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-c6af20d [2019-09-03 20:36:33,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:36:33,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:36:33,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 20:36:33,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 20:36:33,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 20:36:33,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 20:36:33,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 20:36:33,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 20:36:33,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 20:36:33,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 20:36:33,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 20:36:33,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:36:33,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:36:33,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:36:33,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:36:33,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:36:33,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:36:33,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:36:33,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:36:33,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:36:33,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:36:33,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:36:33,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:36:33,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:36:33,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 20:36:33,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 20:36:33,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 20:36:33,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 20:36:33,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 20:36:33,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 20:36:33,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 20:36:33,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 20:36:33,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:36:33,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:36:33,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:36:33,914 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 [2019-09-03 20:36:33,929 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:36:33,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:36:33,929 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 20:36:33,930 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 20:36:33,930 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 20:36:33,930 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 20:36:33,931 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 20:36:33,931 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 20:36:33,931 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 20:36:33,931 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 20:36:33,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:36:33,932 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:36:33,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:36:33,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:36:33,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:36:33,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:36:33,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:36:33,933 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:36:33,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:36:33,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:36:33,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:36:33,934 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 20:36:33,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:36:33,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:36:33,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:36:33,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:36:33,935 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 20:36:33,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:36:33,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:36:33,936 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 20:36:33,977 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:36:33,989 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:36:33,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:36:33,994 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:36:33,994 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:36:33,995 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-2.c [2019-09-03 20:36:34,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3139f97e9/4179be3a858b4f7db84ef9eb1401353f/FLAG2d7b5a329 [2019-09-03 20:36:34,559 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:36:34,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/array-2.c [2019-09-03 20:36:34,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3139f97e9/4179be3a858b4f7db84ef9eb1401353f/FLAG2d7b5a329 [2019-09-03 20:36:34,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3139f97e9/4179be3a858b4f7db84ef9eb1401353f [2019-09-03 20:36:34,923 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:36:34,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:36:34,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:36:34,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:36:34,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:36:34,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:36:34" (1/1) ... [2019-09-03 20:36:34,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d59ac8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:34, skipping insertion in model container [2019-09-03 20:36:34,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:36:34" (1/1) ... [2019-09-03 20:36:34,940 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:36:34,956 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:36:35,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:36:35,159 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:36:35,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:36:35,196 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:36:35,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:35 WrapperNode [2019-09-03 20:36:35,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:36:35,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:36:35,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:36:35,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:36:35,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:35" (1/1) ... [2019-09-03 20:36:35,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:35" (1/1) ... [2019-09-03 20:36:35,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:35" (1/1) ... [2019-09-03 20:36:35,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:35" (1/1) ... [2019-09-03 20:36:35,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:35" (1/1) ... [2019-09-03 20:36:35,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:35" (1/1) ... [2019-09-03 20:36:35,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:35" (1/1) ... [2019-09-03 20:36:35,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:36:35,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:36:35,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:36:35,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:36:35,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:35" (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 [2019-09-03 20:36:35,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:36:35,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:36:35,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 20:36:35,374 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:36:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:36:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:36:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 20:36:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:36:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-03 20:36:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-03 20:36:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-03 20:36:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-03 20:36:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:36:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:36:35,639 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:36:35,640 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 20:36:35,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:36:35 BoogieIcfgContainer [2019-09-03 20:36:35,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:36:35,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:36:35,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:36:35,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:36:35,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:36:34" (1/3) ... [2019-09-03 20:36:35,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8cf36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:36:35, skipping insertion in model container [2019-09-03 20:36:35,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:35" (2/3) ... [2019-09-03 20:36:35,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8cf36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:36:35, skipping insertion in model container [2019-09-03 20:36:35,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:36:35" (3/3) ... [2019-09-03 20:36:35,664 INFO L109 eAbstractionObserver]: Analyzing ICFG array-2.c [2019-09-03 20:36:35,685 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:36:35,700 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:36:35,718 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:36:35,749 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:36:35,749 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 20:36:35,749 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:36:35,749 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:36:35,750 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:36:35,750 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:36:35,750 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:36:35,750 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:36:35,762 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-03 20:36:35,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-03 20:36:35,770 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:36:35,771 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:36:35,773 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:36:35,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:36:35,777 INFO L82 PathProgramCache]: Analyzing trace with hash 202253298, now seen corresponding path program 1 times [2019-09-03 20:36:35,779 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:36:35,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:35,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:36:35,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:35,823 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:36:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:36:35,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:36:35,935 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:36:35,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 20:36:35,935 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:36:35,938 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:36:35,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:36:35,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:36:35,955 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-09-03 20:36:35,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:36:35,973 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-09-03 20:36:35,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:36:35,975 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-09-03 20:36:35,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:36:35,985 INFO L225 Difference]: With dead ends: 22 [2019-09-03 20:36:35,986 INFO L226 Difference]: Without dead ends: 15 [2019-09-03 20:36:35,988 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 [2019-09-03 20:36:36,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-03 20:36:36,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-03 20:36:36,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-03 20:36:36,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-09-03 20:36:36,026 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2019-09-03 20:36:36,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:36:36,027 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-09-03 20:36:36,027 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:36:36,027 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-09-03 20:36:36,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-03 20:36:36,028 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:36:36,029 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:36:36,029 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:36:36,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:36:36,030 INFO L82 PathProgramCache]: Analyzing trace with hash -112667363, now seen corresponding path program 1 times [2019-09-03 20:36:36,030 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:36:36,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:36,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:36:36,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:36,032 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:36:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:36:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:36:36,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:36:36,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-03 20:36:36,204 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:36:36,205 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-03 20:36:36,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-03 20:36:36,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-03 20:36:36,206 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 3 states. [2019-09-03 20:36:36,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:36:36,252 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-09-03 20:36:36,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-03 20:36:36,253 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-09-03 20:36:36,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:36:36,254 INFO L225 Difference]: With dead ends: 18 [2019-09-03 20:36:36,255 INFO L226 Difference]: Without dead ends: 18 [2019-09-03 20:36:36,256 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 [2019-09-03 20:36:36,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-03 20:36:36,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2019-09-03 20:36:36,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-03 20:36:36,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-09-03 20:36:36,263 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2019-09-03 20:36:36,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:36:36,263 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-09-03 20:36:36,263 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-03 20:36:36,264 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-09-03 20:36:36,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-03 20:36:36,265 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:36:36,265 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:36:36,265 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:36:36,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:36:36,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1912057964, now seen corresponding path program 1 times [2019-09-03 20:36:36,267 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:36:36,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:36,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:36:36,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:36,271 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:36:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-03 20:36:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-03 20:36:36,441 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-03 20:36:36,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:36:36 BoogieIcfgContainer [2019-09-03 20:36:36,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:36:36,486 INFO L168 Benchmark]: Toolchain (without parser) took 1558.16 ms. Allocated memory was 130.5 MB in the beginning and 197.7 MB in the end (delta: 67.1 MB). Free memory was 86.2 MB in the beginning and 125.6 MB in the end (delta: -39.4 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:36,488 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 130.5 MB. Free memory was 104.7 MB in the beginning and 104.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:36:36,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.59 ms. Allocated memory is still 130.5 MB. Free memory was 85.8 MB in the beginning and 76.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:36,493 INFO L168 Benchmark]: Boogie Preprocessor took 114.63 ms. Allocated memory was 130.5 MB in the beginning and 197.7 MB in the end (delta: 67.1 MB). Free memory was 76.2 MB in the beginning and 173.3 MB in the end (delta: -97.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:36,494 INFO L168 Benchmark]: RCFGBuilder took 329.38 ms. Allocated memory is still 197.7 MB. Free memory was 173.3 MB in the beginning and 159.4 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:36,495 INFO L168 Benchmark]: TraceAbstraction took 838.20 ms. Allocated memory is still 197.7 MB. Free memory was 159.4 MB in the beginning and 125.6 MB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:36,507 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 130.5 MB. Free memory was 104.7 MB in the beginning and 104.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 271.59 ms. Allocated memory is still 130.5 MB. Free memory was 85.8 MB in the beginning and 76.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.63 ms. Allocated memory was 130.5 MB in the beginning and 197.7 MB in the end (delta: 67.1 MB). Free memory was 76.2 MB in the beginning and 173.3 MB in the end (delta: -97.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 329.38 ms. Allocated memory is still 197.7 MB. Free memory was 173.3 MB in the beginning and 159.4 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 838.20 ms. Allocated memory is still 197.7 MB. Free memory was 159.4 MB in the beginning and 125.6 MB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 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, 0.7s 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...