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/array-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:48:33,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:48:33,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:48:33,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:48:33,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:48:33,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:48:33,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:48:33,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:48:33,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:48:33,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:48:33,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:48:33,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:48:33,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:48:33,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:48:33,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:48:33,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:48:33,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:48:33,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:48:33,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:48:33,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:48:33,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:48:33,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:48:33,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:48:33,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:48:33,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:48:33,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:48:33,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:48:33,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:48:33,403 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 [2019-09-10 01:48:33,417 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:48:33,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:48:33,418 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:48:33,418 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:48:33,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:48:33,419 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:48:33,419 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:48:33,419 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:48:33,419 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:48:33,419 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:48:33,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:48:33,420 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:48:33,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:48:33,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:48:33,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:48:33,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:48:33,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:48:33,421 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:48:33,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:48:33,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:48:33,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:48:33,422 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:48:33,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:48:33,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:48:33,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:48:33,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:48:33,423 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:48:33,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:48:33,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:48:33,424 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:48:33,451 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:48:33,463 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:48:33,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:48:33,468 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:48:33,468 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:48:33,469 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-2.c [2019-09-10 01:48:33,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428c4f522/664b8972317b48b1bc65066ccd5ad8bd/FLAG2c4c51bb0 [2019-09-10 01:48:33,934 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:48:33,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/array-2.c [2019-09-10 01:48:33,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428c4f522/664b8972317b48b1bc65066ccd5ad8bd/FLAG2c4c51bb0 [2019-09-10 01:48:34,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428c4f522/664b8972317b48b1bc65066ccd5ad8bd [2019-09-10 01:48:34,359 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:48:34,361 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:48:34,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:48:34,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:48:34,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:48:34,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:48:34" (1/1) ... [2019-09-10 01:48:34,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a823ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:34, skipping insertion in model container [2019-09-10 01:48:34,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:48:34" (1/1) ... [2019-09-10 01:48:34,381 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:48:34,400 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:48:34,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:48:34,607 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:48:34,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:48:34,652 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:48:34,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:34 WrapperNode [2019-09-10 01:48:34,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:48:34,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:48:34,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:48:34,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:48:34,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:34" (1/1) ... [2019-09-10 01:48:34,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:34" (1/1) ... [2019-09-10 01:48:34,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:34" (1/1) ... [2019-09-10 01:48:34,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:34" (1/1) ... [2019-09-10 01:48:34,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:34" (1/1) ... [2019-09-10 01:48:34,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:34" (1/1) ... [2019-09-10 01:48:34,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:34" (1/1) ... [2019-09-10 01:48:34,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:48:34,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:48:34,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:48:34,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:48:34,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:34" (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 [2019-09-10 01:48:34,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:48:34,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:48:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 01:48:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:48:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:48:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 01:48:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 01:48:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:48:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:48:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:48:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:48:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:48:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:48:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:48:35,038 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:48:35,038 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-10 01:48:35,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:48:35 BoogieIcfgContainer [2019-09-10 01:48:35,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:48:35,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:48:35,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:48:35,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:48:35,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:48:34" (1/3) ... [2019-09-10 01:48:35,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20277c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:48:35, skipping insertion in model container [2019-09-10 01:48:35,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:34" (2/3) ... [2019-09-10 01:48:35,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20277c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:48:35, skipping insertion in model container [2019-09-10 01:48:35,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:48:35" (3/3) ... [2019-09-10 01:48:35,067 INFO L109 eAbstractionObserver]: Analyzing ICFG array-2.c [2019-09-10 01:48:35,084 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:48:35,103 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:48:35,135 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:48:35,161 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:48:35,161 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:48:35,161 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:48:35,161 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:48:35,161 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:48:35,162 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:48:35,162 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:48:35,162 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:48:35,173 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-10 01:48:35,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-10 01:48:35,180 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:35,181 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:35,183 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:35,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:35,188 INFO L82 PathProgramCache]: Analyzing trace with hash 202253298, now seen corresponding path program 1 times [2019-09-10 01:48:35,190 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:35,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:35,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:35,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:35,231 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:35,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:48:35,327 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:35,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:48:35,327 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:35,330 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:48:35,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:48:35,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:48:35,343 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-09-10 01:48:35,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:35,356 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-09-10 01:48:35,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:48:35,358 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-09-10 01:48:35,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:35,366 INFO L225 Difference]: With dead ends: 22 [2019-09-10 01:48:35,367 INFO L226 Difference]: Without dead ends: 15 [2019-09-10 01:48:35,368 INFO L628 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 [2019-09-10 01:48:35,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-10 01:48:35,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-10 01:48:35,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-10 01:48:35,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-09-10 01:48:35,403 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2019-09-10 01:48:35,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:35,403 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-09-10 01:48:35,403 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:48:35,404 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-09-10 01:48:35,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-10 01:48:35,404 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:35,404 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:35,405 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:35,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:35,405 INFO L82 PathProgramCache]: Analyzing trace with hash -112667363, now seen corresponding path program 1 times [2019-09-10 01:48:35,405 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:35,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:35,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:35,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:35,407 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:48:35,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:35,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 01:48:35,548 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:35,549 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:48:35,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:48:35,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:48:35,550 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 3 states. [2019-09-10 01:48:35,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:35,571 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-09-10 01:48:35,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:48:35,572 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-09-10 01:48:35,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:35,573 INFO L225 Difference]: With dead ends: 18 [2019-09-10 01:48:35,573 INFO L226 Difference]: Without dead ends: 18 [2019-09-10 01:48:35,574 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:48:35,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-10 01:48:35,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2019-09-10 01:48:35,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-10 01:48:35,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-09-10 01:48:35,579 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2019-09-10 01:48:35,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:35,580 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-09-10 01:48:35,580 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:48:35,580 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-09-10 01:48:35,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-10 01:48:35,581 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:35,581 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:35,581 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:35,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:35,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1912057964, now seen corresponding path program 1 times [2019-09-10 01:48:35,582 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:35,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:35,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:35,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:35,583 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:48:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:48:35,713 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 01:48:35,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:48:35 BoogieIcfgContainer [2019-09-10 01:48:35,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:48:35,750 INFO L168 Benchmark]: Toolchain (without parser) took 1387.82 ms. Allocated memory was 140.0 MB in the beginning and 199.8 MB in the end (delta: 59.8 MB). Free memory was 86.7 MB in the beginning and 129.7 MB in the end (delta: -43.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:35,752 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:48:35,754 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.31 ms. Allocated memory is still 140.0 MB. Free memory was 86.5 MB in the beginning and 76.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:35,756 INFO L168 Benchmark]: Boogie Preprocessor took 114.59 ms. Allocated memory was 140.0 MB in the beginning and 199.8 MB in the end (delta: 59.8 MB). Free memory was 76.8 MB in the beginning and 176.6 MB in the end (delta: -99.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:35,757 INFO L168 Benchmark]: RCFGBuilder took 280.39 ms. Allocated memory is still 199.8 MB. Free memory was 176.6 MB in the beginning and 163.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:35,758 INFO L168 Benchmark]: TraceAbstraction took 696.53 ms. Allocated memory is still 199.8 MB. Free memory was 163.1 MB in the beginning and 129.7 MB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:35,769 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.31 ms. Allocated memory is still 140.0 MB. Free memory was 86.5 MB in the beginning and 76.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.59 ms. Allocated memory was 140.0 MB in the beginning and 199.8 MB in the end (delta: 59.8 MB). Free memory was 76.8 MB in the beginning and 176.6 MB in the end (delta: -99.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 280.39 ms. Allocated memory is still 199.8 MB. Free memory was 176.6 MB in the beginning and 163.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 696.53 ms. Allocated memory is still 199.8 MB. Free memory was 163.1 MB in the beginning and 129.7 MB 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: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int SIZE=1; [L14] unsigned int j,k; [L15] int array[SIZE], menor; [L17] menor = __VERIFIER_nondet_int() [L19] j=0 VAL [array={1:0}, j=0, menor=3, SIZE=1] [L19] COND TRUE jmenor) 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, 22 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 36 SDtfs, 3 SDslu, 11 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 363 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...