./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/sum04-1.i --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/loops/sum04-1.i -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 363837b614bad810335bbe0c369ca77c24cc87938da6245b414371c201391312
--- Real Ultimate output ---
This is Ultimate 0.2.2-dev-ff03de6
[2021-12-21 12:16:08,900 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-12-21 12:16:08,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-21 12:16:08,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-21 12:16:08,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-21 12:16:08,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-21 12:16:08,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-21 12:16:08,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-21 12:16:08,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-21 12:16:08,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-21 12:16:08,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-12-21 12:16:08,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-21 12:16:08,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-21 12:16:08,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-21 12:16:08,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-21 12:16:08,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-21 12:16:08,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-21 12:16:08,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-21 12:16:08,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-21 12:16:08,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-21 12:16:08,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-21 12:16:08,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-21 12:16:08,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-12-21 12:16:08,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-21 12:16:08,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-21 12:16:08,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-21 12:16:08,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-21 12:16:08,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-21 12:16:08,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-21 12:16:08,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-21 12:16:08,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-21 12:16:08,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-21 12:16:08,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-21 12:16:08,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-21 12:16:08,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-21 12:16:08,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-21 12:16:08,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-21 12:16:08,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-21 12:16:08,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-21 12:16:08,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-21 12:16:08,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-12-21 12:16:08,970 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-21 12:16:08,997 INFO L113 SettingsManager]: Loading preferences was successful
[2021-12-21 12:16:09,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-21 12:16:09,001 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-21 12:16:09,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-21 12:16:09,002 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-21 12:16:09,002 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-21 12:16:09,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-21 12:16:09,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-12-21 12:16:09,003 INFO L138 SettingsManager]: * Use SBE=true
[2021-12-21 12:16:09,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-21 12:16:09,004 INFO L138 SettingsManager]: * sizeof long=4
[2021-12-21 12:16:09,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-12-21 12:16:09,004 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-12-21 12:16:09,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-12-21 12:16:09,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-12-21 12:16:09,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-21 12:16:09,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-12-21 12:16:09,005 INFO L138 SettingsManager]: * sizeof long double=12
[2021-12-21 12:16:09,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-12-21 12:16:09,005 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-12-21 12:16:09,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-12-21 12:16:09,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-21 12:16:09,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-12-21 12:16:09,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-12-21 12:16:09,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-21 12:16:09,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-21 12:16:09,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-12-21 12:16:09,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-21 12:16:09,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-12-21 12:16:09,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-21 12:16:09,008 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-12-21 12:16:09,008 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-21 12:16:09,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-21 12:16:09,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-12-21 12:16:09,008 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 363837b614bad810335bbe0c369ca77c24cc87938da6245b414371c201391312
[2021-12-21 12:16:09,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-21 12:16:09,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-21 12:16:09,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-21 12:16:09,202 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-12-21 12:16:09,202 INFO L275 PluginConnector]: CDTParser initialized
[2021-12-21 12:16:09,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/sum04-1.i
[2021-12-21 12:16:09,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39e60246c/d615def344494964be939bbbbbd2356e/FLAG260b5b7c3
[2021-12-21 12:16:09,598 INFO L306 CDTParser]: Found 1 translation units.
[2021-12-21 12:16:09,599 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum04-1.i
[2021-12-21 12:16:09,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39e60246c/d615def344494964be939bbbbbd2356e/FLAG260b5b7c3
[2021-12-21 12:16:09,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39e60246c/d615def344494964be939bbbbbd2356e
[2021-12-21 12:16:09,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-21 12:16:09,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-21 12:16:09,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-21 12:16:09,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-21 12:16:10,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-21 12:16:10,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:16:09" (1/1) ...
[2021-12-21 12:16:10,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8771f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:16:10, skipping insertion in model container
[2021-12-21 12:16:10,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:16:09" (1/1) ...
[2021-12-21 12:16:10,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-12-21 12:16:10,024 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-12-21 12:16:10,117 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/loops/sum04-1.i[808,821]
[2021-12-21 12:16:10,128 INFO L209 PostProcessor]: Analyzing one entry point: main
[2021-12-21 12:16:10,136 INFO L203 MainTranslator]: Completed pre-run
[2021-12-21 12:16:10,150 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/loops/sum04-1.i[808,821]
[2021-12-21 12:16:10,153 INFO L209 PostProcessor]: Analyzing one entry point: main
[2021-12-21 12:16:10,162 INFO L208 MainTranslator]: Completed translation
[2021-12-21 12:16:10,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:16:10 WrapperNode
[2021-12-21 12:16:10,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-21 12:16:10,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-21 12:16:10,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-21 12:16:10,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-21 12:16:10,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:16:10" (1/1) ...
[2021-12-21 12:16:10,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:16:10" (1/1) ...
[2021-12-21 12:16:10,195 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28
[2021-12-21 12:16:10,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-21 12:16:10,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-21 12:16:10,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-21 12:16:10,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-12-21 12:16:10,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:16:10" (1/1) ...
[2021-12-21 12:16:10,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:16:10" (1/1) ...
[2021-12-21 12:16:10,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:16:10" (1/1) ...
[2021-12-21 12:16:10,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:16:10" (1/1) ...
[2021-12-21 12:16:10,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:16:10" (1/1) ...
[2021-12-21 12:16:10,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:16:10" (1/1) ...
[2021-12-21 12:16:10,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:16:10" (1/1) ...
[2021-12-21 12:16:10,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-21 12:16:10,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-21 12:16:10,214 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-12-21 12:16:10,214 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-12-21 12:16:10,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:16:10" (1/1) ...
[2021-12-21 12:16:10,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-21 12:16:10,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-21 12:16:10,256 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 12:16:10,278 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 12:16:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-21 12:16:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-21 12:16:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-21 12:16:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-21 12:16:10,334 INFO L234 CfgBuilder]: Building ICFG
[2021-12-21 12:16:10,335 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-21 12:16:10,408 INFO L275 CfgBuilder]: Performing block encoding
[2021-12-21 12:16:10,412 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-21 12:16:10,412 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-21 12:16:10,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:16:10 BoogieIcfgContainer
[2021-12-21 12:16:10,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-21 12:16:10,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-21 12:16:10,415 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-12-21 12:16:10,433 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-12-21 12:16:10,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:16:09" (1/3) ...
[2021-12-21 12:16:10,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560b24b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:16:10, skipping insertion in model container
[2021-12-21 12:16:10,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:16:10" (2/3) ...
[2021-12-21 12:16:10,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560b24b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:16:10, skipping insertion in model container
[2021-12-21 12:16:10,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:16:10" (3/3) ...
[2021-12-21 12:16:10,435 INFO L111 eAbstractionObserver]: Analyzing ICFG sum04-1.i
[2021-12-21 12:16:10,438 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-21 12:16:10,451 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-21 12:16:10,486 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-21 12:16:10,492 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 12:16:10,492 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-21 12:16:10,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 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)
[2021-12-21 12:16:10,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2021-12-21 12:16:10,508 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-21 12:16:10,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2021-12-21 12:16:10,508 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-21 12:16:10,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-21 12:16:10,512 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times
[2021-12-21 12:16:10,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-21 12:16:10,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23741860]
[2021-12-21 12:16:10,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-21 12:16:10,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-21 12:16:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-21 12:16:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-21 12:16:10,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-21 12:16:10,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23741860]
[2021-12-21 12:16:10,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23741860] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-21 12:16:10,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-21 12:16:10,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-21 12:16:10,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057625586]
[2021-12-21 12:16:10,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-21 12:16:10,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-12-21 12:16:10,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-21 12:16:10,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-12-21 12:16:10,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-12-21 12:16:10,676 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 12:16:10,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-21 12:16:10,686 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions.
[2021-12-21 12:16:10,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-12-21 12:16:10,687 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6
[2021-12-21 12:16:10,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-21 12:16:10,693 INFO L225 Difference]: With dead ends: 21
[2021-12-21 12:16:10,693 INFO L226 Difference]: Without dead ends: 9
[2021-12-21 12:16:10,695 INFO L932 BasicCegarLoop]: 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
[2021-12-21 12:16:10,699 INFO L933 BasicCegarLoop]: 14 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, 14 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
[2021-12-21 12:16:10,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-12-21 12:16:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states.
[2021-12-21 12:16:10,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9.
[2021-12-21 12:16:10,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 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)
[2021-12-21 12:16:10,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions.
[2021-12-21 12:16:10,729 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6
[2021-12-21 12:16:10,729 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-21 12:16:10,730 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions.
[2021-12-21 12:16:10,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 12:16:10,730 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions.
[2021-12-21 12:16:10,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2021-12-21 12:16:10,730 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-21 12:16:10,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2021-12-21 12:16:10,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-21 12:16:10,731 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-21 12:16:10,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-21 12:16:10,735 INFO L85 PathProgramCache]: Analyzing trace with hash 889610002, now seen corresponding path program 1 times
[2021-12-21 12:16:10,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-21 12:16:10,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497351898]
[2021-12-21 12:16:10,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-21 12:16:10,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-21 12:16:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-21 12:16:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-21 12:16:10,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-21 12:16:10,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497351898]
[2021-12-21 12:16:10,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497351898] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-21 12:16:10,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-21 12:16:10,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-21 12:16:10,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733835426]
[2021-12-21 12:16:10,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-21 12:16:10,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-21 12:16:10,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-21 12:16:10,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-21 12:16:10,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-21 12:16:10,794 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 12:16:10,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-21 12:16:10,821 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions.
[2021-12-21 12:16:10,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-12-21 12:16:10,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6
[2021-12-21 12:16:10,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-21 12:16:10,822 INFO L225 Difference]: With dead ends: 19
[2021-12-21 12:16:10,822 INFO L226 Difference]: Without dead ends: 12
[2021-12-21 12:16:10,825 INFO L932 BasicCegarLoop]: 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
[2021-12-21 12:16:10,827 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-12-21 12:16:10,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-12-21 12:16:10,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states.
[2021-12-21 12:16:10,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11.
[2021-12-21 12:16:10,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-21 12:16:10,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions.
[2021-12-21 12:16:10,834 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6
[2021-12-21 12:16:10,834 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-21 12:16:10,835 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions.
[2021-12-21 12:16:10,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 12:16:10,835 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions.
[2021-12-21 12:16:10,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2021-12-21 12:16:10,836 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-21 12:16:10,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-21 12:16:10,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-21 12:16:10,839 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-21 12:16:10,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-21 12:16:10,840 INFO L85 PathProgramCache]: Analyzing trace with hash -332619814, now seen corresponding path program 1 times
[2021-12-21 12:16:10,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-21 12:16:10,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727245472]
[2021-12-21 12:16:10,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-21 12:16:10,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-21 12:16:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-21 12:16:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-21 12:16:10,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-21 12:16:10,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727245472]
[2021-12-21 12:16:10,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727245472] provided 0 perfect and 1 imperfect interpolant sequences
[2021-12-21 12:16:10,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228993464]
[2021-12-21 12:16:10,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-21 12:16:10,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-21 12:16:10,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-21 12:16:10,881 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-12-21 12:16:10,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-12-21 12:16:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-21 12:16:10,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-12-21 12:16:10,929 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-21 12:16:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-21 12:16:10,996 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-21 12:16:11,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-21 12:16:11,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228993464] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-21 12:16:11,034 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-12-21 12:16:11,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2021-12-21 12:16:11,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138686667]
[2021-12-21 12:16:11,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-12-21 12:16:11,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-12-21 12:16:11,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-21 12:16:11,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-12-21 12:16:11,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2021-12-21 12:16:11,040 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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)
[2021-12-21 12:16:11,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-21 12:16:11,078 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions.
[2021-12-21 12:16:11,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-12-21 12:16:11,079 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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) Word has length 9
[2021-12-21 12:16:11,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-21 12:16:11,080 INFO L225 Difference]: With dead ends: 26
[2021-12-21 12:16:11,080 INFO L226 Difference]: Without dead ends: 19
[2021-12-21 12:16:11,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2021-12-21 12:16:11,082 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 13 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-12-21 12:16:11,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 14 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-12-21 12:16:11,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2021-12-21 12:16:11,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2021-12-21 12:16:11,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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 12:16:11,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions.
[2021-12-21 12:16:11,092 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9
[2021-12-21 12:16:11,092 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-21 12:16:11,092 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions.
[2021-12-21 12:16:11,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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)
[2021-12-21 12:16:11,093 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions.
[2021-12-21 12:16:11,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-12-21 12:16:11,093 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-21 12:16:11,093 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1]
[2021-12-21 12:16:11,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-12-21 12:16:11,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-21 12:16:11,300 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-21 12:16:11,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-21 12:16:11,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1967544752, now seen corresponding path program 1 times
[2021-12-21 12:16:11,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-21 12:16:11,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632012190]
[2021-12-21 12:16:11,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-21 12:16:11,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-21 12:16:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-21 12:16:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-21 12:16:11,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-21 12:16:11,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632012190]
[2021-12-21 12:16:11,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632012190] provided 0 perfect and 1 imperfect interpolant sequences
[2021-12-21 12:16:11,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819474078]
[2021-12-21 12:16:11,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-21 12:16:11,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-21 12:16:11,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-21 12:16:11,362 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-12-21 12:16:11,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-12-21 12:16:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-21 12:16:11,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-12-21 12:16:11,393 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-21 12:16:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-21 12:16:11,438 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-21 12:16:11,488 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-21 12:16:11,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819474078] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-21 12:16:11,489 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-12-21 12:16:11,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11
[2021-12-21 12:16:11,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787600880]
[2021-12-21 12:16:11,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-12-21 12:16:11,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2021-12-21 12:16:11,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-21 12:16:11,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-12-21 12:16:11,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110
[2021-12-21 12:16:11,491 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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)
[2021-12-21 12:16:11,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-21 12:16:11,526 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions.
[2021-12-21 12:16:11,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-12-21 12:16:11,526 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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) Word has length 18
[2021-12-21 12:16:11,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-21 12:16:11,528 INFO L225 Difference]: With dead ends: 40
[2021-12-21 12:16:11,528 INFO L226 Difference]: Without dead ends: 31
[2021-12-21 12:16:11,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110
[2021-12-21 12:16:11,529 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-12-21 12:16:11,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 26 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-12-21 12:16:11,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2021-12-21 12:16:11,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31.
[2021-12-21 12:16:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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)
[2021-12-21 12:16:11,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions.
[2021-12-21 12:16:11,533 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18
[2021-12-21 12:16:11,533 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-21 12:16:11,534 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions.
[2021-12-21 12:16:11,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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)
[2021-12-21 12:16:11,534 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions.
[2021-12-21 12:16:11,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2021-12-21 12:16:11,535 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-21 12:16:11,535 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1]
[2021-12-21 12:16:11,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2021-12-21 12:16:11,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2021-12-21 12:16:11,748 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-21 12:16:11,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-21 12:16:11,749 INFO L85 PathProgramCache]: Analyzing trace with hash -233243184, now seen corresponding path program 2 times
[2021-12-21 12:16:11,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-21 12:16:11,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642746314]
[2021-12-21 12:16:11,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-21 12:16:11,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-21 12:16:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-12-21 12:16:11,791 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-12-21 12:16:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-12-21 12:16:11,816 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-12-21 12:16:11,816 INFO L628 BasicCegarLoop]: Counterexample is feasible
[2021-12-21 12:16:11,817 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-12-21 12:16:11,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-12-21 12:16:11,821 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1]
[2021-12-21 12:16:11,823 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-12-21 12:16:11,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 12:16:11 BoogieIcfgContainer
[2021-12-21 12:16:11,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-12-21 12:16:11,840 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-12-21 12:16:11,840 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-12-21 12:16:11,841 INFO L275 PluginConnector]: Witness Printer initialized
[2021-12-21 12:16:11,841 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:16:10" (3/4) ...
[2021-12-21 12:16:11,842 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample
[2021-12-21 12:16:11,871 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml
[2021-12-21 12:16:11,871 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-12-21 12:16:11,872 INFO L158 Benchmark]: Toolchain (without parser) took 1879.67ms. Allocated memory is still 94.4MB. Free memory was 69.6MB in the beginning and 31.7MB in the end (delta: 37.9MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB.
[2021-12-21 12:16:11,872 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 77.6MB. Free memory is still 49.1MB. There was no memory consumed. Max. memory is 16.1GB.
[2021-12-21 12:16:11,872 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.50ms. Allocated memory is still 94.4MB. Free memory was 69.4MB in the beginning and 60.0MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2021-12-21 12:16:11,873 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.41ms. Allocated memory is still 94.4MB. Free memory was 60.0MB in the beginning and 58.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-12-21 12:16:11,873 INFO L158 Benchmark]: Boogie Preprocessor took 16.46ms. Allocated memory is still 94.4MB. Free memory was 58.6MB in the beginning and 57.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-12-21 12:16:11,873 INFO L158 Benchmark]: RCFGBuilder took 199.90ms. Allocated memory is still 94.4MB. Free memory was 57.5MB in the beginning and 49.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-12-21 12:16:11,874 INFO L158 Benchmark]: TraceAbstraction took 1425.13ms. Allocated memory is still 94.4MB. Free memory was 48.6MB in the beginning and 33.9MB in the end (delta: 14.8MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB.
[2021-12-21 12:16:11,874 INFO L158 Benchmark]: Witness Printer took 31.17ms. Allocated memory is still 94.4MB. Free memory was 33.9MB in the beginning and 31.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-12-21 12:16:11,875 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 77.6MB. Free memory is still 49.1MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 169.50ms. Allocated memory is still 94.4MB. Free memory was 69.4MB in the beginning and 60.0MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 32.41ms. Allocated memory is still 94.4MB. Free memory was 60.0MB in the beginning and 58.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 16.46ms. Allocated memory is still 94.4MB. Free memory was 58.6MB in the beginning and 57.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 199.90ms. Allocated memory is still 94.4MB. Free memory was 57.5MB in the beginning and 49.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 1425.13ms. Allocated memory is still 94.4MB. Free memory was 48.6MB in the beginning and 33.9MB in the end (delta: 14.8MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB.
* Witness Printer took 31.17ms. Allocated memory is still 94.4MB. Free memory was 33.9MB in the beginning and 31.7MB in the end (delta: 2.2MB). 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: 16]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L23] int i, sn=0;
[L24] i=1
VAL [i=1, sn=0]
[L24] COND TRUE i<=8
VAL [i=1, sn=0]
[L25] COND TRUE i<4
[L26] sn = sn + (2)
VAL [i=1, sn=2]
[L24] i++
VAL [i=2, sn=2]
[L24] COND TRUE i<=8
VAL [i=2, sn=2]
[L25] COND TRUE i<4
[L26] sn = sn + (2)
VAL [i=2, sn=4]
[L24] i++
VAL [i=3, sn=4]
[L24] COND TRUE i<=8
VAL [i=3, sn=4]
[L25] COND TRUE i<4
[L26] sn = sn + (2)
VAL [i=3, sn=6]
[L24] i++
VAL [i=4, sn=6]
[L24] COND TRUE i<=8
VAL [i=4, sn=6]
[L25] COND FALSE !(i<4)
VAL [i=4, sn=6]
[L24] i++
VAL [i=5, sn=6]
[L24] COND TRUE i<=8
VAL [i=5, sn=6]
[L25] COND FALSE !(i<4)
VAL [i=5, sn=6]
[L24] i++
VAL [i=6, sn=6]
[L24] COND TRUE i<=8
VAL [i=6, sn=6]
[L25] COND FALSE !(i<4)
VAL [i=6, sn=6]
[L24] i++
VAL [i=7, sn=6]
[L24] COND TRUE i<=8
VAL [i=7, sn=6]
[L25] COND FALSE !(i<4)
VAL [i=7, sn=6]
[L24] i++
VAL [i=8, sn=6]
[L24] COND TRUE i<=8
VAL [i=8, sn=6]
[L25] COND FALSE !(i<4)
VAL [i=8, sn=6]
[L24] i++
VAL [i=9, sn=6]
[L24] COND FALSE !(i<=8)
VAL [i=9, sn=6]
[L28] CALL __VERIFIER_assert(sn==8*(2) || sn == 0)
[L15] COND TRUE !(cond)
VAL [\old(cond)=0, cond=0]
[L16] reach_error()
VAL [\old(cond)=0, cond=0]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 5, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 65 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58 IncrementalHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 33 mSDtfsCounter, 58 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 203 SizeOfPredicates, 0 NumberOfNonLiveVariables, 94 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/69 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 12:16:11,913 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