java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call3_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 11:36:08,325 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 11:36:08,327 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 11:36:08,339 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 11:36:08,340 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 11:36:08,341 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 11:36:08,342 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 11:36:08,344 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 11:36:08,346 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 11:36:08,347 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 11:36:08,348 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 11:36:08,348 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 11:36:08,349 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 11:36:08,351 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 11:36:08,352 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 11:36:08,353 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 11:36:08,354 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 11:36:08,356 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 11:36:08,358 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 11:36:08,360 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 11:36:08,361 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 11:36:08,363 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 11:36:08,365 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 11:36:08,366 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 11:36:08,366 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 11:36:08,367 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 11:36:08,368 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 11:36:08,369 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 11:36:08,370 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 11:36:08,371 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 11:36:08,371 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 11:36:08,372 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 11:36:08,372 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 11:36:08,373 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 11:36:08,374 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 11:36:08,375 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 11:36:08,375 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf [2018-09-19 11:36:08,392 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 11:36:08,392 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 11:36:08,393 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 11:36:08,393 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 11:36:08,394 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 11:36:08,394 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 11:36:08,394 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 11:36:08,394 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-19 11:36:08,395 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-19 11:36:08,395 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 11:36:08,395 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 11:36:08,395 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 11:36:08,396 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 11:36:08,396 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 11:36:08,397 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 11:36:08,397 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 11:36:08,397 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 11:36:08,397 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 11:36:08,397 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 11:36:08,398 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 11:36:08,398 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 11:36:08,398 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 11:36:08,398 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 11:36:08,398 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 11:36:08,398 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 11:36:08,399 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 11:36:08,399 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 11:36:08,399 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 11:36:08,399 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 11:36:08,399 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 11:36:08,400 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 11:36:08,400 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 11:36:08,400 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 11:36:08,400 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 11:36:08,475 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 11:36:08,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 11:36:08,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 11:36:08,495 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 11:36:08,496 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 11:36:08,496 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call3_true-termination.i [2018-09-19 11:36:08,862 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2c6ad8d3/017b96eddd1c49bd843ce11bd3c9b864/FLAGfa7e8ef59 [2018-09-19 11:36:09,000 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 11:36:09,001 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_true-unreach-call3_true-termination.i [2018-09-19 11:36:09,008 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2c6ad8d3/017b96eddd1c49bd843ce11bd3c9b864/FLAGfa7e8ef59 [2018-09-19 11:36:09,024 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2c6ad8d3/017b96eddd1c49bd843ce11bd3c9b864 [2018-09-19 11:36:09,035 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 11:36:09,038 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 11:36:09,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 11:36:09,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 11:36:09,047 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 11:36:09,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 11:36:09" (1/1) ... [2018-09-19 11:36:09,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2889c7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:09, skipping insertion in model container [2018-09-19 11:36:09,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 11:36:09" (1/1) ... [2018-09-19 11:36:09,063 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 11:36:09,255 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 11:36:09,274 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 11:36:09,279 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 11:36:09,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:09 WrapperNode [2018-09-19 11:36:09,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 11:36:09,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 11:36:09,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 11:36:09,297 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 11:36:09,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:09" (1/1) ... [2018-09-19 11:36:09,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:09" (1/1) ... [2018-09-19 11:36:09,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 11:36:09,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 11:36:09,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 11:36:09,323 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 11:36:09,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:09" (1/1) ... [2018-09-19 11:36:09,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:09" (1/1) ... [2018-09-19 11:36:09,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:09" (1/1) ... [2018-09-19 11:36:09,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:09" (1/1) ... [2018-09-19 11:36:09,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:09" (1/1) ... [2018-09-19 11:36:09,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:09" (1/1) ... [2018-09-19 11:36:09,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:09" (1/1) ... [2018-09-19 11:36:09,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 11:36:09,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 11:36:09,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 11:36:09,360 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 11:36:09,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:09" (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 [2018-09-19 11:36:09,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 11:36:09,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 11:36:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 11:36:09,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 11:36:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 11:36:09,439 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 11:36:09,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 11:36:09,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 11:36:09,901 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 11:36:09,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 11:36:09 BoogieIcfgContainer [2018-09-19 11:36:09,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 11:36:09,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 11:36:09,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 11:36:09,906 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 11:36:09,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 11:36:09" (1/3) ... [2018-09-19 11:36:09,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f804d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 11:36:09, skipping insertion in model container [2018-09-19 11:36:09,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:09" (2/3) ... [2018-09-19 11:36:09,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f804d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 11:36:09, skipping insertion in model container [2018-09-19 11:36:09,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 11:36:09" (3/3) ... [2018-09-19 11:36:09,910 INFO L112 eAbstractionObserver]: Analyzing ICFG array_true-unreach-call3_true-termination.i [2018-09-19 11:36:09,920 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 11:36:09,928 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 11:36:09,994 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 11:36:09,995 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 11:36:09,995 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 11:36:09,995 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 11:36:09,995 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 11:36:09,996 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 11:36:09,996 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 11:36:09,996 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 11:36:09,996 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 11:36:10,015 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-09-19 11:36:10,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-19 11:36:10,022 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:36:10,024 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 11:36:10,025 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:36:10,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1650809888, now seen corresponding path program 1 times [2018-09-19 11:36:10,033 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:36:10,034 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-09-19 11:36:10,036 INFO L202 CegarAbsIntRunner]: [0], [4], [17], [19], [37], [41], [44], [46], [52], [53], [54], [56] [2018-09-19 11:36:10,074 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 11:36:10,074 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:36:10,153 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:36:10,155 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-19 11:36:10,192 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:36:10,237 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 100% of their original sizes. [2018-09-19 11:36:10,238 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:36:10,240 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:36:10,242 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:36:10,242 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 11:36:10,242 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:36:10,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 11:36:10,252 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 11:36:10,253 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 11:36:10,255 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2018-09-19 11:36:10,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:36:10,278 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2018-09-19 11:36:10,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 11:36:10,280 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-09-19 11:36:10,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:36:10,289 INFO L225 Difference]: With dead ends: 40 [2018-09-19 11:36:10,289 INFO L226 Difference]: Without dead ends: 18 [2018-09-19 11:36:10,293 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 11:36:10,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-19 11:36:10,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-09-19 11:36:10,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-09-19 11:36:10,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-09-19 11:36:10,329 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2018-09-19 11:36:10,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:36:10,330 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-09-19 11:36:10,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 11:36:10,330 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-09-19 11:36:10,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-19 11:36:10,331 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:36:10,331 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 11:36:10,332 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:36:10,332 INFO L82 PathProgramCache]: Analyzing trace with hash 985779568, now seen corresponding path program 1 times [2018-09-19 11:36:10,333 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:36:10,333 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-19 11:36:10,333 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [19], [23], [26], [41], [44], [46], [52], [53], [54], [56] [2018-09-19 11:36:10,335 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 11:36:10,335 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:36:10,348 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:36:10,350 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-19 11:36:10,382 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:36:10,395 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-19 11:36:10,396 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:36:10,400 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:36:10,401 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:36:10,401 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 11:36:10,401 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:36:10,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 11:36:10,402 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 11:36:10,402 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 11:36:10,403 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2018-09-19 11:36:10,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:36:10,525 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2018-09-19 11:36:10,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 11:36:10,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-09-19 11:36:10,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:36:10,529 INFO L225 Difference]: With dead ends: 36 [2018-09-19 11:36:10,529 INFO L226 Difference]: Without dead ends: 26 [2018-09-19 11:36:10,530 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 11:36:10,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-09-19 11:36:10,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2018-09-19 11:36:10,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-19 11:36:10,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2018-09-19 11:36:10,538 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2018-09-19 11:36:10,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:36:10,538 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2018-09-19 11:36:10,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 11:36:10,538 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2018-09-19 11:36:10,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-19 11:36:10,539 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:36:10,539 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 11:36:10,539 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:36:10,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1820013554, now seen corresponding path program 1 times [2018-09-19 11:36:10,540 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:36:10,540 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-09-19 11:36:10,540 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [13], [15], [19], [23], [26], [41], [44], [46], [52], [53], [54], [56] [2018-09-19 11:36:10,542 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 11:36:10,542 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:36:10,590 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-19 11:36:10,590 INFO L272 AbstractInterpreter]: Visited 16 different actions 36 times. Merged at 3 different actions 15 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-09-19 11:36:10,616 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 11:36:10,631 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-19 11:36:10,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 11:36:10 BoogieIcfgContainer [2018-09-19 11:36:10,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 11:36:10,633 INFO L168 Benchmark]: Toolchain (without parser) took 1596.59 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 695.7 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -701.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 11:36:10,635 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 11:36:10,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-19 11:36:10,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.35 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 11:36:10,637 INFO L168 Benchmark]: Boogie Preprocessor took 36.50 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 11:36:10,637 INFO L168 Benchmark]: RCFGBuilder took 541.96 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 695.7 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -746.1 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-09-19 11:36:10,638 INFO L168 Benchmark]: TraceAbstraction took 729.36 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 7.1 GB. [2018-09-19 11:36:10,643 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 256.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 25.35 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.50 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 541.96 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 695.7 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -746.1 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 729.36 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L10] int A[1024]; [L11] int i; [L13] i = 0 [L13] COND TRUE i < 1024 [L14] A[i] = __VERIFIER_nondet_int() [L13] i++ [L13] i++ [L13] COND FALSE !(i < 1024) [L17] i = 0 [L17] COND FALSE !(A[i] != 0) [L22] CALL __VERIFIER_assert(i <= 1024) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. UNKNOWN Result, 0.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 5 SDslu, 10 SDs, 0 SdLazy, 14 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.4166666666666667 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/array_true-unreach-call3_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_11-36-10-656.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/array_true-unreach-call3_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_11-36-10-656.csv Received shutdown request...