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/loop-acceleration/nested_true-unreach-call1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 15:47:44,907 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 15:47:44,909 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 15:47:44,927 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 15:47:44,927 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 15:47:44,928 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 15:47:44,931 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 15:47:44,933 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 15:47:44,935 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 15:47:44,936 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 15:47:44,938 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 15:47:44,938 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 15:47:44,939 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 15:47:44,940 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 15:47:44,941 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 15:47:44,942 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 15:47:44,943 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 15:47:44,945 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 15:47:44,947 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 15:47:44,948 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 15:47:44,950 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 15:47:44,951 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 15:47:44,954 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-15 15:47:44,970 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 15:47:45,003 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 15:47:45,003 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 15:47:45,004 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 15:47:45,004 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 15:47:45,004 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 15:47:45,005 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 15:47:45,005 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 15:47:45,005 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 15:47:45,005 INFO L133 SettingsManager]: * Abstract domain=CongruenceDomain [2018-09-15 15:47:45,005 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 15:47:45,006 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 15:47:45,006 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 15:47:45,006 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 15:47:45,007 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 15:47:45,007 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 15:47:45,007 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 15:47:45,007 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 15:47:45,007 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 15:47:45,008 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 15:47:45,008 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 15:47:45,008 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 15:47:45,008 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 15:47:45,008 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 15:47:45,009 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 15:47:45,009 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 15:47:45,009 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 15:47:45,009 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 15:47:45,009 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 15:47:45,010 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 15:47:45,010 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 15:47:45,010 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 15:47:45,010 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 15:47:45,010 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 15:47:45,011 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 15:47:45,072 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 15:47:45,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 15:47:45,092 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 15:47:45,093 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 15:47:45,094 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 15:47:45,094 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/nested_true-unreach-call1.i [2018-09-15 15:47:45,442 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05fef1b59/83d036fdf2c64d729f68b7ffe759ddcd/FLAGd1cfa9154 [2018-09-15 15:47:45,574 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 15:47:45,575 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/nested_true-unreach-call1.i [2018-09-15 15:47:45,581 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05fef1b59/83d036fdf2c64d729f68b7ffe759ddcd/FLAGd1cfa9154 [2018-09-15 15:47:45,596 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05fef1b59/83d036fdf2c64d729f68b7ffe759ddcd [2018-09-15 15:47:45,606 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 15:47:45,608 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 15:47:45,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 15:47:45,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 15:47:45,616 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 15:47:45,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164d8960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45, skipping insertion in model container [2018-09-15 15:47:45,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,633 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 15:47:45,868 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:47:45,887 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 15:47:45,894 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:47:45,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45 WrapperNode [2018-09-15 15:47:45,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 15:47:45,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 15:47:45,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 15:47:45,919 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 15:47:45,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 15:47:45,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 15:47:45,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 15:47:45,943 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 15:47:45,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (1/1) ... [2018-09-15 15:47:45,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 15:47:45,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 15:47:45,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 15:47:45,967 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 15:47:45,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (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 15:47:46,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 15:47:46,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 15:47:46,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 15:47:46,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 15:47:46,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 15:47:46,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 15:47:46,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 15:47:46,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 15:47:46,312 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 15:47:46,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:47:46 BoogieIcfgContainer [2018-09-15 15:47:46,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 15:47:46,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 15:47:46,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 15:47:46,318 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 15:47:46,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 03:47:45" (1/3) ... [2018-09-15 15:47:46,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414499de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:47:46, skipping insertion in model container [2018-09-15 15:47:46,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:45" (2/3) ... [2018-09-15 15:47:46,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414499de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:47:46, skipping insertion in model container [2018-09-15 15:47:46,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:47:46" (3/3) ... [2018-09-15 15:47:46,322 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_true-unreach-call1.i [2018-09-15 15:47:46,332 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 15:47:46,339 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 15:47:46,390 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 15:47:46,391 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 15:47:46,391 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 15:47:46,392 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 15:47:46,392 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 15:47:46,392 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 15:47:46,392 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 15:47:46,392 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 15:47:46,393 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 15:47:46,419 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-09-15 15:47:46,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-15 15:47:46,428 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:46,429 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:47:46,430 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:46,436 INFO L82 PathProgramCache]: Analyzing trace with hash -283544510, now seen corresponding path program 1 times [2018-09-15 15:47:46,439 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:46,439 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-09-15 15:47:46,441 INFO L202 CegarAbsIntRunner]: [0], [4], [30], [34], [37], [39], [45], [46], [47], [49] [2018-09-15 15:47:46,468 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:46,468 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:46,516 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:46,517 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-15 15:47:46,527 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:46,566 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-09-15 15:47:46,567 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:46,596 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:46,597 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:46,598 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-15 15:47:46,598 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:46,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-15 15:47:46,611 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-15 15:47:46,612 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 15:47:46,614 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2018-09-15 15:47:46,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:46,695 INFO L93 Difference]: Finished difference Result 42 states and 55 transitions. [2018-09-15 15:47:46,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-15 15:47:46,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-09-15 15:47:46,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:46,713 INFO L225 Difference]: With dead ends: 42 [2018-09-15 15:47:46,713 INFO L226 Difference]: Without dead ends: 20 [2018-09-15 15:47:46,718 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 9 GetRequests, 8 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 15:47:46,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-09-15 15:47:46,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2018-09-15 15:47:46,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-15 15:47:46,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-09-15 15:47:46,767 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10 [2018-09-15 15:47:46,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:46,768 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-09-15 15:47:46,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-15 15:47:46,768 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-09-15 15:47:46,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-15 15:47:46,770 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:46,770 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:47:46,770 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:46,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1427803270, now seen corresponding path program 1 times [2018-09-15 15:47:46,771 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:46,771 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-09-15 15:47:46,772 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [18], [22], [28], [34], [37], [39], [45], [46], [47], [49] [2018-09-15 15:47:46,773 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:46,773 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:46,802 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:46,802 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Never found a fixpoint. Largest state had 3 variables. [2018-09-15 15:47:46,824 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:46,837 INFO L232 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 50% of their original sizes. [2018-09-15 15:47:46,837 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:46,877 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:46,877 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:46,877 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-15 15:47:46,878 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:46,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-15 15:47:46,879 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-15 15:47:46,879 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 15:47:46,880 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2018-09-15 15:47:46,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:46,964 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-09-15 15:47:46,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-15 15:47:46,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-09-15 15:47:46,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:46,967 INFO L225 Difference]: With dead ends: 32 [2018-09-15 15:47:46,967 INFO L226 Difference]: Without dead ends: 22 [2018-09-15 15:47:46,968 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 15:47:46,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-09-15 15:47:46,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2018-09-15 15:47:46,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-15 15:47:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-09-15 15:47:46,974 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2018-09-15 15:47:46,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:46,975 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-09-15 15:47:46,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-15 15:47:46,975 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-09-15 15:47:46,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-15 15:47:46,976 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:46,976 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:47:46,977 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:46,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1523179828, now seen corresponding path program 1 times [2018-09-15 15:47:46,977 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:46,978 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-09-15 15:47:46,978 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [18], [22], [24], [28], [34], [37], [39], [45], [46], [47], [49] [2018-09-15 15:47:46,979 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:46,980 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:47,024 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 15:47:47,025 INFO L272 AbstractInterpreter]: Visited 16 different actions 35 times. Merged at 6 different actions 13 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 4 variables. [2018-09-15 15:47:47,032 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 15:47:47,047 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 15:47:47,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 03:47:47 BoogieIcfgContainer [2018-09-15 15:47:47,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 15:47:47,049 INFO L168 Benchmark]: Toolchain (without parser) took 1442.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -754.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 15:47:47,051 INFO L168 Benchmark]: CDTParser took 0.19 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 15:47:47,052 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.96 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 15:47:47,053 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.62 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 15:47:47,054 INFO L168 Benchmark]: Boogie Preprocessor took 23.33 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. [2018-09-15 15:47:47,054 INFO L168 Benchmark]: RCFGBuilder took 347.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.9 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-09-15 15:47:47,056 INFO L168 Benchmark]: TraceAbstraction took 733.44 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: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2018-09-15 15:47:47,061 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 308.96 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 23.62 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 23.33 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. * RCFGBuilder took 347.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.9 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 733.44 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: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: 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: [L9] unsigned int x = 0; [L10] unsigned int y = 0; [L11] COND TRUE x < 0x0fffffff [L12] y = 0 [L13] COND TRUE y < 10 [L14] y++ [L14] y++ [L13] COND FALSE !(y < 10) [L16] x++ [L16] x++ [L11] COND FALSE !(x < 0x0fffffff) [L18] CALL __VERIFIER_assert(x % 2) [L3] COND TRUE !(cond) [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. UNKNOWN Result, 0.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 10 SDslu, 31 SDs, 0 SdLazy, 13 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9791666666666666 AbsIntWeakeningRatio, 0.4166666666666667 AbsIntAvgWeakeningVarsNumRemoved, 0.20833333333333334 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 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/nested_true-unreach-call1.i_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_15-47-47-074.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested_true-unreach-call1.i_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_15-47-47-074.csv Received shutdown request...