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 0.1.23-69f5bdd-m [2018-09-19 06:50:49,872 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 06:50:49,874 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 06:50:49,887 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 06:50:49,887 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 06:50:49,888 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 06:50:49,890 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 06:50:49,891 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 06:50:49,893 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 06:50:49,894 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 06:50:49,895 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 06:50:49,895 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 06:50:49,896 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 06:50:49,897 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 06:50:49,898 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 06:50:49,899 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 06:50:49,900 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 06:50:49,902 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 06:50:49,904 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 06:50:49,905 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 06:50:49,906 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 06:50:49,907 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 06:50:49,910 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-19 06:50:49,918 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 [2018-09-19 06:50:49,946 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 06:50:49,947 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 06:50:49,948 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 06:50:49,949 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 06:50:49,949 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 06:50:49,949 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 06:50:49,949 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 06:50:49,949 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-19 06:50:49,950 INFO L133 SettingsManager]: * Abstract domain=CongruenceDomain [2018-09-19 06:50:49,950 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 06:50:49,950 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 06:50:49,950 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 06:50:49,951 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 06:50:49,951 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 06:50:49,952 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 06:50:49,952 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 06:50:49,952 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 06:50:49,954 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 06:50:49,954 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 06:50:49,954 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 06:50:49,954 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 06:50:49,955 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 06:50:49,955 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 06:50:49,955 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 06:50:49,955 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 06:50:49,956 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 06:50:49,956 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 06:50:49,956 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 06:50:49,956 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 06:50:49,957 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 06:50:49,957 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 06:50:49,957 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 06:50:49,957 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 06:50:49,957 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 06:50:49,957 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 06:50:50,010 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 06:50:50,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 06:50:50,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 06:50:50,029 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 06:50:50,029 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 06:50:50,030 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix_true-unreach-call_true-termination.i [2018-09-19 06:50:50,408 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acbfe476a/f2e1f7daab4043fd8bc44ec58f5e1df7/FLAG39b3dab00 [2018-09-19 06:50:50,583 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 06:50:50,584 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix_true-unreach-call_true-termination.i [2018-09-19 06:50:50,590 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acbfe476a/f2e1f7daab4043fd8bc44ec58f5e1df7/FLAG39b3dab00 [2018-09-19 06:50:50,611 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acbfe476a/f2e1f7daab4043fd8bc44ec58f5e1df7 [2018-09-19 06:50:50,624 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 06:50:50,627 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 06:50:50,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 06:50:50,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 06:50:50,636 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 06:50:50,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 06:50:50" (1/1) ... [2018-09-19 06:50:50,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@474e9d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:50:50, skipping insertion in model container [2018-09-19 06:50:50,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 06:50:50" (1/1) ... [2018-09-19 06:50:50,653 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 06:50:50,866 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 06:50:50,884 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 06:50:50,896 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 06:50:50,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:50:50 WrapperNode [2018-09-19 06:50:50,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 06:50:50,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 06:50:50,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 06:50:50,910 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 06:50:50,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:50:50" (1/1) ... [2018-09-19 06:50:50,927 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:50:50" (1/1) ... [2018-09-19 06:50:50,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 06:50:50,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 06:50:50,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 06:50:50,935 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 06:50:50,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:50:50" (1/1) ... [2018-09-19 06:50:50,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:50:50" (1/1) ... [2018-09-19 06:50:50,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:50:50" (1/1) ... [2018-09-19 06:50:50,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:50:50" (1/1) ... [2018-09-19 06:50:50,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:50:50" (1/1) ... [2018-09-19 06:50:50,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:50:50" (1/1) ... [2018-09-19 06:50:50,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:50:50" (1/1) ... [2018-09-19 06:50:50,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 06:50:50,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 06:50:50,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 06:50:50,975 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 06:50:50,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:50:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 06:50:51,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 06:50:51,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 06:50:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 06:50:51,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 06:50:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 06:50:51,056 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 06:50:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 06:50:51,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 06:50:51,458 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 06:50:51,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 06:50:51 BoogieIcfgContainer [2018-09-19 06:50:51,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 06:50:51,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 06:50:51,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 06:50:51,464 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 06:50:51,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 06:50:50" (1/3) ... [2018-09-19 06:50:51,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9adfa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 06:50:51, skipping insertion in model container [2018-09-19 06:50:51,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 06:50:50" (2/3) ... [2018-09-19 06:50:51,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9adfa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 06:50:51, skipping insertion in model container [2018-09-19 06:50:51,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 06:50:51" (3/3) ... [2018-09-19 06:50:51,468 INFO L112 eAbstractionObserver]: Analyzing ICFG matrix_true-unreach-call_true-termination.i [2018-09-19 06:50:51,479 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 06:50:51,487 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 06:50:51,536 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 06:50:51,537 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 06:50:51,537 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 06:50:51,537 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 06:50:51,537 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 06:50:51,537 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 06:50:51,538 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 06:50:51,538 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 06:50:51,538 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 06:50:51,559 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-09-19 06:50:51,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-19 06:50:51,566 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 06:50:51,567 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 06:50:51,568 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 06:50:51,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1439158977, now seen corresponding path program 1 times [2018-09-19 06:50:51,577 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 06:50:51,578 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-09-19 06:50:51,580 INFO L202 CegarAbsIntRunner]: [0], [4], [35], [40], [43], [45], [51], [52], [53], [55] [2018-09-19 06:50:51,614 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-19 06:50:51,614 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 06:50:51,674 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 06:50:51,676 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 7 variables. [2018-09-19 06:50:51,692 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 06:50:51,730 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 100% of their original sizes. [2018-09-19 06:50:51,730 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 06:50:51,732 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 06:50:51,733 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 06:50:51,734 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 06:50:51,734 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 06:50:51,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 06:50:51,744 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 06:50:51,745 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 06:50:51,747 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2018-09-19 06:50:51,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 06:50:51,770 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2018-09-19 06:50:51,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 06:50:51,772 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-19 06:50:51,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 06:50:51,780 INFO L225 Difference]: With dead ends: 43 [2018-09-19 06:50:51,781 INFO L226 Difference]: Without dead ends: 17 [2018-09-19 06:50:51,785 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 [2018-09-19 06:50:51,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-09-19 06:50:51,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-09-19 06:50:51,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-19 06:50:51,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-09-19 06:50:51,826 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2018-09-19 06:50:51,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 06:50:51,826 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-09-19 06:50:51,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 06:50:51,827 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-09-19 06:50:51,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-19 06:50:51,828 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 06:50:51,828 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 06:50:51,828 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 06:50:51,829 INFO L82 PathProgramCache]: Analyzing trace with hash 851077291, now seen corresponding path program 1 times [2018-09-19 06:50:51,829 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 06:50:51,829 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-09-19 06:50:51,830 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [40], [43], [45], [51], [52], [53], [55] [2018-09-19 06:50:51,831 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-19 06:50:51,831 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 06:50:51,836 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 06:50:51,837 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 7 variables. [2018-09-19 06:50:51,840 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 06:50:51,849 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 33.33% of their original sizes. [2018-09-19 06:50:51,850 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 06:50:51,881 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 06:50:51,882 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 06:50:51,882 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 06:50:51,882 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 06:50:51,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 06:50:51,883 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 06:50:51,884 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 06:50:51,884 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2018-09-19 06:50:51,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 06:50:51,968 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2018-09-19 06:50:51,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 06:50:51,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-19 06:50:51,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 06:50:51,970 INFO L225 Difference]: With dead ends: 29 [2018-09-19 06:50:51,971 INFO L226 Difference]: Without dead ends: 24 [2018-09-19 06:50:51,972 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 [2018-09-19 06:50:51,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-19 06:50:51,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2018-09-19 06:50:51,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-19 06:50:51,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-09-19 06:50:51,979 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2018-09-19 06:50:51,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 06:50:51,979 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-09-19 06:50:51,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 06:50:51,979 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-09-19 06:50:51,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-19 06:50:51,980 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 06:50:51,980 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 06:50:51,981 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 06:50:51,981 INFO L82 PathProgramCache]: Analyzing trace with hash -2034683942, now seen corresponding path program 1 times [2018-09-19 06:50:51,981 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 06:50:51,981 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-09-19 06:50:51,982 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [13], [17], [20], [33], [40], [43], [45], [51], [52], [53], [55] [2018-09-19 06:50:51,983 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-19 06:50:51,983 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 06:50:51,988 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 06:50:51,988 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Never found a fixpoint. Largest state had 8 variables. [2018-09-19 06:50:51,998 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 06:50:52,011 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 33.33% of their original sizes. [2018-09-19 06:50:52,011 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 06:50:52,053 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 06:50:52,053 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 06:50:52,054 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-19 06:50:52,054 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 06:50:52,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-19 06:50:52,055 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-19 06:50:52,055 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-19 06:50:52,055 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2018-09-19 06:50:52,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 06:50:52,212 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2018-09-19 06:50:52,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 06:50:52,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-09-19 06:50:52,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 06:50:52,215 INFO L225 Difference]: With dead ends: 40 [2018-09-19 06:50:52,215 INFO L226 Difference]: Without dead ends: 28 [2018-09-19 06:50:52,216 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 [2018-09-19 06:50:52,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-19 06:50:52,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2018-09-19 06:50:52,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-19 06:50:52,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-09-19 06:50:52,222 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2018-09-19 06:50:52,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 06:50:52,222 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-09-19 06:50:52,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-19 06:50:52,223 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-09-19 06:50:52,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-19 06:50:52,223 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 06:50:52,224 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 06:50:52,224 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 06:50:52,224 INFO L82 PathProgramCache]: Analyzing trace with hash 752117489, now seen corresponding path program 1 times [2018-09-19 06:50:52,224 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 06:50:52,225 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-09-19 06:50:52,225 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [13], [17], [20], [22], [25], [29], [33], [40], [43], [45], [51], [52], [53], [55] [2018-09-19 06:50:52,226 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-19 06:50:52,226 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 06:50:52,247 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-19 06:50:52,248 INFO L272 AbstractInterpreter]: Visited 18 different actions 32 times. Merged at 8 different actions 11 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 10 variables. [2018-09-19 06:50:52,256 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 06:50:52,272 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-19 06:50:52,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 06:50:52 BoogieIcfgContainer [2018-09-19 06:50:52,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 06:50:52,273 INFO L168 Benchmark]: Toolchain (without parser) took 1649.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -731.9 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2018-09-19 06:50:52,275 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 06:50:52,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.30 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. [2018-09-19 06:50:52,277 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.33 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 06:50:52,277 INFO L168 Benchmark]: Boogie Preprocessor took 37.46 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 06:50:52,278 INFO L168 Benchmark]: RCFGBuilder took 484.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -789.5 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-09-19 06:50:52,279 INFO L168 Benchmark]: TraceAbstraction took 812.48 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: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. [2018-09-19 06:50:52,285 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 281.30 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 24.33 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 37.46 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 484.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -789.5 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 812.48 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: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [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