./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/simple_2-2.c --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version ff03de63
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-acceleration/simple_2-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca20d2ad08bf0f7fa23e269f0ee97814132c0c2a0f348f398575419f579ef49b
--- Real Ultimate output ---
This is Ultimate 0.2.2-dev-ff03de6
[2021-12-21 12:17:56,926 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-21 12:17:56,929 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-21 12:17:56,973 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-21 12:17:56,973 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-21 12:17:56,976 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-21 12:17:56,977 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-21 12:17:56,979 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-21 12:17:56,981 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-21 12:17:56,984 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-21 12:17:56,985 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-21 12:17:56,986 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-21 12:17:56,986 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-21 12:17:56,988 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-21 12:17:56,989 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-21 12:17:56,992 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-21 12:17:56,993 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-21 12:17:56,994 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-21 12:17:56,995 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-21 12:17:57,000 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-21 12:17:57,001 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-21 12:17:57,002 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-21 12:17:57,003 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-21 12:17:57,004 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-21 12:17:57,009 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-21 12:17:57,009 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-21 12:17:57,009 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-21 12:17:57,010 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-21 12:17:57,011 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-21 12:17:57,011 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-21 12:17:57,012 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-21 12:17:57,012 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-21 12:17:57,014 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-21 12:17:57,015 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-21 12:17:57,015 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-21 12:17:57,016 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-21 12:17:57,016 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-21 12:17:57,016 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-21 12:17:57,016 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-21 12:17:57,017 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-21 12:17:57,018 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-21 12:17:57,019 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-21 12:17:57,043 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-21 12:17:57,043 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-21 12:17:57,044 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-21 12:17:57,044 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-21 12:17:57,044 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-21 12:17:57,045 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-21 12:17:57,045 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-21 12:17:57,045 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-21 12:17:57,045 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-21 12:17:57,046 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-21 12:17:57,046 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-21 12:17:57,046 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-21 12:17:57,047 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-21 12:17:57,047 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-21 12:17:57,047 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-21 12:17:57,047 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-21 12:17:57,047 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-21 12:17:57,047 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-21 12:17:57,047 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-21 12:17:57,048 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-21 12:17:57,048 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-21 12:17:57,048 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-21 12:17:57,048 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-21 12:17:57,048 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-21 12:17:57,048 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-21 12:17:57,048 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-21 12:17:57,049 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-21 12:17:57,049 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-21 12:17:57,049 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-21 12:17:57,049 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-21 12:17:57,049 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-21 12:17:57,049 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-21 12:17:57,049 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-21 12:17:57,050 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-21 12:17:57,050 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca20d2ad08bf0f7fa23e269f0ee97814132c0c2a0f348f398575419f579ef49b
[2021-12-21 12:17:57,228 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-21 12:17:57,246 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-21 12:17:57,248 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-21 12:17:57,249 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-21 12:17:57,250 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-21 12:17:57,251 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/simple_2-2.c
[2021-12-21 12:17:57,291 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/750209b20/0f9b676e088c4282843350869a1a8a3c/FLAG1810747f8
[2021-12-21 12:17:57,629 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-21 12:17:57,629 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/simple_2-2.c
[2021-12-21 12:17:57,633 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/750209b20/0f9b676e088c4282843350869a1a8a3c/FLAG1810747f8
[2021-12-21 12:17:57,641 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/750209b20/0f9b676e088c4282843350869a1a8a3c
[2021-12-21 12:17:57,642 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-21 12:17:57,643 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-21 12:17:57,645 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-21 12:17:57,646 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-21 12:17:57,648 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-21 12:17:57,648 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:17:57" (1/1) ...
[2021-12-21 12:17:57,649 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e221851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:17:57, skipping insertion in model container
[2021-12-21 12:17:57,649 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:17:57" (1/1) ...
[2021-12-21 12:17:57,654 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-21 12:17:57,661 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-21 12:17:57,795 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/simple_2-2.c[372,385]
[2021-12-21 12:17:57,802 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-21 12:17:57,809 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-21 12:17:57,817 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/simple_2-2.c[372,385]
[2021-12-21 12:17:57,819 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-21 12:17:57,826 INFO  L208         MainTranslator]: Completed translation
[2021-12-21 12:17:57,827 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:17:57 WrapperNode
[2021-12-21 12:17:57,827 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-21 12:17:57,828 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-21 12:17:57,828 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-21 12:17:57,828 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-21 12:17:57,832 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:17:57" (1/1) ...
[2021-12-21 12:17:57,837 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:17:57" (1/1) ...
[2021-12-21 12:17:57,847 INFO  L137                Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26
[2021-12-21 12:17:57,848 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-21 12:17:57,848 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-21 12:17:57,848 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-21 12:17:57,849 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-21 12:17:57,853 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:17:57" (1/1) ...
[2021-12-21 12:17:57,853 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:17:57" (1/1) ...
[2021-12-21 12:17:57,854 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:17:57" (1/1) ...
[2021-12-21 12:17:57,854 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:17:57" (1/1) ...
[2021-12-21 12:17:57,856 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:17:57" (1/1) ...
[2021-12-21 12:17:57,859 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:17:57" (1/1) ...
[2021-12-21 12:17:57,862 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:17:57" (1/1) ...
[2021-12-21 12:17:57,863 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-21 12:17:57,863 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-21 12:17:57,864 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-21 12:17:57,864 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-21 12:17:57,865 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:17:57" (1/1) ...
[2021-12-21 12:17:57,869 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-21 12:17:57,876 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-21 12:17:57,896 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-21 12:17:57,952 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-21 12:17:57,975 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-21 12:17:57,976 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-21 12:17:57,976 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-21 12:17:57,976 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-21 12:17:58,014 INFO  L234             CfgBuilder]: Building ICFG
[2021-12-21 12:17:58,015 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-21 12:17:58,088 INFO  L275             CfgBuilder]: Performing block encoding
[2021-12-21 12:17:58,092 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-21 12:17:58,092 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-21 12:17:58,093 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:17:58 BoogieIcfgContainer
[2021-12-21 12:17:58,094 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-21 12:17:58,095 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-21 12:17:58,095 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-21 12:17:58,098 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-21 12:17:58,098 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:17:57" (1/3) ...
[2021-12-21 12:17:58,098 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ff657f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:17:58, skipping insertion in model container
[2021-12-21 12:17:58,098 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:17:57" (2/3) ...
[2021-12-21 12:17:58,099 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ff657f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:17:58, skipping insertion in model container
[2021-12-21 12:17:58,099 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:17:58" (3/3) ...
[2021-12-21 12:17:58,100 INFO  L111   eAbstractionObserver]: Analyzing ICFG simple_2-2.c
[2021-12-21 12:17:58,103 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-21 12:17:58,103 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-21 12:17:58,134 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-21 12:17:58,140 INFO  L339      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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR
[2021-12-21 12:17:58,141 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-21 12:17:58,151 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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)
[2021-12-21 12:17:58,154 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2021-12-21 12:17:58,154 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-21 12:17:58,154 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2021-12-21 12:17:58,155 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-21 12:17:58,159 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-21 12:17:58,160 INFO  L85        PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times
[2021-12-21 12:17:58,165 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-21 12:17:58,165 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683812083]
[2021-12-21 12:17:58,165 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-21 12:17:58,166 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-21 12:17:58,235 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-12-21 12:17:58,235 INFO  L352             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-12-21 12:17:58,255 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-12-21 12:17:58,269 INFO  L133   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-12-21 12:17:58,270 INFO  L628         BasicCegarLoop]: Counterexample is feasible
[2021-12-21 12:17:58,271 INFO  L764   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-12-21 12:17:58,272 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-21 12:17:58,275 INFO  L732         BasicCegarLoop]: Path program histogram: [1]
[2021-12-21 12:17:58,277 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2021-12-21 12:17:58,289 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 12:17:58 BoogieIcfgContainer
[2021-12-21 12:17:58,290 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-12-21 12:17:58,292 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2021-12-21 12:17:58,292 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2021-12-21 12:17:58,292 INFO  L275        PluginConnector]: Witness Printer initialized
[2021-12-21 12:17:58,292 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:17:58" (3/4) ...
[2021-12-21 12:17:58,294 INFO  L131         WitnessPrinter]: Generating witness for reachability counterexample
[2021-12-21 12:17:58,317 INFO  L141         WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml
[2021-12-21 12:17:58,318 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-12-21 12:17:58,319 INFO  L158              Benchmark]: Toolchain (without parser) took 675.71ms. Allocated memory was 96.5MB in the beginning and 121.6MB in the end (delta: 25.2MB). Free memory was 68.1MB in the beginning and 73.0MB in the end (delta: -4.9MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB.
[2021-12-21 12:17:58,319 INFO  L158              Benchmark]: CDTParser took 0.16ms. Allocated memory is still 96.5MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB.
[2021-12-21 12:17:58,321 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 181.74ms. Allocated memory was 96.5MB in the beginning and 121.6MB in the end (delta: 25.2MB). Free memory was 68.1MB in the beginning and 98.2MB in the end (delta: -30.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-12-21 12:17:58,323 INFO  L158              Benchmark]: Boogie Procedure Inliner took 20.19ms. Allocated memory is still 121.6MB. Free memory was 98.2MB in the beginning and 97.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-12-21 12:17:58,323 INFO  L158              Benchmark]: Boogie Preprocessor took 14.48ms. Allocated memory is still 121.6MB. Free memory was 97.0MB in the beginning and 96.0MB in the end (delta: 960.6kB). There was no memory consumed. Max. memory is 16.1GB.
[2021-12-21 12:17:58,323 INFO  L158              Benchmark]: RCFGBuilder took 230.33ms. Allocated memory is still 121.6MB. Free memory was 96.0MB in the beginning and 87.3MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-12-21 12:17:58,324 INFO  L158              Benchmark]: TraceAbstraction took 195.02ms. Allocated memory is still 121.6MB. Free memory was 87.1MB in the beginning and 74.6MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2021-12-21 12:17:58,324 INFO  L158              Benchmark]: Witness Printer took 26.31ms. Allocated memory is still 121.6MB. Free memory was 74.6MB in the beginning and 73.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-12-21 12:17:58,327 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.16ms. Allocated memory is still 96.5MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 181.74ms. Allocated memory was 96.5MB in the beginning and 121.6MB in the end (delta: 25.2MB). Free memory was 68.1MB in the beginning and 98.2MB in the end (delta: -30.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 20.19ms. Allocated memory is still 121.6MB. Free memory was 98.2MB in the beginning and 97.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * Boogie Preprocessor took 14.48ms. Allocated memory is still 121.6MB. Free memory was 97.0MB in the beginning and 96.0MB in the end (delta: 960.6kB). There was no memory consumed. Max. memory is 16.1GB.
 * RCFGBuilder took 230.33ms. Allocated memory is still 121.6MB. Free memory was 96.0MB in the beginning and 87.3MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
 * TraceAbstraction took 195.02ms. Allocated memory is still 121.6MB. Free memory was 87.1MB in the beginning and 74.6MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
 * Witness Printer took 26.31ms. Allocated memory is still 121.6MB. Free memory was 74.6MB in the beginning and 73.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. 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: 8]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L14]              unsigned int x = __VERIFIER_nondet_uint();
[L16]  COND FALSE  !(x < 0x0fffffff)
       VAL         [x=268435455]
[L20]  CALL        __VERIFIER_assert(x > 0x0fffffff)
[L7]   COND TRUE   !(cond)
       VAL         [\old(cond)=0, cond=0]
[L8]               reach_error()
       VAL         [\old(cond)=0, cond=0]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 6 NumberOfCodeBlocks, 6 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!
[2021-12-21 12:17:58,374 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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