/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/simple_2-2.c


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


This is Ultimate 0.1.25-d623d84
[2020-07-20 11:49:06,264 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-07-20 11:49:06,267 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 11:49:06,280 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 11:49:06,281 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 11:49:06,282 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 11:49:06,283 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 11:49:06,285 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 11:49:06,287 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 11:49:06,288 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 11:49:06,289 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 11:49:06,290 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 11:49:06,291 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 11:49:06,292 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 11:49:06,293 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 11:49:06,294 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 11:49:06,295 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 11:49:06,296 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 11:49:06,298 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 11:49:06,300 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 11:49:06,302 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 11:49:06,303 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 11:49:06,305 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 11:49:06,306 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 11:49:06,308 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 11:49:06,309 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 11:49:06,309 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 11:49:06,310 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 11:49:06,311 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 11:49:06,312 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 11:49:06,312 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 11:49:06,313 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 11:49:06,314 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-20 11:49:06,315 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-20 11:49:06,316 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 11:49:06,316 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-20 11:49:06,317 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-20 11:49:06,317 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-20 11:49:06,317 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-20 11:49:06,318 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-20 11:49:06,319 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 11:49:06,320 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-07-20 11:49:06,335 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-07-20 11:49:06,336 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 11:49:06,337 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 11:49:06,337 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-07-20 11:49:06,338 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-07-20 11:49:06,338 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 11:49:06,338 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-07-20 11:49:06,338 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-07-20 11:49:06,338 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-07-20 11:49:06,339 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-07-20 11:49:06,339 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 11:49:06,339 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 11:49:06,339 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 11:49:06,339 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-07-20 11:49:06,340 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-07-20 11:49:06,340 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-07-20 11:49:06,340 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-07-20 11:49:06,340 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 11:49:06,340 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-07-20 11:49:06,341 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-07-20 11:49:06,341 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-07-20 11:49:06,341 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 11:49:06,341 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 11:49:06,342 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 11:49:06,342 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 11:49:06,342 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-07-20 11:49:06,342 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:49:06,342 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 11:49:06,342 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-07-20 11:49:06,343 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY
[2020-07-20 11:49:06,661 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 11:49:06,676 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 11:49:06,680 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 11:49:06,682 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-07-20 11:49:06,682 INFO  L275        PluginConnector]: CDTParser initialized
[2020-07-20 11:49:06,683 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_2-2.c
[2020-07-20 11:49:06,766 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/267b62337/a4e496228e2946f091a4148c319315b5/FLAG5a25e92b2
[2020-07-20 11:49:07,332 INFO  L306              CDTParser]: Found 1 translation units.
[2020-07-20 11:49:07,333 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_2-2.c
[2020-07-20 11:49:07,342 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/267b62337/a4e496228e2946f091a4148c319315b5/FLAG5a25e92b2
[2020-07-20 11:49:07,736 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/267b62337/a4e496228e2946f091a4148c319315b5
[2020-07-20 11:49:07,746 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 11:49:07,750 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 11:49:07,751 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 11:49:07,751 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 11:49:07,754 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 11:49:07,755 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:49:07" (1/1) ...
[2020-07-20 11:49:07,758 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ecaa546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:07, skipping insertion in model container
[2020-07-20 11:49:07,758 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:49:07" (1/1) ...
[2020-07-20 11:49:07,766 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-07-20 11:49:07,787 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-07-20 11:49:07,945 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-20 11:49:07,949 INFO  L203         MainTranslator]: Completed pre-run
[2020-07-20 11:49:07,962 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-20 11:49:07,974 INFO  L208         MainTranslator]: Completed translation
[2020-07-20 11:49:07,975 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:07 WrapperNode
[2020-07-20 11:49:07,975 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 11:49:07,976 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 11:49:07,976 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 11:49:07,976 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 11:49:07,986 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:07" (1/1) ...
[2020-07-20 11:49:07,987 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:07" (1/1) ...
[2020-07-20 11:49:07,993 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:07" (1/1) ...
[2020-07-20 11:49:07,993 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:07" (1/1) ...
[2020-07-20 11:49:07,997 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:07" (1/1) ...
[2020-07-20 11:49:08,002 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:07" (1/1) ...
[2020-07-20 11:49:08,003 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:07" (1/1) ...
[2020-07-20 11:49:08,087 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 11:49:08,088 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 11:49:08,088 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 11:49:08,088 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-07-20 11:49:08,089 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:07" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 11:49:08,158 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 11:49:08,159 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 11:49:08,159 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-07-20 11:49:08,159 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 11:49:08,159 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 11:49:08,159 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint
[2020-07-20 11:49:08,160 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-07-20 11:49:08,160 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-07-20 11:49:08,160 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 11:49:08,160 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 11:49:08,335 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 11:49:08,335 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-07-20 11:49:08,339 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:49:08 BoogieIcfgContainer
[2020-07-20 11:49:08,339 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 11:49:08,340 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 11:49:08,341 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 11:49:08,344 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-07-20 11:49:08,344 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:49:07" (1/3) ...
[2020-07-20 11:49:08,345 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6106a76a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:49:08, skipping insertion in model container
[2020-07-20 11:49:08,345 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:07" (2/3) ...
[2020-07-20 11:49:08,346 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6106a76a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:49:08, skipping insertion in model container
[2020-07-20 11:49:08,346 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:49:08" (3/3) ...
[2020-07-20 11:49:08,348 INFO  L109   eAbstractionObserver]: Analyzing ICFG simple_2-2.c
[2020-07-20 11:49:08,360 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 11:49:08,368 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-20 11:49:08,382 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-20 11:49:08,409 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-07-20 11:49:08,409 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-07-20 11:49:08,409 INFO  L377      AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 11:49:08,409 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 11:49:08,410 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 11:49:08,410 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-07-20 11:49:08,410 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 11:49:08,410 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 11:49:08,429 INFO  L276                IsEmpty]: Start isEmpty. Operand 17 states.
[2020-07-20 11:49:08,434 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-07-20 11:49:08,434 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 11:49:08,435 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 11:49:08,436 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:49:08,441 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:49:08,441 INFO  L82        PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times
[2020-07-20 11:49:08,449 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:49:08,449 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984777343]
[2020-07-20 11:49:08,450 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:49:08,507 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-20 11:49:08,508 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 11:49:08,518 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-20 11:49:08,518 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 11:49:08,537 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-20 11:49:08,538 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-07-20 11:49:08,753 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:49:08,776 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:49:08 BoogieIcfgContainer
[2020-07-20 11:49:08,777 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 11:49:08,780 INFO  L168              Benchmark]: Toolchain (without parser) took 1030.69 ms. Allocated memory was 134.7 MB in the beginning and 198.7 MB in the end (delta: 64.0 MB). Free memory was 99.1 MB in the beginning and 152.6 MB in the end (delta: -53.5 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB.
[2020-07-20 11:49:08,783 INFO  L168              Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 134.7 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-07-20 11:49:08,784 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 224.58 ms. Allocated memory is still 134.7 MB. Free memory was 98.9 MB in the beginning and 89.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB.
[2020-07-20 11:49:08,786 INFO  L168              Benchmark]: Boogie Preprocessor took 111.98 ms. Allocated memory was 134.7 MB in the beginning and 198.7 MB in the end (delta: 64.0 MB). Free memory was 89.6 MB in the beginning and 178.7 MB in the end (delta: -89.2 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB.
[2020-07-20 11:49:08,787 INFO  L168              Benchmark]: RCFGBuilder took 251.22 ms. Allocated memory is still 198.7 MB. Free memory was 178.7 MB in the beginning and 166.2 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB.
[2020-07-20 11:49:08,788 INFO  L168              Benchmark]: TraceAbstraction took 436.32 ms. Allocated memory is still 198.7 MB. Free memory was 165.5 MB in the beginning and 152.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB.
[2020-07-20 11:49:08,796 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.23 ms. Allocated memory is still 134.7 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 224.58 ms. Allocated memory is still 134.7 MB. Free memory was 98.9 MB in the beginning and 89.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 111.98 ms. Allocated memory was 134.7 MB in the beginning and 198.7 MB in the end (delta: 64.0 MB). Free memory was 89.6 MB in the beginning and 178.7 MB in the end (delta: -89.2 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 251.22 ms. Allocated memory is still 198.7 MB. Free memory was 178.7 MB in the beginning and 166.2 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 436.32 ms. Allocated memory is still 198.7 MB. Free memory was 165.5 MB in the beginning and 152.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L12]              unsigned int x = __VERIFIER_nondet_uint();
[L14]  COND FALSE  !(x < 0x0fffffff)
       VAL         [x=268435455]
[L18]  CALL        __VERIFIER_assert(x > 0x0fffffff)
       VAL         [\old(cond)=0]
[L5]   COND TRUE   !(cond)
       VAL         [\old(cond)=0, cond=0]
[L6]               __VERIFIER_error()
       VAL         [\old(cond)=0, cond=0]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=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, 10 NumberOfCodeBlocks, 10 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!
Received shutdown request...