/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...