713 INFO L138 Inliner]: procedures = 130, calls = 50, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 155
[2024-12-02 07:11:48,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-12-02 07:11:48,714 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-12-02 07:11:48,714 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-12-02 07:11:48,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-12-02 07:11:48,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:11:48" (1/1) ...
[2024-12-02 07:11:48,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:11:48" (1/1) ...
[2024-12-02 07:11:48,727 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:11:48" (1/1) ...
[2024-12-02 07:11:48,745 INFO L175 MemorySlicer]: Split 31 memory accesses to 3 slices as follows [2, 9, 20]. 65 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 14 writes are split as follows [0, 1, 13].
[2024-12-02 07:11:48,745 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:11:48" (1/1) ...
[2024-12-02 07:11:48,745 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:11:48" (1/1) ...
[2024-12-02 07:11:48,757 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:11:48" (1/1) ...
[2024-12-02 07:11:48,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:11:48" (1/1) ...
[2024-12-02 07:11:48,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:11:48" (1/1) ...
[2024-12-02 07:11:48,763 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:11:48" (1/1) ...
[2024-12-02 07:11:48,764 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:11:48" (1/1) ...
[2024-12-02 07:11:48,768 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-12-02 07:11:48,768 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-12-02 07:11:48,768 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-12-02 07:11:48,768 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-12-02 07:11:48,769 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:11:48" (1/1) ...
[2024-12-02 07:11:48,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 07:11:48,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:11:48,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-12-02 07:11:48,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-12-02 07:11:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0
[2024-12-02 07:11:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1
[2024-12-02 07:11:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2
[2024-12-02 07:11:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure node_create
[2024-12-02 07:11:48,820 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create
[2024-12-02 07:11:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2024-12-02 07:11:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-12-02 07:11:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-12-02 07:11:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0
[2024-12-02 07:11:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1
[2024-12-02 07:11:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2
[2024-12-02 07:11:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0
[2024-12-02 07:11:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1
[2024-12-02 07:11:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2
[2024-12-02 07:11:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-12-02 07:11:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0
[2024-12-02 07:11:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1
[2024-12-02 07:11:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2
[2024-12-02 07:11:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0
[2024-12-02 07:11:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1
[2024-12-02 07:11:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2
[2024-12-02 07:11:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-12-02 07:11:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1
[2024-12-02 07:11:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2
[2024-12-02 07:11:48,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-12-02 07:11:48,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-12-02 07:11:48,936 INFO L234 CfgBuilder]: Building ICFG
[2024-12-02 07:11:48,937 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-12-02 07:11:49,497 INFO L? ?]: Removed 158 outVars from TransFormulas that were not future-live.
[2024-12-02 07:11:49,497 INFO L283 CfgBuilder]: Performing block encoding
[2024-12-02 07:11:49,509 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-12-02 07:11:49,509 INFO L312 CfgBuilder]: Removed 3 assume(true) statements.
[2024-12-02 07:11:49,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:11:49 BoogieIcfgContainer
[2024-12-02 07:11:49,510 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-12-02 07:11:49,512 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-12-02 07:11:49,512 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-12-02 07:11:49,516 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-12-02 07:11:49,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:11:48" (1/3) ...
[2024-12-02 07:11:49,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a656d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:11:49, skipping insertion in model container
[2024-12-02 07:11:49,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:11:48" (2/3) ...
[2024-12-02 07:11:49,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a656d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:11:49, skipping insertion in model container
[2024-12-02 07:11:49,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:11:49" (3/3) ...
[2024-12-02 07:11:49,519 INFO L128 eAbstractionObserver]: Analyzing ICFG dll2c_append_unequal.i
[2024-12-02 07:11:49,531 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-12-02 07:11:49,533 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG dll2c_append_unequal.i that has 2 procedures, 141 locations, 1 initial locations, 3 loop locations, and 64 error locations.
[2024-12-02 07:11:49,569 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-12-02 07:11:49,579 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=None, 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;@54d9b908, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-12-02 07:11:49,579 INFO L334 AbstractCegarLoop]: Starting to check reachability of 64 error locations.
[2024-12-02 07:11:49,583 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 72 states have (on average 2.0833333333333335) internal successors, (150), 136 states have internal predecessors, (150), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:11:49,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2024-12-02 07:11:49,588 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:11:49,588 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-12-02 07:11:49,588 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:11:49,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:11:49,592 INFO L85 PathProgramCache]: Analyzing trace with hash 895918834, now seen corresponding path program 1 times
[2024-12-02 07:11:49,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:11:49,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1025228770]
[2024-12-02 07:11:49,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:11:49,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:11:49,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:11:49,600 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:11:49,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-12-02 07:11:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:11:49,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-12-02 07:11:49,695 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:11:49,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-12-02 07:11:49,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:11:49,758 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:11:49,759 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:11:49,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025228770]
[2024-12-02 07:11:49,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025228770] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:11:49,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:11:49,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-12-02 07:11:49,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841145614]
[2024-12-02 07:11:49,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:11:49,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-12-02 07:11:49,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:11:49,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-12-02 07:11:49,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 07:11:49,782 INFO L87 Difference]: Start difference. First operand has 141 states, 72 states have (on average 2.0833333333333335) internal successors, (150), 136 states have internal predecessors, (150), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 07:11:50,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:11:50,035 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions.
[2024-12-02 07:11:50,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-12-02 07:11:50,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2024-12-02 07:11:50,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:11:50,043 INFO L225 Difference]: With dead ends: 137
[2024-12-02 07:11:50,044 INFO L226 Difference]: Without dead ends: 134
[2024-12-02 07:11:50,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 07:11:50,047 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 3 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 07:11:50,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 216 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 07:11:50,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states.
[2024-12-02 07:11:50,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134.
[2024-12-02 07:11:50,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 69 states have (on average 1.9855072463768115) internal successors, (137), 129 states have internal predecessors, (137), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:11:50,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions.
[2024-12-02 07:11:50,082 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 6
[2024-12-02 07:11:50,082 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:11:50,082 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions.
[2024-12-02 07:11:50,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 07:11:50,082 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions.
[2024-12-02 07:11:50,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2024-12-02 07:11:50,083 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:11:50,083 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-12-02 07:11:50,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-12-02 07:11:50,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:11:50,284 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:11:50,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:11:50,284 INFO L85 PathProgramCache]: Analyzing trace with hash 895918835, now seen corresponding path program 1 times
[2024-12-02 07:11:50,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:11:50,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790568407]
[2024-12-02 07:11:50,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:11:50,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:11:50,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:11:50,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:11:50,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-12-02 07:11:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:11:50,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-12-02 07:11:50,353 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:11:50,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:11:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:11:50,385 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:11:50,385 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:11:50,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790568407]
[2024-12-02 07:11:50,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790568407] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:11:50,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:11:50,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-12-02 07:11:50,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482115435]
[2024-12-02 07:11:50,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:11:50,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-12-02 07:11:50,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:11:50,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-12-02 07:11:50,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 07:11:50,387 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 07:11:50,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:11:50,609 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions.
[2024-12-02 07:11:50,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-12-02 07:11:50,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2024-12-02 07:11:50,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:11:50,611 INFO L225 Difference]: With dead ends: 131
[2024-12-02 07:11:50,611 INFO L226 Difference]: Without dead ends: 131
[2024-12-02 07:11:50,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 07:11:50,612 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 3 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-12-02 07:11:50,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 217 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-12-02 07:11:50,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2024-12-02 07:11:50,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131.
[2024-12-02 07:11:50,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 69 states have (on average 1.9420289855072463) internal successors, (134), 126 states have internal predecessors, (134), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:11:50,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 140 transitions.
[2024-12-02 07:11:50,620 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 140 transitions. Word has length 6
[2024-12-02 07:11:50,620 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:11:50,620 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 140 transitions.
[2024-12-02 07:11:50,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-12-02 07:11:50,621 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 140 transitions.
[2024-12-02 07:11:50,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-12-02 07:11:50,621 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:11:50,621 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:11:50,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-12-02 07:11:50,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:11:50,822 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:11:50,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:11:50,822 INFO L85 PathProgramCache]: Analyzing trace with hash -259128425, now seen corresponding path program 1 times
[2024-12-02 07:11:50,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:11:50,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1017280960]
[2024-12-02 07:11:50,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:11:50,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:11:50,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:11:50,824 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:11:50,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-12-02 07:11:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:11:50,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-12-02 07:11:50,921 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:11:50,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:11:50,972 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:11:50,972 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:11:50,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017280960]
[2024-12-02 07:11:50,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017280960] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:11:50,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:11:50,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 07:11:50,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530915531]
[2024-12-02 07:11:50,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:11:50,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 07:11:50,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:11:50,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 07:11:50,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-12-02 07:11:50,973 INFO L87 Difference]: Start difference. First operand 131 states and 140 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-12-02 07:11:51,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:11:51,471 INFO L93 Difference]: Finished difference Result 134 states and 146 transitions.
[2024-12-02 07:11:51,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 07:11:51,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14
[2024-12-02 07:11:51,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:11:51,473 INFO L225 Difference]: With dead ends: 134
[2024-12-02 07:11:51,473 INFO L226 Difference]: Without dead ends: 134
[2024-12-02 07:11:51,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 07:11:51,474 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 5 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-12-02 07:11:51,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 406 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-12-02 07:11:51,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states.
[2024-12-02 07:11:51,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133.
[2024-12-02 07:11:51,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 71 states have (on average 1.943661971830986) internal successors, (138), 128 states have internal predecessors, (138), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:11:51,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions.
[2024-12-02 07:11:51,483 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 14
[2024-12-02 07:11:51,483 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:11:51,483 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions.
[2024-12-02 07:11:51,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-12-02 07:11:51,484 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions.
[2024-12-02 07:11:51,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-12-02 07:11:51,484 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:11:51,484 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:11:51,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-12-02 07:11:51,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:11:51,685 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:11:51,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:11:51,685 INFO L85 PathProgramCache]: Analyzing trace with hash -259128424, now seen corresponding path program 1 times
[2024-12-02 07:11:51,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:11:51,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132053146]
[2024-12-02 07:11:51,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:11:51,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:11:51,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:11:51,687 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:11:51,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-12-02 07:11:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:11:51,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-12-02 07:11:51,774 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:11:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:11:51,789 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:11:51,789 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:11:51,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132053146]
[2024-12-02 07:11:51,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132053146] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:11:51,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:11:51,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-12-02 07:11:51,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714369160]
[2024-12-02 07:11:51,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:11:51,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-12-02 07:11:51,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:11:51,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-12-02 07:11:51,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 07:11:51,791 INFO L87 Difference]: Start difference. First operand 133 states and 144 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-12-02 07:11:51,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:11:51,802 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions.
[2024-12-02 07:11:51,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-12-02 07:11:51,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14
[2024-12-02 07:11:51,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:11:51,804 INFO L225 Difference]: With dead ends: 142
[2024-12-02 07:11:51,804 INFO L226 Difference]: Without dead ends: 142
[2024-12-02 07:11:51,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 07:11:51,805 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 10 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 07:11:51,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 271 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 07:11:51,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states.
[2024-12-02 07:11:51,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 132.
[2024-12-02 07:11:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 70 states have (on average 1.9285714285714286) internal successors, (135), 127 states have internal predecessors, (135), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:11:51,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 141 transitions.
[2024-12-02 07:11:51,813 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 141 transitions. Word has length 14
[2024-12-02 07:11:51,813 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:11:51,813 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 141 transitions.
[2024-12-02 07:11:51,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-12-02 07:11:51,813 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 141 transitions.
[2024-12-02 07:11:51,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2024-12-02 07:11:51,814 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:11:51,814 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:11:51,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-12-02 07:11:52,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:11:52,015 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:11:52,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:11:52,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1338086141, now seen corresponding path program 1 times
[2024-12-02 07:11:52,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:11:52,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [719492845]
[2024-12-02 07:11:52,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:11:52,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:11:52,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:11:52,017 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:11:52,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-12-02 07:11:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:11:52,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-12-02 07:11:52,113 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:11:52,175 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-12-02 07:11:52,175 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:11:52,175 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:11:52,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719492845]
[2024-12-02 07:11:52,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719492845] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:11:52,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:11:52,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 07:11:52,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118790918]
[2024-12-02 07:11:52,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:11:52,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 07:11:52,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:11:52,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 07:11:52,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-12-02 07:11:52,177 INFO L87 Difference]: Start difference. First operand 132 states and 141 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 07:11:52,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:11:52,572 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions.
[2024-12-02 07:11:52,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 07:11:52,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24
[2024-12-02 07:11:52,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:11:52,574 INFO L225 Difference]: With dead ends: 131
[2024-12-02 07:11:52,574 INFO L226 Difference]: Without dead ends: 131
[2024-12-02 07:11:52,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 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 07:11:52,575 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 7 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-12-02 07:11:52,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 402 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-12-02 07:11:52,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2024-12-02 07:11:52,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131.
[2024-12-02 07:11:52,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 70 states have (on average 1.9142857142857144) internal successors, (134), 126 states have internal predecessors, (134), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:11:52,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 140 transitions.
[2024-12-02 07:11:52,580 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 140 transitions. Word has length 24
[2024-12-02 07:11:52,581 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:11:52,581 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 140 transitions.
[2024-12-02 07:11:52,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 07:11:52,581 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 140 transitions.
[2024-12-02 07:11:52,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2024-12-02 07:11:52,582 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:11:52,582 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:11:52,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2024-12-02 07:11:52,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:11:52,782 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:11:52,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:11:52,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1338086140, now seen corresponding path program 1 times
[2024-12-02 07:11:52,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:11:52,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [537528739]
[2024-12-02 07:11:52,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:11:52,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:11:52,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:11:52,785 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:11:52,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-12-02 07:11:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:11:52,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 07:11:52,877 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:11:52,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:11:52,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:11:52,987 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:11:52,987 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:11:52,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537528739]
[2024-12-02 07:11:52,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537528739] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:11:52,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:11:52,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 07:11:52,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281041494]
[2024-12-02 07:11:52,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:11:52,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 07:11:52,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:11:52,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 07:11:52,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-12-02 07:11:52,989 INFO L87 Difference]: Start difference. First operand 131 states and 140 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 07:11:53,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:11:53,478 INFO L93 Difference]: Finished difference Result 130 states and 139 transitions.
[2024-12-02 07:11:53,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 07:11:53,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24
[2024-12-02 07:11:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:11:53,479 INFO L225 Difference]: With dead ends: 130
[2024-12-02 07:11:53,479 INFO L226 Difference]: Without dead ends: 130
[2024-12-02 07:11:53,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 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 07:11:53,480 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 6 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-12-02 07:11:53,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 426 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-12-02 07:11:53,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states.
[2024-12-02 07:11:53,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130.
[2024-12-02 07:11:53,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 70 states have (on average 1.9) internal successors, (133), 125 states have internal predecessors, (133), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:11:53,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 139 transitions.
[2024-12-02 07:11:53,486 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 139 transitions. Word has length 24
[2024-12-02 07:11:53,486 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:11:53,486 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 139 transitions.
[2024-12-02 07:11:53,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 07:11:53,486 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 139 transitions.
[2024-12-02 07:11:53,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2024-12-02 07:11:53,486 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:11:53,487 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:11:53,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-12-02 07:11:53,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:11:53,687 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:11:53,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:11:53,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1705560284, now seen corresponding path program 1 times
[2024-12-02 07:11:53,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:11:53,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156538710]
[2024-12-02 07:11:53,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:11:53,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:11:53,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:11:53,690 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:11:53,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-12-02 07:11:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:11:53,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-12-02 07:11:53,788 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:11:53,848 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true
[2024-12-02 07:11:53,936 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size
[2024-12-02 07:11:53,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20
[2024-12-02 07:11:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked.
[2024-12-02 07:11:53,952 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:11:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:11:54,191 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:11:54,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156538710]
[2024-12-02 07:11:54,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156538710] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:11:54,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:11:54,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8
[2024-12-02 07:11:54,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620680054]
[2024-12-02 07:11:54,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:11:54,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-12-02 07:11:54,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:11:54,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-12-02 07:11:54,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72
[2024-12-02 07:11:54,193 INFO L87 Difference]: Start difference. First operand 130 states and 139 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:11:54,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:11:54,952 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions.
[2024-12-02 07:11:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 07:11:54,952 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26
[2024-12-02 07:11:54,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:11:54,953 INFO L225 Difference]: With dead ends: 135
[2024-12-02 07:11:54,953 INFO L226 Difference]: Without dead ends: 135
[2024-12-02 07:11:54,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110
[2024-12-02 07:11:54,954 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 1 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-12-02 07:11:54,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 510 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 433 Invalid, 0 Unknown, 140 Unchecked, 0.7s Time]
[2024-12-02 07:11:54,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2024-12-02 07:11:54,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135.
[2024-12-02 07:11:54,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 74 states have (on average 1.8783783783783783) internal successors, (139), 129 states have internal predecessors, (139), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 07:11:54,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 147 transitions.
[2024-12-02 07:11:54,958 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 147 transitions. Word has length 26
[2024-12-02 07:11:54,958 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:11:54,958 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 147 transitions.
[2024-12-02 07:11:54,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:11:54,958 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 147 transitions.
[2024-12-02 07:11:54,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2024-12-02 07:11:54,958 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:11:54,959 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:11:54,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-12-02 07:11:55,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:11:55,159 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:11:55,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:11:55,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1705560283, now seen corresponding path program 1 times
[2024-12-02 07:11:55,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:11:55,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1673621319]
[2024-12-02 07:11:55,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:11:55,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:11:55,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:11:55,161 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:11:55,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-12-02 07:11:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:11:55,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-12-02 07:11:55,271 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:11:55,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:11:55,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-12-02 07:11:55,465 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true
[2024-12-02 07:11:55,527 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:11:55,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 07:11:55,540 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size
[2024-12-02 07:11:55,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13
[2024-12-02 07:11:55,571 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked.
[2024-12-02 07:11:55,571 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:11:59,770 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:11:59,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673621319]
[2024-12-02 07:11:59,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673621319] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:11:59,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [909113763]
[2024-12-02 07:11:59,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:11:59,770 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-12-02 07:11:59,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4
[2024-12-02 07:11:59,772 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-12-02 07:11:59,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process
[2024-12-02 07:11:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:11:59,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-12-02 07:12:00,000 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:12:00,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-12-02 07:12:00,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:12:00,241 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:12:00,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 07:12:00,266 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size
[2024-12-02 07:12:00,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13
[2024-12-02 07:12:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked.
[2024-12-02 07:12:00,292 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:12:00,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [909113763] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:12:00,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:12:00,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2024-12-02 07:12:00,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038769743]
[2024-12-02 07:12:00,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:12:00,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-12-02 07:12:00,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:12:00,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-12-02 07:12:00,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=69, Unknown=2, NotChecked=16, Total=110
[2024-12-02 07:12:00,514 INFO L87 Difference]: Start difference. First operand 135 states and 147 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 07:12:01,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:12:01,633 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions.
[2024-12-02 07:12:01,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-12-02 07:12:01,634 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26
[2024-12-02 07:12:01,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:12:01,634 INFO L225 Difference]: With dead ends: 135
[2024-12-02 07:12:01,634 INFO L226 Difference]: Without dead ends: 135
[2024-12-02 07:12:01,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=29, Invalid=105, Unknown=2, NotChecked=20, Total=156
[2024-12-02 07:12:01,635 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2024-12-02 07:12:01,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 408 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 545 Invalid, 0 Unknown, 139 Unchecked, 1.0s Time]
[2024-12-02 07:12:01,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2024-12-02 07:12:01,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135.
[2024-12-02 07:12:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 74 states have (on average 1.864864864864865) internal successors, (138), 129 states have internal predecessors, (138), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 07:12:01,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions.
[2024-12-02 07:12:01,639 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 26
[2024-12-02 07:12:01,639 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:12:01,639 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions.
[2024-12-02 07:12:01,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 07:12:01,639 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions.
[2024-12-02 07:12:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2024-12-02 07:12:01,639 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:12:01,640 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:12:01,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0
[2024-12-02 07:12:01,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-12-02 07:12:02,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:12:02,040 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:12:02,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:12:02,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1634228313, now seen corresponding path program 1 times
[2024-12-02 07:12:02,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:12:02,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396475266]
[2024-12-02 07:12:02,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:12:02,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:12:02,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:12:02,043 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:12:02,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-12-02 07:12:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:12:02,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-12-02 07:12:02,143 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:12:02,197 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:12:02,197 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:12:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:12:02,251 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:12:02,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396475266]
[2024-12-02 07:12:02,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396475266] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:12:02,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:12:02,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2024-12-02 07:12:02,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422754195]
[2024-12-02 07:12:02,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:12:02,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 07:12:02,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:12:02,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 07:12:02,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-12-02 07:12:02,252 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 07:12:02,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:12:02,391 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions.
[2024-12-02 07:12:02,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 07:12:02,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28
[2024-12-02 07:12:02,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:12:02,393 INFO L225 Difference]: With dead ends: 135
[2024-12-02 07:12:02,393 INFO L226 Difference]: Without dead ends: 135
[2024-12-02 07:12:02,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 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 07:12:02,393 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 1 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 07:12:02,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 629 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 07:12:02,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2024-12-02 07:12:02,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135.
[2024-12-02 07:12:02,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 74 states have (on average 1.8513513513513513) internal successors, (137), 129 states have internal predecessors, (137), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 07:12:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 145 transitions.
[2024-12-02 07:12:02,405 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 145 transitions. Word has length 28
[2024-12-02 07:12:02,405 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:12:02,405 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 145 transitions.
[2024-12-02 07:12:02,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 07:12:02,406 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 145 transitions.
[2024-12-02 07:12:02,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2024-12-02 07:12:02,406 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:12:02,406 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:12:02,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-12-02 07:12:02,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:12:02,607 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:12:02,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:12:02,607 INFO L85 PathProgramCache]: Analyzing trace with hash -883311442, now seen corresponding path program 1 times
[2024-12-02 07:12:02,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:12:02,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411394401]
[2024-12-02 07:12:02,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:12:02,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:12:02,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:12:02,609 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:12:02,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-12-02 07:12:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:12:02,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-12-02 07:12:02,709 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:12:02,746 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-12-02 07:12:02,746 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:12:02,768 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size
[2024-12-02 07:12:02,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15
[2024-12-02 07:12:02,795 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-12-02 07:12:02,795 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:12:02,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411394401]
[2024-12-02 07:12:02,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411394401] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:12:02,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:12:02,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3
[2024-12-02 07:12:02,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606010594]
[2024-12-02 07:12:02,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:12:02,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 07:12:02,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:12:02,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 07:12:02,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-12-02 07:12:02,796 INFO L87 Difference]: Start difference. First operand 135 states and 145 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 07:12:03,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:12:03,075 INFO L93 Difference]: Finished difference Result 139 states and 152 transitions.
[2024-12-02 07:12:03,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-12-02 07:12:03,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29
[2024-12-02 07:12:03,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:12:03,076 INFO L225 Difference]: With dead ends: 139
[2024-12-02 07:12:03,076 INFO L226 Difference]: Without dead ends: 139
[2024-12-02 07:12:03,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-12-02 07:12:03,077 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 4 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-12-02 07:12:03,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 326 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-12-02 07:12:03,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states.
[2024-12-02 07:12:03,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138.
[2024-12-02 07:12:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 77 states have (on average 1.844155844155844) internal successors, (142), 132 states have internal predecessors, (142), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 07:12:03,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 150 transitions.
[2024-12-02 07:12:03,079 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 150 transitions. Word has length 29
[2024-12-02 07:12:03,079 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:12:03,080 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 150 transitions.
[2024-12-02 07:12:03,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 07:12:03,080 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 150 transitions.
[2024-12-02 07:12:03,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2024-12-02 07:12:03,080 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:12:03,080 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:12:03,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-12-02 07:12:03,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:12:03,281 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:12:03,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:12:03,281 INFO L85 PathProgramCache]: Analyzing trace with hash -883311441, now seen corresponding path program 1 times
[2024-12-02 07:12:03,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:12:03,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471684372]
[2024-12-02 07:12:03,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:12:03,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:12:03,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:12:03,283 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:12:03,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-12-02 07:12:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:12:03,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-12-02 07:12:03,393 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:12:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:12:03,527 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:12:03,603 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 07:12:03,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26
[2024-12-02 07:12:03,934 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:12:03,934 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:12:03,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471684372]
[2024-12-02 07:12:03,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471684372] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:12:03,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:12:03,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2024-12-02 07:12:03,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649104173]
[2024-12-02 07:12:03,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:12:03,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-12-02 07:12:03,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:12:03,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-12-02 07:12:03,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132
[2024-12-02 07:12:03,935 INFO L87 Difference]: Start difference. First operand 138 states and 150 transitions. Second operand has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-12-02 07:12:04,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:12:04,670 INFO L93 Difference]: Finished difference Result 142 states and 154 transitions.
[2024-12-02 07:12:04,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-12-02 07:12:04,670 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29
[2024-12-02 07:12:04,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:12:04,671 INFO L225 Difference]: With dead ends: 142
[2024-12-02 07:12:04,671 INFO L226 Difference]: Without dead ends: 142
[2024-12-02 07:12:04,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132
[2024-12-02 07:12:04,672 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 6 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-12-02 07:12:04,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 894 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-12-02 07:12:04,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states.
[2024-12-02 07:12:04,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 138.
[2024-12-02 07:12:04,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 77 states have (on average 1.8311688311688312) internal successors, (141), 132 states have internal predecessors, (141), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 07:12:04,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 149 transitions.
[2024-12-02 07:12:04,674 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 149 transitions. Word has length 29
[2024-12-02 07:12:04,675 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:12:04,675 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 149 transitions.
[2024-12-02 07:12:04,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)
[2024-12-02 07:12:04,675 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 149 transitions.
[2024-12-02 07:12:04,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2024-12-02 07:12:04,675 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:12:04,675 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:12:04,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-12-02 07:12:04,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:12:04,876 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:12:04,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:12:04,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1612850921, now seen corresponding path program 1 times
[2024-12-02 07:12:04,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:12:04,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1295888838]
[2024-12-02 07:12:04,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:12:04,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:12:04,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:12:04,878 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:12:04,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-12-02 07:12:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:12:04,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-12-02 07:12:04,976 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:12:04,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-12-02 07:12:05,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:12:05,053 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:12:05,053 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:12:05,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295888838]
[2024-12-02 07:12:05,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295888838] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:12:05,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:12:05,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-12-02 07:12:05,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132325756]
[2024-12-02 07:12:05,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:12:05,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-12-02 07:12:05,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:12:05,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-12-02 07:12:05,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-12-02 07:12:05,054 INFO L87 Difference]: Start difference. First operand 138 states and 149 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 07:12:05,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:12:05,669 INFO L93 Difference]: Finished difference Result 137 states and 148 transitions.
[2024-12-02 07:12:05,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 07:12:05,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30
[2024-12-02 07:12:05,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:12:05,670 INFO L225 Difference]: With dead ends: 137
[2024-12-02 07:12:05,670 INFO L226 Difference]: Without dead ends: 137
[2024-12-02 07:12:05,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-12-02 07:12:05,671 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 7 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-12-02 07:12:05,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 456 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-12-02 07:12:05,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states.
[2024-12-02 07:12:05,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137.
[2024-12-02 07:12:05,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 77 states have (on average 1.8181818181818181) internal successors, (140), 131 states have internal predecessors, (140), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 07:12:05,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 148 transitions.
[2024-12-02 07:12:05,674 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 148 transitions. Word has length 30
[2024-12-02 07:12:05,675 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:12:05,675 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 148 transitions.
[2024-12-02 07:12:05,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 07:12:05,675 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 148 transitions.
[2024-12-02 07:12:05,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2024-12-02 07:12:05,675 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:12:05,676 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:12:05,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2024-12-02 07:12:05,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:12:05,876 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:12:05,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:12:05,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1612850920, now seen corresponding path program 1 times
[2024-12-02 07:12:05,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:12:05,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329808567]
[2024-12-02 07:12:05,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:12:05,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:12:05,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:12:05,878 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:12:05,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-12-02 07:12:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:12:05,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-12-02 07:12:05,994 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:12:06,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:12:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:12:06,117 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:12:06,117 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:12:06,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329808567]
[2024-12-02 07:12:06,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329808567] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:12:06,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:12:06,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-12-02 07:12:06,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110826155]
[2024-12-02 07:12:06,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:12:06,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-12-02 07:12:06,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:12:06,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-12-02 07:12:06,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-12-02 07:12:06,118 INFO L87 Difference]: Start difference. First operand 137 states and 148 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 07:12:06,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:12:06,709 INFO L93 Difference]: Finished difference Result 136 states and 147 transitions.
[2024-12-02 07:12:06,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 07:12:06,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30
[2024-12-02 07:12:06,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:12:06,710 INFO L225 Difference]: With dead ends: 136
[2024-12-02 07:12:06,710 INFO L226 Difference]: Without dead ends: 136
[2024-12-02 07:12:06,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-12-02 07:12:06,711 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 7 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-12-02 07:12:06,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 486 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-12-02 07:12:06,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states.
[2024-12-02 07:12:06,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136.
[2024-12-02 07:12:06,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 77 states have (on average 1.8051948051948052) internal successors, (139), 130 states have internal predecessors, (139), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-12-02 07:12:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 147 transitions.
[2024-12-02 07:12:06,717 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 147 transitions. Word has length 30
[2024-12-02 07:12:06,718 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:12:06,718 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 147 transitions.
[2024-12-02 07:12:06,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-12-02 07:12:06,718 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 147 transitions.
[2024-12-02 07:12:06,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-12-02 07:12:06,718 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:12:06,718 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:12:06,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2024-12-02 07:12:06,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:12:06,919 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:12:06,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:12:06,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1172634181, now seen corresponding path program 1 times
[2024-12-02 07:12:06,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:12:06,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190880028]
[2024-12-02 07:12:06,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:12:06,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:12:06,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:12:06,921 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:12:06,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-12-02 07:12:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:12:07,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-12-02 07:12:07,048 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:12:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-12-02 07:12:07,081 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:12:07,137 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-12-02 07:12:07,137 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:12:07,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190880028]
[2024-12-02 07:12:07,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190880028] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:12:07,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:12:07,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6
[2024-12-02 07:12:07,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996087011]
[2024-12-02 07:12:07,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:12:07,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 07:12:07,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:12:07,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 07:12:07,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2024-12-02 07:12:07,138 INFO L87 Difference]: Start difference. First operand 136 states and 147 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6)
[2024-12-02 07:12:07,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:12:07,165 INFO L93 Difference]: Finished difference Result 124 states and 131 transitions.
[2024-12-02 07:12:07,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-12-02 07:12:07,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 41
[2024-12-02 07:12:07,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:12:07,166 INFO L225 Difference]: With dead ends: 124
[2024-12-02 07:12:07,166 INFO L226 Difference]: Without dead ends: 124
[2024-12-02 07:12:07,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2024-12-02 07:12:07,167 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 0 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 07:12:07,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 490 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 07:12:07,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2024-12-02 07:12:07,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124.
[2024-12-02 07:12:07,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 70 states have (on average 1.7857142857142858) internal successors, (125), 119 states have internal predecessors, (125), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:12:07,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 131 transitions.
[2024-12-02 07:12:07,169 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 131 transitions. Word has length 41
[2024-12-02 07:12:07,170 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:12:07,170 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 131 transitions.
[2024-12-02 07:12:07,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6)
[2024-12-02 07:12:07,170 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 131 transitions.
[2024-12-02 07:12:07,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2024-12-02 07:12:07,170 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:12:07,170 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:12:07,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2024-12-02 07:12:07,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:12:07,371 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:12:07,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:12:07,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1447651543, now seen corresponding path program 1 times
[2024-12-02 07:12:07,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:12:07,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1140371364]
[2024-12-02 07:12:07,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:12:07,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:12:07,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:12:07,373 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:12:07,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-12-02 07:12:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:12:07,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:12:07,526 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:12:07,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-12-02 07:12:07,621 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size
[2024-12-02 07:12:07,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27
[2024-12-02 07:12:07,710 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true
[2024-12-02 07:12:07,805 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size
[2024-12-02 07:12:07,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36
[2024-12-02 07:12:07,965 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |node_create_~temp~0#1.base| (_ bv1 1)) |c_#valid|)) is different from true
[2024-12-02 07:12:08,015 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size
[2024-12-02 07:12:08,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32
[2024-12-02 07:12:08,055 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 21 not checked.
[2024-12-02 07:12:08,055 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:12:20,939 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:12:20,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140371364]
[2024-12-02 07:12:20,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140371364] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:12:20,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1880988601]
[2024-12-02 07:12:20,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:12:20,939 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-12-02 07:12:20,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4
[2024-12-02 07:12:20,941 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-12-02 07:12:20,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process
[2024-12-02 07:12:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:12:21,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 19 conjuncts are in the unsatisfiable core
[2024-12-02 07:12:21,320 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:12:21,359 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size
[2024-12-02 07:12:21,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20
[2024-12-02 07:12:21,401 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2024-12-02 07:12:21,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 11
[2024-12-02 07:12:21,544 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:12:21,568 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size
[2024-12-02 07:12:21,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29
[2024-12-02 07:12:21,682 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2024-12-02 07:12:21,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20
[2024-12-02 07:12:21,826 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:12:21,848 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size
[2024-12-02 07:12:21,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 38
[2024-12-02 07:12:22,160 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2024-12-02 07:12:22,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20
[2024-12-02 07:12:22,279 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:12:22,302 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size
[2024-12-02 07:12:22,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 38
[2024-12-02 07:12:22,448 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2024-12-02 07:12:22,448 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:12:22,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1880988601] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:12:22,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 07:12:22,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 18
[2024-12-02 07:12:22,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708670104]
[2024-12-02 07:12:22,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:12:22,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-12-02 07:12:22,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:12:22,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-12-02 07:12:22,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=318, Unknown=5, NotChecked=74, Total=462
[2024-12-02 07:12:22,450 INFO L87 Difference]: Start difference. First operand 124 states and 131 transitions. Second operand has 10 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:12:24,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:12:24,882 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions.
[2024-12-02 07:12:24,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-12-02 07:12:24,882 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 43
[2024-12-02 07:12:24,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:12:24,883 INFO L225 Difference]: With dead ends: 135
[2024-12-02 07:12:24,883 INFO L226 Difference]: Without dead ends: 135
[2024-12-02 07:12:24,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 88 SyntacticMatches, 9 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=103, Invalid=500, Unknown=5, NotChecked=94, Total=702
[2024-12-02 07:12:24,884 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 352 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time
[2024-12-02 07:12:24,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 286 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time]
[2024-12-02 07:12:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2024-12-02 07:12:24,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 116.
[2024-12-02 07:12:24,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 70 states have (on average 1.6714285714285715) internal successors, (117), 111 states have internal predecessors, (117), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:12:24,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 123 transitions.
[2024-12-02 07:12:24,887 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 123 transitions. Word has length 43
[2024-12-02 07:12:24,887 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:12:24,887 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 123 transitions.
[2024-12-02 07:12:24,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:12:24,888 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 123 transitions.
[2024-12-02 07:12:24,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2024-12-02 07:12:24,888 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:12:24,888 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:12:24,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0
[2024-12-02 07:12:25,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2024-12-02 07:12:25,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:12:25,289 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:12:25,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:12:25,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1447651544, now seen corresponding path program 1 times
[2024-12-02 07:12:25,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:12:25,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549860182]
[2024-12-02 07:12:25,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:12:25,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:12:25,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:12:25,291 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:12:25,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2024-12-02 07:12:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:12:25,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core
[2024-12-02 07:12:25,456 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:12:25,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:12:25,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-12-02 07:12:25,660 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size
[2024-12-02 07:12:25,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27
[2024-12-02 07:12:25,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 07:12:25,803 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true
[2024-12-02 07:12:25,850 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:12:25,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 07:12:25,872 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size
[2024-12-02 07:12:25,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22
[2024-12-02 07:12:25,972 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (= (store |c_old(#length)| |node_create_~temp~0#1.base| (_ bv12 32)) |c_#length|)) is different from true
[2024-12-02 07:12:26,019 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size
[2024-12-02 07:12:26,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18
[2024-12-02 07:12:26,095 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 21 not checked.
[2024-12-02 07:12:26,095 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:12:26,295 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:12:26,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549860182]
[2024-12-02 07:12:26,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549860182] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:12:26,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [857767231]
[2024-12-02 07:12:26,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:12:26,295 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-12-02 07:12:26,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4
[2024-12-02 07:12:26,296 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-12-02 07:12:26,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process
[2024-12-02 07:12:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:12:26,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:12:26,728 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:12:26,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:12:26,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-12-02 07:12:26,971 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:12:26,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 07:12:27,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-12-02 07:12:27,252 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:12:27,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 07:12:27,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-12-02 07:12:27,580 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:12:27,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 07:12:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2024-12-02 07:12:27,675 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:12:27,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [857767231] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:12:27,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 07:12:27,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 21
[2024-12-02 07:12:27,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409774339]
[2024-12-02 07:12:27,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:12:27,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-12-02 07:12:27,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:12:27,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-12-02 07:12:27,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=396, Unknown=2, NotChecked=82, Total=552
[2024-12-02 07:12:27,676 INFO L87 Difference]: Start difference. First operand 116 states and 123 transitions. Second operand has 9 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:12:32,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 07:12:37,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 07:12:37,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:12:37,322 INFO L93 Difference]: Finished difference Result 109 states and 116 transitions.
[2024-12-02 07:12:37,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-12-02 07:12:37,323 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 43
[2024-12-02 07:12:37,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:12:37,324 INFO L225 Difference]: With dead ends: 109
[2024-12-02 07:12:37,324 INFO L226 Difference]: Without dead ends: 109
[2024-12-02 07:12:37,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=430, Unknown=2, NotChecked=86, Total=600
[2024-12-02 07:12:37,325 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 148 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 10 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time
[2024-12-02 07:12:37,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 311 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 235 Invalid, 6 Unknown, 0 Unchecked, 9.5s Time]
[2024-12-02 07:12:37,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2024-12-02 07:12:37,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108.
[2024-12-02 07:12:37,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 103 states have internal predecessors, (109), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:12:37,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 115 transitions.
[2024-12-02 07:12:37,329 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 115 transitions. Word has length 43
[2024-12-02 07:12:37,329 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:12:37,329 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 115 transitions.
[2024-12-02 07:12:37,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:12:37,329 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 115 transitions.
[2024-12-02 07:12:37,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-12-02 07:12:37,330 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:12:37,330 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:12:37,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2024-12-02 07:12:37,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0
[2024-12-02 07:12:37,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt
[2024-12-02 07:12:37,730 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:12:37,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:12:37,731 INFO L85 PathProgramCache]: Analyzing trace with hash -376270504, now seen corresponding path program 1 times
[2024-12-02 07:12:37,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:12:37,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340128917]
[2024-12-02 07:12:37,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:12:37,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:12:37,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:12:37,733 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:12:37,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2024-12-02 07:12:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:12:37,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-12-02 07:12:37,872 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:12:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-12-02 07:12:37,999 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:12:37,999 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:12:37,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340128917]
[2024-12-02 07:12:37,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340128917] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:12:37,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:12:37,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 07:12:37,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038768686]
[2024-12-02 07:12:37,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:12:38,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 07:12:38,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:12:38,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 07:12:38,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-12-02 07:12:38,000 INFO L87 Difference]: Start difference. First operand 108 states and 115 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-12-02 07:12:38,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:12:38,917 INFO L93 Difference]: Finished difference Result 104 states and 111 transitions.
[2024-12-02 07:12:38,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 07:12:38,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45
[2024-12-02 07:12:38,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:12:38,919 INFO L225 Difference]: With dead ends: 104
[2024-12-02 07:12:38,919 INFO L226 Difference]: Without dead ends: 104
[2024-12-02 07:12:38,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-12-02 07:12:38,919 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 19 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2024-12-02 07:12:38,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 294 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2024-12-02 07:12:38,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2024-12-02 07:12:38,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104.
[2024-12-02 07:12:38,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 70 states have (on average 1.5) internal successors, (105), 99 states have internal predecessors, (105), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:12:38,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 111 transitions.
[2024-12-02 07:12:38,923 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 111 transitions. Word has length 45
[2024-12-02 07:12:38,924 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:12:38,924 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 111 transitions.
[2024-12-02 07:12:38,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-12-02 07:12:38,924 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 111 transitions.
[2024-12-02 07:12:38,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-12-02 07:12:38,924 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:12:38,924 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:12:38,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2024-12-02 07:12:39,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:12:39,125 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:12:39,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:12:39,125 INFO L85 PathProgramCache]: Analyzing trace with hash -376270503, now seen corresponding path program 1 times
[2024-12-02 07:12:39,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:12:39,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576130200]
[2024-12-02 07:12:39,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:12:39,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:12:39,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:12:39,127 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:12:39,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2024-12-02 07:12:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:12:39,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-12-02 07:12:39,312 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:12:39,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8
[2024-12-02 07:12:39,842 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:12:39,842 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:12:40,028 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2024-12-02 07:12:40,028 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:12:40,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576130200]
[2024-12-02 07:12:40,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576130200] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:12:40,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:12:40,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 11
[2024-12-02 07:12:40,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260297960]
[2024-12-02 07:12:40,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:12:40,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-12-02 07:12:40,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:12:40,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-12-02 07:12:40,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-12-02 07:12:40,030 INFO L87 Difference]: Start difference. First operand 104 states and 111 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2024-12-02 07:12:44,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 07:12:48,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 07:12:52,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 07:12:56,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 07:13:00,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 07:13:04,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 07:13:05,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:13:05,078 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions.
[2024-12-02 07:13:05,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-12-02 07:13:05,079 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45
[2024-12-02 07:13:05,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:13:05,080 INFO L225 Difference]: With dead ends: 107
[2024-12-02 07:13:05,080 INFO L226 Difference]: Without dead ends: 107
[2024-12-02 07:13:05,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182
[2024-12-02 07:13:05,080 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 93 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time
[2024-12-02 07:13:05,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 736 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 228 Invalid, 6 Unknown, 0 Unchecked, 24.9s Time]
[2024-12-02 07:13:05,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2024-12-02 07:13:05,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107.
[2024-12-02 07:13:05,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 74 states have (on average 1.4324324324324325) internal successors, (106), 101 states have internal predecessors, (106), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:13:05,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions.
[2024-12-02 07:13:05,083 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 45
[2024-12-02 07:13:05,083 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:13:05,083 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 112 transitions.
[2024-12-02 07:13:05,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2024-12-02 07:13:05,083 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 112 transitions.
[2024-12-02 07:13:05,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2024-12-02 07:13:05,083 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:13:05,084 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:13:05,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0
[2024-12-02 07:13:05,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:13:05,284 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:13:05,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:13:05,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1220527209, now seen corresponding path program 1 times
[2024-12-02 07:13:05,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:13:05,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1950186260]
[2024-12-02 07:13:05,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:13:05,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:13:05,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:13:05,286 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:13:05,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2024-12-02 07:13:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:13:05,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 17 conjuncts are in the unsatisfiable core
[2024-12-02 07:13:05,438 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:13:05,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5
[2024-12-02 07:13:05,806 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true
[2024-12-02 07:13:05,960 INFO L349 Elim1Store]: treesize reduction 36, result has 35.7 percent of original size
[2024-12-02 07:13:05,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 28
[2024-12-02 07:13:05,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11
[2024-12-02 07:13:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 5 not checked.
[2024-12-02 07:13:06,050 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:13:10,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12
[2024-12-02 07:13:11,059 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-12-02 07:13:11,059 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:13:11,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950186260]
[2024-12-02 07:13:11,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950186260] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:13:11,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:13:11,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13
[2024-12-02 07:13:11,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435095320]
[2024-12-02 07:13:11,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:13:11,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-12-02 07:13:11,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:13:11,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-12-02 07:13:11,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=130, Unknown=2, NotChecked=22, Total=182
[2024-12-02 07:13:11,061 INFO L87 Difference]: Start difference. First operand 107 states and 112 transitions. Second operand has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 11 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2024-12-02 07:13:13,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:13:13,032 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions.
[2024-12-02 07:13:13,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-12-02 07:13:13,032 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 11 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46
[2024-12-02 07:13:13,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:13:13,033 INFO L225 Difference]: With dead ends: 106
[2024-12-02 07:13:13,033 INFO L226 Difference]: Without dead ends: 106
[2024-12-02 07:13:13,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=42, Invalid=200, Unknown=2, NotChecked=28, Total=272
[2024-12-02 07:13:13,033 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 14 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time
[2024-12-02 07:13:13,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 521 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 480 Invalid, 0 Unknown, 97 Unchecked, 1.8s Time]
[2024-12-02 07:13:13,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states.
[2024-12-02 07:13:13,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106.
[2024-12-02 07:13:13,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 74 states have (on average 1.4189189189189189) internal successors, (105), 100 states have internal predecessors, (105), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:13:13,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions.
[2024-12-02 07:13:13,036 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 46
[2024-12-02 07:13:13,036 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:13:13,036 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions.
[2024-12-02 07:13:13,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 11 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2024-12-02 07:13:13,036 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions.
[2024-12-02 07:13:13,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2024-12-02 07:13:13,036 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:13:13,036 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:13:13,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0
[2024-12-02 07:13:13,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:13:13,237 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:13:13,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:13:13,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1220527210, now seen corresponding path program 1 times
[2024-12-02 07:13:13,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:13:13,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [176335713]
[2024-12-02 07:13:13,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:13:13,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:13:13,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:13:13,239 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:13:13,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2024-12-02 07:13:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:13:13,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 30 conjuncts are in the unsatisfiable core
[2024-12-02 07:13:13,389 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:13:13,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:13:13,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-12-02 07:13:14,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5
[2024-12-02 07:13:14,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3
[2024-12-02 07:13:14,241 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_dll_circular_append_~head#1.offset_BEFORE_CALL_7| (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_append_~head#1.base_BEFORE_CALL_10| (_ BitVec 32))) (= (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_dll_circular_append_~head#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_dll_circular_append_~head#1.offset_BEFORE_CALL_7|) (_ bv0 32))) (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|))))) is different from true
[2024-12-02 07:13:14,432 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size
[2024-12-02 07:13:14,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17
[2024-12-02 07:13:14,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13
[2024-12-02 07:13:14,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-12-02 07:13:14,737 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 7 not checked.
[2024-12-02 07:13:14,738 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:13:15,460 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:13:15,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176335713]
[2024-12-02 07:13:15,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176335713] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:13:15,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1990908483]
[2024-12-02 07:13:15,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:13:15,460 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-12-02 07:13:15,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4
[2024-12-02 07:13:15,462 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-12-02 07:13:15,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process
[2024-12-02 07:13:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:13:15,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 31 conjuncts are in the unsatisfiable core
[2024-12-02 07:13:15,925 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:13:16,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:13:16,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-12-02 07:13:17,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3
[2024-12-02 07:13:17,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5
[2024-12-02 07:13:17,390 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_dll_circular_append_~head#1.base_BEFORE_CALL_11| (_ BitVec 32))) (= (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_dll_circular_append_~head#1.base_BEFORE_CALL_11|) (_ bv0 32)) (_ bv0 32))) (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|))))) is different from true
[2024-12-02 07:13:17,548 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:13:17,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13
[2024-12-02 07:13:17,587 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size
[2024-12-02 07:13:17,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17
[2024-12-02 07:13:17,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-12-02 07:13:17,865 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 7 not checked.
[2024-12-02 07:13:17,866 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:13:22,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1990908483] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:13:22,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:13:22,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 21
[2024-12-02 07:13:22,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037515451]
[2024-12-02 07:13:22,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:13:22,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-12-02 07:13:22,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:13:22,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-12-02 07:13:22,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=444, Unknown=2, NotChecked=86, Total=600
[2024-12-02 07:13:22,371 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand has 22 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6)
[2024-12-02 07:13:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:13:26,342 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions.
[2024-12-02 07:13:26,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2024-12-02 07:13:26,343 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 46
[2024-12-02 07:13:26,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:13:26,343 INFO L225 Difference]: With dead ends: 105
[2024-12-02 07:13:26,343 INFO L226 Difference]: Without dead ends: 105
[2024-12-02 07:13:26,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=99, Invalid=663, Unknown=2, NotChecked=106, Total=870
[2024-12-02 07:13:26,344 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 73 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2024-12-02 07:13:26,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 622 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 807 Invalid, 1 Unknown, 206 Unchecked, 3.4s Time]
[2024-12-02 07:13:26,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2024-12-02 07:13:26,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105.
[2024-12-02 07:13:26,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 99 states have internal predecessors, (104), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:13:26,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions.
[2024-12-02 07:13:26,348 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 46
[2024-12-02 07:13:26,348 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:13:26,348 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions.
[2024-12-02 07:13:26,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6)
[2024-12-02 07:13:26,348 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions.
[2024-12-02 07:13:26,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2024-12-02 07:13:26,349 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:13:26,349 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:13:26,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0
[2024-12-02 07:13:26,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0
[2024-12-02 07:13:26,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:13:26,749 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:13:26,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:13:26,750 INFO L85 PathProgramCache]: Analyzing trace with hash 400577194, now seen corresponding path program 1 times
[2024-12-02 07:13:26,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:13:26,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [977961309]
[2024-12-02 07:13:26,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:13:26,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:13:26,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:13:26,752 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:13:26,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2024-12-02 07:13:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:13:26,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 37 conjuncts are in the unsatisfiable core
[2024-12-02 07:13:26,920 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:13:27,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-12-02 07:13:27,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2024-12-02 07:13:27,775 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size
[2024-12-02 07:13:27,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11
[2024-12-02 07:13:28,248 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= |c_#memory_$Pointer$#2.base| (store |c_old(#memory_$Pointer$#2.base)| |node_create_~temp~0#1.base| (select |c_#memory_$Pointer$#2.base| |node_create_~temp~0#1.base|))) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) (exists ((|v_ULTIMATE.start_dll_circular_append_~head#1.offset_BEFORE_CALL_9| (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_append_~head#1.base_BEFORE_CALL_12| (_ BitVec 32))) (= (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_dll_circular_append_~head#1.base_BEFORE_CALL_12|) |v_ULTIMATE.start_dll_circular_append_~head#1.offset_BEFORE_CALL_9|) (_ bv0 32)))) is different from true
[2024-12-02 07:13:28,330 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:13:28,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19
[2024-12-02 07:13:28,457 INFO L349 Elim1Store]: treesize reduction 106, result has 30.7 percent of original size
[2024-12-02 07:13:28,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 60
[2024-12-02 07:13:28,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22
[2024-12-02 07:13:28,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11
[2024-12-02 07:13:29,001 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked.
[2024-12-02 07:13:29,002 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:13:29,908 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:13:29,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977961309]
[2024-12-02 07:13:29,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977961309] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:13:29,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1281464115]
[2024-12-02 07:13:29,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:13:29,909 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-12-02 07:13:29,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4
[2024-12-02 07:13:29,910 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-12-02 07:13:29,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process
[2024-12-02 07:13:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:13:30,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 44 conjuncts are in the unsatisfiable core
[2024-12-02 07:13:30,341 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:13:30,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-12-02 07:13:31,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-12-02 07:13:32,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2024-12-02 07:13:32,246 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size
[2024-12-02 07:13:32,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11
[2024-12-02 07:13:44,992 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= |c_#memory_$Pointer$#2.base| (store |c_old(#memory_$Pointer$#2.base)| |node_create_~temp~0#1.base| (select |c_#memory_$Pointer$#2.base| |node_create_~temp~0#1.base|))) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) (exists ((|v_ULTIMATE.start_dll_circular_append_~head#1.base_BEFORE_CALL_13| (_ BitVec 32))) (= (_ bv0 32) (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_dll_circular_append_~head#1.base_BEFORE_CALL_13|) (_ bv0 32))))) is different from true
[2024-12-02 07:13:45,069 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:13:45,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19
[2024-12-02 07:13:45,194 INFO L349 Elim1Store]: treesize reduction 106, result has 30.7 percent of original size
[2024-12-02 07:13:45,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 60
[2024-12-02 07:13:45,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22
[2024-12-02 07:13:45,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11
[2024-12-02 07:13:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked.
[2024-12-02 07:13:45,647 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:13:45,861 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_node_create_~temp~0#1.base_125| (_ BitVec 32)) (v_ArrVal_1672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1671 (_ BitVec 1))) (or (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| |v_node_create_~temp~0#1.base_125| v_ArrVal_1671) (select (select (store |c_#memory_$Pointer$#2.base| |v_node_create_~temp~0#1.base_125| v_ArrVal_1672) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))))) (not (= (_ bv0 1) (select |c_#valid| |v_node_create_~temp~0#1.base_125|))))) is different from false
[2024-12-02 07:13:45,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1281464115] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:13:45,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:13:45,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 34
[2024-12-02 07:13:45,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600284351]
[2024-12-02 07:13:45,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:13:45,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states
[2024-12-02 07:13:45,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:13:45,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2024-12-02 07:13:45,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1147, Unknown=13, NotChecked=210, Total=1482
[2024-12-02 07:13:45,868 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand has 35 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 31 states have internal predecessors, (72), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-12-02 07:13:50,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:13:50,995 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions.
[2024-12-02 07:13:50,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2024-12-02 07:13:50,996 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 31 states have internal predecessors, (72), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 48
[2024-12-02 07:13:50,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:13:50,997 INFO L225 Difference]: With dead ends: 104
[2024-12-02 07:13:50,997 INFO L226 Difference]: Without dead ends: 104
[2024-12-02 07:13:50,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 70 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 3 IntricatePredicates, 2 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=173, Invalid=1718, Unknown=13, NotChecked=258, Total=2162
[2024-12-02 07:13:50,998 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 58 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time
[2024-12-02 07:13:50,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 933 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 938 Invalid, 1 Unknown, 212 Unchecked, 4.1s Time]
[2024-12-02 07:13:50,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2024-12-02 07:13:51,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104.
[2024-12-02 07:13:51,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 74 states have (on average 1.3918918918918919) internal successors, (103), 98 states have internal predecessors, (103), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:13:51,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions.
[2024-12-02 07:13:51,000 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 48
[2024-12-02 07:13:51,000 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:13:51,001 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 109 transitions.
[2024-12-02 07:13:51,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 31 states have internal predecessors, (72), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-12-02 07:13:51,001 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 109 transitions.
[2024-12-02 07:13:51,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2024-12-02 07:13:51,001 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:13:51,001 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:13:51,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2024-12-02 07:13:51,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0
[2024-12-02 07:13:51,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt
[2024-12-02 07:13:51,402 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:13:51,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:13:51,402 INFO L85 PathProgramCache]: Analyzing trace with hash 400577195, now seen corresponding path program 1 times
[2024-12-02 07:13:51,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:13:51,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185626864]
[2024-12-02 07:13:51,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:13:51,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:13:51,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:13:51,404 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:13:51,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2024-12-02 07:13:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:13:51,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 54 conjuncts are in the unsatisfiable core
[2024-12-02 07:13:51,611 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:13:52,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-12-02 07:13:52,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 07:13:53,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13
[2024-12-02 07:13:53,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3
[2024-12-02 07:13:53,092 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size
[2024-12-02 07:13:53,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11
[2024-12-02 07:13:53,740 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_dll_circular_append_~head#1.offset_BEFORE_CALL_11| (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_append_~head#1.base_BEFORE_CALL_14| (_ BitVec 32))) (= (_ bv0 32) (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_dll_circular_append_~head#1.base_BEFORE_CALL_14|) |v_ULTIMATE.start_dll_circular_append_~head#1.offset_BEFORE_CALL_11|))) (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= |c_#memory_$Pointer$#2.base| (store |c_old(#memory_$Pointer$#2.base)| |node_create_~temp~0#1.base| (select |c_#memory_$Pointer$#2.base| |node_create_~temp~0#1.base|))) (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (= |c_#memory_$Pointer$#2.offset| (store |c_old(#memory_$Pointer$#2.offset)| |node_create_~temp~0#1.base| (select |c_#memory_$Pointer$#2.offset| |node_create_~temp~0#1.base|)))))) is different from true
[2024-12-02 07:13:53,851 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:13:53,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 26
[2024-12-02 07:13:53,948 INFO L349 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size
[2024-12-02 07:13:53,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34
[2024-12-02 07:13:53,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17
[2024-12-02 07:13:53,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2024-12-02 07:13:54,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20
[2024-12-02 07:13:54,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-12-02 07:13:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 6 not checked.
[2024-12-02 07:13:54,692 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:13:56,456 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:13:56,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185626864]
[2024-12-02 07:13:56,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185626864] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:13:56,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1286084951]
[2024-12-02 07:13:56,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:13:56,457 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-12-02 07:13:56,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4
[2024-12-02 07:13:56,458 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-12-02 07:13:56,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process
[2024-12-02 07:13:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:13:57,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 68 conjuncts are in the unsatisfiable core
[2024-12-02 07:13:57,015 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:13:57,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:13:57,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-12-02 07:13:59,037 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size
[2024-12-02 07:13:59,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27
[2024-12-02 07:13:59,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 07:14:00,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 07:14:00,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-12-02 07:14:01,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21
[2024-12-02 07:14:01,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11
[2024-12-02 07:14:01,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3
[2024-12-02 07:14:01,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-12-02 07:14:14,639 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_dll_circular_append_~head#1.base_BEFORE_CALL_15| (_ BitVec 32))) (= (_ bv0 32) (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_dll_circular_append_~head#1.base_BEFORE_CALL_15|) (_ bv0 32)))) (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= |c_#memory_$Pointer$#2.base| (store |c_old(#memory_$Pointer$#2.base)| |node_create_~temp~0#1.base| (select |c_#memory_$Pointer$#2.base| |node_create_~temp~0#1.base|))) (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (= |c_#memory_$Pointer$#2.offset| (store |c_old(#memory_$Pointer$#2.offset)| |node_create_~temp~0#1.base| (select |c_#memory_$Pointer$#2.offset| |node_create_~temp~0#1.base|)))))) is different from true
[2024-12-02 07:14:14,740 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:14:14,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 36
[2024-12-02 07:14:14,754 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:14:14,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17
[2024-12-02 07:14:14,833 INFO L349 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size
[2024-12-02 07:14:14,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34
[2024-12-02 07:14:14,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2024-12-02 07:14:15,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 28
[2024-12-02 07:14:15,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13
[2024-12-02 07:14:15,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3
[2024-12-02 07:14:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked.
[2024-12-02 07:14:16,013 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:14:16,435 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse1 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (and (forall ((|v_node_create_~temp~0#1.base_134| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_node_create_~temp~0#1.base_134|))) (forall ((v_ArrVal_1893 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1894 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1892 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#2.offset| |v_node_create_~temp~0#1.base_134| v_ArrVal_1893) .cse0) .cse1)) (select (store |c_#length| |v_node_create_~temp~0#1.base_134| v_ArrVal_1892) (select (select (store |c_#memory_$Pointer$#2.base| |v_node_create_~temp~0#1.base_134| v_ArrVal_1894) .cse0) .cse1)))))) (forall ((|v_node_create_~temp~0#1.base_134| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_node_create_~temp~0#1.base_134|))) (forall ((v_ArrVal_1893 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| |v_node_create_~temp~0#1.base_134| v_ArrVal_1893) .cse0) .cse1))) (bvule .cse2 (bvadd (_ bv4 32) .cse2)))))))) is different from false
[2024-12-02 07:14:16,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1286084951] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:14:16,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:14:16,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24] total 45
[2024-12-02 07:14:16,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711422267]
[2024-12-02 07:14:16,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:14:16,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states
[2024-12-02 07:14:16,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:14:16,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2024-12-02 07:14:16,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2196, Unknown=10, NotChecked=288, Total=2652
[2024-12-02 07:14:16,446 INFO L87 Difference]: Start difference. First operand 104 states and 109 transitions. Second operand has 46 states, 42 states have (on average 1.9285714285714286) internal successors, (81), 39 states have internal predecessors, (81), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-12-02 07:14:30,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:14:30,679 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions.
[2024-12-02 07:14:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2024-12-02 07:14:30,679 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 42 states have (on average 1.9285714285714286) internal successors, (81), 39 states have internal predecessors, (81), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 48
[2024-12-02 07:14:30,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:14:30,680 INFO L225 Difference]: With dead ends: 103
[2024-12-02 07:14:30,680 INFO L226 Difference]: Without dead ends: 103
[2024-12-02 07:14:30,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=281, Invalid=3502, Unknown=11, NotChecked=366, Total=4160
[2024-12-02 07:14:30,683 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 64 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 210 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time
[2024-12-02 07:14:30,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1275 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1527 Invalid, 0 Unknown, 210 Unchecked, 7.7s Time]
[2024-12-02 07:14:30,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2024-12-02 07:14:30,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103.
[2024-12-02 07:14:30,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 74 states have (on average 1.3783783783783783) internal successors, (102), 97 states have internal predecessors, (102), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:14:30,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions.
[2024-12-02 07:14:30,686 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 48
[2024-12-02 07:14:30,686 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:14:30,686 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions.
[2024-12-02 07:14:30,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 42 states have (on average 1.9285714285714286) internal successors, (81), 39 states have internal predecessors, (81), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-12-02 07:14:30,686 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions.
[2024-12-02 07:14:30,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2024-12-02 07:14:30,687 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:14:30,687 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:14:30,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2024-12-02 07:14:30,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0
[2024-12-02 07:14:31,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt
[2024-12-02 07:14:31,087 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:14:31,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:14:31,088 INFO L85 PathProgramCache]: Analyzing trace with hash -467008833, now seen corresponding path program 1 times
[2024-12-02 07:14:31,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:14:31,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288060335]
[2024-12-02 07:14:31,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:14:31,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:14:31,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:14:31,089 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:14:31,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2024-12-02 07:14:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:14:31,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 07:14:31,278 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:14:31,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:14:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2024-12-02 07:14:31,696 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:14:31,696 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:14:31,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288060335]
[2024-12-02 07:14:31,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288060335] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:14:31,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:14:31,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 07:14:31,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826096988]
[2024-12-02 07:14:31,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:14:31,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 07:14:31,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:14:31,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 07:14:31,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-12-02 07:14:31,698 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-12-02 07:14:32,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:14:32,660 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions.
[2024-12-02 07:14:32,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 07:14:32,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49
[2024-12-02 07:14:32,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:14:32,662 INFO L225 Difference]: With dead ends: 101
[2024-12-02 07:14:32,662 INFO L226 Difference]: Without dead ends: 101
[2024-12-02 07:14:32,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-12-02 07:14:32,663 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 7 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2024-12-02 07:14:32,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 306 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2024-12-02 07:14:32,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2024-12-02 07:14:32,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101.
[2024-12-02 07:14:32,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 74 states have (on average 1.3513513513513513) internal successors, (100), 95 states have internal predecessors, (100), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:14:32,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions.
[2024-12-02 07:14:32,666 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 49
[2024-12-02 07:14:32,667 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:14:32,667 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 106 transitions.
[2024-12-02 07:14:32,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-12-02 07:14:32,667 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 106 transitions.
[2024-12-02 07:14:32,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2024-12-02 07:14:32,667 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:14:32,667 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:14:32,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0
[2024-12-02 07:14:32,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:14:32,868 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:14:32,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:14:32,868 INFO L85 PathProgramCache]: Analyzing trace with hash -697065997, now seen corresponding path program 1 times
[2024-12-02 07:14:32,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:14:32,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [240406125]
[2024-12-02 07:14:32,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:14:32,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:14:32,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:14:32,870 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:14:32,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2024-12-02 07:14:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:14:33,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-12-02 07:14:33,049 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:14:33,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11
[2024-12-02 07:14:33,209 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2024-12-02 07:14:33,210 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:14:33,210 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:14:33,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240406125]
[2024-12-02 07:14:33,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240406125] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:14:33,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:14:33,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 07:14:33,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947193938]
[2024-12-02 07:14:33,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:14:33,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 07:14:33,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:14:33,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 07:14:33,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-12-02 07:14:33,211 INFO L87 Difference]: Start difference. First operand 101 states and 106 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-12-02 07:14:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:14:33,807 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions.
[2024-12-02 07:14:33,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-12-02 07:14:33,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 54
[2024-12-02 07:14:33,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:14:33,809 INFO L225 Difference]: With dead ends: 100
[2024-12-02 07:14:33,809 INFO L226 Difference]: Without dead ends: 100
[2024-12-02 07:14:33,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-12-02 07:14:33,809 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-12-02 07:14:33,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 279 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-12-02 07:14:33,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2024-12-02 07:14:33,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100.
[2024-12-02 07:14:33,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 74 states have (on average 1.337837837837838) internal successors, (99), 94 states have internal predecessors, (99), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:14:33,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions.
[2024-12-02 07:14:33,812 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 54
[2024-12-02 07:14:33,812 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:14:33,812 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions.
[2024-12-02 07:14:33,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-12-02 07:14:33,812 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions.
[2024-12-02 07:14:33,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2024-12-02 07:14:33,812 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:14:33,813 INFO L218 NwaCegarLoop]: trace histogram [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]
[2024-12-02 07:14:33,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0
[2024-12-02 07:14:34,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:14:34,013 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:14:34,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:14:34,013 INFO L85 PathProgramCache]: Analyzing trace with hash -697065996, now seen corresponding path program 1 times
[2024-12-02 07:14:34,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:14:34,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340220945]
[2024-12-02 07:14:34,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:14:34,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:14:34,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:14:34,015 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:14:34,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
[2024-12-02 07:14:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:14:34,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 17 conjuncts are in the unsatisfiable core
[2024-12-02 07:14:34,210 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:14:35,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-12-02 07:14:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:14:35,370 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:14:35,861 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 07:14:35,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 44
[2024-12-02 07:14:36,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12
[2024-12-02 07:14:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2024-12-02 07:14:37,464 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:14:37,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340220945]
[2024-12-02 07:14:37,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340220945] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:14:37,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:14:37,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22
[2024-12-02 07:14:37,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290566606]
[2024-12-02 07:14:37,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:14:37,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-12-02 07:14:37,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:14:37,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-12-02 07:14:37,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506
[2024-12-02 07:14:37,466 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand has 23 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 21 states have internal predecessors, (78), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5)
[2024-12-02 07:14:41,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 07:14:45,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 07:14:50,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 07:14:54,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 07:14:58,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 07:15:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:15:00,342 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions.
[2024-12-02 07:15:00,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2024-12-02 07:15:00,344 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 21 states have internal predecessors, (78), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 54
[2024-12-02 07:15:00,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:15:00,344 INFO L225 Difference]: With dead ends: 99
[2024-12-02 07:15:00,344 INFO L226 Difference]: Without dead ends: 99
[2024-12-02 07:15:00,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650
[2024-12-02 07:15:00,345 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 59 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time
[2024-12-02 07:15:00,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 709 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 329 Invalid, 5 Unknown, 0 Unchecked, 22.5s Time]
[2024-12-02 07:15:00,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2024-12-02 07:15:00,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99.
[2024-12-02 07:15:00,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 93 states have internal predecessors, (98), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:15:00,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions.
[2024-12-02 07:15:00,347 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 54
[2024-12-02 07:15:00,347 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:15:00,347 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions.
[2024-12-02 07:15:00,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 21 states have internal predecessors, (78), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5)
[2024-12-02 07:15:00,348 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions.
[2024-12-02 07:15:00,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2024-12-02 07:15:00,348 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:15:00,348 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1]
[2024-12-02 07:15:00,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0
[2024-12-02 07:15:00,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:15:00,548 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:15:00,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:15:00,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1004500758, now seen corresponding path program 1 times
[2024-12-02 07:15:00,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:15:00,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045172766]
[2024-12-02 07:15:00,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:15:00,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:15:00,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:15:00,551 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:15:00,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2024-12-02 07:15:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:15:00,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-12-02 07:15:00,762 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:15:01,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11
[2024-12-02 07:15:01,162 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2024-12-02 07:15:01,162 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:15:01,163 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:15:01,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045172766]
[2024-12-02 07:15:01,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045172766] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:15:01,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:15:01,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-12-02 07:15:01,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477982512]
[2024-12-02 07:15:01,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:15:01,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-12-02 07:15:01,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:15:01,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-12-02 07:15:01,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-12-02 07:15:01,164 INFO L87 Difference]: Start difference. First operand 99 states and 104 transitions. Second operand has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:15:02,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:15:02,304 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions.
[2024-12-02 07:15:02,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-12-02 07:15:02,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59
[2024-12-02 07:15:02,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:15:02,305 INFO L225 Difference]: With dead ends: 103
[2024-12-02 07:15:02,305 INFO L226 Difference]: Without dead ends: 103
[2024-12-02 07:15:02,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110
[2024-12-02 07:15:02,306 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 45 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2024-12-02 07:15:02,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 343 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2024-12-02 07:15:02,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2024-12-02 07:15:02,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99.
[2024-12-02 07:15:02,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 75 states have (on average 1.32) internal successors, (99), 93 states have internal predecessors, (99), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:15:02,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions.
[2024-12-02 07:15:02,310 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 59
[2024-12-02 07:15:02,310 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:15:02,310 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions.
[2024-12-02 07:15:02,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-12-02 07:15:02,310 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions.
[2024-12-02 07:15:02,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2024-12-02 07:15:02,311 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:15:02,311 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1]
[2024-12-02 07:15:02,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0
[2024-12-02 07:15:02,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:15:02,511 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:15:02,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:15:02,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1004500757, now seen corresponding path program 1 times
[2024-12-02 07:15:02,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:15:02,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573804405]
[2024-12-02 07:15:02,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:15:02,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:15:02,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:15:02,513 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:15:02,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2024-12-02 07:15:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:15:02,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 35 conjuncts are in the unsatisfiable core
[2024-12-02 07:15:02,737 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:15:02,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-12-02 07:15:02,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:15:03,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5
[2024-12-02 07:15:03,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3
[2024-12-02 07:15:03,914 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_dll_circular_append_~head#1.base_BEFORE_CALL_19| (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_append_~head#1.offset_BEFORE_CALL_16| (_ BitVec 32))) (= (_ bv0 32) (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_dll_circular_append_~head#1.base_BEFORE_CALL_19|) |v_ULTIMATE.start_dll_circular_append_~head#1.offset_BEFORE_CALL_16|))) (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|))))) is different from true
[2024-12-02 07:15:04,146 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size
[2024-12-02 07:15:04,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17
[2024-12-02 07:15:04,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13
[2024-12-02 07:15:05,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-12-02 07:15:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 7 not checked.
[2024-12-02 07:15:05,398 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:15:07,646 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:15:07,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573804405]
[2024-12-02 07:15:07,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573804405] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:15:07,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [216258954]
[2024-12-02 07:15:07,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:15:07,647 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-12-02 07:15:07,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4
[2024-12-02 07:15:07,648 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-12-02 07:15:07,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process
[2024-12-02 07:15:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:15:08,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 41 conjuncts are in the unsatisfiable core
[2024-12-02 07:15:08,419 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:15:08,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-12-02 07:15:08,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:15:10,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5
[2024-12-02 07:15:10,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3
[2024-12-02 07:15:11,288 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size
[2024-12-02 07:15:11,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17
[2024-12-02 07:15:11,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13
[2024-12-02 07:15:13,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-12-02 07:15:13,252 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:15:13,253 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:15:14,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [216258954] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:15:14,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:15:14,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 28
[2024-12-02 07:15:14,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431244228]
[2024-12-02 07:15:14,880 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:15:14,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2024-12-02 07:15:14,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:15:14,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2024-12-02 07:15:14,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1048, Unknown=1, NotChecked=66, Total=1260
[2024-12-02 07:15:14,881 INFO L87 Difference]: Start difference. First operand 99 states and 105 transitions. Second operand has 29 states, 26 states have (on average 3.423076923076923) internal successors, (89), 24 states have internal predecessors, (89), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6)
[2024-12-02 07:15:21,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:15:21,701 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions.
[2024-12-02 07:15:21,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2024-12-02 07:15:21,703 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 3.423076923076923) internal successors, (89), 24 states have internal predecessors, (89), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 59
[2024-12-02 07:15:21,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:15:21,703 INFO L225 Difference]: With dead ends: 105
[2024-12-02 07:15:21,703 INFO L226 Difference]: Without dead ends: 105
[2024-12-02 07:15:21,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=187, Invalid=1376, Unknown=1, NotChecked=76, Total=1640
[2024-12-02 07:15:21,704 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 78 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time
[2024-12-02 07:15:21,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 790 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 999 Invalid, 0 Unknown, 103 Unchecked, 5.8s Time]
[2024-12-02 07:15:21,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2024-12-02 07:15:21,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101.
[2024-12-02 07:15:21,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 95 states have internal predecessors, (101), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:15:21,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions.
[2024-12-02 07:15:21,706 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 59
[2024-12-02 07:15:21,706 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:15:21,707 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions.
[2024-12-02 07:15:21,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 3.423076923076923) internal successors, (89), 24 states have internal predecessors, (89), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6)
[2024-12-02 07:15:21,707 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions.
[2024-12-02 07:15:21,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2024-12-02 07:15:21,707 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:15:21,707 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:15:21,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0
[2024-12-02 07:15:21,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0
[2024-12-02 07:15:22,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt
[2024-12-02 07:15:22,108 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:15:22,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:15:22,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1033932985, now seen corresponding path program 1 times
[2024-12-02 07:15:22,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:15:22,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630823997]
[2024-12-02 07:15:22,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:15:22,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:15:22,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:15:22,111 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:15:22,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process
[2024-12-02 07:15:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:15:22,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 76 conjuncts are in the unsatisfiable core
[2024-12-02 07:15:22,353 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:15:22,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-12-02 07:15:23,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 07:15:23,441 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size
[2024-12-02 07:15:23,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13
[2024-12-02 07:15:23,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-12-02 07:15:23,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2024-12-02 07:15:24,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2024-12-02 07:15:24,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-12-02 07:15:24,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-12-02 07:15:25,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5
[2024-12-02 07:15:25,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8
[2024-12-02 07:15:26,255 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size
[2024-12-02 07:15:26,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 28
[2024-12-02 07:15:26,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8
[2024-12-02 07:15:26,339 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size
[2024-12-02 07:15:26,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17
[2024-12-02 07:15:26,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2024-12-02 07:15:27,636 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 07:15:27,636 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 07:15:27,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 12
[2024-12-02 07:15:28,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2024-12-02 07:15:28,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2024-12-02 07:15:28,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2024-12-02 07:15:29,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15
[2024-12-02 07:15:29,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11
[2024-12-02 07:15:30,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2024-12-02 07:15:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:15:30,737 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:15:33,325 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2667 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2665 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2668 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store (store |c_#memory_int#2| |c_ULTIMATE.start_dll_circular_append_~last~1#1.base| v_ArrVal_2665) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_2667)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (or (not (= (let ((.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (store (select .cse0 .cse1) .cse2 (select v_ArrVal_2668 .cse2))) v_ArrVal_2668)) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store .cse0 .cse1 v_ArrVal_2668) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))))) is different from false
[2024-12-02 07:15:33,367 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2667 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2665 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2668 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store (store |c_#memory_int#2| |c_ULTIMATE.start_dll_circular_append_#t~mem12#1.base| v_ArrVal_2665) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_2667)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (or (not (= (let ((.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (store (select .cse0 .cse1) .cse2 (select v_ArrVal_2668 .cse2))) v_ArrVal_2668)) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store .cse0 .cse1 v_ArrVal_2668) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))))) is different from false
[2024-12-02 07:15:33,413 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2667 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2665 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2668 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store (store |c_#memory_int#2| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_#t~mem11#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_dll_circular_append_#t~mem11#1.offset|)) v_ArrVal_2665) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_2667)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (or (not (= (let ((.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (store (select .cse0 .cse1) .cse2 (select v_ArrVal_2668 .cse2))) v_ArrVal_2668)) (= (select (select (store .cse0 .cse1 v_ArrVal_2668) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) |c_ULTIMATE.start_main_~data~0#1|)))) is different from false
[2024-12-02 07:15:34,450 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2667 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2665 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2668 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse0 (store (store |c_#memory_int#2| (select (select |c_#memory_$Pointer$#2.base| .cse1) .cse2) v_ArrVal_2665) |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base| v_ArrVal_2667))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store .cse0 .cse1 v_ArrVal_2668) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (not (= (store (select .cse0 .cse1) .cse2 (select v_ArrVal_2668 .cse2)) v_ArrVal_2668)))))) is different from false
[2024-12-02 07:15:34,776 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_45| (_ BitVec 32)) (v_ArrVal_2677 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2667 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2665 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2668 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse0 (store (store |c_#memory_int#2| (select (select (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_45| v_ArrVal_2677) .cse1) .cse2) v_ArrVal_2665) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_45| v_ArrVal_2667))) (or (= (select (select (store .cse0 .cse1 v_ArrVal_2668) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) |c_ULTIMATE.start_main_~data~0#1|) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_45|))) (not (= (store (select .cse0 .cse1) .cse2 (select v_ArrVal_2668 .cse2)) v_ArrVal_2668)))))) is different from false
[2024-12-02 07:15:34,786 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:15:34,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630823997]
[2024-12-02 07:15:34,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630823997] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:15:34,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2079846930]
[2024-12-02 07:15:34,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:15:34,786 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-12-02 07:15:34,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4
[2024-12-02 07:15:34,788 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-12-02 07:15:34,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process
[2024-12-02 07:15:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:15:35,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 87 conjuncts are in the unsatisfiable core
[2024-12-02 07:15:35,521 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:15:35,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-12-02 07:15:38,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 07:15:38,937 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size
[2024-12-02 07:15:38,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27
[2024-12-02 07:15:39,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-12-02 07:15:40,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2024-12-02 07:15:41,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2024-12-02 07:15:41,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-12-02 07:15:41,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 07:15:43,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11
[2024-12-02 07:15:43,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3
[2024-12-02 07:15:43,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3
[2024-12-02 07:15:45,666 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size
[2024-12-02 07:15:45,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26
[2024-12-02 07:15:45,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2024-12-02 07:15:45,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2024-12-02 07:15:47,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3
[2024-12-02 07:15:47,879 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 07:15:47,880 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 07:15:47,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7
[2024-12-02 07:15:49,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15
[2024-12-02 07:15:49,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2024-12-02 07:15:49,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2024-12-02 07:15:51,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15
[2024-12-02 07:15:51,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11
[2024-12-02 07:15:53,247 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:15:53,247 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:15:53,840 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2808 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2668 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_int#2| |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_2808)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (or (not (= v_ArrVal_2668 (let ((.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (store (select .cse0 .cse1) .cse2 (select v_ArrVal_2668 .cse2))))) (= (select (select (store .cse0 .cse1 v_ArrVal_2668) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) |c_ULTIMATE.start_main_~data~0#1|)))) is different from false
[2024-12-02 07:15:53,976 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2806 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2808 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2668 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store (store |c_#memory_int#2| |c_ULTIMATE.start_dll_circular_append_~last~1#1.base| v_ArrVal_2806) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_2808)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (or (not (= (store (select |c_#memory_int#2| |c_ULTIMATE.start_dll_circular_append_~last~1#1.base|) |c_ULTIMATE.start_dll_circular_append_~last~1#1.offset| (select v_ArrVal_2806 |c_ULTIMATE.start_dll_circular_append_~last~1#1.offset|)) v_ArrVal_2806)) (not (= (let ((.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (store (select .cse0 .cse1) .cse2 (select v_ArrVal_2668 .cse2))) v_ArrVal_2668)) (= (select (select (store .cse0 .cse1 v_ArrVal_2668) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) |c_ULTIMATE.start_main_~data~0#1|)))) is different from false
[2024-12-02 07:15:54,046 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2806 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2808 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2668 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store (store |c_#memory_int#2| |c_ULTIMATE.start_dll_circular_append_#t~mem12#1.base| v_ArrVal_2806) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_2808)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (or (not (= (let ((.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (store (select .cse0 .cse1) .cse2 (select v_ArrVal_2668 .cse2))) v_ArrVal_2668)) (not (= (store (select |c_#memory_int#2| |c_ULTIMATE.start_dll_circular_append_#t~mem12#1.base|) |c_ULTIMATE.start_dll_circular_append_#t~mem12#1.offset| (select v_ArrVal_2806 |c_ULTIMATE.start_dll_circular_append_#t~mem12#1.offset|)) v_ArrVal_2806)) (= (select (select (store .cse0 .cse1 v_ArrVal_2668) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) |c_ULTIMATE.start_main_~data~0#1|)))) is different from false
[2024-12-02 07:15:54,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 87
[2024-12-02 07:15:54,125 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2806 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2808 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_172 (_ BitVec 32)) (v_ArrVal_2668 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store (store |c_#memory_int#2| v_arrayElimCell_172 v_ArrVal_2806) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_2808)) (.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (or (not (= (let ((.cse0 (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_circular_append_#t~mem11#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_dll_circular_append_#t~mem11#1.offset|)))) (store (select |c_#memory_int#2| v_arrayElimCell_172) .cse0 (select v_ArrVal_2806 .cse0))) v_ArrVal_2806)) (not (= (let ((.cse3 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (store (select .cse1 .cse2) .cse3 (select v_ArrVal_2668 .cse3))) v_ArrVal_2668)) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store .cse1 .cse2 v_ArrVal_2668) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))))) is different from false
[2024-12-02 07:15:54,198 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2806 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2808 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_172 (_ BitVec 32)) (v_ArrVal_2668 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (.cse3 (store (store |c_#memory_int#2| v_arrayElimCell_172 v_ArrVal_2806) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_2808)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (or (not (= v_ArrVal_2806 (let ((.cse0 (select (select |c_#memory_$Pointer$#2.offset| .cse1) .cse2))) (store (select |c_#memory_int#2| v_arrayElimCell_172) .cse0 (select v_ArrVal_2806 .cse0))))) (not (= (store (select .cse3 .cse1) .cse2 (select v_ArrVal_2668 .cse2)) v_ArrVal_2668)) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store .cse3 .cse1 v_ArrVal_2668) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))))) is different from false
[2024-12-02 07:15:54,372 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2806 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2808 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_172 (_ BitVec 32)) (v_ArrVal_2668 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (.cse0 (store (store |c_#memory_int#2| v_arrayElimCell_172 v_ArrVal_2806) |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base| v_ArrVal_2808)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (or (not (= (store (select .cse0 .cse1) .cse2 (select v_ArrVal_2668 .cse2)) v_ArrVal_2668)) (not (= v_ArrVal_2806 (let ((.cse3 (select (select |c_#memory_$Pointer$#2.offset| .cse1) .cse2))) (store (select |c_#memory_int#2| v_arrayElimCell_172) .cse3 (select v_ArrVal_2806 .cse3))))) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store .cse0 .cse1 v_ArrVal_2668) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))))) is different from false
[2024-12-02 07:15:54,754 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2806 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2818 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_49| (_ BitVec 32)) (v_ArrVal_2808 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2819 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_172 (_ BitVec 32)) (v_ArrVal_2668 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store (store |c_#memory_int#2| v_arrayElimCell_172 v_ArrVal_2806) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_49| v_ArrVal_2808)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse3 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store .cse0 .cse1 v_ArrVal_2668) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_49|))) (not (= (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_49| v_ArrVal_2818) .cse1) .cse3))) (store (select (store |c_#memory_int#2| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_49| v_ArrVal_2819) v_arrayElimCell_172) .cse2 (select v_ArrVal_2806 .cse2))) v_ArrVal_2806)) (not (= (store (select .cse0 .cse1) .cse3 (select v_ArrVal_2668 .cse3)) v_ArrVal_2668))))) is different from false
[2024-12-02 07:15:54,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2079846930] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:15:54,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:15:54,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 67
[2024-12-02 07:15:54,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39633262]
[2024-12-02 07:15:54,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:15:54,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states
[2024-12-02 07:15:54,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:15:54,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants.
[2024-12-02 07:15:54,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=5030, Unknown=86, NotChecked=1860, Total=7310
[2024-12-02 07:15:54,766 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand has 67 states, 63 states have (on average 1.746031746031746) internal successors, (110), 58 states have internal predecessors, (110), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-12-02 07:16:14,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:16:14,482 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions.
[2024-12-02 07:16:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2024-12-02 07:16:14,483 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 63 states have (on average 1.746031746031746) internal successors, (110), 58 states have internal predecessors, (110), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 63
[2024-12-02 07:16:14,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:16:14,483 INFO L225 Difference]: With dead ends: 105
[2024-12-02 07:16:14,483 INFO L226 Difference]: Without dead ends: 105
[2024-12-02 07:16:14,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 2291 ImplicationChecksByTransitivity, 30.0s TimeCoverageRelationStatistics Valid=547, Invalid=8157, Unknown=86, NotChecked=2340, Total=11130
[2024-12-02 07:16:14,485 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 100 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time
[2024-12-02 07:16:14,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1967 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2185 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time]
[2024-12-02 07:16:14,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2024-12-02 07:16:14,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101.
[2024-12-02 07:16:14,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 77 states have (on average 1.2987012987012987) internal successors, (100), 95 states have internal predecessors, (100), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:16:14,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions.
[2024-12-02 07:16:14,488 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 63
[2024-12-02 07:16:14,488 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:16:14,488 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 106 transitions.
[2024-12-02 07:16:14,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 63 states have (on average 1.746031746031746) internal successors, (110), 58 states have internal predecessors, (110), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-12-02 07:16:14,489 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 106 transitions.
[2024-12-02 07:16:14,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2024-12-02 07:16:14,489 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:16:14,489 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:16:14,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0
[2024-12-02 07:16:14,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0
[2024-12-02 07:16:14,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt
[2024-12-02 07:16:14,890 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:16:14,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:16:14,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1986657125, now seen corresponding path program 1 times
[2024-12-02 07:16:14,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:16:14,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [860937823]
[2024-12-02 07:16:14,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:16:14,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:16:14,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:16:14,893 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:16:14,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process
[2024-12-02 07:16:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:16:15,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-12-02 07:16:15,154 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:16:15,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11
[2024-12-02 07:16:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2024-12-02 07:16:15,346 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 07:16:15,346 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:16:15,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860937823]
[2024-12-02 07:16:15,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860937823] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:16:15,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:16:15,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 07:16:15,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001506657]
[2024-12-02 07:16:15,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:16:15,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 07:16:15,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:16:15,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 07:16:15,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-12-02 07:16:15,347 INFO L87 Difference]: Start difference. First operand 101 states and 106 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-12-02 07:16:16,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:16:16,103 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions.
[2024-12-02 07:16:16,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-12-02 07:16:16,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 64
[2024-12-02 07:16:16,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:16:16,104 INFO L225 Difference]: With dead ends: 100
[2024-12-02 07:16:16,104 INFO L226 Difference]: Without dead ends: 100
[2024-12-02 07:16:16,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2024-12-02 07:16:16,104 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 22 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-12-02 07:16:16,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 325 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-12-02 07:16:16,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2024-12-02 07:16:16,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100.
[2024-12-02 07:16:16,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 94 states have internal predecessors, (99), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:16:16,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions.
[2024-12-02 07:16:16,108 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 64
[2024-12-02 07:16:16,108 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:16:16,108 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions.
[2024-12-02 07:16:16,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-12-02 07:16:16,109 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions.
[2024-12-02 07:16:16,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2024-12-02 07:16:16,109 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:16:16,109 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:16:16,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0
[2024-12-02 07:16:16,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:16:16,310 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:16:16,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:16:16,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1986657126, now seen corresponding path program 1 times
[2024-12-02 07:16:16,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:16:16,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405545741]
[2024-12-02 07:16:16,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:16:16,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:16:16,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:16:16,312 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:16:16,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process
[2024-12-02 07:16:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:16:16,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 19 conjuncts are in the unsatisfiable core
[2024-12-02 07:16:16,588 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:16:18,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-12-02 07:16:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-12-02 07:16:18,201 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:16:18,877 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 07:16:18,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 44
[2024-12-02 07:16:19,212 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size
[2024-12-02 07:16:19,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-12-02 07:16:19,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12
[2024-12-02 07:16:20,746 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2024-12-02 07:16:20,746 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:16:20,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405545741]
[2024-12-02 07:16:20,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405545741] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:16:20,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:16:20,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 23
[2024-12-02 07:16:20,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231689655]
[2024-12-02 07:16:20,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:16:20,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-12-02 07:16:20,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:16:20,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-12-02 07:16:20,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552
[2024-12-02 07:16:20,748 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand has 24 states, 23 states have (on average 4.260869565217392) internal successors, (98), 22 states have internal predecessors, (98), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5)
[2024-12-02 07:16:25,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 07:16:29,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 07:16:33,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 07:16:37,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 07:16:41,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 07:16:46,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-12-02 07:16:49,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:16:49,571 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions.
[2024-12-02 07:16:49,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2024-12-02 07:16:49,572 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.260869565217392) internal successors, (98), 22 states have internal predecessors, (98), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 64
[2024-12-02 07:16:49,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:16:49,572 INFO L225 Difference]: With dead ends: 99
[2024-12-02 07:16:49,572 INFO L226 Difference]: Without dead ends: 99
[2024-12-02 07:16:49,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812
[2024-12-02 07:16:49,573 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 72 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time
[2024-12-02 07:16:49,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 939 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 626 Invalid, 6 Unknown, 0 Unchecked, 28.2s Time]
[2024-12-02 07:16:49,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2024-12-02 07:16:49,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99.
[2024-12-02 07:16:49,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 77 states have (on average 1.2727272727272727) internal successors, (98), 93 states have internal predecessors, (98), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:16:49,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions.
[2024-12-02 07:16:49,575 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 64
[2024-12-02 07:16:49,575 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:16:49,575 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions.
[2024-12-02 07:16:49,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.260869565217392) internal successors, (98), 22 states have internal predecessors, (98), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5)
[2024-12-02 07:16:49,575 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions.
[2024-12-02 07:16:49,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2024-12-02 07:16:49,576 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:16:49,576 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:16:49,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0
[2024-12-02 07:16:49,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:16:49,776 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:16:49,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:16:49,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2082946863, now seen corresponding path program 1 times
[2024-12-02 07:16:49,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:16:49,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886009489]
[2024-12-02 07:16:49,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:16:49,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:16:49,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:16:49,778 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:16:49,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process
[2024-12-02 07:16:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:16:50,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 64 conjuncts are in the unsatisfiable core
[2024-12-02 07:16:50,034 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:16:50,846 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size
[2024-12-02 07:16:50,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13
[2024-12-02 07:16:51,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 07:16:51,525 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size
[2024-12-02 07:16:51,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31
[2024-12-02 07:16:52,046 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size
[2024-12-02 07:16:52,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17
[2024-12-02 07:16:52,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19
[2024-12-02 07:16:52,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 12
[2024-12-02 07:16:52,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5
[2024-12-02 07:16:53,743 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size
[2024-12-02 07:16:53,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 35
[2024-12-02 07:16:53,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12
[2024-12-02 07:16:53,860 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size
[2024-12-02 07:16:53,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17
[2024-12-02 07:16:56,039 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 07:16:56,093 INFO L349 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size
[2024-12-02 07:16:56,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 68
[2024-12-02 07:16:56,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 42
[2024-12-02 07:16:56,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 42
[2024-12-02 07:16:57,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 30
[2024-12-02 07:16:57,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31
[2024-12-02 07:16:58,456 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 07:16:58,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19
[2024-12-02 07:16:58,875 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:16:58,875 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:17:00,879 INFO L349 Elim1Store]: treesize reduction 7, result has 87.5 percent of original size
[2024-12-02 07:17:00,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 61
[2024-12-02 07:17:00,911 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3160 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3158 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_~last~1#1.base| v_ArrVal_3158) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3160)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) |c_ULTIMATE.start_dll_circular_append_~last~1#1.base|)) is different from false
[2024-12-02 07:17:00,950 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3160 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3158 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_#t~mem12#1.base| v_ArrVal_3158) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3160)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) |c_ULTIMATE.start_dll_circular_append_#t~mem12#1.base|)) is different from false
[2024-12-02 07:17:00,990 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3160 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3158 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_#t~mem11#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_dll_circular_append_#t~mem11#1.offset|)))) (= .cse0 (select (select (let ((.cse1 (store (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_3158) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3160)) (.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (store .cse1 .cse2 (store (select .cse1 .cse2) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) is different from false
[2024-12-02 07:17:02,496 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_57| (_ BitVec 32)) (v_ArrVal_3160 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3158 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_57|))) (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse3 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_57| v_ArrVal_3166) .cse2) .cse3))) (= .cse0 (select (select (let ((.cse1 (store (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_3158) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_57| v_ArrVal_3160))) (store .cse1 .cse2 (store (select .cse1 .cse2) .cse3 |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_57|))) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))))) is different from false
[2024-12-02 07:17:02,503 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:17:02,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886009489]
[2024-12-02 07:17:02,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886009489] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:17:02,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [944815530]
[2024-12-02 07:17:02,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:17:02,503 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-12-02 07:17:02,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4
[2024-12-02 07:17:02,504 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-12-02 07:17:02,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process
[2024-12-02 07:17:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:17:03,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 69 conjuncts are in the unsatisfiable core
[2024-12-02 07:17:03,317 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:17:03,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-12-02 07:17:04,323 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size
[2024-12-02 07:17:04,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27
[2024-12-02 07:17:05,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 07:17:05,766 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size
[2024-12-02 07:17:05,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 40
[2024-12-02 07:17:06,762 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size
[2024-12-02 07:17:06,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 26
[2024-12-02 07:17:06,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 26
[2024-12-02 07:17:08,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 19
[2024-12-02 07:17:08,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11
[2024-12-02 07:17:09,805 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:17:09,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 36
[2024-12-02 07:17:09,999 INFO L349 Elim1Store]: treesize reduction 84, result has 35.9 percent of original size
[2024-12-02 07:17:09,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 60
[2024-12-02 07:17:13,716 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 07:17:13,769 INFO L349 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size
[2024-12-02 07:17:13,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 68
[2024-12-02 07:17:13,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 42
[2024-12-02 07:17:14,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 42
[2024-12-02 07:17:15,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 42
[2024-12-02 07:17:15,830 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2024-12-02 07:17:15,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7
[2024-12-02 07:17:17,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31
[2024-12-02 07:17:18,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12
[2024-12-02 07:17:18,627 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:17:18,627 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:17:18,824 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3290 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3290)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (_ bv0 1))) is different from false
[2024-12-02 07:17:18,905 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3290 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3288 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_~last~1#1.base| v_ArrVal_3288) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3290)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))))) is different from false
[2024-12-02 07:17:18,943 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3290 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3288 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_#t~mem12#1.base| v_ArrVal_3288) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3290)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))))) is different from false
[2024-12-02 07:17:18,982 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3290 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3288 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_#t~mem11#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_dll_circular_append_#t~mem11#1.offset|)) v_ArrVal_3288) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3290)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))))) is different from false
[2024-12-02 07:17:19,020 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3290 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3288 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse0 (store (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| .cse1) .cse2) v_ArrVal_3288) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3290))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|)))) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))))) is different from false
[2024-12-02 07:17:19,104 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3290 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3288 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse0 (store (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| .cse1) .cse2) v_ArrVal_3288) |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base| v_ArrVal_3290))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base|)))) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))))) is different from false
[2024-12-02 07:17:19,366 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3290 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_61| (_ BitVec 32)) (v_ArrVal_3288 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3298 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3299 (_ BitVec 1))) (or (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_61| v_ArrVal_3299) (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse0 (store (store |c_#memory_$Pointer$#2.base| (select (select (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_61| v_ArrVal_3298) .cse1) .cse2) v_ArrVal_3288) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_61| v_ArrVal_3290))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_61|)))) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_61|))))) is different from false
[2024-12-02 07:17:19,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [944815530] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:17:19,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:17:19,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 59
[2024-12-02 07:17:19,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325162627]
[2024-12-02 07:17:19,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:17:19,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states
[2024-12-02 07:17:19,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:17:19,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants.
[2024-12-02 07:17:19,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=4214, Unknown=74, NotChecked=1562, Total=6162
[2024-12-02 07:17:19,375 INFO L87 Difference]: Start difference. First operand 99 states and 104 transitions. Second operand has 60 states, 56 states have (on average 2.0) internal successors, (112), 53 states have internal predecessors, (112), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5)
[2024-12-02 07:17:32,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 07:17:32,477 INFO L93 Difference]: Finished difference Result 115 states and 123 transitions.
[2024-12-02 07:17:32,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2024-12-02 07:17:32,477 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 56 states have (on average 2.0) internal successors, (112), 53 states have internal predecessors, (112), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 66
[2024-12-02 07:17:32,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 07:17:32,478 INFO L225 Difference]: With dead ends: 115
[2024-12-02 07:17:32,478 INFO L226 Difference]: Without dead ends: 115
[2024-12-02 07:17:32,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=385, Invalid=5285, Unknown=74, NotChecked=1738, Total=7482
[2024-12-02 07:17:32,480 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 113 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 2035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time
[2024-12-02 07:17:32,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1175 Invalid, 2035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2027 Invalid, 3 Unknown, 0 Unchecked, 11.1s Time]
[2024-12-02 07:17:32,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2024-12-02 07:17:32,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105.
[2024-12-02 07:17:32,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 83 states have (on average 1.2891566265060241) internal successors, (107), 99 states have internal predecessors, (107), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-12-02 07:17:32,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions.
[2024-12-02 07:17:32,482 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 66
[2024-12-02 07:17:32,482 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 07:17:32,482 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions.
[2024-12-02 07:17:32,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 56 states have (on average 2.0) internal successors, (112), 53 states have internal predecessors, (112), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5)
[2024-12-02 07:17:32,482 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions.
[2024-12-02 07:17:32,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2024-12-02 07:17:32,483 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 07:17:32,483 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:17:32,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0
[2024-12-02 07:17:32,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0
[2024-12-02 07:17:32,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:17:32,883 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] ===
[2024-12-02 07:17:32,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:17:32,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2082946862, now seen corresponding path program 1 times
[2024-12-02 07:17:32,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 07:17:32,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26397651]
[2024-12-02 07:17:32,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:17:32,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:17:32,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:17:32,886 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:17:32,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process
[2024-12-02 07:17:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:17:33,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 104 conjuncts are in the unsatisfiable core
[2024-12-02 07:17:33,149 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:17:33,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:17:34,436 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size
[2024-12-02 07:17:34,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27
[2024-12-02 07:17:34,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9
[2024-12-02 07:17:34,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 07:17:35,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 07:17:35,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2024-12-02 07:17:35,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2024-12-02 07:17:35,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2024-12-02 07:17:36,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2024-12-02 07:17:36,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-12-02 07:17:36,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 31
[2024-12-02 07:17:37,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 24
[2024-12-02 07:17:37,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11
[2024-12-02 07:17:37,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3
[2024-12-02 07:17:37,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-12-02 07:17:38,341 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:17:38,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 43
[2024-12-02 07:17:38,423 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size
[2024-12-02 07:17:38,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 29
[2024-12-02 07:17:38,576 INFO L349 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size
[2024-12-02 07:17:38,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34
[2024-12-02 07:17:38,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2024-12-02 07:17:41,502 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 07:17:41,553 INFO L349 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size
[2024-12-02 07:17:41,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 90
[2024-12-02 07:17:41,575 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:17:41,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 15
[2024-12-02 07:17:41,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 40
[2024-12-02 07:17:42,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2024-12-02 07:17:42,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2024-12-02 07:17:42,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 40
[2024-12-02 07:17:43,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26
[2024-12-02 07:17:43,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 40
[2024-12-02 07:17:46,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 62
[2024-12-02 07:17:46,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 24
[2024-12-02 07:17:46,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2024-12-02 07:17:47,078 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:17:47,078 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:17:52,772 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse2 (bvadd (_ bv4 32) .cse3)) (.cse5 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse6 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (.cse7 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (and (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (let ((.cse4 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse4 .cse5 (store (select .cse4 .cse5) .cse6 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse7))) (let ((.cse0 (select .cse1 .cse3))) (or (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))) (= .cse0 (select .cse1 .cse2)))))) (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3434 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse10 (select (let ((.cse11 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse11 .cse5 (store (select .cse11 .cse5) .cse6 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse7))) (let ((.cse8 (select .cse10 .cse3))) (or (bvule (bvadd .cse8 (_ bv12 32)) (select |c_#length| (select (select (let ((.cse9 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3434))) (store .cse9 .cse5 (store (select .cse9 .cse5) .cse6 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) .cse7) .cse3))) (= .cse8 (select .cse10 .cse2)))))) (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3434 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse14 (select (let ((.cse15 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3434))) (store .cse15 .cse5 (store (select .cse15 .cse5) .cse6 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) .cse7))) (let ((.cse13 (select .cse14 .cse3))) (or (bvule (bvadd (select (select (let ((.cse12 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse12 .cse5 (store (select .cse12 .cse5) .cse6 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse7) .cse3) (_ bv12 32)) (select |c_#length| .cse13)) (= (select .cse14 .cse2) .cse13))))) (or (forall ((v_ArrVal_3434 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse16 (select (let ((.cse17 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3434))) (store .cse17 .cse5 (store (select .cse17 .cse5) .cse6 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) .cse7))) (= (select .cse16 .cse2) (select .cse16 .cse3)))) (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse18 (select (select (let ((.cse19 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse19 .cse5 (store (select .cse19 .cse5) .cse6 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse7) .cse3))) (bvule (bvadd .cse18 (_ bv8 32)) (bvadd .cse18 (_ bv12 32))))))))) is different from false
[2024-12-02 07:17:54,079 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse7 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse2 (bvadd (_ bv4 32) .cse7)) (.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse5 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (.cse6 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (and (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3431 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (let ((.cse8 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_circular_append_~last~1#1.base| v_ArrVal_3430) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse8 .cse4 (store (select .cse8 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse6))) (let ((.cse0 (select .cse1 .cse7))) (or (= .cse0 (select .cse1 .cse2)) (bvule (bvadd (_ bv12 32) .cse0) (select |c_#length| (select (select (let ((.cse3 (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_~last~1#1.base| v_ArrVal_3431) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3434))) (store .cse3 .cse4 (store (select .cse3 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) .cse6) .cse7))))))) (or (forall ((v_ArrVal_3434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (select (let ((.cse10 (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_~last~1#1.base| v_ArrVal_3431) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3434))) (store .cse10 .cse4 (store (select .cse10 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) .cse6))) (= (select .cse9 .cse2) (select .cse9 .cse7)))) (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (select (select (let ((.cse12 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_circular_append_~last~1#1.base| v_ArrVal_3430) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse12 .cse4 (store (select .cse12 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse6) .cse7))) (bvule (bvadd (_ bv8 32) .cse11) (bvadd (_ bv12 32) .cse11))))) (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse14 (select (let ((.cse15 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_circular_append_~last~1#1.base| v_ArrVal_3430) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse15 .cse4 (store (select .cse15 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse6))) (let ((.cse13 (select .cse14 .cse7))) (or (bvule (bvadd (_ bv8 32) .cse13) (bvadd (_ bv12 32) .cse13)) (= .cse13 (select .cse14 .cse2)))))) (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3431 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse16 (select (let ((.cse19 (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_~last~1#1.base| v_ArrVal_3431) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3434))) (store .cse19 .cse4 (store (select .cse19 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) .cse6))) (let ((.cse17 (select .cse16 .cse7))) (or (= (select .cse16 .cse2) .cse17) (bvule (bvadd (_ bv12 32) (select (select (let ((.cse18 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_circular_append_~last~1#1.base| v_ArrVal_3430) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse18 .cse4 (store (select .cse18 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse6) .cse7)) (select |c_#length| .cse17))))))))) is different from false
[2024-12-02 07:17:54,872 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse7 (bvadd (_ bv4 32) .cse5)) (.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse3 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (and (or (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse1 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_circular_append_#t~mem12#1.base| v_ArrVal_3430) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse1 .cse2 (store (select .cse1 .cse2) .cse3 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse4) .cse5))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_3434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (let ((.cse8 (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_#t~mem12#1.base| v_ArrVal_3431) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3434))) (store .cse8 .cse2 (store (select .cse8 .cse2) .cse3 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) .cse4))) (= (select .cse6 .cse7) (select .cse6 .cse5))))) (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3431 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (select (let ((.cse12 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_circular_append_#t~mem12#1.base| v_ArrVal_3430) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse12 .cse2 (store (select .cse12 .cse2) .cse3 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse4))) (let ((.cse9 (select .cse11 .cse5))) (or (bvule (bvadd .cse9 (_ bv12 32)) (select |c_#length| (select (select (let ((.cse10 (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_#t~mem12#1.base| v_ArrVal_3431) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3434))) (store .cse10 .cse2 (store (select .cse10 .cse2) .cse3 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) .cse4) .cse5))) (= .cse9 (select .cse11 .cse7)))))) (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3431 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse15 (select (let ((.cse16 (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_#t~mem12#1.base| v_ArrVal_3431) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3434))) (store .cse16 .cse2 (store (select .cse16 .cse2) .cse3 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) .cse4))) (let ((.cse14 (select .cse15 .cse5))) (or (bvule (bvadd (select (select (let ((.cse13 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_circular_append_#t~mem12#1.base| v_ArrVal_3430) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse13 .cse2 (store (select .cse13 .cse2) .cse3 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse4) .cse5) (_ bv12 32)) (select |c_#length| .cse14)) (= (select .cse15 .cse7) .cse14))))) (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse18 (select (let ((.cse19 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_circular_append_#t~mem12#1.base| v_ArrVal_3430) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse19 .cse2 (store (select .cse19 .cse2) .cse3 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse4))) (let ((.cse17 (select .cse18 .cse5))) (or (= .cse17 (select .cse18 .cse7)) (bvule (bvadd .cse17 (_ bv8 32)) (bvadd .cse17 (_ bv12 32)))))))))) is different from false
[2024-12-02 07:17:55,452 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse8 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse2 (bvadd (_ bv4 32) .cse8)) (.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse5 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (.cse6 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_#t~mem11#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_dll_circular_append_#t~mem11#1.offset|))) (.cse7 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (and (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3431 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (let ((.cse9 (store (store |c_#memory_$Pointer$#2.base| .cse6 v_ArrVal_3431) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3434))) (store .cse9 .cse4 (store (select .cse9 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) .cse7))) (let ((.cse0 (select .cse1 .cse8))) (or (= .cse0 (select .cse1 .cse2)) (bvule (bvadd (select (select (let ((.cse3 (store (store |c_#memory_$Pointer$#2.offset| .cse6 v_ArrVal_3430) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse3 .cse4 (store (select .cse3 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse7) .cse8) (_ bv12 32)) (select |c_#length| .cse0)))))) (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (select (let ((.cse12 (store (store |c_#memory_$Pointer$#2.offset| .cse6 v_ArrVal_3430) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse12 .cse4 (store (select .cse12 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse7))) (let ((.cse10 (select .cse11 .cse8))) (or (= .cse10 (select .cse11 .cse2)) (bvule (bvadd .cse10 (_ bv8 32)) (bvadd .cse10 (_ bv12 32))))))) (or (forall ((v_ArrVal_3434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse13 (select (let ((.cse14 (store (store |c_#memory_$Pointer$#2.base| .cse6 v_ArrVal_3431) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3434))) (store .cse14 .cse4 (store (select .cse14 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) .cse7))) (= (select .cse13 .cse8) (select .cse13 .cse2)))) (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse15 (select (select (let ((.cse16 (store (store |c_#memory_$Pointer$#2.offset| .cse6 v_ArrVal_3430) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse16 .cse4 (store (select .cse16 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse7) .cse8))) (bvule (bvadd .cse15 (_ bv8 32)) (bvadd .cse15 (_ bv12 32)))))) (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3431 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse18 (select (let ((.cse20 (store (store |c_#memory_$Pointer$#2.offset| .cse6 v_ArrVal_3430) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse20 .cse4 (store (select .cse20 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse7))) (let ((.cse17 (select .cse18 .cse8))) (or (= .cse17 (select .cse18 .cse2)) (bvule (bvadd .cse17 (_ bv12 32)) (select |c_#length| (select (select (let ((.cse19 (store (store |c_#memory_$Pointer$#2.base| .cse6 v_ArrVal_3431) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3434))) (store .cse19 .cse4 (store (select .cse19 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) .cse7) .cse8)))))))))) is different from false
[2024-12-02 07:17:56,405 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse5 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (.cse8 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse2 (bvadd (_ bv4 32) .cse8)) (.cse6 (select (select |c_#memory_$Pointer$#2.base| .cse4) .cse5)) (.cse7 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (and (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3431 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (let ((.cse9 (store (store |c_#memory_$Pointer$#2.base| .cse6 v_ArrVal_3431) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3434))) (store .cse9 .cse4 (store (select .cse9 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) .cse7))) (let ((.cse0 (select .cse1 .cse8))) (or (= .cse0 (select .cse1 .cse2)) (bvule (bvadd (_ bv12 32) (select (select (let ((.cse3 (store (store |c_#memory_$Pointer$#2.offset| .cse6 v_ArrVal_3430) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse3 .cse4 (store (select .cse3 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse7) .cse8)) (select |c_#length| .cse0)))))) (or (forall ((v_ArrVal_3434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse10 (select (let ((.cse11 (store (store |c_#memory_$Pointer$#2.base| .cse6 v_ArrVal_3431) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3434))) (store .cse11 .cse4 (store (select .cse11 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) .cse7))) (= (select .cse10 .cse8) (select .cse10 .cse2)))) (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse12 (select (select (let ((.cse13 (store (store |c_#memory_$Pointer$#2.offset| .cse6 v_ArrVal_3430) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse13 .cse4 (store (select .cse13 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse7) .cse8))) (bvule (bvadd (_ bv8 32) .cse12) (bvadd (_ bv12 32) .cse12))))) (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse14 (select (let ((.cse16 (store (store |c_#memory_$Pointer$#2.offset| .cse6 v_ArrVal_3430) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse16 .cse4 (store (select .cse16 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse7))) (let ((.cse15 (select .cse14 .cse8))) (or (= (select .cse14 .cse2) .cse15) (bvule (bvadd (_ bv8 32) .cse15) (bvadd (_ bv12 32) .cse15)))))) (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3431 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse17 (select (let ((.cse20 (store (store |c_#memory_$Pointer$#2.offset| .cse6 v_ArrVal_3430) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3435))) (store .cse20 .cse4 (store (select .cse20 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse7))) (let ((.cse18 (select .cse17 .cse8))) (or (= (select .cse17 .cse2) .cse18) (bvule (bvadd (_ bv12 32) .cse18) (select |c_#length| (select (select (let ((.cse19 (store (store |c_#memory_$Pointer$#2.base| .cse6 v_ArrVal_3431) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3434))) (store .cse19 .cse4 (store (select .cse19 .cse4) .cse5 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) .cse7) .cse8)))))))))) is different from false
[2024-12-02 07:18:12,873 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse8 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse1 (bvadd (_ bv4 32) .cse8)) (.cse7 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse5 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (and (forall ((|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65| (_ BitVec 32))) (or (forall ((v_ArrVal_3449 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3450 (_ BitVec 32)) (v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3431 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65| v_ArrVal_3449) .cse4) .cse5))) (let ((.cse0 (select (let ((.cse9 (store (store |c_#memory_$Pointer$#2.offset| .cse6 v_ArrVal_3430) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65| v_ArrVal_3435))) (store .cse9 .cse4 (store (select .cse9 .cse4) .cse5 (_ bv0 32)))) .cse7))) (let ((.cse2 (select .cse0 .cse8))) (or (= (select .cse0 .cse1) .cse2) (bvule (bvadd (_ bv12 32) .cse2) (select (store |c_#length| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65| v_ArrVal_3450) (select (select (let ((.cse3 (store (store |c_#memory_$Pointer$#2.base| .cse6 v_ArrVal_3431) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65| v_ArrVal_3434))) (store .cse3 .cse4 (store (select .cse3 .cse4) .cse5 |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65|))) .cse7) .cse8)))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65|))))) (forall ((|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65|))) (forall ((v_ArrVal_3449 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse12 (store (store |c_#memory_$Pointer$#2.offset| (select (select (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65| v_ArrVal_3449) .cse4) .cse5) v_ArrVal_3430) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65| v_ArrVal_3435))) (let ((.cse11 (select (store .cse12 .cse4 (store (select .cse12 .cse4) .cse5 (_ bv0 32))) .cse7))) (or (let ((.cse10 (select .cse11 .cse8))) (bvule (bvadd (_ bv8 32) .cse10) (bvadd (_ bv12 32) .cse10))) (= (select .cse11 .cse1) (select (select .cse12 .cse7) .cse8)))))))) (forall ((|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65| (_ BitVec 32))) (or (forall ((v_ArrVal_3449 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3450 (_ BitVec 32)) (v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3431 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse14 (select (select (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65| v_ArrVal_3449) .cse4) .cse5))) (let ((.cse16 (select (let ((.cse17 (store (store |c_#memory_$Pointer$#2.base| .cse14 v_ArrVal_3431) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65| v_ArrVal_3434))) (store .cse17 .cse4 (store (select .cse17 .cse4) .cse5 |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65|))) .cse7))) (let ((.cse15 (select .cse16 .cse8))) (or (bvule (bvadd (_ bv12 32) (select (select (let ((.cse13 (store (store |c_#memory_$Pointer$#2.offset| .cse14 v_ArrVal_3430) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65| v_ArrVal_3435))) (store .cse13 .cse4 (store (select .cse13 .cse4) .cse5 (_ bv0 32)))) .cse7) .cse8)) (select (store |c_#length| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65| v_ArrVal_3450) .cse15)) (= (select .cse16 .cse1) .cse15)))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65|))))) (forall ((|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65| (_ BitVec 32))) (or (forall ((v_ArrVal_3449 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse20 (select (select (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65| v_ArrVal_3449) .cse4) .cse5))) (or (forall ((v_ArrVal_3435 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3430 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse18 (select (select (let ((.cse19 (store (store |c_#memory_$Pointer$#2.offset| .cse20 v_ArrVal_3430) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65| v_ArrVal_3435))) (store .cse19 .cse4 (store (select .cse19 .cse4) .cse5 (_ bv0 32)))) .cse7) .cse8))) (bvule (bvadd (_ bv8 32) .cse18) (bvadd (_ bv12 32) .cse18)))) (forall ((v_ArrVal_3434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse21 (select (let ((.cse22 (store (store |c_#memory_$Pointer$#2.base| .cse20 v_ArrVal_3431) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65| v_ArrVal_3434))) (store .cse22 .cse4 (store (select .cse22 .cse4) .cse5 |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65|))) .cse7))) (= (select .cse21 .cse1) (select .cse21 .cse8))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_65|)))))))) is different from false
[2024-12-02 07:18:13,301 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 07:18:13,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26397651]
[2024-12-02 07:18:13,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26397651] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:18:13,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2123606435]
[2024-12-02 07:18:13,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:18:13,301 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-12-02 07:18:13,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4
[2024-12-02 07:18:13,303 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-12-02 07:18:13,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc853013-f645-40d4-875c-7304059ebae7/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process
[2024-12-02 07:18:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:18:14,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 98 conjuncts are in the unsatisfiable core
[2024-12-02 07:18:14,169 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:18:14,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-12-02 07:18:14,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7
[2024-12-02 07:18:14,906 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size
[2024-12-02 07:18:14,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13
[2024-12-02 07:18:15,023 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size
[2024-12-02 07:18:15,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27
[2024-12-02 07:18:15,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 07:18:15,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-12-02 07:18:15,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2024-12-02 07:18:15,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2024-12-02 07:18:15,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2024-12-02 07:18:15,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2024-12-02 07:18:15,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 31
[2024-12-02 07:18:15,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2024-12-02 07:18:16,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 24
[2024-12-02 07:18:16,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11
[2024-12-02 07:18:16,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2024-12-02 07:18:16,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3
[2024-12-02 07:18:18,365 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size
[2024-12-02 07:18:18,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23
[2024-12-02 07:18:18,419 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:18:18,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 43
[2024-12-02 07:18:18,530 INFO L349 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size
[2024-12-02 07:18:18,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34
[2024-12-02 07:18:18,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17
[2024-12-02 07:18:22,428 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-12-02 07:18:22,480 INFO L349 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size
[2024-12-02 07:18:22,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 90
[2024-12-02 07:18:22,517 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-12-02 07:18:22,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 15
[2024-12-02 07:18:22,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 40
[2024-12-02 07:18:22,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2024-12-02 07:18:22,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 40
[2024-12-02 07:18:22,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15
[2024-12-02 07:18:24,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15
[2024-12-02 07:18:24,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 40
[2024-12-02 07:18:25,603 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2024-12-02 07:18:25,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7
[2024-12-02 07:18:27,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3
[2024-12-02 07:18:27,740 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-12-02 07:18:27,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 29
[2024-12-02 07:18:29,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4
[2024-12-02 07:18:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:18:29,265 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:18:36,440 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse3 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (and (forall ((v_ArrVal_3586 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3586))) (store .cse1 .cse2 (store (select .cse1 .cse2) .cse3 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse4) .cse5))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_3587 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3586 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32))) (bvule (bvadd (_ bv12 32) (select (select (let ((.cse6 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3586))) (store .cse6 .cse2 (store (select .cse6 .cse2) .cse3 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse4) .cse5)) (select |c_#length| (select (select (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3587))) (store .cse7 .cse2 (store (select .cse7 .cse2) .cse3 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) .cse4) .cse5)))))) is different from false
[2024-12-02 07:18:36,681 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (.cse3 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (and (forall ((v_ArrVal_3587 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3586 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3582 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32))) (bvule (bvadd (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_circular_append_~last~1#1.base| v_ArrVal_3582) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3586))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse3) .cse4) (_ bv12 32)) (select |c_#length| (select (select (let ((.cse5 (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_~last~1#1.base| v_ArrVal_3583) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3587))) (store .cse5 .cse1 (store (select .cse5 .cse1) .cse2 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) .cse3) .cse4)))) (forall ((v_ArrVal_3586 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3582 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32))) (let ((.cse6 (select (select (let ((.cse7 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_circular_append_~last~1#1.base| v_ArrVal_3582) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3586))) (store .cse7 .cse1 (store (select .cse7 .cse1) .cse2 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse3) .cse4))) (bvule (bvadd .cse6 (_ bv8 32)) (bvadd .cse6 (_ bv12 32))))))) is different from false
[2024-12-02 07:18:40,173 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (.cse3 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_#t~mem11#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_dll_circular_append_#t~mem11#1.offset|))) (.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (and (forall ((v_ArrVal_3587 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3586 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3582 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32))) (bvule (bvadd (_ bv12 32) (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$#2.offset| .cse3 v_ArrVal_3582) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3586))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse4) .cse5)) (select |c_#length| (select (select (let ((.cse6 (store (store |c_#memory_$Pointer$#2.base| .cse3 v_ArrVal_3583) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3587))) (store .cse6 .cse1 (store (select .cse6 .cse1) .cse2 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) .cse4) .cse5)))) (forall ((v_ArrVal_3586 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3582 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32))) (let ((.cse7 (select (select (let ((.cse8 (store (store |c_#memory_$Pointer$#2.offset| .cse3 v_ArrVal_3582) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3586))) (store .cse8 .cse1 (store (select .cse8 .cse1) .cse2 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse4) .cse5))) (bvule (bvadd (_ bv8 32) .cse7) (bvadd (_ bv12 32) .cse7)))))) is different from false
[2024-12-02 07:18:40,274 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| .cse1) .cse2)) (.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (and (forall ((v_ArrVal_3587 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3586 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3582 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32))) (bvule (bvadd (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$#2.offset| .cse3 v_ArrVal_3582) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3586))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse4) .cse5) (_ bv12 32)) (select |c_#length| (select (select (let ((.cse6 (store (store |c_#memory_$Pointer$#2.base| .cse3 v_ArrVal_3583) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3587))) (store .cse6 .cse1 (store (select .cse6 .cse1) .cse2 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) .cse4) .cse5)))) (forall ((v_ArrVal_3586 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3582 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32))) (let ((.cse7 (select (select (let ((.cse8 (store (store |c_#memory_$Pointer$#2.offset| .cse3 v_ArrVal_3582) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_3586))) (store .cse8 .cse1 (store (select .cse8 .cse1) .cse2 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse4) .cse5))) (bvule (bvadd .cse7 (_ bv8 32)) (bvadd .cse7 (_ bv12 32)))))))) is different from false
[2024-12-02 07:18:48,229 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_69| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_69|))) (forall ((v_ArrVal_3600 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3587 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3586 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3602 (_ BitVec 32)) (v_ArrVal_3583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3582 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_69| v_ArrVal_3600) .cse1) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$#2.offset| .cse3 v_ArrVal_3582) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_69| v_ArrVal_3586))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse4) .cse5)) (select (store |c_#length| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_69| v_ArrVal_3602) (select (select (let ((.cse6 (store (store |c_#memory_$Pointer$#2.base| .cse3 v_ArrVal_3583) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_69| v_ArrVal_3587))) (store .cse6 .cse1 (store (select .cse6 .cse1) .cse2 |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_69|))) .cse4) .cse5))))))) (forall ((|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_69| (_ BitVec 32))) (or (forall ((v_ArrVal_3600 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3586 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3582 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32))) (let ((.cse7 (select (select (let ((.cse8 (store (store |c_#memory_$Pointer$#2.offset| (select (select (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_69| v_ArrVal_3600) .cse1) .cse2) v_ArrVal_3582) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_69| v_ArrVal_3586))) (store .cse8 .cse1 (store (select .cse8 .cse1) .cse2 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse4) .cse5))) (bvule (bvadd (_ bv8 32) .cse7) (bvadd (_ bv12 32) .cse7)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_69|))))))) is different from false
[2024-12-02 07:18:48,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2123606435] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:18:48,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-12-02 07:18:48,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 33] total 50
[2024-12-02 07:18:48,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777822145]
[2024-12-02 07:18:48,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:18:48,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states
[2024-12-02 07:18:48,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 07:18:48,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants.
[2024-12-02 07:18:48,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=4400, Unknown=125, NotChecked=1606, Total=6480
[2024-12-02 07:18:48,257 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand has 51 states, 48 states have (on average 1.9583333333333333) internal successors, (94), 45 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4)