java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call4_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 01:29:08,932 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 01:29:08,934 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 01:29:08,948 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 01:29:08,948 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 01:29:08,950 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 01:29:08,955 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 01:29:08,957 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 01:29:08,959 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 01:29:08,960 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 01:29:08,961 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 01:29:08,961 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 01:29:08,962 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 01:29:08,963 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 01:29:08,964 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 01:29:08,965 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 01:29:08,966 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 01:29:08,968 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 01:29:08,970 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 01:29:08,972 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 01:29:08,973 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 01:29:08,974 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 01:29:08,977 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-19 01:29:08,986 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf [2018-09-19 01:29:09,015 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 01:29:09,016 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 01:29:09,017 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 01:29:09,017 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 01:29:09,017 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 01:29:09,018 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 01:29:09,018 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 01:29:09,018 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-19 01:29:09,018 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 01:29:09,018 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 01:29:09,019 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 01:29:09,019 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 01:29:09,020 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 01:29:09,020 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 01:29:09,020 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 01:29:09,020 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 01:29:09,021 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 01:29:09,021 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 01:29:09,021 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 01:29:09,021 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 01:29:09,021 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 01:29:09,022 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 01:29:09,022 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 01:29:09,022 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 01:29:09,022 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 01:29:09,022 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 01:29:09,023 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 01:29:09,023 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 01:29:09,023 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 01:29:09,023 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 01:29:09,023 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 01:29:09,024 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 01:29:09,024 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 01:29:09,024 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 01:29:09,086 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 01:29:09,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 01:29:09,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 01:29:09,110 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 01:29:09,110 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 01:29:09,111 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call4_true-termination.i [2018-09-19 01:29:09,484 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d641b5e55/cfabc0cfa50d44098e3d817f286fb7ba/FLAG62abd2601 [2018-09-19 01:29:09,666 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 01:29:09,666 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_true-unreach-call4_true-termination.i [2018-09-19 01:29:09,672 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d641b5e55/cfabc0cfa50d44098e3d817f286fb7ba/FLAG62abd2601 [2018-09-19 01:29:09,699 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d641b5e55/cfabc0cfa50d44098e3d817f286fb7ba [2018-09-19 01:29:09,716 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 01:29:09,722 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 01:29:09,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 01:29:09,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 01:29:09,735 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 01:29:09,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 01:29:09" (1/1) ... [2018-09-19 01:29:09,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56aae051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:09, skipping insertion in model container [2018-09-19 01:29:09,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 01:29:09" (1/1) ... [2018-09-19 01:29:09,752 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 01:29:09,956 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 01:29:09,974 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 01:29:09,980 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 01:29:09,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:09 WrapperNode [2018-09-19 01:29:09,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 01:29:09,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 01:29:09,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 01:29:09,995 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 01:29:10,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:09" (1/1) ... [2018-09-19 01:29:10,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:09" (1/1) ... [2018-09-19 01:29:10,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 01:29:10,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 01:29:10,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 01:29:10,021 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 01:29:10,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:09" (1/1) ... [2018-09-19 01:29:10,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:09" (1/1) ... [2018-09-19 01:29:10,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:09" (1/1) ... [2018-09-19 01:29:10,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:09" (1/1) ... [2018-09-19 01:29:10,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:09" (1/1) ... [2018-09-19 01:29:10,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:09" (1/1) ... [2018-09-19 01:29:10,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:09" (1/1) ... [2018-09-19 01:29:10,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 01:29:10,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 01:29:10,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 01:29:10,044 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 01:29:10,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 01:29:10,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 01:29:10,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 01:29:10,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 01:29:10,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 01:29:10,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 01:29:10,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 01:29:10,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 01:29:10,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 01:29:10,596 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 01:29:10,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 01:29:10 BoogieIcfgContainer [2018-09-19 01:29:10,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 01:29:10,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 01:29:10,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 01:29:10,602 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 01:29:10,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 01:29:09" (1/3) ... [2018-09-19 01:29:10,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c779b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 01:29:10, skipping insertion in model container [2018-09-19 01:29:10,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:09" (2/3) ... [2018-09-19 01:29:10,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c779b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 01:29:10, skipping insertion in model container [2018-09-19 01:29:10,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 01:29:10" (3/3) ... [2018-09-19 01:29:10,606 INFO L112 eAbstractionObserver]: Analyzing ICFG array_true-unreach-call4_true-termination.i [2018-09-19 01:29:10,619 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 01:29:10,629 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 01:29:10,688 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 01:29:10,689 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 01:29:10,689 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 01:29:10,690 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 01:29:10,690 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 01:29:10,690 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 01:29:10,690 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 01:29:10,691 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 01:29:10,691 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 01:29:10,714 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-09-19 01:29:10,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-19 01:29:10,729 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:10,730 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 01:29:10,734 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:10,748 INFO L82 PathProgramCache]: Analyzing trace with hash -871089760, now seen corresponding path program 1 times [2018-09-19 01:29:10,753 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:10,754 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-09-19 01:29:10,760 INFO L202 CegarAbsIntRunner]: [0], [4], [17], [19], [32], [36], [39], [41], [47], [48], [49], [51] [2018-09-19 01:29:10,821 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:10,821 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:10,898 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 01:29:10,900 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-19 01:29:10,929 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 01:29:10,980 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 100% of their original sizes. [2018-09-19 01:29:10,981 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 01:29:10,984 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 01:29:10,985 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 01:29:10,986 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 01:29:10,986 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 01:29:10,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 01:29:11,000 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 01:29:11,001 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 01:29:11,004 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2018-09-19 01:29:11,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 01:29:11,029 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2018-09-19 01:29:11,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 01:29:11,031 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-09-19 01:29:11,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 01:29:11,040 INFO L225 Difference]: With dead ends: 38 [2018-09-19 01:29:11,040 INFO L226 Difference]: Without dead ends: 17 [2018-09-19 01:29:11,044 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 11 GetRequests, 11 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 01:29:11,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-09-19 01:29:11,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-09-19 01:29:11,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-19 01:29:11,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-09-19 01:29:11,086 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2018-09-19 01:29:11,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 01:29:11,087 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-09-19 01:29:11,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 01:29:11,087 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-09-19 01:29:11,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-19 01:29:11,088 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:11,089 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 01:29:11,089 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:11,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1032139915, now seen corresponding path program 1 times [2018-09-19 01:29:11,090 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:11,090 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-19 01:29:11,090 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [19], [23], [26], [36], [39], [41], [47], [48], [49], [51] [2018-09-19 01:29:11,092 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:11,092 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:11,104 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 01:29:11,104 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-19 01:29:11,132 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 01:29:11,148 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-19 01:29:11,151 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 01:29:11,159 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 01:29:11,160 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 01:29:11,160 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 01:29:11,160 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 01:29:11,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 01:29:11,161 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 01:29:11,162 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 01:29:11,162 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 3 states. [2018-09-19 01:29:11,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 01:29:11,263 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-09-19 01:29:11,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 01:29:11,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-09-19 01:29:11,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 01:29:11,266 INFO L225 Difference]: With dead ends: 33 [2018-09-19 01:29:11,266 INFO L226 Difference]: Without dead ends: 24 [2018-09-19 01:29:11,268 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 01:29:11,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-19 01:29:11,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2018-09-19 01:29:11,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-19 01:29:11,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-09-19 01:29:11,275 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2018-09-19 01:29:11,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 01:29:11,275 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-09-19 01:29:11,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 01:29:11,276 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-09-19 01:29:11,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-19 01:29:11,276 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:11,277 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 01:29:11,277 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:11,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1366720179, now seen corresponding path program 1 times [2018-09-19 01:29:11,278 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:11,278 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-09-19 01:29:11,278 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [13], [15], [19], [23], [26], [36], [39], [41], [47], [48], [49], [51] [2018-09-19 01:29:11,280 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:11,280 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:11,347 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 01:29:11,348 INFO L272 AbstractInterpreter]: Visited 15 different actions 43 times. Merged at 3 different actions 21 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-09-19 01:29:11,355 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 01:29:11,393 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 75% of their original sizes. [2018-09-19 01:29:11,393 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 01:29:11,535 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 01:29:11,535 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 01:29:11,536 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-19 01:29:11,536 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 01:29:11,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-19 01:29:11,537 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-19 01:29:11,537 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-19 01:29:11,537 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 7 states. [2018-09-19 01:29:11,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 01:29:11,793 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2018-09-19 01:29:11,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-19 01:29:11,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-09-19 01:29:11,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 01:29:11,794 INFO L225 Difference]: With dead ends: 45 [2018-09-19 01:29:11,794 INFO L226 Difference]: Without dead ends: 31 [2018-09-19 01:29:11,795 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-19 01:29:11,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-19 01:29:11,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2018-09-19 01:29:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-09-19 01:29:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2018-09-19 01:29:11,802 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 17 [2018-09-19 01:29:11,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 01:29:11,803 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2018-09-19 01:29:11,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-19 01:29:11,803 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2018-09-19 01:29:11,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-19 01:29:11,804 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:11,804 INFO L376 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 01:29:11,805 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:11,807 INFO L82 PathProgramCache]: Analyzing trace with hash 895867088, now seen corresponding path program 1 times [2018-09-19 01:29:11,808 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:11,808 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 30 with the following transitions: [2018-09-19 01:29:11,808 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [13], [15], [19], [23], [26], [28], [30], [36], [39], [41], [47], [48], [49], [51] [2018-09-19 01:29:11,810 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:11,810 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:11,911 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-19 01:29:11,911 INFO L272 AbstractInterpreter]: Visited 18 different actions 141 times. Merged at 7 different actions 73 times. Widened at 2 different actions 12 times. Found 2 fixpoints after 2 different actions. Largest state had 5 variables. [2018-09-19 01:29:11,927 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 01:29:11,943 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-19 01:29:11,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 01:29:11 BoogieIcfgContainer [2018-09-19 01:29:11,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 01:29:11,945 INFO L168 Benchmark]: Toolchain (without parser) took 2228.43 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -735.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:11,947 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 01:29:11,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:11,949 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.61 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 01:29:11,949 INFO L168 Benchmark]: Boogie Preprocessor took 23.45 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 01:29:11,950 INFO L168 Benchmark]: RCFGBuilder took 553.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -801.3 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:11,951 INFO L168 Benchmark]: TraceAbstraction took 1345.55 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: 55.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:11,955 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 269.74 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 25.61 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 23.45 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 553.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -801.3 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1345.55 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: 55.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L11] int A[1024]; [L12] int i; [L14] i = 0 [L14] COND TRUE i < 1024-1 [L15] A[i] = __VERIFIER_nondet_int() [L14] i++ [L14] i++ [L14] COND TRUE i < 1024-1 [L15] A[i] = __VERIFIER_nondet_int() [L14] i++ [L14] i++ [L14] COND FALSE !(i < 1024-1) [L18] A[1024 -1] = 0 [L19] i = 0 [L19] COND TRUE A[i] != 0 [L19] i++ [L19] i++ [L19] COND TRUE A[i] != 0 [L19] i++ [L19] i++ [L19] COND TRUE A[i] != 0 [L19] i++ [L19] i++ [L19] COND FALSE !(A[i] != 0) [L21] CALL __VERIFIER_assert(i <= 1024) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. UNKNOWN Result, 1.2s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 48 SDtfs, 29 SDslu, 42 SDs, 0 SdLazy, 48 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.81875 AbsIntWeakeningRatio, 0.4 AbsIntAvgWeakeningVarsNumRemoved, 0.25 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/array_true-unreach-call4_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_01-29-11-969.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/array_true-unreach-call4_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_01-29-11-969.csv Received shutdown request...