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_INT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-invgen/down_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 13:06:53,341 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 13:06:53,344 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 13:06:53,357 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 13:06:53,357 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 13:06:53,358 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 13:06:53,360 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 13:06:53,362 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 13:06:53,364 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 13:06:53,365 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 13:06:53,366 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 13:06:53,367 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 13:06:53,368 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 13:06:53,369 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 13:06:53,370 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 13:06:53,371 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 13:06:53,372 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 13:06:53,374 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 13:06:53,376 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 13:06:53,378 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 13:06:53,379 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 13:06:53,381 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 13:06:53,383 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-15 13:06:53,396 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf [2018-09-15 13:06:53,424 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 13:06:53,426 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 13:06:53,427 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 13:06:53,427 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 13:06:53,427 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 13:06:53,430 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 13:06:53,430 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 13:06:53,430 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 13:06:53,431 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 13:06:53,431 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-15 13:06:53,431 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 13:06:53,431 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 13:06:53,433 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 13:06:53,433 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 13:06:53,433 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 13:06:53,434 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 13:06:53,434 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 13:06:53,434 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 13:06:53,434 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 13:06:53,435 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 13:06:53,435 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 13:06:53,435 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 13:06:53,435 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 13:06:53,437 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 13:06:53,437 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 13:06:53,437 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 13:06:53,437 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 13:06:53,438 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 13:06:53,438 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 13:06:53,438 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 13:06:53,438 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 13:06:53,439 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 13:06:53,439 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 13:06:53,439 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 13:06:53,513 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 13:06:53,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 13:06:53,531 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 13:06:53,533 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 13:06:53,533 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 13:06:53,534 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/down_true-unreach-call_true-termination.i [2018-09-15 13:06:53,896 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b13bc9d2c/dea7964c53b444cf88c54ea8328086a2/FLAGaa0a8c46a [2018-09-15 13:06:54,055 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 13:06:54,055 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/down_true-unreach-call_true-termination.i [2018-09-15 13:06:54,062 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b13bc9d2c/dea7964c53b444cf88c54ea8328086a2/FLAGaa0a8c46a [2018-09-15 13:06:54,077 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b13bc9d2c/dea7964c53b444cf88c54ea8328086a2 [2018-09-15 13:06:54,088 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 13:06:54,091 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 13:06:54,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 13:06:54,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 13:06:54,099 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 13:06:54,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 01:06:54" (1/1) ... [2018-09-15 13:06:54,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0fe9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:54, skipping insertion in model container [2018-09-15 13:06:54,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 01:06:54" (1/1) ... [2018-09-15 13:06:54,115 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 13:06:54,302 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 13:06:54,320 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 13:06:54,326 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 13:06:54,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:54 WrapperNode [2018-09-15 13:06:54,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 13:06:54,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 13:06:54,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 13:06:54,342 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 13:06:54,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:54" (1/1) ... [2018-09-15 13:06:54,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:54" (1/1) ... [2018-09-15 13:06:54,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 13:06:54,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 13:06:54,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 13:06:54,366 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 13:06:54,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:54" (1/1) ... [2018-09-15 13:06:54,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:54" (1/1) ... [2018-09-15 13:06:54,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:54" (1/1) ... [2018-09-15 13:06:54,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:54" (1/1) ... [2018-09-15 13:06:54,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:54" (1/1) ... [2018-09-15 13:06:54,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:54" (1/1) ... [2018-09-15 13:06:54,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:54" (1/1) ... [2018-09-15 13:06:54,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 13:06:54,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 13:06:54,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 13:06:54,389 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 13:06:54,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:54" (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 13:06:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 13:06:54,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 13:06:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 13:06:54,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 13:06:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 13:06:54,466 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 13:06:54,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 13:06:54,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 13:06:54,888 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 13:06:54,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 01:06:54 BoogieIcfgContainer [2018-09-15 13:06:54,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 13:06:54,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 13:06:54,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 13:06:54,903 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 13:06:54,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 01:06:54" (1/3) ... [2018-09-15 13:06:54,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14807cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 01:06:54, skipping insertion in model container [2018-09-15 13:06:54,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:06:54" (2/3) ... [2018-09-15 13:06:54,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14807cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 01:06:54, skipping insertion in model container [2018-09-15 13:06:54,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 01:06:54" (3/3) ... [2018-09-15 13:06:54,912 INFO L112 eAbstractionObserver]: Analyzing ICFG down_true-unreach-call_true-termination.i [2018-09-15 13:06:54,931 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 13:06:54,940 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 13:06:54,991 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 13:06:54,992 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 13:06:54,992 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 13:06:54,992 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 13:06:54,993 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 13:06:54,993 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 13:06:54,993 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 13:06:54,993 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 13:06:54,993 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 13:06:55,013 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-09-15 13:06:55,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-15 13:06:55,020 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 13:06:55,021 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 13:06:55,022 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 13:06:55,028 INFO L82 PathProgramCache]: Analyzing trace with hash 123585964, now seen corresponding path program 1 times [2018-09-15 13:06:55,031 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 13:06:55,032 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-09-15 13:06:55,034 INFO L202 CegarAbsIntRunner]: [0], [4], [16], [18], [22], [28], [36], [39], [41], [47], [48], [49], [51] [2018-09-15 13:06:55,072 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 13:06:55,072 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 13:06:55,135 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 13:06:55,136 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 5 variables. [2018-09-15 13:06:55,152 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 13:06:55,195 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 33.33% of their original sizes. [2018-09-15 13:06:55,196 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 13:06:55,215 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 13:06:55,216 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 13:06:55,217 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-15 13:06:55,217 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 13:06:55,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-15 13:06:55,227 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-15 13:06:55,228 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 13:06:55,230 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2018-09-15 13:06:55,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 13:06:55,342 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2018-09-15 13:06:55,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-15 13:06:55,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-09-15 13:06:55,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 13:06:55,355 INFO L225 Difference]: With dead ends: 49 [2018-09-15 13:06:55,355 INFO L226 Difference]: Without dead ends: 25 [2018-09-15 13:06:55,359 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 12 GetRequests, 11 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 13:06:55,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-09-15 13:06:55,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 18. [2018-09-15 13:06:55,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-09-15 13:06:55,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-09-15 13:06:55,405 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2018-09-15 13:06:55,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 13:06:55,406 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-09-15 13:06:55,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-15 13:06:55,406 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-09-15 13:06:55,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-15 13:06:55,407 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 13:06:55,407 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 13:06:55,408 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 13:06:55,408 INFO L82 PathProgramCache]: Analyzing trace with hash -203615370, now seen corresponding path program 1 times [2018-09-15 13:06:55,408 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 13:06:55,409 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-15 13:06:55,409 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [18], [22], [28], [36], [39], [41], [47], [48], [49], [51] [2018-09-15 13:06:55,411 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 13:06:55,411 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 13:06:55,418 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 13:06:55,419 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Never found a fixpoint. Largest state had 5 variables. [2018-09-15 13:06:55,454 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 13:06:55,479 INFO L232 lantSequenceWeakener]: Weakened 3 states. On average, predicates are now at 44.44% of their original sizes. [2018-09-15 13:06:55,482 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 13:06:55,531 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 13:06:55,532 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 13:06:55,532 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-15 13:06:55,532 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 13:06:55,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-15 13:06:55,534 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-15 13:06:55,534 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-15 13:06:55,534 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2018-09-15 13:06:55,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 13:06:55,645 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-09-15 13:06:55,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-15 13:06:55,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-09-15 13:06:55,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 13:06:55,648 INFO L225 Difference]: With dead ends: 33 [2018-09-15 13:06:55,648 INFO L226 Difference]: Without dead ends: 20 [2018-09-15 13:06:55,650 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-15 13:06:55,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-09-15 13:06:55,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-09-15 13:06:55,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-09-15 13:06:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-09-15 13:06:55,660 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2018-09-15 13:06:55,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 13:06:55,660 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-09-15 13:06:55,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-15 13:06:55,660 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-09-15 13:06:55,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-15 13:06:55,661 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 13:06:55,663 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 13:06:55,663 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 13:06:55,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1025157488, now seen corresponding path program 1 times [2018-09-15 13:06:55,664 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 13:06:55,664 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-09-15 13:06:55,665 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [18], [22], [28], [36], [39], [41], [47], [48], [49], [51] [2018-09-15 13:06:55,666 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 13:06:55,667 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 13:06:55,717 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 13:06:55,718 INFO L272 AbstractInterpreter]: Visited 15 different actions 65 times. Merged at 6 different actions 32 times. Widened at 2 different actions 3 times. Found 2 fixpoints after 2 different actions. Largest state had 7 variables. [2018-09-15 13:06:55,744 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 13:06:55,759 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 13:06:55,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 01:06:55 BoogieIcfgContainer [2018-09-15 13:06:55,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 13:06:55,761 INFO L168 Benchmark]: Toolchain (without parser) took 1672.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -743.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 13:06:55,763 INFO L168 Benchmark]: CDTParser took 0.23 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 13:06:55,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.15 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2018-09-15 13:06:55,765 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.71 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 13:06:55,765 INFO L168 Benchmark]: Boogie Preprocessor took 23.14 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 13:06:55,766 INFO L168 Benchmark]: RCFGBuilder took 500.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -788.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-09-15 13:06:55,767 INFO L168 Benchmark]: TraceAbstraction took 869.86 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-15 13:06:55,772 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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. * CACSL2BoogieTranslator took 249.15 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 23.71 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 23.14 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 500.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -788.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 869.86 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: 31.7 MB). Peak memory consumption was 31.7 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: [L11] int n; [L12] int k = 0; [L13] int i = 0; [L14] n = __VERIFIER_nondet_int() [L15] COND TRUE i < n [L16] i++ [L16] i++ [L17] k++ [L17] k++ [L15] COND FALSE !(i < n) [L19] int j = n; [L20] COND TRUE j > 0 [L21] CALL __VERIFIER_assert(k > 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. UNKNOWN Result, 0.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 13 SDslu, 60 SDs, 0 SdLazy, 26 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9866666666666667 AbsIntWeakeningRatio, 0.48 AbsIntAvgWeakeningVarsNumRemoved, 0.32 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 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/down_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_13-06-55-786.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/down_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_13-06-55-786.csv Received shutdown request...