java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf -i ../../../trunk/examples/svcomp/loops/sum_array_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 21:03:34,721 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 21:03:34,724 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 21:03:34,736 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 21:03:34,737 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 21:03:34,738 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 21:03:34,739 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 21:03:34,741 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 21:03:34,743 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 21:03:34,744 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 21:03:34,745 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 21:03:34,745 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 21:03:34,746 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 21:03:34,747 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 21:03:34,748 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 21:03:34,749 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 21:03:34,750 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 21:03:34,752 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 21:03:34,754 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 21:03:34,756 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 21:03:34,757 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 21:03:34,758 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 21:03:34,761 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 21:03:34,761 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 21:03:34,761 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 21:03:34,762 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 21:03:34,763 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 21:03:34,765 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 21:03:34,766 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 21:03:34,767 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 21:03:34,767 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 21:03:34,768 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-15 21:03:34,773 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf [2018-09-15 21:03:34,802 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 21:03:34,803 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 21:03:34,803 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 21:03:34,804 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 21:03:34,804 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 21:03:34,804 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 21:03:34,804 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 21:03:34,804 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 21:03:34,805 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-15 21:03:34,805 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 21:03:34,805 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 21:03:34,806 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 21:03:34,806 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 21:03:34,806 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 21:03:34,806 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 21:03:34,806 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 21:03:34,807 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 21:03:34,807 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 21:03:34,807 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 21:03:34,807 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 21:03:34,807 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 21:03:34,808 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 21:03:34,808 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 21:03:34,808 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 21:03:34,808 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 21:03:34,808 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 21:03:34,809 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 21:03:34,809 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 21:03:34,809 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 21:03:34,809 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 21:03:34,809 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 21:03:34,810 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 21:03:34,810 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 21:03:34,868 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 21:03:34,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 21:03:34,886 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 21:03:34,887 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 21:03:34,888 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 21:03:34,889 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array_true-unreach-call.i [2018-09-15 21:03:35,252 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/738e11c65/043affd63de343938e8f13608ec35a5b/FLAG7941f404f [2018-09-15 21:03:35,440 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 21:03:35,441 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array_true-unreach-call.i [2018-09-15 21:03:35,447 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/738e11c65/043affd63de343938e8f13608ec35a5b/FLAG7941f404f [2018-09-15 21:03:35,464 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/738e11c65/043affd63de343938e8f13608ec35a5b [2018-09-15 21:03:35,476 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 21:03:35,480 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 21:03:35,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 21:03:35,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 21:03:35,489 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 21:03:35,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f57d78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35, skipping insertion in model container [2018-09-15 21:03:35,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,507 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 21:03:35,692 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 21:03:35,711 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 21:03:35,721 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 21:03:35,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35 WrapperNode [2018-09-15 21:03:35,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 21:03:35,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 21:03:35,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 21:03:35,738 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 21:03:35,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 21:03:35,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 21:03:35,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 21:03:35,764 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 21:03:35,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (1/1) ... [2018-09-15 21:03:35,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 21:03:35,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 21:03:35,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 21:03:35,792 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 21:03:35,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 21:03:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 21:03:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 21:03:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 21:03:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 21:03:35,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 21:03:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 21:03:35,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 21:03:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 21:03:36,531 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 21:03:36,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 09:03:36 BoogieIcfgContainer [2018-09-15 21:03:36,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 21:03:36,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 21:03:36,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 21:03:36,537 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 21:03:36,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 09:03:35" (1/3) ... [2018-09-15 21:03:36,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d87a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 09:03:36, skipping insertion in model container [2018-09-15 21:03:36,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:03:35" (2/3) ... [2018-09-15 21:03:36,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d87a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 09:03:36, skipping insertion in model container [2018-09-15 21:03:36,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 09:03:36" (3/3) ... [2018-09-15 21:03:36,541 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_array_true-unreach-call.i [2018-09-15 21:03:36,551 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 21:03:36,560 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 21:03:36,613 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 21:03:36,613 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 21:03:36,614 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 21:03:36,614 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 21:03:36,614 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 21:03:36,614 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 21:03:36,615 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 21:03:36,615 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 21:03:36,615 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 21:03:36,636 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-09-15 21:03:36,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-15 21:03:36,648 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 21:03:36,649 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 21:03:36,651 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 21:03:36,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1047757685, now seen corresponding path program 1 times [2018-09-15 21:03:36,659 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 21:03:36,660 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-09-15 21:03:36,662 INFO L202 CegarAbsIntRunner]: [0], [4], [21], [23], [40], [42], [55], [57], [61], [66], [74], [77], [79], [85], [86], [87], [89] [2018-09-15 21:03:36,696 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-15 21:03:36,697 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 21:03:36,768 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 21:03:36,769 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 6 variables. [2018-09-15 21:03:36,789 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 21:03:36,835 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 100% of their original sizes. [2018-09-15 21:03:36,835 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 21:03:36,838 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 21:03:36,840 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 21:03:36,840 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-15 21:03:36,840 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 21:03:36,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-15 21:03:36,850 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-15 21:03:36,850 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-15 21:03:36,852 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2018-09-15 21:03:36,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 21:03:36,873 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2018-09-15 21:03:36,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-15 21:03:36,874 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-09-15 21:03:36,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 21:03:36,882 INFO L225 Difference]: With dead ends: 57 [2018-09-15 21:03:36,882 INFO L226 Difference]: Without dead ends: 29 [2018-09-15 21:03:36,885 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-15 21:03:36,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-09-15 21:03:36,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-09-15 21:03:36,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-15 21:03:36,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2018-09-15 21:03:36,924 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 17 [2018-09-15 21:03:36,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 21:03:36,925 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2018-09-15 21:03:36,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-15 21:03:36,925 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2018-09-15 21:03:36,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-15 21:03:36,926 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 21:03:36,927 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 21:03:36,927 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 21:03:36,927 INFO L82 PathProgramCache]: Analyzing trace with hash -274496668, now seen corresponding path program 1 times [2018-09-15 21:03:36,928 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 21:03:36,928 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-09-15 21:03:36,928 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [23], [27], [30], [42], [46], [49], [57], [61], [66], [74], [77], [79], [85], [86], [87], [89] [2018-09-15 21:03:36,930 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-15 21:03:36,930 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 21:03:36,944 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 21:03:36,962 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 21:03:36,962 INFO L272 AbstractInterpreter]: Visited 20 different actions 20 times. Never merged. Never widened. Never found a fixpoint. Largest state had 6 variables. [2018-09-15 21:03:36,997 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 21:03:37,019 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 21:03:37,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 09:03:37 BoogieIcfgContainer [2018-09-15 21:03:37,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 21:03:37,021 INFO L168 Benchmark]: Toolchain (without parser) took 1543.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -758.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 21:03:37,025 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 21:03:37,025 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-15 21:03:37,026 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.75 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 21:03:37,027 INFO L168 Benchmark]: Boogie Preprocessor took 25.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 21:03:37,028 INFO L168 Benchmark]: RCFGBuilder took 740.85 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -799.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-09-15 21:03:37,029 INFO L168 Benchmark]: TraceAbstraction took 486.77 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: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2018-09-15 21:03:37,033 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 255.28 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 25.75 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 25.16 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 740.85 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -799.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 486.77 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: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L13] unsigned int M = __VERIFIER_nondet_uint(); [L14] int A[M], B[M], C[M]; [L15] unsigned int i; [L16] i=0 [L16] COND FALSE !(i