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 0.1.24-673a906-m [2019-10-03 02:35:01,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:35:01,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:35:01,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 02:35:01,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 02:35:01,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 02:35:01,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 02:35:01,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 02:35:01,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 02:35:01,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 02:35:01,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 02:35:01,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-03 02:35:01,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:35:01,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:35:01,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:35:01,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:35:01,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:35:01,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:35:01,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:35:01,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:35:01,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:35:01,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:35:01,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:35:01,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:35:01,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-03 02:35:01,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-03 02:35:01,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-03 02:35:01,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-03 02:35:01,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-03 02:35:01,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-03 02:35:01,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 02:35:01,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 02:35:01,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 02:35:01,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 02:35:01,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 02:35:01,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 02:35:01,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 02:35:01,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 02:35:01,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:35:01,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:35:01,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:35:01,372 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 [2019-10-03 02:35:01,408 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:35:01,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:35:01,410 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:35:01,410 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:35:01,411 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:35:01,411 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:35:01,411 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:35:01,411 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:35:01,412 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:35:01,412 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:35:01,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:35:01,416 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:35:01,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:35:01,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:35:01,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:35:01,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:35:01,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:35:01,417 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:35:01,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:35:01,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:35:01,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:35:01,419 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:35:01,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:35:01,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:35:01,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:35:01,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:35:01,420 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:35:01,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:35:01,421 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:35:01,421 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:35:01,472 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:35:01,485 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:35:01,489 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:35:01,491 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:35:01,491 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:35:01,492 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec11.c [2019-10-03 02:35:01,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae08f570e/4e34587389f54c1eb50160c48568580d/FLAGf983205e6 [2019-10-03 02:35:02,153 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:35:02,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec11.c [2019-10-03 02:35:02,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae08f570e/4e34587389f54c1eb50160c48568580d/FLAGf983205e6 [2019-10-03 02:35:02,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae08f570e/4e34587389f54c1eb50160c48568580d [2019-10-03 02:35:02,493 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:35:02,496 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:35:02,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:35:02,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:35:02,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:35:02,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:35:02" (1/1) ... [2019-10-03 02:35:02,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a958aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:02, skipping insertion in model container [2019-10-03 02:35:02,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:35:02" (1/1) ... [2019-10-03 02:35:02,519 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:35:02,538 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:35:02,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:35:02,773 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:35:02,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:35:02,803 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:35:02,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:02 WrapperNode [2019-10-03 02:35:02,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:35:02,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:35:02,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:35:02,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:35:02,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:02" (1/1) ... [2019-10-03 02:35:02,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:02" (1/1) ... [2019-10-03 02:35:02,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:02" (1/1) ... [2019-10-03 02:35:02,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:02" (1/1) ... [2019-10-03 02:35:02,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:02" (1/1) ... [2019-10-03 02:35:02,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:02" (1/1) ... [2019-10-03 02:35:02,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:02" (1/1) ... [2019-10-03 02:35:02,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:35:02,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:35:02,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:35:02,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:35:02,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:02" (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 [2019-10-03 02:35:03,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:35:03,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:35:03,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-03 02:35:03,012 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:35:03,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:35:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-03 02:35:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-03 02:35:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:35:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:35:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:35:03,224 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:35:03,224 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-03 02:35:03,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:35:03 BoogieIcfgContainer [2019-10-03 02:35:03,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:35:03,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:35:03,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:35:03,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:35:03,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:35:02" (1/3) ... [2019-10-03 02:35:03,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2eda4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:35:03, skipping insertion in model container [2019-10-03 02:35:03,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:02" (2/3) ... [2019-10-03 02:35:03,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2eda4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:35:03, skipping insertion in model container [2019-10-03 02:35:03,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:35:03" (3/3) ... [2019-10-03 02:35:03,248 INFO L109 eAbstractionObserver]: Analyzing ICFG nec11.c [2019-10-03 02:35:03,268 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:35:03,279 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:35:03,329 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:35:03,372 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:35:03,373 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:35:03,373 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:35:03,373 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:35:03,373 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:35:03,373 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:35:03,374 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:35:03,374 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:35:03,395 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-03 02:35:03,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-03 02:35:03,411 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:35:03,412 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:35:03,414 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:35:03,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:35:03,421 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2019-10-03 02:35:03,423 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:35:03,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:35:03,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:35:03,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:35:03,473 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:35:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:35:03,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:35:03,533 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:35:03,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-03 02:35:03,533 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:35:03,539 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:35:03,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:35:03,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:35:03,561 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-10-03 02:35:03,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:35:03,584 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-10-03 02:35:03,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:35:03,586 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-03 02:35:03,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:35:03,599 INFO L225 Difference]: With dead ends: 20 [2019-10-03 02:35:03,599 INFO L226 Difference]: Without dead ends: 13 [2019-10-03 02:35:03,602 INFO L640 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 [2019-10-03 02:35:03,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-03 02:35:03,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-03 02:35:03,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-03 02:35:03,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-10-03 02:35:03,652 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2019-10-03 02:35:03,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:35:03,653 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-10-03 02:35:03,653 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:35:03,653 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-10-03 02:35:03,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-03 02:35:03,654 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:35:03,654 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:35:03,655 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:35:03,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:35:03,655 INFO L82 PathProgramCache]: Analyzing trace with hash -158041290, now seen corresponding path program 1 times [2019-10-03 02:35:03,655 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:35:03,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:35:03,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:35:03,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:35:03,661 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:35:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-03 02:35:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-03 02:35:03,732 INFO L478 BasicCegarLoop]: Counterexample might be feasible [2019-10-03 02:35:03,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:35:03 BoogieIcfgContainer [2019-10-03 02:35:03,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:35:03,768 INFO L168 Benchmark]: Toolchain (without parser) took 1271.28 ms. Allocated memory was 138.4 MB in the beginning and 199.2 MB in the end (delta: 60.8 MB). Free memory was 85.2 MB in the beginning and 143.8 MB in the end (delta: -58.6 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-10-03 02:35:03,770 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:35:03,771 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.63 ms. Allocated memory is still 138.4 MB. Free memory was 85.0 MB in the beginning and 75.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-10-03 02:35:03,773 INFO L168 Benchmark]: Boogie Preprocessor took 135.17 ms. Allocated memory was 138.4 MB in the beginning and 199.2 MB in the end (delta: 60.8 MB). Free memory was 75.6 MB in the beginning and 176.6 MB in the end (delta: -101.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-10-03 02:35:03,774 INFO L168 Benchmark]: RCFGBuilder took 286.36 ms. Allocated memory is still 199.2 MB. Free memory was 176.6 MB in the beginning and 165.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-10-03 02:35:03,775 INFO L168 Benchmark]: TraceAbstraction took 536.50 ms. Allocated memory is still 199.2 MB. Free memory was 164.8 MB in the beginning and 143.8 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2019-10-03 02:35:03,779 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 305.63 ms. Allocated memory is still 138.4 MB. Free memory was 85.0 MB in the beginning and 75.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.17 ms. Allocated memory was 138.4 MB in the beginning and 199.2 MB in the end (delta: 60.8 MB). Free memory was 75.6 MB in the beginning and 176.6 MB in the end (delta: -101.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 286.36 ms. Allocated memory is still 199.2 MB. Free memory was 176.6 MB in the beginning and 165.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 536.50 ms. Allocated memory is still 199.2 MB. Free memory was 164.8 MB in the beginning and 143.8 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 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, 0.4s 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...