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_OCT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-lit/mcmillan2006_true-unreach-call_true-termination.c.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 17:20:30,283 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 17:20:30,287 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 17:20:30,301 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 17:20:30,302 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 17:20:30,303 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 17:20:30,304 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 17:20:30,306 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 17:20:30,309 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 17:20:30,310 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 17:20:30,311 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 17:20:30,312 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 17:20:30,313 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 17:20:30,317 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 17:20:30,318 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 17:20:30,320 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 17:20:30,321 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 17:20:30,324 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 17:20:30,330 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 17:20:30,333 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 17:20:30,336 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 17:20:30,337 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 17:20:30,340 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 17:20:30,340 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 17:20:30,340 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 17:20:30,344 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 17:20:30,345 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 17:20:30,345 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 17:20:30,346 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 17:20:30,348 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 17:20:30,348 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 17:20:30,349 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-15 17:20:30,354 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf [2018-09-15 17:20:30,385 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 17:20:30,385 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 17:20:30,386 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 17:20:30,387 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 17:20:30,387 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 17:20:30,388 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 17:20:30,388 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 17:20:30,388 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 17:20:30,388 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-15 17:20:30,388 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 17:20:30,389 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 17:20:30,389 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 17:20:30,390 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 17:20:30,390 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 17:20:30,390 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 17:20:30,391 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 17:20:30,391 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 17:20:30,391 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 17:20:30,391 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 17:20:30,391 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 17:20:30,393 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 17:20:30,393 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 17:20:30,394 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 17:20:30,394 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 17:20:30,394 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 17:20:30,394 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 17:20:30,394 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 17:20:30,395 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 17:20:30,395 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 17:20:30,395 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 17:20:30,395 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 17:20:30,395 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 17:20:30,395 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 17:20:30,396 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 17:20:30,449 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 17:20:30,465 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 17:20:30,473 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 17:20:30,475 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 17:20:30,476 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 17:20:30,476 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/mcmillan2006_true-unreach-call_true-termination.c.i [2018-09-15 17:20:30,839 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8788d42b/5e883d5811e949e88a84c327dec6cad0/FLAG673a25225 [2018-09-15 17:20:31,018 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 17:20:31,019 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/mcmillan2006_true-unreach-call_true-termination.c.i [2018-09-15 17:20:31,026 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8788d42b/5e883d5811e949e88a84c327dec6cad0/FLAG673a25225 [2018-09-15 17:20:31,042 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8788d42b/5e883d5811e949e88a84c327dec6cad0 [2018-09-15 17:20:31,054 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 17:20:31,058 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 17:20:31,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 17:20:31,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 17:20:31,066 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 17:20:31,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 05:20:31" (1/1) ... [2018-09-15 17:20:31,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b8402d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:31, skipping insertion in model container [2018-09-15 17:20:31,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 05:20:31" (1/1) ... [2018-09-15 17:20:31,083 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 17:20:31,300 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 17:20:31,331 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 17:20:31,341 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 17:20:31,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:31 WrapperNode [2018-09-15 17:20:31,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 17:20:31,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 17:20:31,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 17:20:31,364 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 17:20:31,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:31" (1/1) ... [2018-09-15 17:20:31,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:31" (1/1) ... [2018-09-15 17:20:31,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 17:20:31,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 17:20:31,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 17:20:31,414 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 17:20:31,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:31" (1/1) ... [2018-09-15 17:20:31,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:31" (1/1) ... [2018-09-15 17:20:31,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:31" (1/1) ... [2018-09-15 17:20:31,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:31" (1/1) ... [2018-09-15 17:20:31,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:31" (1/1) ... [2018-09-15 17:20:31,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:31" (1/1) ... [2018-09-15 17:20:31,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:31" (1/1) ... [2018-09-15 17:20:31,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 17:20:31,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 17:20:31,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 17:20:31,457 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 17:20:31,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:31" (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 17:20:31,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 17:20:31,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 17:20:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 17:20:31,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 17:20:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 17:20:31,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 17:20:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 17:20:31,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 17:20:32,047 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 17:20:32,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 05:20:32 BoogieIcfgContainer [2018-09-15 17:20:32,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 17:20:32,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 17:20:32,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 17:20:32,053 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 17:20:32,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 05:20:31" (1/3) ... [2018-09-15 17:20:32,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e581f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 05:20:32, skipping insertion in model container [2018-09-15 17:20:32,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:31" (2/3) ... [2018-09-15 17:20:32,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e581f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 05:20:32, skipping insertion in model container [2018-09-15 17:20:32,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 05:20:32" (3/3) ... [2018-09-15 17:20:32,057 INFO L112 eAbstractionObserver]: Analyzing ICFG mcmillan2006_true-unreach-call_true-termination.c.i [2018-09-15 17:20:32,068 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 17:20:32,078 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 17:20:32,133 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 17:20:32,133 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 17:20:32,134 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 17:20:32,134 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 17:20:32,134 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 17:20:32,134 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 17:20:32,134 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 17:20:32,134 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 17:20:32,135 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 17:20:32,154 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-09-15 17:20:32,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-15 17:20:32,161 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:32,162 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:32,164 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:32,169 INFO L82 PathProgramCache]: Analyzing trace with hash 235483989, now seen corresponding path program 1 times [2018-09-15 17:20:32,172 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:32,173 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-09-15 17:20:32,176 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [22], [24], [28], [33], [43], [46], [48], [54], [55], [56], [58] [2018-09-15 17:20:32,233 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:32,234 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:32,371 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:32,373 INFO L272 AbstractInterpreter]: Visited 8 different actions 8 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-09-15 17:20:32,384 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:32,515 INFO L232 lantSequenceWeakener]: Weakened 7 states. On average, predicates are now at 93.85% of their original sizes. [2018-09-15 17:20:32,516 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:32,604 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:32,607 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:32,607 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-15 17:20:32,608 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:32,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-15 17:20:32,618 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-15 17:20:32,618 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 17:20:32,620 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2018-09-15 17:20:32,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:32,759 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-09-15 17:20:32,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-15 17:20:32,761 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-09-15 17:20:32,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:32,769 INFO L225 Difference]: With dead ends: 46 [2018-09-15 17:20:32,769 INFO L226 Difference]: Without dead ends: 22 [2018-09-15 17:20:32,773 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 14 GetRequests, 12 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 17:20:32,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-09-15 17:20:32,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-09-15 17:20:32,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-15 17:20:32,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-09-15 17:20:32,814 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2018-09-15 17:20:32,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:32,814 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-09-15 17:20:32,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-15 17:20:32,816 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-09-15 17:20:32,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-15 17:20:32,817 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:32,817 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:32,818 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:32,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1613839314, now seen corresponding path program 1 times [2018-09-15 17:20:32,819 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:32,819 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-09-15 17:20:32,821 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [16], [24], [28], [33], [43], [46], [48], [54], [55], [56], [58] [2018-09-15 17:20:32,826 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:32,826 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:32,876 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:32,877 INFO L272 AbstractInterpreter]: Visited 12 different actions 12 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-09-15 17:20:32,917 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:33,016 INFO L232 lantSequenceWeakener]: Weakened 11 states. On average, predicates are now at 85.29% of their original sizes. [2018-09-15 17:20:33,018 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:33,353 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:33,359 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:33,360 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 17:20:33,360 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:33,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 17:20:33,361 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 17:20:33,361 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 17:20:33,362 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2018-09-15 17:20:33,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:33,803 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-09-15 17:20:33,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 17:20:33,805 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-09-15 17:20:33,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:33,806 INFO L225 Difference]: With dead ends: 39 [2018-09-15 17:20:33,806 INFO L226 Difference]: Without dead ends: 25 [2018-09-15 17:20:33,808 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-09-15 17:20:33,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-09-15 17:20:33,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-09-15 17:20:33,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-15 17:20:33,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-09-15 17:20:33,817 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 16 [2018-09-15 17:20:33,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:33,817 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-09-15 17:20:33,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 17:20:33,818 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-09-15 17:20:33,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-15 17:20:33,819 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:33,819 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:33,819 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:33,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1557204615, now seen corresponding path program 1 times [2018-09-15 17:20:33,820 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:33,820 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-09-15 17:20:33,820 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [16], [18], [20], [24], [28], [33], [43], [46], [48], [54], [55], [56], [58] [2018-09-15 17:20:33,822 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:33,823 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:34,168 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 17:20:34,169 INFO L272 AbstractInterpreter]: Visited 18 different actions 91 times. Merged at 7 different actions 48 times. Widened at 2 different actions 6 times. Found 1 fixpoints after 1 different actions. Largest state had 34 variables. [2018-09-15 17:20:34,201 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 17:20:34,221 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 17:20:34,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 05:20:34 BoogieIcfgContainer [2018-09-15 17:20:34,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 17:20:34,222 INFO L168 Benchmark]: Toolchain (without parser) took 3167.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -510.1 MB). Peak memory consumption was 230.2 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:34,226 INFO L168 Benchmark]: CDTParser took 0.20 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 17:20:34,227 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.62 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 17:20:34,228 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.37 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 17:20:34,229 INFO L168 Benchmark]: Boogie Preprocessor took 42.20 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 17:20:34,230 INFO L168 Benchmark]: RCFGBuilder took 592.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -787.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:34,231 INFO L168 Benchmark]: TraceAbstraction took 2172.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 266.8 MB). Peak memory consumption was 266.8 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:34,236 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 303.62 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 50.37 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 42.20 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 592.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -787.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2172.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 266.8 MB). Peak memory consumption was 266.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: 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: [L13] int n = __VERIFIER_nondet_int(); [L14] COND FALSE !(!(0 <= n && n <= 1000)) [L15] EXPR, FCALL malloc(n * sizeof(int)) [L15] int *x = malloc(n * sizeof(int)); [L16] int i = 0; [L16] COND TRUE i < n [L16] CALL x[i] = 0 [L16] RET x[i] = 0 [L16] i++ [L16] i++ [L16] COND FALSE !(i < n) [L17] int i = 0; [L17] COND TRUE i < n [L17] CALL, EXPR x[i] [L17] RET, EXPR x[i] [L17] CALL __VERIFIER_assert(x[i] == 0) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. UNKNOWN Result, 2.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 43 SDslu, 58 SDs, 0 SdLazy, 27 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.6s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9517241379310346 AbsIntWeakeningRatio, 1.4482758620689655 AbsIntAvgWeakeningVarsNumRemoved, 7.103448275862069 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 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/mcmillan2006_true-unreach-call_true-termination.c.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_17-20-34-249.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/mcmillan2006_true-unreach-call_true-termination.c.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_17-20-34-249.csv Received shutdown request...