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-new/gauss_sum_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 21:04:04,292 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 21:04:04,294 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 21:04:04,312 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 21:04:04,312 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 21:04:04,313 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 21:04:04,315 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 21:04:04,317 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 21:04:04,320 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 21:04:04,321 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 21:04:04,329 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 21:04:04,329 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 21:04:04,330 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 21:04:04,336 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 21:04:04,338 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 21:04:04,339 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 21:04:04,340 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 21:04:04,343 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 21:04:04,347 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 21:04:04,349 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 21:04:04,350 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 21:04:04,351 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 21:04:04,353 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 21:04:04,354 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 21:04:04,354 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 21:04:04,355 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 21:04:04,356 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 21:04:04,357 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 21:04:04,358 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 21:04:04,359 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 21:04:04,359 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 21:04:04,360 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-15 21:04:04,360 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 21:04:04,360 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 21:04:04,361 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 21:04:04,362 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 21:04:04,362 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 [2018-09-15 21:04:04,378 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 21:04:04,378 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 21:04:04,379 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 21:04:04,379 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 21:04:04,379 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 21:04:04,380 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 21:04:04,380 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 21:04:04,380 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 21:04:04,380 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-15 21:04:04,381 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 21:04:04,381 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 21:04:04,382 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 21:04:04,382 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 21:04:04,382 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 21:04:04,382 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 21:04:04,382 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 21:04:04,383 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 21:04:04,383 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 21:04:04,383 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 21:04:04,383 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 21:04:04,383 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 21:04:04,384 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 21:04:04,384 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 21:04:04,384 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 21:04:04,384 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 21:04:04,385 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 21:04:04,385 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 21:04:04,385 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 21:04:04,385 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 21:04:04,386 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 21:04:04,386 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 21:04:04,386 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 21:04:04,386 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 21:04:04,431 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 21:04:04,444 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 21:04:04,448 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 21:04:04,450 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 21:04:04,451 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 21:04:04,452 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call_true-termination.i [2018-09-15 21:04:04,830 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/746846bfe/1b7ec6135ed5453c862869ad6f87ea86/FLAG5b984dd83 [2018-09-15 21:04:05,015 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 21:04:05,016 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call_true-termination.i [2018-09-15 21:04:05,023 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/746846bfe/1b7ec6135ed5453c862869ad6f87ea86/FLAG5b984dd83 [2018-09-15 21:04:05,041 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/746846bfe/1b7ec6135ed5453c862869ad6f87ea86 [2018-09-15 21:04:05,053 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 21:04:05,058 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 21:04:05,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 21:04:05,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 21:04:05,068 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 21:04:05,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 09:04:05" (1/1) ... [2018-09-15 21:04:05,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@572233bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:04:05, skipping insertion in model container [2018-09-15 21:04:05,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 09:04:05" (1/1) ... [2018-09-15 21:04:05,084 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 21:04:05,297 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 21:04:05,318 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 21:04:05,325 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 21:04:05,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:04:05 WrapperNode [2018-09-15 21:04:05,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 21:04:05,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 21:04:05,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 21:04:05,344 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 21:04:05,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:04:05" (1/1) ... [2018-09-15 21:04:05,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:04:05" (1/1) ... [2018-09-15 21:04:05,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 21:04:05,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 21:04:05,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 21:04:05,371 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 21:04:05,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:04:05" (1/1) ... [2018-09-15 21:04:05,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:04:05" (1/1) ... [2018-09-15 21:04:05,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:04:05" (1/1) ... [2018-09-15 21:04:05,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:04:05" (1/1) ... [2018-09-15 21:04:05,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:04:05" (1/1) ... [2018-09-15 21:04:05,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:04:05" (1/1) ... [2018-09-15 21:04:05,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:04:05" (1/1) ... [2018-09-15 21:04:05,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 21:04:05,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 21:04:05,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 21:04:05,396 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 21:04:05,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:04:05" (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 [2018-09-15 21:04:05,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 21:04:05,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 21:04:05,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 21:04:05,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 21:04:05,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 21:04:05,479 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 21:04:05,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 21:04:05,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 21:04:05,846 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 21:04:05,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 09:04:05 BoogieIcfgContainer [2018-09-15 21:04:05,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 21:04:05,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 21:04:05,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 21:04:05,852 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 21:04:05,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 09:04:05" (1/3) ... [2018-09-15 21:04:05,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38edd47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 09:04:05, skipping insertion in model container [2018-09-15 21:04:05,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:04:05" (2/3) ... [2018-09-15 21:04:05,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38edd47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 09:04:05, skipping insertion in model container [2018-09-15 21:04:05,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 09:04:05" (3/3) ... [2018-09-15 21:04:05,855 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum_true-unreach-call_true-termination.i [2018-09-15 21:04:05,866 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 21:04:05,874 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 21:04:05,970 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 21:04:05,971 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 21:04:05,971 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 21:04:05,971 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 21:04:05,972 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 21:04:05,972 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 21:04:05,972 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 21:04:05,972 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 21:04:05,979 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 21:04:06,007 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-09-15 21:04:06,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-15 21:04:06,014 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 21:04:06,015 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 21:04:06,016 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 21:04:06,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1152414567, now seen corresponding path program 1 times [2018-09-15 21:04:06,025 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 21:04:06,026 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-09-15 21:04:06,028 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [21], [26], [29], [31], [37], [38], [39], [41] [2018-09-15 21:04:06,067 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-15 21:04:06,067 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 21:04:06,159 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 21:04:06,160 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 4 variables. [2018-09-15 21:04:06,210 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 21:04:06,277 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 33.33% of their original sizes. [2018-09-15 21:04:06,277 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 21:04:06,304 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 21:04:06,305 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 21:04:06,306 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-15 21:04:06,306 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 21:04:06,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-15 21:04:06,317 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-15 21:04:06,317 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 21:04:06,320 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2018-09-15 21:04:06,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 21:04:06,418 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2018-09-15 21:04:06,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-15 21:04:06,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-09-15 21:04:06,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 21:04:06,429 INFO L225 Difference]: With dead ends: 39 [2018-09-15 21:04:06,430 INFO L226 Difference]: Without dead ends: 17 [2018-09-15 21:04:06,434 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 21:04:06,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-09-15 21:04:06,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2018-09-15 21:04:06,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-15 21:04:06,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-09-15 21:04:06,472 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-09-15 21:04:06,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 21:04:06,472 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-09-15 21:04:06,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-15 21:04:06,473 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-09-15 21:04:06,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-15 21:04:06,473 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 21:04:06,474 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 21:04:06,474 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 21:04:06,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1083883255, now seen corresponding path program 1 times [2018-09-15 21:04:06,475 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 21:04:06,475 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-09-15 21:04:06,475 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [15], [26], [29], [31], [37], [38], [39], [41] [2018-09-15 21:04:06,477 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-15 21:04:06,477 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 21:04:06,487 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 21:04:06,487 INFO L272 AbstractInterpreter]: Visited 8 different actions 8 times. Never merged. Never widened. Never found a fixpoint. Largest state had 4 variables. [2018-09-15 21:04:06,498 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 21:04:06,518 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-15 21:04:06,519 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 21:04:06,563 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 21:04:06,564 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 21:04:06,564 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-15 21:04:06,564 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 21:04:06,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-15 21:04:06,565 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-15 21:04:06,566 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 21:04:06,566 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 4 states. [2018-09-15 21:04:06,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 21:04:06,608 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-15 21:04:06,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-15 21:04:06,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-09-15 21:04:06,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 21:04:06,609 INFO L225 Difference]: With dead ends: 21 [2018-09-15 21:04:06,609 INFO L226 Difference]: Without dead ends: 16 [2018-09-15 21:04:06,611 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 21:04:06,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-15 21:04:06,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-09-15 21:04:06,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-09-15 21:04:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-09-15 21:04:06,616 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2018-09-15 21:04:06,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 21:04:06,617 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-09-15 21:04:06,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-15 21:04:06,617 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-09-15 21:04:06,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-15 21:04:06,618 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 21:04:06,618 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 21:04:06,619 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 21:04:06,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1128913667, now seen corresponding path program 1 times [2018-09-15 21:04:06,619 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 21:04:06,619 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-09-15 21:04:06,620 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [15], [17], [19], [26], [29], [31], [37], [38], [39], [41] [2018-09-15 21:04:06,621 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-15 21:04:06,621 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 21:04:06,746 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 21:04:06,746 INFO L272 AbstractInterpreter]: Visited 14 different actions 66 times. Merged at 4 different actions 27 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-09-15 21:04:06,759 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 21:04:06,775 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 21:04:06,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 09:04:06 BoogieIcfgContainer [2018-09-15 21:04:06,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 21:04:06,776 INFO L168 Benchmark]: Toolchain (without parser) took 1723.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -749.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 21:04:06,778 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 21:04:06,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.36 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. [2018-09-15 21:04:06,780 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.92 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. [2018-09-15 21:04:06,781 INFO L168 Benchmark]: Boogie Preprocessor took 24.59 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. [2018-09-15 21:04:06,781 INFO L168 Benchmark]: RCFGBuilder took 451.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -793.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-09-15 21:04:06,782 INFO L168 Benchmark]: TraceAbstraction took 927.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 33.7 MB). Peak memory consumption was 33.7 MB. Max. memory is 7.1 GB. [2018-09-15 21:04:06,787 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 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 283.36 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 26.92 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 24.59 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 451.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -793.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 927.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 33.7 MB). Peak memory consumption was 33.7 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: [L11] int n, sum, i; [L12] n = __VERIFIER_nondet_int() [L13] COND FALSE !(!(1 <= n && n <= 1000)) [L14] sum = 0 [L15] i = 1 [L15] COND TRUE i <= n [L16] sum = sum + i [L15] i++ [L15] i++ [L15] COND FALSE !(i <= n) [L18] CALL __VERIFIER_assert(2*sum == n*(n+1)) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. UNKNOWN Result, 0.8s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 32 SDtfs, 18 SDslu, 39 SDs, 0 SdLazy, 16 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.8095238095238095 AbsIntWeakeningRatio, 0.6666666666666666 AbsIntAvgWeakeningVarsNumRemoved, 0.047619047619047616 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/gauss_sum_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_21-04-06-801.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/gauss_sum_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_21-04-06-801.csv Received shutdown request...