java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf -i ../../../trunk/examples/svcomp/loops/matrix_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 15:47:30,612 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 15:47:30,614 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 15:47:30,627 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 15:47:30,627 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 15:47:30,628 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 15:47:30,630 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 15:47:30,632 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 15:47:30,634 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 15:47:30,635 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 15:47:30,636 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 15:47:30,636 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 15:47:30,637 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 15:47:30,639 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 15:47:30,640 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 15:47:30,641 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 15:47:30,642 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 15:47:30,644 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 15:47:30,646 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 15:47:30,647 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 15:47:30,649 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 15:47:30,650 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 15:47:30,656 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-15 15:47:30,668 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 15:47:30,669 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 15:47:30,672 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 15:47:30,673 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 15:47:30,673 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf [2018-09-15 15:47:30,707 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 15:47:30,707 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 15:47:30,708 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 15:47:30,708 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 15:47:30,709 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 15:47:30,709 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 15:47:30,709 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 15:47:30,709 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 15:47:30,710 INFO L133 SettingsManager]: * Abstract domain=CongruenceDomain [2018-09-15 15:47:30,710 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 15:47:30,710 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 15:47:30,710 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 15:47:30,711 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 15:47:30,712 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 15:47:30,712 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 15:47:30,712 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 15:47:30,712 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 15:47:30,712 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 15:47:30,713 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 15:47:30,713 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 15:47:30,713 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 15:47:30,713 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 15:47:30,715 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 15:47:30,715 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 15:47:30,716 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 15:47:30,716 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 15:47:30,716 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 15:47:30,716 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 15:47:30,717 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 15:47:30,717 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 15:47:30,717 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 15:47:30,717 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 15:47:30,718 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 15:47:30,718 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 15:47:30,788 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 15:47:30,802 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 15:47:30,806 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 15:47:30,807 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 15:47:30,808 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 15:47:30,809 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix_true-unreach-call_true-termination.i [2018-09-15 15:47:31,168 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61756757b/7432f9d8ec824b5086887dda6a91e784/FLAGaa288e4c1 [2018-09-15 15:47:31,323 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 15:47:31,324 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix_true-unreach-call_true-termination.i [2018-09-15 15:47:31,331 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61756757b/7432f9d8ec824b5086887dda6a91e784/FLAGaa288e4c1 [2018-09-15 15:47:31,345 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61756757b/7432f9d8ec824b5086887dda6a91e784 [2018-09-15 15:47:31,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 15:47:31,359 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 15:47:31,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 15:47:31,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 15:47:31,369 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 15:47:31,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@367f72fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31, skipping insertion in model container [2018-09-15 15:47:31,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,385 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 15:47:31,648 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:47:31,669 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 15:47:31,680 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:47:31,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31 WrapperNode [2018-09-15 15:47:31,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 15:47:31,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 15:47:31,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 15:47:31,699 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 15:47:31,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 15:47:31,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 15:47:31,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 15:47:31,726 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 15:47:31,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 15:47:31,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 15:47:31,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 15:47:31,775 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 15:47:31,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 15:47:31,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 15:47:31,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 15:47:31,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 15:47:31,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 15:47:31,853 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 15:47:31,853 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 15:47:31,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 15:47:31,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 15:47:32,180 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 15:47:32,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:47:32 BoogieIcfgContainer [2018-09-15 15:47:32,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 15:47:32,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 15:47:32,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 15:47:32,186 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 15:47:32,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 03:47:31" (1/3) ... [2018-09-15 15:47:32,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f51692d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:47:32, skipping insertion in model container [2018-09-15 15:47:32,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (2/3) ... [2018-09-15 15:47:32,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f51692d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:47:32, skipping insertion in model container [2018-09-15 15:47:32,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:47:32" (3/3) ... [2018-09-15 15:47:32,190 INFO L112 eAbstractionObserver]: Analyzing ICFG matrix_true-unreach-call_true-termination.i [2018-09-15 15:47:32,201 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 15:47:32,210 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 15:47:32,261 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 15:47:32,262 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 15:47:32,262 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 15:47:32,262 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 15:47:32,262 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 15:47:32,262 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 15:47:32,262 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 15:47:32,262 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 15:47:32,263 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 15:47:32,280 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-09-15 15:47:32,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-15 15:47:32,286 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:32,287 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:47:32,288 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:32,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1439158977, now seen corresponding path program 1 times [2018-09-15 15:47:32,296 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:32,297 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-09-15 15:47:32,299 INFO L202 CegarAbsIntRunner]: [0], [4], [35], [40], [43], [45], [51], [52], [53], [55] [2018-09-15 15:47:32,330 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:32,331 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:32,396 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:32,398 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 7 variables. [2018-09-15 15:47:32,442 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:32,513 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 100% of their original sizes. [2018-09-15 15:47:32,514 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:32,516 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:32,518 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:32,518 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-15 15:47:32,519 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:32,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-15 15:47:32,534 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-15 15:47:32,535 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-15 15:47:32,538 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2018-09-15 15:47:32,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:32,565 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2018-09-15 15:47:32,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-15 15:47:32,567 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-15 15:47:32,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:32,578 INFO L225 Difference]: With dead ends: 43 [2018-09-15 15:47:32,578 INFO L226 Difference]: Without dead ends: 17 [2018-09-15 15:47:32,584 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 9 GetRequests, 9 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 15:47:32,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-09-15 15:47:32,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-09-15 15:47:32,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-15 15:47:32,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-09-15 15:47:32,640 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2018-09-15 15:47:32,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:32,640 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-09-15 15:47:32,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-15 15:47:32,641 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-09-15 15:47:32,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-15 15:47:32,641 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:32,642 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:47:32,642 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:32,646 INFO L82 PathProgramCache]: Analyzing trace with hash 851077291, now seen corresponding path program 1 times [2018-09-15 15:47:32,646 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:32,646 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-09-15 15:47:32,647 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [40], [43], [45], [51], [52], [53], [55] [2018-09-15 15:47:32,649 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:32,649 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:32,654 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:32,657 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 7 variables. [2018-09-15 15:47:32,676 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:32,685 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 33.33% of their original sizes. [2018-09-15 15:47:32,686 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:32,692 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:32,692 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:32,692 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-15 15:47:32,693 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:32,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-15 15:47:32,696 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-15 15:47:32,696 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 15:47:32,696 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2018-09-15 15:47:32,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:32,780 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2018-09-15 15:47:32,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-15 15:47:32,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-15 15:47:32,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:32,781 INFO L225 Difference]: With dead ends: 29 [2018-09-15 15:47:32,781 INFO L226 Difference]: Without dead ends: 24 [2018-09-15 15:47:32,783 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 15:47:32,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-15 15:47:32,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2018-09-15 15:47:32,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-15 15:47:32,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-09-15 15:47:32,789 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2018-09-15 15:47:32,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:32,789 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-09-15 15:47:32,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-15 15:47:32,789 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-09-15 15:47:32,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-15 15:47:32,790 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:32,790 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:47:32,791 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:32,791 INFO L82 PathProgramCache]: Analyzing trace with hash -2034683942, now seen corresponding path program 1 times [2018-09-15 15:47:32,791 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:32,791 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-09-15 15:47:32,792 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [13], [17], [20], [33], [40], [43], [45], [51], [52], [53], [55] [2018-09-15 15:47:32,793 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:32,793 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:32,798 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:32,798 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Never found a fixpoint. Largest state had 8 variables. [2018-09-15 15:47:32,809 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:32,821 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 33.33% of their original sizes. [2018-09-15 15:47:32,822 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:32,857 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:32,858 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:32,858 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-15 15:47:32,858 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:32,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-15 15:47:32,859 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-15 15:47:32,859 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-15 15:47:32,859 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2018-09-15 15:47:32,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:32,998 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2018-09-15 15:47:33,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-15 15:47:33,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-09-15 15:47:33,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:33,001 INFO L225 Difference]: With dead ends: 40 [2018-09-15 15:47:33,001 INFO L226 Difference]: Without dead ends: 28 [2018-09-15 15:47:33,002 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-15 15:47:33,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-15 15:47:33,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2018-09-15 15:47:33,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-15 15:47:33,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-09-15 15:47:33,008 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2018-09-15 15:47:33,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:33,008 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-09-15 15:47:33,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-15 15:47:33,008 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-09-15 15:47:33,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-15 15:47:33,009 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:33,011 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:47:33,011 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:33,011 INFO L82 PathProgramCache]: Analyzing trace with hash 752117489, now seen corresponding path program 1 times [2018-09-15 15:47:33,013 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:33,014 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-09-15 15:47:33,014 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [13], [17], [20], [22], [25], [29], [33], [40], [43], [45], [51], [52], [53], [55] [2018-09-15 15:47:33,015 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:33,015 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:33,043 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 15:47:33,044 INFO L272 AbstractInterpreter]: Visited 18 different actions 24 times. Merged at 4 different actions 4 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 10 variables. [2018-09-15 15:47:33,056 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 15:47:33,074 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 15:47:33,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 03:47:33 BoogieIcfgContainer [2018-09-15 15:47:33,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 15:47:33,075 INFO L168 Benchmark]: Toolchain (without parser) took 1719.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -750.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2018-09-15 15:47:33,078 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. [2018-09-15 15:47:33,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-15 15:47:33,079 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.69 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 15:47:33,080 INFO L168 Benchmark]: Boogie Preprocessor took 48.11 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 15:47:33,081 INFO L168 Benchmark]: RCFGBuilder took 407.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -817.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-09-15 15:47:33,082 INFO L168 Benchmark]: TraceAbstraction took 892.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 56.6 MB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. [2018-09-15 15:47:33,087 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 338.30 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 26.69 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 48.11 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 407.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -817.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 892.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 56.6 MB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L13] unsigned int N_LIN=1; [L14] unsigned int N_COL=1; [L15] unsigned int j,k; [L16] int matriz[N_COL][N_LIN], maior; [L18] maior = __VERIFIER_nondet_int() [L19] j=0 [L19] COND TRUE j=maior [L25] maior = matriz[j][k] [L20] k++ [L20] k++ [L20] COND FALSE !(k