./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 826ab2ba
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7887c90df48e0e32a16c0ae4217eb11a41b3b1af1e02493e847dc25239198c19
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-826ab2b
[2024-11-13 13:16:44,754 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-13 13:16:44,813 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-13 13:16:44,818 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-13 13:16:44,818 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-13 13:16:44,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-13 13:16:44,841 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-13 13:16:44,841 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-13 13:16:44,842 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-13 13:16:44,842 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-13 13:16:44,842 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-13 13:16:44,842 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-13 13:16:44,842 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-13 13:16:44,842 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-13 13:16:44,842 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-13 13:16:44,842 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-13 13:16:44,843 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-13 13:16:44,843 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-13 13:16:44,843 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-13 13:16:44,843 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-13 13:16:44,843 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-13 13:16:44,843 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-13 13:16:44,843 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-13 13:16:44,843 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-13 13:16:44,843 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-13 13:16:44,843 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-13 13:16:44,844 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-13 13:16:44,844 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-13 13:16:44,844 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-13 13:16:44,844 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-13 13:16:44,844 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-13 13:16:44,844 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-13 13:16:44,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-13 13:16:44,844 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-13 13:16:44,844 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-13 13:16:44,844 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-13 13:16:44,845 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-13 13:16:44,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-13 13:16:44,845 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-13 13:16:44,845 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-13 13:16:44,845 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-13 13:16:44,845 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-13 13:16:44,845 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_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7887c90df48e0e32a16c0ae4217eb11a41b3b1af1e02493e847dc25239198c19
[2024-11-13 13:16:45,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-13 13:16:45,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-13 13:16:45,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-13 13:16:45,194 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-13 13:16:45,195 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-13 13:16:45,196 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i
Unable to find full path for "g++"
[2024-11-13 13:16:47,133 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-13 13:16:47,416 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-13 13:16:47,416 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i
[2024-11-13 13:16:47,427 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/data/6f90a9661/ed86b74db8ac4420995c79c1f96244f4/FLAG750dc9946
[2024-11-13 13:16:47,696 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/data/6f90a9661/ed86b74db8ac4420995c79c1f96244f4
[2024-11-13 13:16:47,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-13 13:16:47,703 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-13 13:16:47,705 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-13 13:16:47,705 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-13 13:16:47,710 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-13 13:16:47,711 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:16:47" (1/1) ...
[2024-11-13 13:16:47,712 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@463c3262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:16:47, skipping insertion in model container
[2024-11-13 13:16:47,712 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:16:47" (1/1) ...
[2024-11-13 13:16:47,757 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-13 13:16:48,068 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i[24046,24059]
[2024-11-13 13:16:48,072 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-13 13:16:48,082 INFO L200 MainTranslator]: Completed pre-run
[2024-11-13 13:16:48,134 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i[24046,24059]
[2024-11-13 13:16:48,134 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-13 13:16:48,167 INFO L204 MainTranslator]: Completed translation
[2024-11-13 13:16:48,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:16:48 WrapperNode
[2024-11-13 13:16:48,169 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-13 13:16:48,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-13 13:16:48,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-13 13:16:48,170 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-13 13:16:48,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:16:48" (1/1) ...
[2024-11-13 13:16:48,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:16:48" (1/1) ...
[2024-11-13 13:16:48,210 INFO L138 Inliner]: procedures = 123, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 109
[2024-11-13 13:16:48,212 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-13 13:16:48,212 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-13 13:16:48,212 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-13 13:16:48,212 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-13 13:16:48,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:16:48" (1/1) ...
[2024-11-13 13:16:48,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:16:48" (1/1) ...
[2024-11-13 13:16:48,227 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:16:48" (1/1) ...
[2024-11-13 13:16:48,240 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6].
[2024-11-13 13:16:48,241 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:16:48" (1/1) ...
[2024-11-13 13:16:48,241 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:16:48" (1/1) ...
[2024-11-13 13:16:48,248 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:16:48" (1/1) ...
[2024-11-13 13:16:48,252 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:16:48" (1/1) ...
[2024-11-13 13:16:48,253 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:16:48" (1/1) ...
[2024-11-13 13:16:48,254 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:16:48" (1/1) ...
[2024-11-13 13:16:48,257 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-13 13:16:48,258 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-13 13:16:48,258 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-13 13:16:48,258 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-13 13:16:48,259 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:16:48" (1/1) ...
[2024-11-13 13:16:48,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-13 13:16:48,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3
[2024-11-13 13:16:48,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-13 13:16:48,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-13 13:16:48,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-13 13:16:48,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-11-13 13:16:48,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-13 13:16:48,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-11-13 13:16:48,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2024-11-13 13:16:48,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-13 13:16:48,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0
[2024-11-13 13:16:48,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1
[2024-11-13 13:16:48,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0
[2024-11-13 13:16:48,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1
[2024-11-13 13:16:48,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-13 13:16:48,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-13 13:16:48,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-13 13:16:48,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-13 13:16:48,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-13 13:16:48,480 INFO L238 CfgBuilder]: Building ICFG
[2024-11-13 13:16:48,482 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-13 13:16:48,675 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live.
[2024-11-13 13:16:48,675 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-13 13:16:48,685 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-13 13:16:48,685 INFO L316 CfgBuilder]: Removed 3 assume(true) statements.
[2024-11-13 13:16:48,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:16:48 BoogieIcfgContainer
[2024-11-13 13:16:48,686 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-13 13:16:48,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-13 13:16:48,689 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-13 13:16:48,694 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-13 13:16:48,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:16:47" (1/3) ...
[2024-11-13 13:16:48,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e13f97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:16:48, skipping insertion in model container
[2024-11-13 13:16:48,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:16:48" (2/3) ...
[2024-11-13 13:16:48,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e13f97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:16:48, skipping insertion in model container
[2024-11-13 13:16:48,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:16:48" (3/3) ...
[2024-11-13 13:16:48,697 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i
[2024-11-13 13:16:48,713 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-13 13:16:48,715 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG dll_nullified-1.i that has 1 procedures, 27 locations, 1 initial locations, 3 loop locations, and 1 error locations.
[2024-11-13 13:16:48,773 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-13 13:16:48,792 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@787f159b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-13 13:16:48,792 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-13 13:16:48,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.6) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-13 13:16:48,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2024-11-13 13:16:48,805 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-13 13:16:48,805 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-13 13:16:48,807 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 13:16:48,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 13:16:48,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1664287546, now seen corresponding path program 1 times
[2024-11-13 13:16:48,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 13:16:48,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060203102]
[2024-11-13 13:16:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 13:16:48,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 13:16:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 13:16:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-13 13:16:49,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 13:16:49,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060203102]
[2024-11-13 13:16:49,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060203102] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-13 13:16:49,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-13 13:16:49,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-13 13:16:49,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968632966]
[2024-11-13 13:16:49,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-13 13:16:49,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-13 13:16:49,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 13:16:49,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-13 13:16:49,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 13:16:49,093 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.6) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-13 13:16:49,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 13:16:49,166 INFO L93 Difference]: Finished difference Result 52 states and 78 transitions.
[2024-11-13 13:16:49,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-13 13:16:49,169 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12
[2024-11-13 13:16:49,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 13:16:49,176 INFO L225 Difference]: With dead ends: 52
[2024-11-13 13:16:49,197 INFO L226 Difference]: Without dead ends: 27
[2024-11-13 13:16:49,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 13:16:49,204 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 7 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-13 13:16:49,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 63 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-13 13:16:49,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2024-11-13 13:16:49,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23.
[2024-11-13 13:16:49,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-13 13:16:49,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions.
[2024-11-13 13:16:49,240 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 12
[2024-11-13 13:16:49,240 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-13 13:16:49,240 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions.
[2024-11-13 13:16:49,240 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-13 13:16:49,240 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions.
[2024-11-13 13:16:49,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-11-13 13:16:49,241 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-13 13:16:49,241 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-13 13:16:49,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-13 13:16:49,242 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 13:16:49,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 13:16:49,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1648137776, now seen corresponding path program 1 times
[2024-11-13 13:16:49,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 13:16:49,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761022745]
[2024-11-13 13:16:49,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 13:16:49,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 13:16:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 13:16:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-13 13:16:49,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 13:16:49,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761022745]
[2024-11-13 13:16:49,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761022745] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-13 13:16:49,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-13 13:16:49,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-13 13:16:49,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707324689]
[2024-11-13 13:16:49,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-13 13:16:49,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-13 13:16:49,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 13:16:49,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-13 13:16:49,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 13:16:49,463 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-13 13:16:49,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 13:16:49,560 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions.
[2024-11-13 13:16:49,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-13 13:16:49,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17
[2024-11-13 13:16:49,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 13:16:49,562 INFO L225 Difference]: With dead ends: 46
[2024-11-13 13:16:49,563 INFO L226 Difference]: Without dead ends: 26
[2024-11-13 13:16:49,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 13:16:49,564 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-13 13:16:49,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-13 13:16:49,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2024-11-13 13:16:49,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26.
[2024-11-13 13:16:49,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-13 13:16:49,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions.
[2024-11-13 13:16:49,575 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 17
[2024-11-13 13:16:49,576 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-13 13:16:49,576 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions.
[2024-11-13 13:16:49,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-13 13:16:49,576 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions.
[2024-11-13 13:16:49,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-11-13 13:16:49,577 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-13 13:16:49,577 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-13 13:16:49,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-13 13:16:49,578 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 13:16:49,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 13:16:49,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1389972338, now seen corresponding path program 1 times
[2024-11-13 13:16:49,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 13:16:49,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273449821]
[2024-11-13 13:16:49,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 13:16:49,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 13:16:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 13:16:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-13 13:16:49,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 13:16:49,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273449821]
[2024-11-13 13:16:49,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273449821] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-13 13:16:49,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051429923]
[2024-11-13 13:16:49,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 13:16:49,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-13 13:16:49,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3
[2024-11-13 13:16:49,845 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-13 13:16:49,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-13 13:16:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 13:16:49,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-13 13:16:49,996 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-13 13:16:50,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-13 13:16:50,048 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-13 13:16:50,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-13 13:16:50,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051429923] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-13 13:16:50,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-13 13:16:50,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2024-11-13 13:16:50,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116464401]
[2024-11-13 13:16:50,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-13 13:16:50,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-13 13:16:50,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 13:16:50,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-13 13:16:50,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-11-13 13:16:50,099 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-13 13:16:50,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 13:16:50,285 INFO L93 Difference]: Finished difference Result 53 states and 72 transitions.
[2024-11-13 13:16:50,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-13 13:16:50,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17
[2024-11-13 13:16:50,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 13:16:50,287 INFO L225 Difference]: With dead ends: 53
[2024-11-13 13:16:50,287 INFO L226 Difference]: Without dead ends: 38
[2024-11-13 13:16:50,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-11-13 13:16:50,290 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 13 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-13 13:16:50,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 81 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-13 13:16:50,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2024-11-13 13:16:50,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38.
[2024-11-13 13:16:50,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-13 13:16:50,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions.
[2024-11-13 13:16:50,301 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 17
[2024-11-13 13:16:50,302 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-13 13:16:50,302 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions.
[2024-11-13 13:16:50,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-13 13:16:50,302 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions.
[2024-11-13 13:16:50,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2024-11-13 13:16:50,304 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-13 13:16:50,304 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-13 13:16:50,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-13 13:16:50,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-13 13:16:50,509 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 13:16:50,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 13:16:50,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1618049736, now seen corresponding path program 1 times
[2024-11-13 13:16:50,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 13:16:50,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805852334]
[2024-11-13 13:16:50,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 13:16:50,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 13:16:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 13:16:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-13 13:16:51,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 13:16:51,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805852334]
[2024-11-13 13:16:51,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805852334] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-13 13:16:51,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991598165]
[2024-11-13 13:16:51,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 13:16:51,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-13 13:16:51,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3
[2024-11-13 13:16:51,083 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-13 13:16:51,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-13 13:16:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 13:16:51,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-13 13:16:51,332 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-13 13:16:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-13 13:16:51,405 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-13 13:16:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-13 13:16:51,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991598165] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-13 13:16:51,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-13 13:16:51,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7
[2024-11-13 13:16:51,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472549693]
[2024-11-13 13:16:51,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-13 13:16:51,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-13 13:16:51,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 13:16:51,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-13 13:16:51,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-11-13 13:16:51,523 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-13 13:16:51,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 13:16:51,697 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions.
[2024-11-13 13:16:51,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-13 13:16:51,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32
[2024-11-13 13:16:51,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 13:16:51,698 INFO L225 Difference]: With dead ends: 58
[2024-11-13 13:16:51,698 INFO L226 Difference]: Without dead ends: 43
[2024-11-13 13:16:51,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-11-13 13:16:51,699 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-13 13:16:51,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 123 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-13 13:16:51,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2024-11-13 13:16:51,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43.
[2024-11-13 13:16:51,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 42 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-13 13:16:51,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions.
[2024-11-13 13:16:51,704 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 32
[2024-11-13 13:16:51,705 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-13 13:16:51,705 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions.
[2024-11-13 13:16:51,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-13 13:16:51,705 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions.
[2024-11-13 13:16:51,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-11-13 13:16:51,706 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-13 13:16:51,706 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-13 13:16:51,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-13 13:16:51,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-13 13:16:51,906 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 13:16:51,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 13:16:51,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2035852018, now seen corresponding path program 2 times
[2024-11-13 13:16:51,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 13:16:51,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921811935]
[2024-11-13 13:16:51,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 13:16:51,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 13:16:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 13:16:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 32 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2024-11-13 13:16:52,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 13:16:52,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921811935]
[2024-11-13 13:16:52,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921811935] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-13 13:16:52,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165956776]
[2024-11-13 13:16:52,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-13 13:16:52,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-13 13:16:52,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3
[2024-11-13 13:16:52,932 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-13 13:16:52,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-13 13:16:53,190 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-13 13:16:53,190 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-13 13:16:53,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 34 conjuncts are in the unsatisfiable core
[2024-11-13 13:16:53,198 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-13 13:16:53,230 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
[2024-11-13 13:16:53,274 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-13 13:16:53,275 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
[2024-11-13 13:16:53,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15
[2024-11-13 13:16:53,412 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 16
[2024-11-13 13:16:53,598 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 32 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2024-11-13 13:16:53,598 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-13 13:16:53,644 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_664 (Array Int Int))) (= (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_664) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) 0)) is different from false
[2024-11-13 13:16:53,690 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 61 treesize of output 59
[2024-11-13 13:16:53,703 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
[2024-11-13 13:16:53,762 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked.
[2024-11-13 13:16:53,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165956776] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-13 13:16:53,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-13 13:16:53,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20
[2024-11-13 13:16:53,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011366091]
[2024-11-13 13:16:53,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-13 13:16:53,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2024-11-13 13:16:53,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 13:16:53,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2024-11-13 13:16:53,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=294, Unknown=1, NotChecked=34, Total=380
[2024-11-13 13:16:53,765 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-13 13:16:54,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 13:16:54,763 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions.
[2024-11-13 13:16:54,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2024-11-13 13:16:54,763 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37
[2024-11-13 13:16:54,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 13:16:54,764 INFO L225 Difference]: With dead ends: 69
[2024-11-13 13:16:54,764 INFO L226 Difference]: Without dead ends: 56
[2024-11-13 13:16:54,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=618, Unknown=1, NotChecked=52, Total=812
[2024-11-13 13:16:54,766 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 38 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-11-13 13:16:54,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 208 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 353 Invalid, 0 Unknown, 42 Unchecked, 0.7s Time]
[2024-11-13 13:16:54,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2024-11-13 13:16:54,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 46.
[2024-11-13 13:16:54,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 45 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-13 13:16:54,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions.
[2024-11-13 13:16:54,778 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 37
[2024-11-13 13:16:54,779 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-13 13:16:54,779 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions.
[2024-11-13 13:16:54,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-13 13:16:54,780 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions.
[2024-11-13 13:16:54,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-11-13 13:16:54,781 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-13 13:16:54,781 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-13 13:16:54,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-13 13:16:54,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-13 13:16:54,986 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 13:16:54,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 13:16:54,986 INFO L85 PathProgramCache]: Analyzing trace with hash -2034004976, now seen corresponding path program 1 times
[2024-11-13 13:16:54,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 13:16:54,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777350926]
[2024-11-13 13:16:54,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 13:16:54,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 13:16:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 13:16:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2024-11-13 13:16:56,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 13:16:56,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777350926]
[2024-11-13 13:16:56,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777350926] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-13 13:16:56,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074600127]
[2024-11-13 13:16:56,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 13:16:56,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-13 13:16:56,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3
[2024-11-13 13:16:56,322 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-13 13:16:56,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-13 13:16:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 13:16:56,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 29 conjuncts are in the unsatisfiable core
[2024-11-13 13:16:56,610 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-13 13:16:56,615 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
[2024-11-13 13:16:56,635 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-13 13:16:56,636 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
[2024-11-13 13:16:56,670 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 74 treesize of output 69
[2024-11-13 13:16:56,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 104
[2024-11-13 13:16:56,737 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-13 13:16:56,738 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-13 13:16:56,739 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-13 13:16:56,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 122
[2024-11-13 13:16:56,775 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-13 13:16:56,776 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-13 13:16:56,777 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-13 13:16:56,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 26
[2024-11-13 13:16:56,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-13 13:16:56,830 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 3 case distinctions, treesize of input 36 treesize of output 35
[2024-11-13 13:16:56,929 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 62 treesize of output 47
[2024-11-13 13:16:57,290 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-13 13:16:57,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 79 treesize of output 35
[2024-11-13 13:16:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 32 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2024-11-13 13:16:57,302 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-13 13:16:57,462 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_988 (Array Int Int))) (= (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_988) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) 0)) is different from false
[2024-11-13 13:16:57,488 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-13 13:16:57,488 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 2 case distinctions, treesize of input 77 treesize of output 72
[2024-11-13 13:16:57,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-13 13:16:57,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 54 treesize of output 115
[2024-11-13 13:16:57,553 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 37
[2024-11-13 13:16:57,568 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 7
[2024-11-13 13:16:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked.
[2024-11-13 13:16:57,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074600127] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-13 13:16:57,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-13 13:16:57,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 26
[2024-11-13 13:16:57,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324847201]
[2024-11-13 13:16:57,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-13 13:16:57,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2024-11-13 13:16:57,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 13:16:57,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2024-11-13 13:16:57,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=533, Unknown=1, NotChecked=46, Total=650
[2024-11-13 13:16:57,696 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 26 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-13 13:16:58,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 13:16:58,494 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions.
[2024-11-13 13:16:58,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-11-13 13:16:58,495 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 26 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37
[2024-11-13 13:16:58,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 13:16:58,496 INFO L225 Difference]: With dead ends: 69
[2024-11-13 13:16:58,496 INFO L226 Difference]: Without dead ends: 56
[2024-11-13 13:16:58,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=150, Invalid=975, Unknown=1, NotChecked=64, Total=1190
[2024-11-13 13:16:58,498 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 40 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-13 13:16:58,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 198 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 273 Invalid, 0 Unknown, 36 Unchecked, 0.4s Time]
[2024-11-13 13:16:58,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2024-11-13 13:16:58,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48.
[2024-11-13 13:16:58,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 47 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-13 13:16:58,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions.
[2024-11-13 13:16:58,504 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 37
[2024-11-13 13:16:58,505 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-13 13:16:58,505 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions.
[2024-11-13 13:16:58,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 26 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-13 13:16:58,505 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions.
[2024-11-13 13:16:58,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-11-13 13:16:58,506 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-13 13:16:58,506 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-13 13:16:58,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-11-13 13:16:58,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2024-11-13 13:16:58,710 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 13:16:58,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 13:16:58,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2034003054, now seen corresponding path program 1 times
[2024-11-13 13:16:58,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 13:16:58,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580068968]
[2024-11-13 13:16:58,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 13:16:58,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 13:16:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-13 13:16:58,828 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-13 13:16:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-13 13:16:58,919 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-11-13 13:16:58,922 INFO L325 BasicCegarLoop]: Counterexample is feasible
[2024-11-13 13:16:58,923 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-11-13 13:16:58,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-11-13 13:16:58,929 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1]
[2024-11-13 13:16:58,968 INFO L173 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-13 13:16:58,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:16:58 BoogieIcfgContainer
[2024-11-13 13:16:58,975 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-13 13:16:58,976 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-13 13:16:58,976 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-13 13:16:58,976 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-13 13:16:58,977 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:16:48" (3/4) ...
[2024-11-13 13:16:58,979 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample
[2024-11-13 13:16:59,038 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml
[2024-11-13 13:16:59,038 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-13 13:16:59,039 INFO L158 Benchmark]: Toolchain (without parser) took 11336.62ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 91.0MB in the beginning and 113.2MB in the end (delta: -22.2MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB.
[2024-11-13 13:16:59,040 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 83.9MB. Free memory was 42.2MB in the beginning and 42.0MB in the end (delta: 196.3kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-13 13:16:59,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 464.03ms. Allocated memory is still 117.4MB. Free memory was 90.5MB in the beginning and 73.0MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-11-13 13:16:59,040 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.70ms. Allocated memory is still 117.4MB. Free memory was 73.0MB in the beginning and 71.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-13 13:16:59,041 INFO L158 Benchmark]: Boogie Preprocessor took 45.16ms. Allocated memory is still 117.4MB. Free memory was 71.6MB in the beginning and 69.6MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-13 13:16:59,042 INFO L158 Benchmark]: RCFGBuilder took 427.96ms. Allocated memory is still 117.4MB. Free memory was 69.6MB in the beginning and 55.5MB in the end (delta: 14.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-13 13:16:59,042 INFO L158 Benchmark]: TraceAbstraction took 10286.66ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 55.0MB in the beginning and 117.1MB in the end (delta: -62.1MB). Peak memory consumption was 166.5kB. Max. memory is 16.1GB.
[2024-11-13 13:16:59,042 INFO L158 Benchmark]: Witness Printer took 62.84ms. Allocated memory is still 176.2MB. Free memory was 117.1MB in the beginning and 113.2MB in the end (delta: 3.9MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-13 13:16:59,044 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.36ms. Allocated memory is still 83.9MB. Free memory was 42.2MB in the beginning and 42.0MB in the end (delta: 196.3kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 464.03ms. Allocated memory is still 117.4MB. Free memory was 90.5MB in the beginning and 73.0MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 41.70ms. Allocated memory is still 117.4MB. Free memory was 73.0MB in the beginning and 71.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 45.16ms. Allocated memory is still 117.4MB. Free memory was 71.6MB in the beginning and 69.6MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* RCFGBuilder took 427.96ms. Allocated memory is still 117.4MB. Free memory was 69.6MB in the beginning and 55.5MB in the end (delta: 14.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 10286.66ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 55.0MB in the beginning and 117.1MB in the end (delta: -62.1MB). Peak memory consumption was 166.5kB. Max. memory is 16.1GB.
* Witness Printer took 62.84ms. Allocated memory is still 176.2MB. Free memory was 117.1MB in the beginning and 113.2MB in the end (delta: 3.9MB). There was no memory consumed. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- CounterExampleResult [Line: 616]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L599] const int len = 5;
[L600] CALL, EXPR dll_create(len)
[L579] DLL head = ((void *)0);
VAL [head={0:0}, len=5]
[L580] COND TRUE len > 0
[L581] DLL new_head = (DLL) malloc(sizeof(struct node));
[L582] COND FALSE !(((void *)0) == new_head)
VAL [head={0:0}, len=5, new_head={-1:0}]
[L585] new_head->data_0 = 0
[L586] new_head->data_1 = 0
[L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0
[L588] new_head->next = head
[L589] new_head->prev = ((void *)0)
[L590] COND FALSE !(\read(head))
[L593] head = new_head
[L594] len--
[L580] COND TRUE len > 0
[L581] DLL new_head = (DLL) malloc(sizeof(struct node));
[L582] COND FALSE !(((void *)0) == new_head)
VAL [head={-1:0}, len=4, new_head={-2:0}]
[L585] new_head->data_0 = 0
[L586] new_head->data_1 = 0
[L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0
[L588] new_head->next = head
[L589] new_head->prev = ((void *)0)
[L590] COND TRUE \read(head)
[L591] head->prev = new_head
[L593] head = new_head
[L594] len--
[L580] COND TRUE len > 0
[L581] DLL new_head = (DLL) malloc(sizeof(struct node));
[L582] COND FALSE !(((void *)0) == new_head)
VAL [head={-2:0}, len=3, new_head={-3:0}]
[L585] new_head->data_0 = 0
[L586] new_head->data_1 = 0
[L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0
[L588] new_head->next = head
[L589] new_head->prev = ((void *)0)
[L590] COND TRUE \read(head)
[L591] head->prev = new_head
[L593] head = new_head
[L594] len--
[L580] COND TRUE len > 0
[L581] DLL new_head = (DLL) malloc(sizeof(struct node));
[L582] COND FALSE !(((void *)0) == new_head)
VAL [head={-3:0}, len=2, new_head={-4:0}]
[L585] new_head->data_0 = 0
[L586] new_head->data_1 = 0
[L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0
[L588] new_head->next = head
[L589] new_head->prev = ((void *)0)
[L590] COND TRUE \read(head)
[L591] head->prev = new_head
[L593] head = new_head
[L594] len--
[L580] COND TRUE len > 0
[L581] DLL new_head = (DLL) malloc(sizeof(struct node));
[L582] COND FALSE !(((void *)0) == new_head)
VAL [head={-4:0}, len=1, new_head={-5:0}]
[L585] new_head->data_0 = 0
[L586] new_head->data_1 = 0
[L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0
[L588] new_head->next = head
[L589] new_head->prev = ((void *)0)
[L590] COND TRUE \read(head)
[L591] head->prev = new_head
[L593] head = new_head
[L594] len--
[L580] COND FALSE !(len > 0)
VAL [head={-5:0}]
[L596] return head;
VAL [\result={-5:0}]
[L600] RET, EXPR dll_create(len)
[L600] DLL head = dll_create(len);
[L601] head->next
[L601] COND TRUE head->next
[L602] EXPR head->data_0
[L602] EXPR 0 != head->data_0 || 0 != head->data_1
VAL [head={-5:0}]
[L602] EXPR 0 != head->data_0 || 0 != head->data_1
[L602] EXPR head->data_1
[L602] EXPR 0 != head->data_0 || 0 != head->data_1
VAL [head={-5:0}]
[L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2
VAL [head={-5:0}]
[L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2
[L602] EXPR head->data_2
[L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2
VAL [head={-5:0}]
[L602] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2
[L616] reach_error()
VAL [head={-5:0}]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.2s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 107 mSDsluCounter, 724 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 78 IncrementalHoareTripleChecker+Unchecked, 577 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 686 IncrementalHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 147 mSDtfsCounter, 686 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 300 GetRequests, 223 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=6, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 312 NumberOfCodeBlocks, 312 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 384 ConstructedInterpolants, 2 QuantifiedInterpolants, 1560 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1438 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 289/436 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2024-11-13 13:16:59,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9946297-01c9-4e67-b556-d326319b965f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE