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_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-acceleration/nested_true-unreach-call1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 01:29:12,489 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 01:29:12,491 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 01:29:12,510 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 01:29:12,511 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 01:29:12,512 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 01:29:12,513 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 01:29:12,515 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 01:29:12,517 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 01:29:12,520 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 01:29:12,522 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 01:29:12,522 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 01:29:12,523 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 01:29:12,525 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 01:29:12,532 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 01:29:12,533 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 01:29:12,534 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 01:29:12,539 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 01:29:12,544 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 01:29:12,548 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 01:29:12,550 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 01:29:12,551 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 01:29:12,553 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-19 01:29:12,572 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf [2018-09-19 01:29:12,608 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 01:29:12,608 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 01:29:12,609 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 01:29:12,609 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 01:29:12,609 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 01:29:12,610 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 01:29:12,610 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 01:29:12,610 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-19 01:29:12,610 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 01:29:12,610 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 01:29:12,610 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 01:29:12,611 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 01:29:12,612 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 01:29:12,612 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 01:29:12,612 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 01:29:12,613 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 01:29:12,613 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 01:29:12,613 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 01:29:12,615 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 01:29:12,615 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 01:29:12,616 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 01:29:12,616 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 01:29:12,616 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 01:29:12,616 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 01:29:12,616 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 01:29:12,617 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 01:29:12,617 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 01:29:12,617 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 01:29:12,617 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 01:29:12,617 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 01:29:12,618 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 01:29:12,618 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 01:29:12,618 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 01:29:12,618 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 01:29:12,671 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 01:29:12,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 01:29:12,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 01:29:12,690 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 01:29:12,690 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 01:29:12,691 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/nested_true-unreach-call1.i [2018-09-19 01:29:13,030 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d475f8739/3365f53634e84245ad50d299ff030394/FLAGed4b8460b [2018-09-19 01:29:13,171 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 01:29:13,172 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/nested_true-unreach-call1.i [2018-09-19 01:29:13,179 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d475f8739/3365f53634e84245ad50d299ff030394/FLAGed4b8460b [2018-09-19 01:29:13,196 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d475f8739/3365f53634e84245ad50d299ff030394 [2018-09-19 01:29:13,207 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 01:29:13,211 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 01:29:13,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 01:29:13,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 01:29:13,219 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 01:29:13,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 01:29:13" (1/1) ... [2018-09-19 01:29:13,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58cdc2d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:13, skipping insertion in model container [2018-09-19 01:29:13,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 01:29:13" (1/1) ... [2018-09-19 01:29:13,237 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 01:29:13,439 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 01:29:13,456 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 01:29:13,461 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 01:29:13,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:13 WrapperNode [2018-09-19 01:29:13,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 01:29:13,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 01:29:13,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 01:29:13,477 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 01:29:13,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:13" (1/1) ... [2018-09-19 01:29:13,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:13" (1/1) ... [2018-09-19 01:29:13,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 01:29:13,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 01:29:13,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 01:29:13,498 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 01:29:13,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:13" (1/1) ... [2018-09-19 01:29:13,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:13" (1/1) ... [2018-09-19 01:29:13,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:13" (1/1) ... [2018-09-19 01:29:13,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:13" (1/1) ... [2018-09-19 01:29:13,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:13" (1/1) ... [2018-09-19 01:29:13,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:13" (1/1) ... [2018-09-19 01:29:13,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:13" (1/1) ... [2018-09-19 01:29:13,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 01:29:13,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 01:29:13,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 01:29:13,518 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 01:29:13,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 01:29:13,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 01:29:13,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 01:29:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 01:29:13,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 01:29:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 01:29:13,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 01:29:13,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 01:29:13,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 01:29:13,899 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 01:29:13,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 01:29:13 BoogieIcfgContainer [2018-09-19 01:29:13,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 01:29:13,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 01:29:13,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 01:29:13,905 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 01:29:13,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 01:29:13" (1/3) ... [2018-09-19 01:29:13,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3e66a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 01:29:13, skipping insertion in model container [2018-09-19 01:29:13,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:13" (2/3) ... [2018-09-19 01:29:13,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3e66a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 01:29:13, skipping insertion in model container [2018-09-19 01:29:13,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 01:29:13" (3/3) ... [2018-09-19 01:29:13,909 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_true-unreach-call1.i [2018-09-19 01:29:13,921 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 01:29:13,929 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 01:29:13,981 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 01:29:13,982 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 01:29:13,982 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 01:29:13,982 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 01:29:13,982 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 01:29:13,982 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 01:29:13,982 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 01:29:13,983 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 01:29:13,983 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 01:29:14,001 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-09-19 01:29:14,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-19 01:29:14,008 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:14,009 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 01:29:14,010 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:14,016 INFO L82 PathProgramCache]: Analyzing trace with hash -283544510, now seen corresponding path program 1 times [2018-09-19 01:29:14,019 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:14,020 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-09-19 01:29:14,022 INFO L202 CegarAbsIntRunner]: [0], [4], [30], [34], [37], [39], [45], [46], [47], [49] [2018-09-19 01:29:14,085 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:14,086 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:14,151 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 01:29:14,153 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-19 01:29:14,170 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 01:29:14,219 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-09-19 01:29:14,219 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 01:29:14,258 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 01:29:14,259 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 01:29:14,259 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 01:29:14,260 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 01:29:14,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 01:29:14,270 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 01:29:14,270 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 01:29:14,273 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2018-09-19 01:29:14,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 01:29:14,378 INFO L93 Difference]: Finished difference Result 42 states and 55 transitions. [2018-09-19 01:29:14,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 01:29:14,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-09-19 01:29:14,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 01:29:14,393 INFO L225 Difference]: With dead ends: 42 [2018-09-19 01:29:14,394 INFO L226 Difference]: Without dead ends: 20 [2018-09-19 01:29:14,400 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 01:29:14,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-09-19 01:29:14,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2018-09-19 01:29:14,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-19 01:29:14,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-09-19 01:29:14,471 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10 [2018-09-19 01:29:14,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 01:29:14,471 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-09-19 01:29:14,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 01:29:14,472 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-09-19 01:29:14,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-19 01:29:14,473 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:14,473 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 01:29:14,474 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:14,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1427803270, now seen corresponding path program 1 times [2018-09-19 01:29:14,474 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:14,476 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-09-19 01:29:14,476 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [18], [22], [28], [34], [37], [39], [45], [46], [47], [49] [2018-09-19 01:29:14,487 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:14,487 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:14,517 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 01:29:14,520 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 01:29:14,520 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Never found a fixpoint. Largest state had 3 variables. [2018-09-19 01:29:14,556 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 01:29:14,591 INFO L232 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 50% of their original sizes. [2018-09-19 01:29:14,592 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 01:29:14,620 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 01:29:14,620 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 01:29:14,620 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 01:29:14,620 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 01:29:14,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 01:29:14,622 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 01:29:14,622 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-19 01:29:14,622 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2018-09-19 01:29:14,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 01:29:14,701 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-09-19 01:29:14,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 01:29:14,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-09-19 01:29:14,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 01:29:14,703 INFO L225 Difference]: With dead ends: 32 [2018-09-19 01:29:14,703 INFO L226 Difference]: Without dead ends: 22 [2018-09-19 01:29:14,705 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-19 01:29:14,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-09-19 01:29:14,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2018-09-19 01:29:14,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-19 01:29:14,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-09-19 01:29:14,711 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2018-09-19 01:29:14,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 01:29:14,712 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-09-19 01:29:14,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 01:29:14,712 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-09-19 01:29:14,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-19 01:29:14,713 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:14,713 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 01:29:14,713 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:14,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1523179828, now seen corresponding path program 1 times [2018-09-19 01:29:14,714 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:14,714 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-09-19 01:29:14,714 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [18], [22], [24], [28], [34], [37], [39], [45], [46], [47], [49] [2018-09-19 01:29:14,717 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:14,718 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:14,722 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 01:29:15,460 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-19 01:29:15,460 INFO L272 AbstractInterpreter]: Visited 16 different actions 312 times. Merged at 7 different actions 163 times. Widened at 3 different actions 47 times. Found 29 fixpoints after 3 different actions. Largest state had 4 variables. [2018-09-19 01:29:15,502 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 01:29:15,521 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-19 01:29:15,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 01:29:15 BoogieIcfgContainer [2018-09-19 01:29:15,521 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 01:29:15,523 INFO L168 Benchmark]: Toolchain (without parser) took 2314.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -680.1 MB). Peak memory consumption was 66.5 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:15,526 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-09-19 01:29:15,527 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:15,528 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.74 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 01:29:15,528 INFO L168 Benchmark]: Boogie Preprocessor took 19.98 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 01:29:15,529 INFO L168 Benchmark]: RCFGBuilder took 382.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -789.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:15,531 INFO L168 Benchmark]: TraceAbstraction took 1620.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 98.9 MB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:15,539 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 264.52 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 20.74 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 19.98 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 382.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -789.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1620.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 98.9 MB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: 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: [L9] unsigned int x = 0; [L10] unsigned int y = 0; [L11] COND TRUE x < 0x0fffffff [L12] y = 0 [L13] COND TRUE y < 10 [L14] y++ [L14] y++ [L13] COND FALSE !(y < 10) [L16] x++ [L16] x++ [L11] COND FALSE !(x < 0x0fffffff) [L18] CALL __VERIFIER_assert(x % 2) [L3] COND TRUE !(cond) [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. UNKNOWN Result, 1.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 10 SDslu, 31 SDs, 0 SdLazy, 13 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 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, 1.0s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9861111111111112 AbsIntWeakeningRatio, 0.4166666666666667 AbsIntAvgWeakeningVarsNumRemoved, 1.4583333333333333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 6 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/nested_true-unreach-call1.i_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_01-29-15-559.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested_true-unreach-call1.i_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_01-29-15-559.csv Received shutdown request...