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_CON-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-lit/ddlm2013_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 15:47:58,456 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 15:47:58,458 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 15:47:58,470 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 15:47:58,470 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 15:47:58,471 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 15:47:58,473 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 15:47:58,475 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 15:47:58,476 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 15:47:58,477 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 15:47:58,478 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 15:47:58,479 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 15:47:58,480 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 15:47:58,481 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 15:47:58,482 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 15:47:58,483 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 15:47:58,484 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 15:47:58,486 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 15:47:58,488 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 15:47:58,490 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 15:47:58,491 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 15:47:58,493 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 15:47:58,495 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 15:47:58,496 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 15:47:58,496 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 15:47:58,497 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 15:47:58,498 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 15:47:58,499 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 15:47:58,500 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 15:47:58,501 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 15:47:58,502 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 15:47:58,502 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-15 15:47:58,503 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 15:47:58,503 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 15:47:58,504 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 15:47:58,505 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 15:47:58,505 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf [2018-09-15 15:47:58,522 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 15:47:58,522 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 15:47:58,523 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 15:47:58,523 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 15:47:58,523 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 15:47:58,524 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 15:47:58,524 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 15:47:58,524 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 15:47:58,524 INFO L133 SettingsManager]: * Abstract domain=CongruenceDomain [2018-09-15 15:47:58,524 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 15:47:58,524 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 15:47:58,525 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 15:47:58,525 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 15:47:58,526 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 15:47:58,526 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 15:47:58,526 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 15:47:58,526 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 15:47:58,526 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 15:47:58,527 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 15:47:58,527 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 15:47:58,527 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 15:47:58,527 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 15:47:58,528 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 15:47:58,528 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 15:47:58,528 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 15:47:58,528 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 15:47:58,528 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 15:47:58,529 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 15:47:58,529 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 15:47:58,529 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 15:47:58,529 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 15:47:58,529 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 15:47:58,530 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 15:47:58,530 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 15:47:58,594 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 15:47:58,614 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 15:47:58,622 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 15:47:58,623 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 15:47:58,624 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 15:47:58,626 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013_true-unreach-call.i [2018-09-15 15:47:58,970 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04d21e3c8/0d7ef1c0eec448589fad52632497f86c/FLAG4f800dde2 [2018-09-15 15:47:59,144 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 15:47:59,145 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/ddlm2013_true-unreach-call.i [2018-09-15 15:47:59,154 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04d21e3c8/0d7ef1c0eec448589fad52632497f86c/FLAG4f800dde2 [2018-09-15 15:47:59,179 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04d21e3c8/0d7ef1c0eec448589fad52632497f86c [2018-09-15 15:47:59,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 15:47:59,198 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 15:47:59,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 15:47:59,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 15:47:59,210 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 15:47:59,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:47:59" (1/1) ... [2018-09-15 15:47:59,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@476c5996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:59, skipping insertion in model container [2018-09-15 15:47:59,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:47:59" (1/1) ... [2018-09-15 15:47:59,230 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 15:47:59,436 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:47:59,453 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 15:47:59,460 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:47:59,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:59 WrapperNode [2018-09-15 15:47:59,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 15:47:59,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 15:47:59,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 15:47:59,475 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 15:47:59,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:59" (1/1) ... [2018-09-15 15:47:59,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:59" (1/1) ... [2018-09-15 15:47:59,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 15:47:59,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 15:47:59,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 15:47:59,499 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 15:47:59,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:59" (1/1) ... [2018-09-15 15:47:59,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:59" (1/1) ... [2018-09-15 15:47:59,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:59" (1/1) ... [2018-09-15 15:47:59,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:59" (1/1) ... [2018-09-15 15:47:59,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:59" (1/1) ... [2018-09-15 15:47:59,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:59" (1/1) ... [2018-09-15 15:47:59,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:59" (1/1) ... [2018-09-15 15:47:59,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 15:47:59,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 15:47:59,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 15:47:59,522 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 15:47:59,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:59" (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 15:47:59,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 15:47:59,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 15:47:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 15:47:59,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 15:47:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 15:47:59,595 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 15:47:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 15:47:59,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 15:48:00,022 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 15:48:00,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:48:00 BoogieIcfgContainer [2018-09-15 15:48:00,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 15:48:00,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 15:48:00,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 15:48:00,027 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 15:48:00,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 03:47:59" (1/3) ... [2018-09-15 15:48:00,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f00fb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:48:00, skipping insertion in model container [2018-09-15 15:48:00,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:59" (2/3) ... [2018-09-15 15:48:00,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f00fb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:48:00, skipping insertion in model container [2018-09-15 15:48:00,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:48:00" (3/3) ... [2018-09-15 15:48:00,031 INFO L112 eAbstractionObserver]: Analyzing ICFG ddlm2013_true-unreach-call.i [2018-09-15 15:48:00,041 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 15:48:00,056 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 15:48:00,105 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 15:48:00,105 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 15:48:00,106 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 15:48:00,106 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 15:48:00,106 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 15:48:00,106 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 15:48:00,106 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 15:48:00,106 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 15:48:00,107 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 15:48:00,135 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-09-15 15:48:00,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-15 15:48:00,143 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:48:00,144 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:48:00,146 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:48:00,154 INFO L82 PathProgramCache]: Analyzing trace with hash 2066841578, now seen corresponding path program 1 times [2018-09-15 15:48:00,157 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:48:00,158 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-09-15 15:48:00,160 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [28], [32], [39], [42], [44], [50], [51], [52], [54] [2018-09-15 15:48:00,198 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:48:00,199 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:48:00,261 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:48:00,263 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 6 variables. [2018-09-15 15:48:00,303 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:48:00,343 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 36.67% of their original sizes. [2018-09-15 15:48:00,343 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:48:00,371 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:48:00,372 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:48:00,373 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-15 15:48:00,373 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:48:00,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-15 15:48:00,391 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-15 15:48:00,394 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 15:48:00,397 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2018-09-15 15:48:00,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:48:00,507 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2018-09-15 15:48:00,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-15 15:48:00,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-09-15 15:48:00,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:48:00,518 INFO L225 Difference]: With dead ends: 51 [2018-09-15 15:48:00,518 INFO L226 Difference]: Without dead ends: 25 [2018-09-15 15:48:00,522 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 15:48:00,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-09-15 15:48:00,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2018-09-15 15:48:00,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-09-15 15:48:00,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-09-15 15:48:00,564 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2018-09-15 15:48:00,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:48:00,565 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-09-15 15:48:00,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-15 15:48:00,565 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-09-15 15:48:00,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-15 15:48:00,566 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:48:00,567 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:48:00,567 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:48:00,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1651906282, now seen corresponding path program 1 times [2018-09-15 15:48:00,568 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:48:00,568 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-15 15:48:00,568 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [13], [15], [18], [32], [39], [42], [44], [50], [51], [52], [54] [2018-09-15 15:48:00,569 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:48:00,570 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:48:00,582 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:48:00,582 INFO L272 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Never found a fixpoint. Largest state had 7 variables. [2018-09-15 15:48:00,598 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:48:00,615 INFO L232 lantSequenceWeakener]: Weakened 7 states. On average, predicates are now at 43.33% of their original sizes. [2018-09-15 15:48:00,616 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:48:00,674 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:48:00,674 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:48:00,674 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 15:48:00,675 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:48:00,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 15:48:00,676 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 15:48:00,678 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-09-15 15:48:00,678 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2018-09-15 15:48:00,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:48:00,752 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-09-15 15:48:00,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 15:48:00,752 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-09-15 15:48:00,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:48:00,753 INFO L225 Difference]: With dead ends: 29 [2018-09-15 15:48:00,754 INFO L226 Difference]: Without dead ends: 22 [2018-09-15 15:48:00,756 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-15 15:48:00,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-09-15 15:48:00,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2018-09-15 15:48:00,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-15 15:48:00,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-09-15 15:48:00,761 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 14 [2018-09-15 15:48:00,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:48:00,762 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-09-15 15:48:00,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 15:48:00,762 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-09-15 15:48:00,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-15 15:48:00,763 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:48:00,763 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:48:00,763 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:48:00,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1973708347, now seen corresponding path program 1 times [2018-09-15 15:48:00,764 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:48:00,764 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-09-15 15:48:00,765 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [13], [15], [18], [20], [23], [32], [39], [42], [44], [50], [51], [52], [54] [2018-09-15 15:48:00,766 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:48:00,766 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:48:00,818 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 15:48:00,818 INFO L272 AbstractInterpreter]: Visited 16 different actions 44 times. Merged at 6 different actions 18 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-09-15 15:48:00,843 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 15:48:00,863 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 15:48:00,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 03:48:00 BoogieIcfgContainer [2018-09-15 15:48:00,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 15:48:00,865 INFO L168 Benchmark]: Toolchain (without parser) took 1670.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -758.9 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2018-09-15 15:48:00,867 INFO L168 Benchmark]: CDTParser took 0.25 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 15:48:00,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.67 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 15:48:00,869 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.13 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 15:48:00,869 INFO L168 Benchmark]: Boogie Preprocessor took 22.50 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. [2018-09-15 15:48:00,870 INFO L168 Benchmark]: RCFGBuilder took 500.83 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.4 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2018-09-15 15:48:00,871 INFO L168 Benchmark]: TraceAbstraction took 840.45 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: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. [2018-09-15 15:48:00,875 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 274.67 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 24.13 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 22.50 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 500.83 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.4 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 840.45 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: 43.0 MB). Peak memory consumption was 43.0 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] unsigned int i,j,a,b; [L12] int flag = __VERIFIER_nondet_int(); [L13] a = 0 [L14] b = 0 [L15] j = 1 [L16] COND TRUE \read(flag) [L17] i = 0 [L21] COND TRUE __VERIFIER_nondet_int() [L22] a++ [L22] a++ [L23] b += (j - i) [L24] i += 2 [L25] COND TRUE i%2 == 0 [L26] j += 2 [L21] COND FALSE !(__VERIFIER_nondet_int()) [L31] COND TRUE \read(flag) [L32] CALL __VERIFIER_assert(a == b) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. UNKNOWN Result, 0.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 30 SDslu, 72 SDs, 0 SdLazy, 21 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 0.9222222222222224 AbsIntWeakeningRatio, 0.6666666666666666 AbsIntAvgWeakeningVarsNumRemoved, 0.6666666666666666 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 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/ddlm2013_true-unreach-call.i_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_15-48-00-899.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/ddlm2013_true-unreach-call.i_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_15-48-00-899.csv Received shutdown request...