./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for overflows
Using default analysis
Version 9bd2c7ff
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98017bb1-eb9c-4ab3-82a2-5e63247b9c79/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98017bb1-eb9c-4ab3-82a2-5e63247b9c79/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_98017bb1-eb9c-4ab3-82a2-5e63247b9c79/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98017bb1-eb9c-4ab3-82a2-5e63247b9c79/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98017bb1-eb9c-4ab3-82a2-5e63247b9c79/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98017bb1-eb9c-4ab3-82a2-5e63247b9c79/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 04682225c8f8ef1d718e2eff7a5dbc28147daac3b8dcdca523479af4f0e32241
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:36:48,691 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:36:48,791 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98017bb1-eb9c-4ab3-82a2-5e63247b9c79/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf
[2023-11-19 07:36:48,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:36:48,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:36:48,819 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:36:48,820 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:36:48,821 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:36:48,822 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:36:48,823 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:36:48,823 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:36:48,824 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 07:36:48,825 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 07:36:48,826 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:36:48,826 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-11-19 07:36:48,827 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-19 07:36:48,827 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 07:36:48,828 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-19 07:36:48,828 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 07:36:48,829 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 07:36:48,830 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:36:48,830 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 07:36:48,831 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true
[2023-11-19 07:36:48,832 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2023-11-19 07:36:48,832 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-19 07:36:48,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-11-19 07:36:48,833 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 07:36:48,834 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:36:48,835 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 07:36:48,835 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 07:36:48,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:36:48,836 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:36:48,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:36:48,837 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 07:36:48,838 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-11-19 07:36:48,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:36:48,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:36:48,839 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 07:36:48,840 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:36:48,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:36:48,841 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:36:48,841 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_98017bb1-eb9c-4ab3-82a2-5e63247b9c79/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98017bb1-eb9c-4ab3-82a2-5e63247b9c79/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04682225c8f8ef1d718e2eff7a5dbc28147daac3b8dcdca523479af4f0e32241
[2023-11-19 07:36:49,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:36:49,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:36:49,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:36:49,161 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 07:36:49,162 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 07:36:49,163 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98017bb1-eb9c-4ab3-82a2-5e63247b9c79/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c
[2023-11-19 07:36:52,270 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:36:52,497 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 07:36:52,498 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98017bb1-eb9c-4ab3-82a2-5e63247b9c79/sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c
[2023-11-19 07:36:52,508 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98017bb1-eb9c-4ab3-82a2-5e63247b9c79/bin/uautomizer-verify-uCwYo4JHxu/data/563f4f5a5/5c0f40d253a949bf9f7f4e69204b3b2a/FLAG69de35cfa
[2023-11-19 07:36:52,527 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98017bb1-eb9c-4ab3-82a2-5e63247b9c79/bin/uautomizer-verify-uCwYo4JHxu/data/563f4f5a5/5c0f40d253a949bf9f7f4e69204b3b2a
[2023-11-19 07:36:52,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:36:52,533 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:36:52,535 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:36:52,535 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:36:52,542 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:36:52,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:52" (1/1) ...
[2023-11-19 07:36:52,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b57f151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52, skipping insertion in model container
[2023-11-19 07:36:52,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:52" (1/1) ...
[2023-11-19 07:36:52,570 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:36:52,796 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:36:52,807 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 07:36:52,825 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:36:52,841 INFO L206 MainTranslator]: Completed translation
[2023-11-19 07:36:52,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52 WrapperNode
[2023-11-19 07:36:52,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:36:52,843 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:36:52,843 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:36:52,843 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:36:52,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ...
[2023-11-19 07:36:52,860 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ...
[2023-11-19 07:36:52,880 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25
[2023-11-19 07:36:52,881 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:36:52,882 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:36:52,882 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:36:52,882 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:36:52,895 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ...
[2023-11-19 07:36:52,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ...
[2023-11-19 07:36:52,910 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ...
[2023-11-19 07:36:52,910 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ...
[2023-11-19 07:36:52,913 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ...
[2023-11-19 07:36:52,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ...
[2023-11-19 07:36:52,919 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ...
[2023-11-19 07:36:52,920 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ...
[2023-11-19 07:36:52,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:36:52,923 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:36:52,923 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:36:52,923 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:36:52,924 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ...
[2023-11-19 07:36:52,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:36:52,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98017bb1-eb9c-4ab3-82a2-5e63247b9c79/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:36:52,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98017bb1-eb9c-4ab3-82a2-5e63247b9c79/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:36:52,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98017bb1-eb9c-4ab3-82a2-5e63247b9c79/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:36:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:36:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure isEven
[2023-11-19 07:36:53,013 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven
[2023-11-19 07:36:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 07:36:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd
[2023-11-19 07:36:53,013 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd
[2023-11-19 07:36:53,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:36:53,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:36:53,102 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 07:36:53,105 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:36:53,371 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 07:36:53,380 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:36:53,380 INFO L302 CfgBuilder]: Removed 0 assume(true) statements.
[2023-11-19 07:36:53,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:53 BoogieIcfgContainer
[2023-11-19 07:36:53,385 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:36:53,388 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:36:53,388 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:36:53,392 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:36:53,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:52" (1/3) ...
[2023-11-19 07:36:53,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167e9de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:53, skipping insertion in model container
[2023-11-19 07:36:53,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (2/3) ...
[2023-11-19 07:36:53,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167e9de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:53, skipping insertion in model container
[2023-11-19 07:36:53,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:53" (3/3) ...
[2023-11-19 07:36:53,395 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd03WithOverflowBug.c
[2023-11-19 07:36:53,413 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:36:53,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations.
[2023-11-19 07:36:53,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:36:53,475 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c97b3b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:36:53,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2023-11-19 07:36:53,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 26 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-11-19 07:36:53,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2023-11-19 07:36:53,488 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:36:53,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:36:53,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] ===
[2023-11-19 07:36:53,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:36:53,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1100498903, now seen corresponding path program 1 times
[2023-11-19 07:36:53,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:36:53,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568928079]
[2023-11-19 07:36:53,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:36:53,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:36:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:36:53,619 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-19 07:36:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:36:53,655 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-11-19 07:36:53,657 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2023-11-19 07:36:53,659 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining)
[2023-11-19 07:36:53,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining)
[2023-11-19 07:36:53,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining)
[2023-11-19 07:36:53,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining)
[2023-11-19 07:36:53,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 07:36:53,669 INFO L445 BasicCegarLoop]: Path program histogram: [1]
[2023-11-19 07:36:53,676 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2023-11-19 07:36:53,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:36:53 BoogieIcfgContainer
[2023-11-19 07:36:53,703 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-11-19 07:36:53,704 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2023-11-19 07:36:53,704 INFO L270 PluginConnector]: Initializing Witness Printer...
[2023-11-19 07:36:53,705 INFO L274 PluginConnector]: Witness Printer initialized
[2023-11-19 07:36:53,705 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:53" (3/4) ...
[2023-11-19 07:36:53,707 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample
[2023-11-19 07:36:53,773 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98017bb1-eb9c-4ab3-82a2-5e63247b9c79/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml
[2023-11-19 07:36:53,774 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-11-19 07:36:53,775 INFO L158 Benchmark]: Toolchain (without parser) took 1242.49ms. Allocated memory is still 180.4MB. Free memory was 148.4MB in the beginning and 114.6MB in the end (delta: 33.8MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB.
[2023-11-19 07:36:53,776 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory is still 96.7MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 07:36:53,781 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.47ms. Allocated memory is still 180.4MB. Free memory was 147.4MB in the beginning and 143.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2023-11-19 07:36:53,784 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.53ms. Allocated memory is still 180.4MB. Free memory was 143.9MB in the beginning and 142.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-19 07:36:53,785 INFO L158 Benchmark]: Boogie Preprocessor took 39.92ms. Allocated memory is still 180.4MB. Free memory was 142.5MB in the beginning and 141.7MB in the end (delta: 780.2kB). There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 07:36:53,785 INFO L158 Benchmark]: RCFGBuilder took 462.06ms. Allocated memory is still 180.4MB. Free memory was 140.7MB in the beginning and 130.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2023-11-19 07:36:53,786 INFO L158 Benchmark]: TraceAbstraction took 315.68ms. Allocated memory is still 180.4MB. Free memory was 129.3MB in the beginning and 115.5MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
[2023-11-19 07:36:53,786 INFO L158 Benchmark]: Witness Printer took 69.82ms. Allocated memory is still 180.4MB. Free memory was 115.5MB in the beginning and 114.6MB in the end (delta: 962.6kB). There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 07:36:53,789 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory is still 96.7MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 307.47ms. Allocated memory is still 180.4MB. Free memory was 147.4MB in the beginning and 143.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 38.53ms. Allocated memory is still 180.4MB. Free memory was 143.9MB in the beginning and 142.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 39.92ms. Allocated memory is still 180.4MB. Free memory was 142.5MB in the beginning and 141.7MB in the end (delta: 780.2kB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 462.06ms. Allocated memory is still 180.4MB. Free memory was 140.7MB in the beginning and 130.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 315.68ms. Allocated memory is still 180.4MB. Free memory was 129.3MB in the beginning and 115.5MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
* Witness Printer took 69.82ms. Allocated memory is still 180.4MB. Free memory was 115.5MB in the beginning and 114.6MB in the end (delta: 962.6kB). There was no memory consumed. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- CounterExampleResult [Line: 34]: integer overflow possible
integer overflow possible
We found a FailurePath:
[L40] int n = __VERIFIER_nondet_int();
[L41] CALL isEven(n)
VAL [\old(n)=-2147483648]
[L29] COND FALSE !(n == 0)
VAL [\old(n)=-2147483648, n=-2147483648]
[L31] COND FALSE !(n == 1)
VAL [\old(n)=-2147483648, n=-2147483648]
[L34] n - 1
VAL [\old(n)=-2147483648, n=-2147483648]
- UnprovableResult [Line: 34]: Unable to prove that integer overflow can never occur
Unable to prove that integer overflow can never occur
Reason: Not analyzed.
- UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur
Unable to prove that integer overflow can never occur
Reason: Not analyzed.
- UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur
Unable to prove that integer overflow can never occur
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 32 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2023-11-19 07:36:53,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98017bb1-eb9c-4ab3-82a2-5e63247b9c79/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
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE(OVERFLOW)