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_INTCON-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-invgen/string_concat-noarr_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 11:36:23,496 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 11:36:23,499 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 11:36:23,512 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 11:36:23,512 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 11:36:23,513 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 11:36:23,515 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 11:36:23,516 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 11:36:23,518 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 11:36:23,519 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 11:36:23,520 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 11:36:23,520 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 11:36:23,521 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 11:36:23,522 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 11:36:23,523 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 11:36:23,524 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 11:36:23,525 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 11:36:23,527 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 11:36:23,529 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 11:36:23,531 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 11:36:23,532 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 11:36:23,533 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 11:36:23,537 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 11:36:23,538 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 11:36:23,538 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 11:36:23,541 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 11:36:23,545 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 11:36:23,545 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 11:36:23,546 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 11:36:23,549 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 11:36:23,549 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 11:36:23,553 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-19 11:36:23,557 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf [2018-09-19 11:36:23,585 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 11:36:23,586 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 11:36:23,587 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 11:36:23,587 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 11:36:23,587 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 11:36:23,587 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 11:36:23,587 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 11:36:23,587 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-19 11:36:23,588 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-19 11:36:23,588 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 11:36:23,588 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 11:36:23,588 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 11:36:23,589 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 11:36:23,589 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 11:36:23,589 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 11:36:23,589 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 11:36:23,590 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 11:36:23,590 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 11:36:23,590 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 11:36:23,590 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 11:36:23,590 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 11:36:23,591 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 11:36:23,591 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 11:36:23,591 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 11:36:23,591 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 11:36:23,591 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 11:36:23,592 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 11:36:23,592 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 11:36:23,592 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 11:36:23,592 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 11:36:23,592 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 11:36:23,593 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 11:36:23,593 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 11:36:23,593 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 11:36:23,641 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 11:36:23,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 11:36:23,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 11:36:23,659 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 11:36:23,660 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 11:36:23,661 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/string_concat-noarr_true-unreach-call_true-termination.i [2018-09-19 11:36:24,028 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6be81e88f/21460ce5bbb146819d1f6655b596ec5d/FLAGf2cffaa1b [2018-09-19 11:36:24,200 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 11:36:24,201 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/string_concat-noarr_true-unreach-call_true-termination.i [2018-09-19 11:36:24,208 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6be81e88f/21460ce5bbb146819d1f6655b596ec5d/FLAGf2cffaa1b [2018-09-19 11:36:24,222 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6be81e88f/21460ce5bbb146819d1f6655b596ec5d [2018-09-19 11:36:24,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 11:36:24,236 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 11:36:24,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 11:36:24,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 11:36:24,244 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 11:36:24,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 11:36:24" (1/1) ... [2018-09-19 11:36:24,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@121ead65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:24, skipping insertion in model container [2018-09-19 11:36:24,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 11:36:24" (1/1) ... [2018-09-19 11:36:24,259 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 11:36:24,445 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 11:36:24,464 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 11:36:24,469 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 11:36:24,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:24 WrapperNode [2018-09-19 11:36:24,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 11:36:24,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 11:36:24,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 11:36:24,484 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 11:36:24,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:24" (1/1) ... [2018-09-19 11:36:24,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:24" (1/1) ... [2018-09-19 11:36:24,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 11:36:24,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 11:36:24,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 11:36:24,506 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 11:36:24,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:24" (1/1) ... [2018-09-19 11:36:24,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:24" (1/1) ... [2018-09-19 11:36:24,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:24" (1/1) ... [2018-09-19 11:36:24,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:24" (1/1) ... [2018-09-19 11:36:24,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:24" (1/1) ... [2018-09-19 11:36:24,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:24" (1/1) ... [2018-09-19 11:36:24,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:24" (1/1) ... [2018-09-19 11:36:24,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 11:36:24,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 11:36:24,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 11:36:24,529 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 11:36:24,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:24" (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 11:36:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 11:36:24,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 11:36:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 11:36:24,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 11:36:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 11:36:24,605 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 11:36:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 11:36:24,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 11:36:24,971 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 11:36:24,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 11:36:24 BoogieIcfgContainer [2018-09-19 11:36:24,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 11:36:24,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 11:36:24,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 11:36:24,976 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 11:36:24,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 11:36:24" (1/3) ... [2018-09-19 11:36:24,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df0e1cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 11:36:24, skipping insertion in model container [2018-09-19 11:36:24,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:36:24" (2/3) ... [2018-09-19 11:36:24,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df0e1cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 11:36:24, skipping insertion in model container [2018-09-19 11:36:24,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 11:36:24" (3/3) ... [2018-09-19 11:36:24,980 INFO L112 eAbstractionObserver]: Analyzing ICFG string_concat-noarr_true-unreach-call_true-termination.i [2018-09-19 11:36:24,991 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 11:36:24,999 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 11:36:25,050 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 11:36:25,051 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 11:36:25,051 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 11:36:25,052 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 11:36:25,052 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 11:36:25,052 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 11:36:25,052 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 11:36:25,052 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 11:36:25,053 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 11:36:25,072 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-09-19 11:36:25,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-19 11:36:25,080 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:36:25,081 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 11:36:25,082 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:36:25,088 INFO L82 PathProgramCache]: Analyzing trace with hash -745796184, now seen corresponding path program 1 times [2018-09-19 11:36:25,092 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:36:25,094 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-19 11:36:25,096 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [19], [26], [39], [45], [49], [52], [54], [60], [61], [62], [64] [2018-09-19 11:36:25,142 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 11:36:25,142 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:36:25,211 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:36:25,213 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 11:36:25,252 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:36:25,316 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-19 11:36:25,316 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:36:25,350 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:36:25,352 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:36:25,353 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 11:36:25,353 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:36:25,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 11:36:25,381 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 11:36:25,385 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 11:36:25,393 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2018-09-19 11:36:25,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:36:25,542 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2018-09-19 11:36:25,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 11:36:25,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-09-19 11:36:25,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:36:25,554 INFO L225 Difference]: With dead ends: 58 [2018-09-19 11:36:25,555 INFO L226 Difference]: Without dead ends: 28 [2018-09-19 11:36:25,558 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 11:36:25,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-19 11:36:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2018-09-19 11:36:25,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-19 11:36:25,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-09-19 11:36:25,594 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2018-09-19 11:36:25,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:36:25,595 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-09-19 11:36:25,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 11:36:25,595 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-09-19 11:36:25,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-19 11:36:25,596 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:36:25,597 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 11:36:25,597 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:36:25,598 INFO L82 PathProgramCache]: Analyzing trace with hash 800081396, now seen corresponding path program 1 times [2018-09-19 11:36:25,598 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:36:25,598 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-09-19 11:36:25,599 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [10], [12], [15], [26], [30], [32], [35], [45], [49], [52], [54], [60], [61], [62], [64] [2018-09-19 11:36:25,601 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 11:36:25,601 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:36:25,639 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-19 11:36:25,640 INFO L272 AbstractInterpreter]: Visited 18 different actions 18 times. Never merged. Never widened. Never found a fixpoint. Largest state had 4 variables. [2018-09-19 11:36:25,655 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 11:36:25,674 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-19 11:36:25,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 11:36:25 BoogieIcfgContainer [2018-09-19 11:36:25,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 11:36:25,676 INFO L168 Benchmark]: Toolchain (without parser) took 1441.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -783.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 11:36:25,678 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 11:36:25,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.90 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 11:36:25,680 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.24 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 11:36:25,680 INFO L168 Benchmark]: Boogie Preprocessor took 22.01 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 11:36:25,681 INFO L168 Benchmark]: RCFGBuilder took 443.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -827.0 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-09-19 11:36:25,682 INFO L168 Benchmark]: TraceAbstraction took 701.69 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: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-09-19 11:36:25,688 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 245.90 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 22.24 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 22.01 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 443.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -827.0 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 701.69 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: 33.3 MB). Peak memory consumption was 33.3 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 i, j; [L13] i = 0 [L15] COND FALSE !(__VERIFIER_nondet_int() && i < 1000000) [L18] COND FALSE !(i >= 100) [L19] j = 0 [L21] COND FALSE !(__VERIFIER_nondet_int() && i < 1000000) [L25] COND FALSE !(j >= 100) [L26] CALL __VERIFIER_assert( i < 200 ) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. UNKNOWN Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 25 SDtfs, 11 SDslu, 21 SDs, 0 SdLazy, 12 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 2 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.46153846153846156 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 9 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/string_concat-noarr_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_11-36-25-701.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/string_concat-noarr_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_11-36-25-701.csv Received shutdown request...