./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version 9bd2c7ff
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d3ed36aa6701f38e4437e494734e2c4cd3d174950cdc9cef44311577dda2ee95
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 08:06:13,233 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 08:06:13,370 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2023-11-19 08:06:13,385 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 08:06:13,385 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 08:06:13,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 08:06:13,435 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 08:06:13,436 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 08:06:13,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 08:06:13,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 08:06:13,444 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 08:06:13,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 08:06:13,445 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 08:06:13,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 08:06:13,448 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-19 08:06:13,448 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 08:06:13,449 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-19 08:06:13,449 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 08:06:13,450 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2023-11-19 08:06:13,450 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2023-11-19 08:06:13,451 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2023-11-19 08:06:13,452 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 08:06:13,452 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2023-11-19 08:06:13,453 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2023-11-19 08:06:13,453 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-19 08:06:13,454 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 08:06:13,455 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 08:06:13,455 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 08:06:13,456 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 08:06:13,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 08:06:13,458 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 08:06:13,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 08:06:13,458 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-11-19 08:06:13,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 08:06:13,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 08:06:13,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 08:06:13,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 08:06:13,460 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 08:06:13,460 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3ed36aa6701f38e4437e494734e2c4cd3d174950cdc9cef44311577dda2ee95
[2023-11-19 08:06:13,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 08:06:13,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 08:06:13,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 08:06:13,914 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 08:06:13,915 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 08:06:13,917 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c
[2023-11-19 08:06:17,041 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 08:06:17,310 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 08:06:17,310 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c
[2023-11-19 08:06:17,320 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/data/c9425817f/99a026d8a8144bb2b854437c50aff368/FLAG0568b69a8
[2023-11-19 08:06:17,342 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/data/c9425817f/99a026d8a8144bb2b854437c50aff368
[2023-11-19 08:06:17,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 08:06:17,353 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 08:06:17,359 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 08:06:17,359 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 08:06:17,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 08:06:17,368 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:17" (1/1) ...
[2023-11-19 08:06:17,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fe1a062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:17, skipping insertion in model container
[2023-11-19 08:06:17,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:17" (1/1) ...
[2023-11-19 08:06:17,396 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 08:06:17,616 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 08:06:17,627 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 08:06:17,665 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 08:06:17,682 INFO L206 MainTranslator]: Completed translation
[2023-11-19 08:06:17,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:17 WrapperNode
[2023-11-19 08:06:17,683 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 08:06:17,684 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 08:06:17,684 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 08:06:17,684 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 08:06:17,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:17" (1/1) ...
[2023-11-19 08:06:17,710 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:17" (1/1) ...
[2023-11-19 08:06:17,739 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 60
[2023-11-19 08:06:17,740 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 08:06:17,741 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 08:06:17,741 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 08:06:17,741 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 08:06:17,752 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:17" (1/1) ...
[2023-11-19 08:06:17,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:17" (1/1) ...
[2023-11-19 08:06:17,758 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:17" (1/1) ...
[2023-11-19 08:06:17,758 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:17" (1/1) ...
[2023-11-19 08:06:17,774 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:17" (1/1) ...
[2023-11-19 08:06:17,778 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:17" (1/1) ...
[2023-11-19 08:06:17,779 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:17" (1/1) ...
[2023-11-19 08:06:17,780 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:17" (1/1) ...
[2023-11-19 08:06:17,782 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 08:06:17,783 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 08:06:17,783 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 08:06:17,783 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 08:06:17,789 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:17" (1/1) ...
[2023-11-19 08:06:17,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 08:06:17,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:06:17,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 08:06:17,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 08:06:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 08:06:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 08:06:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 08:06:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-11-19 08:06:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 08:06:17,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 08:06:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-11-19 08:06:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 08:06:17,957 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 08:06:17,960 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 08:06:18,183 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 08:06:18,192 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 08:06:18,192 INFO L302 CfgBuilder]: Removed 2 assume(true) statements.
[2023-11-19 08:06:18,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:18 BoogieIcfgContainer
[2023-11-19 08:06:18,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 08:06:18,201 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 08:06:18,201 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 08:06:18,205 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 08:06:18,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:06:17" (1/3) ...
[2023-11-19 08:06:18,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1312e17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:18, skipping insertion in model container
[2023-11-19 08:06:18,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:17" (2/3) ...
[2023-11-19 08:06:18,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1312e17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:18, skipping insertion in model container
[2023-11-19 08:06:18,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:18" (3/3) ...
[2023-11-19 08:06:18,211 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_sendmail_tTflag_arr_one_loop.c
[2023-11-19 08:06:18,247 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 08:06:18,247 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations.
[2023-11-19 08:06:18,309 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 08:06:18,317 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@10bba2b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 08:06:18,318 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations.
[2023-11-19 08:06:18,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 31 states have internal predecessors, (36), 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)
[2023-11-19 08:06:18,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2023-11-19 08:06:18,332 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:06:18,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2023-11-19 08:06:18,334 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-19 08:06:18,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:06:18,342 INFO L85 PathProgramCache]: Analyzing trace with hash 926022, now seen corresponding path program 1 times
[2023-11-19 08:06:18,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:06:18,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920615437]
[2023-11-19 08:06:18,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:06:18,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:06:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:06:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:06:18,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:06:18,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920615437]
[2023-11-19 08:06:18,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920615437] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:06:18,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:06:18,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 08:06:18,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692641188]
[2023-11-19 08:06:18,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:06:18,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-19 08:06:18,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:06:18,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-19 08:06:18,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 08:06:18,702 INFO L87 Difference]: Start difference. First operand has 32 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 31 states have internal predecessors, (36), 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 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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)
[2023-11-19 08:06:18,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:06:18,723 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions.
[2023-11-19 08:06:18,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2023-11-19 08:06:18,726 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4
[2023-11-19 08:06:18,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:06:18,738 INFO L225 Difference]: With dead ends: 31
[2023-11-19 08:06:18,738 INFO L226 Difference]: Without dead ends: 29
[2023-11-19 08:06:18,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 08:06:18,747 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 08:06:18,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 08:06:18,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2023-11-19 08:06:18,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2023-11-19 08:06:18,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 28 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)
[2023-11-19 08:06:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions.
[2023-11-19 08:06:18,795 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 4
[2023-11-19 08:06:18,796 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:06:18,796 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions.
[2023-11-19 08:06:18,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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)
[2023-11-19 08:06:18,797 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions.
[2023-11-19 08:06:18,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2023-11-19 08:06:18,798 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:06:18,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2023-11-19 08:06:18,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 08:06:18,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-19 08:06:18,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:06:18,804 INFO L85 PathProgramCache]: Analyzing trace with hash 925712, now seen corresponding path program 1 times
[2023-11-19 08:06:18,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:06:18,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126146613]
[2023-11-19 08:06:18,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:06:18,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:06:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:06:19,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:06:19,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:06:19,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126146613]
[2023-11-19 08:06:19,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126146613] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:06:19,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:06:19,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 08:06:19,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16973863]
[2023-11-19 08:06:19,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:06:19,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 08:06:19,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:06:19,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 08:06:19,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 08:06:19,031 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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)
[2023-11-19 08:06:19,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:06:19,117 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions.
[2023-11-19 08:06:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 08:06:19,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4
[2023-11-19 08:06:19,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:06:19,119 INFO L225 Difference]: With dead ends: 25
[2023-11-19 08:06:19,119 INFO L226 Difference]: Without dead ends: 25
[2023-11-19 08:06:19,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 08:06:19,121 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-19 08:06:19,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 16 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-19 08:06:19,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2023-11-19 08:06:19,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2023-11-19 08:06:19,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 24 states have internal predecessors, (26), 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)
[2023-11-19 08:06:19,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions.
[2023-11-19 08:06:19,128 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 4
[2023-11-19 08:06:19,128 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:06:19,129 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions.
[2023-11-19 08:06:19,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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)
[2023-11-19 08:06:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions.
[2023-11-19 08:06:19,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2023-11-19 08:06:19,130 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:06:19,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2023-11-19 08:06:19,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-19 08:06:19,131 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-19 08:06:19,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:06:19,132 INFO L85 PathProgramCache]: Analyzing trace with hash 925713, now seen corresponding path program 1 times
[2023-11-19 08:06:19,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:06:19,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311666597]
[2023-11-19 08:06:19,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:06:19,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:06:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:06:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:06:19,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:06:19,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311666597]
[2023-11-19 08:06:19,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311666597] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:06:19,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:06:19,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 08:06:19,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919635280]
[2023-11-19 08:06:19,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:06:19,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 08:06:19,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:06:19,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 08:06:19,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 08:06:19,293 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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)
[2023-11-19 08:06:19,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:06:19,341 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions.
[2023-11-19 08:06:19,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 08:06:19,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4
[2023-11-19 08:06:19,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:06:19,345 INFO L225 Difference]: With dead ends: 39
[2023-11-19 08:06:19,345 INFO L226 Difference]: Without dead ends: 39
[2023-11-19 08:06:19,346 INFO L412 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
[2023-11-19 08:06:19,347 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 15 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 08:06:19,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 36 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 08:06:19,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2023-11-19 08:06:19,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26.
[2023-11-19 08:06:19,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 25 states have internal predecessors, (27), 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)
[2023-11-19 08:06:19,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions.
[2023-11-19 08:06:19,354 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 4
[2023-11-19 08:06:19,354 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:06:19,354 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions.
[2023-11-19 08:06:19,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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)
[2023-11-19 08:06:19,355 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions.
[2023-11-19 08:06:19,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2023-11-19 08:06:19,355 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:06:19,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2023-11-19 08:06:19,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-19 08:06:19,369 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-19 08:06:19,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:06:19,378 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times
[2023-11-19 08:06:19,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:06:19,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551254939]
[2023-11-19 08:06:19,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:06:19,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:06:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:06:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:06:19,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:06:19,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551254939]
[2023-11-19 08:06:19,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551254939] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:06:19,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:06:19,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 08:06:19,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517596719]
[2023-11-19 08:06:19,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:06:19,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 08:06:19,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:06:19,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 08:06:19,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 08:06:19,626 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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)
[2023-11-19 08:06:19,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:06:19,706 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions.
[2023-11-19 08:06:19,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 08:06:19,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4
[2023-11-19 08:06:19,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:06:19,709 INFO L225 Difference]: With dead ends: 31
[2023-11-19 08:06:19,709 INFO L226 Difference]: Without dead ends: 31
[2023-11-19 08:06:19,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-19 08:06:19,715 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 39 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 08:06:19,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 22 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 08:06:19,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2023-11-19 08:06:19,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24.
[2023-11-19 08:06:19,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.25) internal successors, (25), 23 states have internal predecessors, (25), 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)
[2023-11-19 08:06:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions.
[2023-11-19 08:06:19,733 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 4
[2023-11-19 08:06:19,733 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:06:19,734 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions.
[2023-11-19 08:06:19,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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)
[2023-11-19 08:06:19,734 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions.
[2023-11-19 08:06:19,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-11-19 08:06:19,736 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:06:19,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:06:19,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-19 08:06:19,737 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-19 08:06:19,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:06:19,737 INFO L85 PathProgramCache]: Analyzing trace with hash 719789813, now seen corresponding path program 1 times
[2023-11-19 08:06:19,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:06:19,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040308895]
[2023-11-19 08:06:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:06:19,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:06:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:06:19,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 08:06:19,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:06:19,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040308895]
[2023-11-19 08:06:19,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040308895] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:06:19,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:06:19,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 08:06:19,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327894463]
[2023-11-19 08:06:19,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:06:19,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 08:06:19,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:06:19,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 08:06:19,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-19 08:06:19,902 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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)
[2023-11-19 08:06:19,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:06:19,951 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions.
[2023-11-19 08:06:19,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 08:06:19,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 10
[2023-11-19 08:06:19,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:06:19,955 INFO L225 Difference]: With dead ends: 30
[2023-11-19 08:06:19,955 INFO L226 Difference]: Without dead ends: 30
[2023-11-19 08:06:19,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-19 08:06:19,960 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 08:06:19,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 27 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 08:06:19,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2023-11-19 08:06:19,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 23.
[2023-11-19 08:06:19,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 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)
[2023-11-19 08:06:19,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions.
[2023-11-19 08:06:19,965 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 10
[2023-11-19 08:06:19,965 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:06:19,966 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions.
[2023-11-19 08:06:19,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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)
[2023-11-19 08:06:19,966 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions.
[2023-11-19 08:06:19,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2023-11-19 08:06:19,967 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:06:19,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:06:19,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-19 08:06:19,967 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-19 08:06:19,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:06:19,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1513422325, now seen corresponding path program 1 times
[2023-11-19 08:06:19,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:06:19,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622850345]
[2023-11-19 08:06:19,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:06:19,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:06:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:06:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:06:20,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:06:20,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622850345]
[2023-11-19 08:06:20,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622850345] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 08:06:20,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542194164]
[2023-11-19 08:06:20,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:06:20,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:06:20,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:06:20,172 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 08:06:20,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-19 08:06:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:06:20,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-19 08:06:20,265 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 08:06:20,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 08:06:20,376 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 08:06:20,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542194164] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:06:20,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-19 08:06:20,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8
[2023-11-19 08:06:20,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943285608]
[2023-11-19 08:06:20,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:06:20,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-19 08:06:20,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:06:20,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-19 08:06:20,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2023-11-19 08:06:20,380 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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)
[2023-11-19 08:06:20,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:06:20,426 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions.
[2023-11-19 08:06:20,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-11-19 08:06:20,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 13
[2023-11-19 08:06:20,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:06:20,428 INFO L225 Difference]: With dead ends: 39
[2023-11-19 08:06:20,428 INFO L226 Difference]: Without dead ends: 39
[2023-11-19 08:06:20,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2023-11-19 08:06:20,429 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 38 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 08:06:20,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 48 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 08:06:20,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2023-11-19 08:06:20,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 25.
[2023-11-19 08:06:20,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 states have internal predecessors, (27), 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)
[2023-11-19 08:06:20,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions.
[2023-11-19 08:06:20,434 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 13
[2023-11-19 08:06:20,435 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:06:20,435 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions.
[2023-11-19 08:06:20,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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)
[2023-11-19 08:06:20,436 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions.
[2023-11-19 08:06:20,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2023-11-19 08:06:20,436 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:06:20,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:06:20,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-19 08:06:20,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:06:20,652 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-19 08:06:20,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:06:20,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2094421337, now seen corresponding path program 1 times
[2023-11-19 08:06:20,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:06:20,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316877569]
[2023-11-19 08:06:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:06:20,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:06:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:06:20,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:06:20,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:06:20,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316877569]
[2023-11-19 08:06:20,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316877569] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 08:06:20,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777554945]
[2023-11-19 08:06:20,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:06:20,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:06:20,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:06:20,770 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 08:06:20,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-19 08:06:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:06:20,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-19 08:06:20,838 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 08:06:20,963 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#in~0#1.base_19| Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#in~0#1.base_19|) 0) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#in~0#1.base_19| 0)))) is different from true
[2023-11-19 08:06:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 08:06:20,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 08:06:20,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777554945] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:06:20,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-19 08:06:20,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6
[2023-11-19 08:06:20,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876371475]
[2023-11-19 08:06:20,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:06:20,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 08:06:20,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:06:20,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 08:06:20,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30
[2023-11-19 08:06:20,967 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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)
[2023-11-19 08:06:20,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:06:20,985 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions.
[2023-11-19 08:06:20,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 08:06:20,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 16
[2023-11-19 08:06:20,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:06:20,986 INFO L225 Difference]: With dead ends: 24
[2023-11-19 08:06:20,986 INFO L226 Difference]: Without dead ends: 22
[2023-11-19 08:06:20,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30
[2023-11-19 08:06:20,990 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 08:06:20,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 15 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 21 Unchecked, 0.0s Time]
[2023-11-19 08:06:20,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2023-11-19 08:06:20,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2023-11-19 08:06:20,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 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)
[2023-11-19 08:06:21,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions.
[2023-11-19 08:06:21,001 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 16
[2023-11-19 08:06:21,001 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:06:21,001 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions.
[2023-11-19 08:06:21,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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)
[2023-11-19 08:06:21,002 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions.
[2023-11-19 08:06:21,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2023-11-19 08:06:21,003 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:06:21,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:06:21,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-19 08:06:21,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:06:21,217 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-19 08:06:21,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:06:21,218 INFO L85 PathProgramCache]: Analyzing trace with hash -2094429314, now seen corresponding path program 1 times
[2023-11-19 08:06:21,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:06:21,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029444463]
[2023-11-19 08:06:21,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:06:21,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:06:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:06:21,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 08:06:21,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:06:21,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029444463]
[2023-11-19 08:06:21,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029444463] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:06:21,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:06:21,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 08:06:21,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260826949]
[2023-11-19 08:06:21,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:06:21,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 08:06:21,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:06:21,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 08:06:21,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 08:06:21,288 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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)
[2023-11-19 08:06:21,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:06:21,293 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions.
[2023-11-19 08:06:21,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 08:06:21,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16
[2023-11-19 08:06:21,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:06:21,294 INFO L225 Difference]: With dead ends: 19
[2023-11-19 08:06:21,295 INFO L226 Difference]: Without dead ends: 17
[2023-11-19 08:06:21,295 INFO L412 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
[2023-11-19 08:06:21,300 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 08:06:21,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 08:06:21,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2023-11-19 08:06:21,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2023-11-19 08:06:21,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 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)
[2023-11-19 08:06:21,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions.
[2023-11-19 08:06:21,309 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 16
[2023-11-19 08:06:21,311 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:06:21,311 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions.
[2023-11-19 08:06:21,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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)
[2023-11-19 08:06:21,311 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions.
[2023-11-19 08:06:21,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2023-11-19 08:06:21,312 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:06:21,313 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:06:21,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-11-19 08:06:21,321 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-19 08:06:21,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:06:21,322 INFO L85 PathProgramCache]: Analyzing trace with hash -2092797950, now seen corresponding path program 1 times
[2023-11-19 08:06:21,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:06:21,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354656246]
[2023-11-19 08:06:21,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:06:21,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:06:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:06:21,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-11-19 08:06:21,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:06:21,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354656246]
[2023-11-19 08:06:21,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354656246] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 08:06:21,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142174684]
[2023-11-19 08:06:21,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:06:21,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:06:21,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:06:21,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 08:06:21,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-19 08:06:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:06:21,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-19 08:06:21,477 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 08:06:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 08:06:21,609 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 08:06:21,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5
[2023-11-19 08:06:21,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 08:06:21,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142174684] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 08:06:21,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 08:06:21,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14
[2023-11-19 08:06:21,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107970610]
[2023-11-19 08:06:21,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 08:06:21,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2023-11-19 08:06:21,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:06:21,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2023-11-19 08:06:21,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2023-11-19 08:06:21,763 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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)
[2023-11-19 08:06:21,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:06:21,974 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions.
[2023-11-19 08:06:21,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2023-11-19 08:06:21,975 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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 16
[2023-11-19 08:06:21,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:06:21,976 INFO L225 Difference]: With dead ends: 36
[2023-11-19 08:06:21,976 INFO L226 Difference]: Without dead ends: 36
[2023-11-19 08:06:21,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380
[2023-11-19 08:06:21,989 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 40 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-19 08:06:21,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 35 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-19 08:06:21,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2023-11-19 08:06:21,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33.
[2023-11-19 08:06:21,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 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)
[2023-11-19 08:06:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions.
[2023-11-19 08:06:21,993 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 16
[2023-11-19 08:06:21,993 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:06:21,993 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions.
[2023-11-19 08:06:21,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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)
[2023-11-19 08:06:21,994 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions.
[2023-11-19 08:06:21,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2023-11-19 08:06:21,994 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:06:21,995 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:06:22,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-19 08:06:22,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:06:22,196 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-19 08:06:22,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:06:22,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1057501627, now seen corresponding path program 2 times
[2023-11-19 08:06:22,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:06:22,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357182473]
[2023-11-19 08:06:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:06:22,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:06:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:06:22,336 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked.
[2023-11-19 08:06:22,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:06:22,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357182473]
[2023-11-19 08:06:22,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357182473] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 08:06:22,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910705422]
[2023-11-19 08:06:22,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-11-19 08:06:22,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:06:22,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:06:22,338 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 08:06:22,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-19 08:06:22,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-11-19 08:06:22,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 08:06:22,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-19 08:06:22,428 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 08:06:22,690 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2023-11-19 08:06:22,690 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 08:06:22,933 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 7 treesize of output 5
[2023-11-19 08:06:22,968 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2023-11-19 08:06:22,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910705422] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 08:06:22,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 08:06:22,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 23
[2023-11-19 08:06:22,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637757642]
[2023-11-19 08:06:22,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 08:06:22,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2023-11-19 08:06:22,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:06:22,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2023-11-19 08:06:22,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506
[2023-11-19 08:06:22,971 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 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)
[2023-11-19 08:06:23,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:06:23,379 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions.
[2023-11-19 08:06:23,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2023-11-19 08:06:23,380 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 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
[2023-11-19 08:06:23,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:06:23,380 INFO L225 Difference]: With dead ends: 55
[2023-11-19 08:06:23,380 INFO L226 Difference]: Without dead ends: 55
[2023-11-19 08:06:23,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=239, Invalid=691, Unknown=0, NotChecked=0, Total=930
[2023-11-19 08:06:23,382 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 81 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-19 08:06:23,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 93 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-19 08:06:23,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2023-11-19 08:06:23,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52.
[2023-11-19 08:06:23,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 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)
[2023-11-19 08:06:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions.
[2023-11-19 08:06:23,387 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 32
[2023-11-19 08:06:23,387 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:06:23,387 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions.
[2023-11-19 08:06:23,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 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)
[2023-11-19 08:06:23,388 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions.
[2023-11-19 08:06:23,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2023-11-19 08:06:23,390 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:06:23,390 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:06:23,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-11-19 08:06:23,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-19 08:06:23,604 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-19 08:06:23,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:06:23,605 INFO L85 PathProgramCache]: Analyzing trace with hash 107977445, now seen corresponding path program 3 times
[2023-11-19 08:06:23,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:06:23,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276039431]
[2023-11-19 08:06:23,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:06:23,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:06:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:06:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked.
[2023-11-19 08:06:23,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:06:23,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276039431]
[2023-11-19 08:06:23,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276039431] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 08:06:23,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350854350]
[2023-11-19 08:06:23,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-11-19 08:06:23,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:06:23,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:06:23,839 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 08:06:23,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-19 08:06:23,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2023-11-19 08:06:23,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 08:06:23,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 20 conjunts are in the unsatisfiable core
[2023-11-19 08:06:23,927 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 08:06:23,936 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
[2023-11-19 08:06:24,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2023-11-19 08:06:24,307 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-11-19 08:06:24,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15
[2023-11-19 08:06:24,484 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked.
[2023-11-19 08:06:24,485 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 08:06:24,990 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 37 treesize of output 33
[2023-11-19 08:06:24,997 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 48 treesize of output 36
[2023-11-19 08:06:25,101 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked.
[2023-11-19 08:06:25,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350854350] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 08:06:25,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 08:06:25,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16
[2023-11-19 08:06:25,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699617926]
[2023-11-19 08:06:25,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 08:06:25,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2023-11-19 08:06:25,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:06:25,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2023-11-19 08:06:25,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240
[2023-11-19 08:06:25,105 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 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)
[2023-11-19 08:06:25,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:06:25,586 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions.
[2023-11-19 08:06:25,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2023-11-19 08:06:25,587 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 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 51
[2023-11-19 08:06:25,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:06:25,587 INFO L225 Difference]: With dead ends: 58
[2023-11-19 08:06:25,587 INFO L226 Difference]: Without dead ends: 0
[2023-11-19 08:06:25,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702
[2023-11-19 08:06:25,589 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-19 08:06:25,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 45 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-19 08:06:25,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2023-11-19 08:06:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2023-11-19 08:06:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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)
[2023-11-19 08:06:25,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2023-11-19 08:06:25,590 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51
[2023-11-19 08:06:25,590 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:06:25,590 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2023-11-19 08:06:25,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 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)
[2023-11-19 08:06:25,591 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2023-11-19 08:06:25,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2023-11-19 08:06:25,594 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining)
[2023-11-19 08:06:25,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining)
[2023-11-19 08:06:25,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining)
[2023-11-19 08:06:25,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining)
[2023-11-19 08:06:25,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining)
[2023-11-19 08:06:25,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining)
[2023-11-19 08:06:25,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining)
[2023-11-19 08:06:25,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining)
[2023-11-19 08:06:25,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining)
[2023-11-19 08:06:25,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining)
[2023-11-19 08:06:25,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-11-19 08:06:25,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-11-19 08:06:25,816 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:06:25,820 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2023-11-19 08:06:25,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:06:25 BoogieIcfgContainer
[2023-11-19 08:06:25,825 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-11-19 08:06:25,827 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2023-11-19 08:06:25,827 INFO L270 PluginConnector]: Initializing Witness Printer...
[2023-11-19 08:06:25,827 INFO L274 PluginConnector]: Witness Printer initialized
[2023-11-19 08:06:25,828 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:18" (3/4) ...
[2023-11-19 08:06:25,831 INFO L137 WitnessPrinter]: Generating witness for correct program
[2023-11-19 08:06:25,845 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges
[2023-11-19 08:06:25,845 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges
[2023-11-19 08:06:25,845 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges
[2023-11-19 08:06:25,846 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2023-11-19 08:06:25,972 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml
[2023-11-19 08:06:25,973 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/witness.yml
[2023-11-19 08:06:25,973 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-11-19 08:06:25,974 INFO L158 Benchmark]: Toolchain (without parser) took 8620.77ms. Allocated memory was 115.3MB in the beginning and 176.2MB in the end (delta: 60.8MB). Free memory was 72.2MB in the beginning and 130.8MB in the end (delta: -58.6MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB.
[2023-11-19 08:06:25,974 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 115.3MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 08:06:25,975 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.17ms. Allocated memory is still 115.3MB. Free memory was 71.6MB in the beginning and 61.5MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2023-11-19 08:06:25,975 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.06ms. Allocated memory is still 115.3MB. Free memory was 61.5MB in the beginning and 59.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-19 08:06:25,976 INFO L158 Benchmark]: Boogie Preprocessor took 41.70ms. Allocated memory is still 115.3MB. Free memory was 59.8MB in the beginning and 58.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-19 08:06:25,977 INFO L158 Benchmark]: RCFGBuilder took 414.04ms. Allocated memory is still 115.3MB. Free memory was 58.6MB in the beginning and 46.8MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2023-11-19 08:06:25,977 INFO L158 Benchmark]: TraceAbstraction took 7624.86ms. Allocated memory was 115.3MB in the beginning and 176.2MB in the end (delta: 60.8MB). Free memory was 46.0MB in the beginning and 134.8MB in the end (delta: -88.8MB). There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 08:06:25,978 INFO L158 Benchmark]: Witness Printer took 146.37ms. Allocated memory is still 176.2MB. Free memory was 134.8MB in the beginning and 130.8MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2023-11-19 08:06:25,980 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.39ms. Allocated memory is still 115.3MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 324.17ms. Allocated memory is still 115.3MB. Free memory was 71.6MB in the beginning and 61.5MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 56.06ms. Allocated memory is still 115.3MB. Free memory was 61.5MB in the beginning and 59.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 41.70ms. Allocated memory is still 115.3MB. Free memory was 59.8MB in the beginning and 58.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 414.04ms. Allocated memory is still 115.3MB. Free memory was 58.6MB in the beginning and 46.8MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 7624.86ms. Allocated memory was 115.3MB in the beginning and 176.2MB in the end (delta: 60.8MB). Free memory was 46.0MB in the beginning and 134.8MB in the end (delta: -88.8MB). There was no memory consumed. Max. memory is 16.1GB.
* Witness Printer took 146.37ms. Allocated memory is still 176.2MB. Free memory was 134.8MB in the beginning and 130.8MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. 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
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 3]: all allocated memory was freed
For all program executions holds that all allocated memory was freed at this location
- PositiveResult [Line: 12]: all allocated memory was freed
For all program executions holds that all allocated memory was freed at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 32 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 7.5s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 280 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 280 mSDsluCounter, 402 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 21 IncrementalHoareTripleChecker+Unchecked, 226 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 597 IncrementalHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 176 mSDtfsCounter, 597 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=10, InterpolantAutomatonStates: 71, 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, 11 MinimizatonAttempts, 47 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 298 NumberOfCodeBlocks, 263 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 378 ConstructedInterpolants, 1 QuantifiedInterpolants, 3566 SizeOfPredicates, 8 NumberOfNonLiveVariables, 549 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 497/663 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
- AllSpecificationsHoldResult: All specifications hold
10 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2023-11-19 08:06:26,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211d3bb6-b248-41ab-8bf1-e14016f16d99/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE