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-acceleration/phases_true-unreach-call2_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 17:20:04,640 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 17:20:04,642 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 17:20:04,655 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 17:20:04,655 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 17:20:04,656 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 17:20:04,658 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 17:20:04,660 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 17:20:04,662 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 17:20:04,663 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 17:20:04,664 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 17:20:04,664 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 17:20:04,665 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 17:20:04,666 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 17:20:04,667 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 17:20:04,668 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 17:20:04,669 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 17:20:04,671 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 17:20:04,673 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 17:20:04,675 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 17:20:04,676 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 17:20:04,677 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 17:20:04,680 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-15 17:20:04,690 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 17:20:04,715 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 17:20:04,716 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 17:20:04,717 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 17:20:04,717 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 17:20:04,717 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 17:20:04,717 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 17:20:04,718 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 17:20:04,718 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 17:20:04,718 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-15 17:20:04,718 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 17:20:04,719 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 17:20:04,719 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 17:20:04,720 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 17:20:04,720 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 17:20:04,720 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 17:20:04,720 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 17:20:04,721 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 17:20:04,721 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 17:20:04,721 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 17:20:04,722 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 17:20:04,722 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 17:20:04,722 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 17:20:04,722 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 17:20:04,722 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 17:20:04,723 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 17:20:04,723 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 17:20:04,723 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 17:20:04,723 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 17:20:04,724 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 17:20:04,724 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 17:20:04,724 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 17:20:04,725 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 17:20:04,725 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 17:20:04,725 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 17:20:04,805 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 17:20:04,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 17:20:04,827 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 17:20:04,830 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 17:20:04,830 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 17:20:04,831 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_true-unreach-call2_false-termination.i [2018-09-15 17:20:05,212 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfacde924/0653365f9be1423e81830455c3459e8b/FLAG4e7ea37d7 [2018-09-15 17:20:05,370 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 17:20:05,371 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_true-unreach-call2_false-termination.i [2018-09-15 17:20:05,379 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfacde924/0653365f9be1423e81830455c3459e8b/FLAG4e7ea37d7 [2018-09-15 17:20:05,403 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfacde924/0653365f9be1423e81830455c3459e8b [2018-09-15 17:20:05,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 17:20:05,425 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 17:20:05,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 17:20:05,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 17:20:05,435 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 17:20:05,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 05:20:05" (1/1) ... [2018-09-15 17:20:05,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f1dc611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:05, skipping insertion in model container [2018-09-15 17:20:05,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 05:20:05" (1/1) ... [2018-09-15 17:20:05,454 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 17:20:05,675 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 17:20:05,692 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 17:20:05,697 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 17:20:05,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:05 WrapperNode [2018-09-15 17:20:05,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 17:20:05,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 17:20:05,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 17:20:05,712 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 17:20:05,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:05" (1/1) ... [2018-09-15 17:20:05,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:05" (1/1) ... [2018-09-15 17:20:05,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 17:20:05,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 17:20:05,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 17:20:05,738 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 17:20:05,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:05" (1/1) ... [2018-09-15 17:20:05,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:05" (1/1) ... [2018-09-15 17:20:05,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:05" (1/1) ... [2018-09-15 17:20:05,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:05" (1/1) ... [2018-09-15 17:20:05,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:05" (1/1) ... [2018-09-15 17:20:05,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:05" (1/1) ... [2018-09-15 17:20:05,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:05" (1/1) ... [2018-09-15 17:20:05,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 17:20:05,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 17:20:05,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 17:20:05,767 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 17:20:05,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 17:20:05,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 17:20:05,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 17:20:05,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 17:20:05,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 17:20:05,836 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 17:20:05,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 17:20:05,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 17:20:05,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 17:20:06,132 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 17:20:06,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 05:20:06 BoogieIcfgContainer [2018-09-15 17:20:06,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 17:20:06,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 17:20:06,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 17:20:06,138 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 17:20:06,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 05:20:05" (1/3) ... [2018-09-15 17:20:06,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9fc88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 05:20:06, skipping insertion in model container [2018-09-15 17:20:06,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:05" (2/3) ... [2018-09-15 17:20:06,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9fc88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 05:20:06, skipping insertion in model container [2018-09-15 17:20:06,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 05:20:06" (3/3) ... [2018-09-15 17:20:06,143 INFO L112 eAbstractionObserver]: Analyzing ICFG phases_true-unreach-call2_false-termination.i [2018-09-15 17:20:06,173 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 17:20:06,202 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 17:20:06,280 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 17:20:06,281 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 17:20:06,281 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 17:20:06,281 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 17:20:06,281 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 17:20:06,281 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 17:20:06,282 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 17:20:06,282 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 17:20:06,282 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 17:20:06,303 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-09-15 17:20:06,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-15 17:20:06,311 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:06,312 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:06,313 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:06,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1994259344, now seen corresponding path program 1 times [2018-09-15 17:20:06,320 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:06,321 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-09-15 17:20:06,323 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [26], [30], [33], [35], [41], [42], [43], [45] [2018-09-15 17:20:06,370 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:06,370 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:06,439 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 17:20:06,443 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:06,444 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 3 variables. [2018-09-15 17:20:06,478 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:06,523 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-15 17:20:06,524 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:06,536 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:06,538 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:06,538 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-15 17:20:06,538 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:06,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-15 17:20:06,550 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-15 17:20:06,551 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 17:20:06,554 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2018-09-15 17:20:06,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:06,691 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2018-09-15 17:20:06,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-15 17:20:06,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-15 17:20:06,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:06,703 INFO L225 Difference]: With dead ends: 37 [2018-09-15 17:20:06,703 INFO L226 Difference]: Without dead ends: 18 [2018-09-15 17:20:06,708 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 17:20:06,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-15 17:20:06,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2018-09-15 17:20:06,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-15 17:20:06,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-09-15 17:20:06,743 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2018-09-15 17:20:06,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:06,744 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-09-15 17:20:06,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-15 17:20:06,744 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-09-15 17:20:06,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-15 17:20:06,745 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:06,745 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:06,747 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:06,747 INFO L82 PathProgramCache]: Analyzing trace with hash -2119643788, now seen corresponding path program 1 times [2018-09-15 17:20:06,748 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:06,748 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-09-15 17:20:06,748 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [30], [33], [35], [41], [42], [43], [45] [2018-09-15 17:20:06,750 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:06,751 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:06,753 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 17:20:06,770 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 17:20:06,770 INFO L272 AbstractInterpreter]: Visited 12 different actions 12 times. Never merged. Never widened. Never found a fixpoint. Largest state had 3 variables. [2018-09-15 17:20:06,788 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 17:20:06,804 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 17:20:06,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 05:20:06 BoogieIcfgContainer [2018-09-15 17:20:06,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 17:20:06,806 INFO L168 Benchmark]: Toolchain (without parser) took 1383.69 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.0 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -731.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 17:20:06,808 INFO L168 Benchmark]: CDTParser took 0.21 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 17:20:06,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.79 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 17:20:06,810 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.32 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 17:20:06,811 INFO L168 Benchmark]: Boogie Preprocessor took 28.53 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 17:20:06,812 INFO L168 Benchmark]: RCFGBuilder took 366.22 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -772.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:06,814 INFO L168 Benchmark]: TraceAbstraction took 671.67 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:06,819 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 25.32 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 28.53 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 366.22 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -772.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 671.67 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 30.6 MB). Peak memory consumption was 30.6 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: [L11] unsigned int x = 1; [L12] unsigned int y = __VERIFIER_nondet_uint(); [L13] COND FALSE !(!(y > 0)) [L14] COND FALSE !(x < y) [L21] CALL __VERIFIER_assert(x == y) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. UNKNOWN Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 5 SDslu, 15 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.4 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 4 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/phases_true-unreach-call2_false-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_17-20-06-834.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/phases_true-unreach-call2_false-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_17-20-06-834.csv Received shutdown request...