java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loops/nec11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:25:07,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:25:07,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:25:07,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:25:07,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:25:07,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:25:07,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:25:07,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:25:07,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:25:07,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:25:07,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:25:07,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:25:07,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:25:07,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:25:07,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:25:07,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:25:07,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:25:07,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:25:07,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:25:07,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:25:07,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:25:07,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:25:07,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:25:07,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:25:07,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:25:07,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:25:07,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:25:07,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:25:07,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:25:07,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:25:07,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:25:07,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:25:07,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:25:07,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:25:07,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:25:07,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:25:07,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:25:07,479 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:25:07,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:25:07,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:25:07,481 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:25:07,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:25:07,482 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:25:07,482 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:25:07,482 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:25:07,482 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:25:07,482 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:25:07,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:25:07,485 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:25:07,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:25:07,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:25:07,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:25:07,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:25:07,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:25:07,486 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:25:07,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:25:07,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:25:07,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:25:07,487 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:25:07,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:25:07,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:25:07,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:25:07,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:25:07,489 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:25:07,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:25:07,489 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:25:07,489 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:25:07,532 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:25:07,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:25:07,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:25:07,549 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:25:07,549 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:25:07,550 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec11.c [2019-09-20 13:25:07,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e41cbead9/67fdbb0096724c0ea5d7dd925de05757/FLAG560683e91 [2019-09-20 13:25:08,056 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:25:08,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec11.c [2019-09-20 13:25:08,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e41cbead9/67fdbb0096724c0ea5d7dd925de05757/FLAG560683e91 [2019-09-20 13:25:08,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e41cbead9/67fdbb0096724c0ea5d7dd925de05757 [2019-09-20 13:25:08,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:25:08,466 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:25:08,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:08,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:25:08,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:25:08,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:08" (1/1) ... [2019-09-20 13:25:08,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58d75b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:08, skipping insertion in model container [2019-09-20 13:25:08,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:08" (1/1) ... [2019-09-20 13:25:08,485 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:25:08,499 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:25:08,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:08,699 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:25:08,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:08,726 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:25:08,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:08 WrapperNode [2019-09-20 13:25:08,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:08,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:25:08,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:25:08,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:25:08,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:08" (1/1) ... [2019-09-20 13:25:08,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:08" (1/1) ... [2019-09-20 13:25:08,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:08" (1/1) ... [2019-09-20 13:25:08,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:08" (1/1) ... [2019-09-20 13:25:08,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:08" (1/1) ... [2019-09-20 13:25:08,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:08" (1/1) ... [2019-09-20 13:25:08,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:08" (1/1) ... [2019-09-20 13:25:08,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:25:08,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:25:08,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:25:08,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:25:08,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:08" (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 [2019-09-20 13:25:08,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:25:08,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:25:08,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:25:08,905 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:25:08,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:25:08,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:25:08,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-20 13:25:08,906 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:25:08,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:25:08,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:25:09,067 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:25:09,067 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 13:25:09,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:09 BoogieIcfgContainer [2019-09-20 13:25:09,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:25:09,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:25:09,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:25:09,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:25:09,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:25:08" (1/3) ... [2019-09-20 13:25:09,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136536bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:09, skipping insertion in model container [2019-09-20 13:25:09,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:08" (2/3) ... [2019-09-20 13:25:09,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136536bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:09, skipping insertion in model container [2019-09-20 13:25:09,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:09" (3/3) ... [2019-09-20 13:25:09,076 INFO L109 eAbstractionObserver]: Analyzing ICFG nec11.c [2019-09-20 13:25:09,086 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:25:09,093 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:25:09,115 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:25:09,156 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:25:09,156 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:25:09,157 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:25:09,157 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:25:09,157 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:25:09,157 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:25:09,158 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:25:09,158 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:25:09,177 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-09-20 13:25:09,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-20 13:25:09,190 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:09,191 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:09,193 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:09,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:09,199 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2019-09-20 13:25:09,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:09,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:09,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:09,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:09,260 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:09,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:09,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:09,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:25:09,310 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:09,314 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:25:09,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:25:09,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:25:09,333 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-09-20 13:25:09,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:09,356 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-09-20 13:25:09,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:25:09,358 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-20 13:25:09,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:09,371 INFO L225 Difference]: With dead ends: 20 [2019-09-20 13:25:09,371 INFO L226 Difference]: Without dead ends: 13 [2019-09-20 13:25:09,376 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:25:09,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-20 13:25:09,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-20 13:25:09,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-20 13:25:09,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-09-20 13:25:09,421 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2019-09-20 13:25:09,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:09,422 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-09-20 13:25:09,422 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:25:09,422 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-09-20 13:25:09,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-20 13:25:09,424 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:09,424 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:09,425 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:09,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:09,428 INFO L82 PathProgramCache]: Analyzing trace with hash -158041290, now seen corresponding path program 1 times [2019-09-20 13:25:09,428 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:09,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:09,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:09,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:09,432 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-20 13:25:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-20 13:25:09,511 INFO L474 BasicCegarLoop]: Counterexample might be feasible [2019-09-20 13:25:09,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:25:09 BoogieIcfgContainer [2019-09-20 13:25:09,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:25:09,544 INFO L168 Benchmark]: Toolchain (without parser) took 1075.23 ms. Allocated memory was 132.6 MB in the beginning and 200.3 MB in the end (delta: 67.6 MB). Free memory was 87.1 MB in the beginning and 144.0 MB in the end (delta: -56.9 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:09,546 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 132.6 MB. Free memory was 105.6 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:25:09,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.26 ms. Allocated memory is still 132.6 MB. Free memory was 86.9 MB in the beginning and 77.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:09,551 INFO L168 Benchmark]: Boogie Preprocessor took 123.45 ms. Allocated memory was 132.6 MB in the beginning and 200.3 MB in the end (delta: 67.6 MB). Free memory was 77.5 MB in the beginning and 176.6 MB in the end (delta: -99.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:09,552 INFO L168 Benchmark]: RCFGBuilder took 217.71 ms. Allocated memory is still 200.3 MB. Free memory was 176.6 MB in the beginning and 165.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:09,553 INFO L168 Benchmark]: TraceAbstraction took 469.56 ms. Allocated memory is still 200.3 MB. Free memory was 164.9 MB in the beginning and 144.0 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:09,566 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 132.6 MB. Free memory was 105.6 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.26 ms. Allocated memory is still 132.6 MB. Free memory was 86.9 MB in the beginning and 77.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.45 ms. Allocated memory was 132.6 MB in the beginning and 200.3 MB in the end (delta: 67.6 MB). Free memory was 77.5 MB in the beginning and 176.6 MB in the end (delta: -99.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 217.71 ms. Allocated memory is still 200.3 MB. Free memory was 176.6 MB in the beginning and 165.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 469.56 ms. Allocated memory is still 200.3 MB. Free memory was 164.9 MB in the beginning and 144.0 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] int a[5]; [L14] int len=0; [L15] _Bool c=__VERIFIER_nondet_bool(); [L16] int i; VAL [c=0, len=0] [L19] COND FALSE !(\read(c)) VAL [c=0, len=0] [L28] CALL __VERIFIER_assert(len==5) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...