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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_build.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 16:12:08,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 16:12:08,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 16:12:08,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 16:12:08,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 16:12:08,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 16:12:08,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 16:12:08,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 16:12:08,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 16:12:08,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 16:12:08,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 16:12:08,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 16:12:08,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 16:12:08,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 16:12:08,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 16:12:08,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 16:12:08,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 16:12:08,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 16:12:08,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 16:12:08,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 16:12:08,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 16:12:08,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 16:12:08,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 16:12:08,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 16:12:08,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 16:12:08,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 16:12:08,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 16:12:08,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 16:12:08,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 16:12:08,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 16:12:08,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 16:12:08,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 16:12:08,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 16:12:08,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 16:12:08,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 16:12:08,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 16:12:08,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 16:12:08,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 16:12:08,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 16:12:08,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 16:12:08,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 16:12:08,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-16 16:12:08,978 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 16:12:08,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 16:12:08,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-16 16:12:08,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-16 16:12:08,981 INFO L138 SettingsManager]: * Use SBE=true [2019-09-16 16:12:08,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 16:12:08,982 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 16:12:08,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-16 16:12:08,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 16:12:08,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 16:12:08,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 16:12:08,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 16:12:08,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 16:12:08,984 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 16:12:08,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 16:12:08,984 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-16 16:12:08,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 16:12:08,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 16:12:08,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 16:12:08,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-16 16:12:08,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-16 16:12:08,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:12:08,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 16:12:08,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 16:12:08,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-16 16:12:08,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-16 16:12:08,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 16:12:08,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-16 16:12:08,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 16:12:09,030 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 16:12:09,043 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 16:12:09,047 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 16:12:09,048 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 16:12:09,049 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 16:12:09,050 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i [2019-09-16 16:12:09,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b0a48dbb/91914d64dab643fdb56f407b0702e8b7/FLAGd837c18bd [2019-09-16 16:12:09,571 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 16:12:09,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i [2019-09-16 16:12:09,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b0a48dbb/91914d64dab643fdb56f407b0702e8b7/FLAGd837c18bd [2019-09-16 16:12:09,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b0a48dbb/91914d64dab643fdb56f407b0702e8b7 [2019-09-16 16:12:10,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 16:12:10,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 16:12:10,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 16:12:10,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 16:12:10,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 16:12:10,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:12:10" (1/1) ... [2019-09-16 16:12:10,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fedec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10, skipping insertion in model container [2019-09-16 16:12:10,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:12:10" (1/1) ... [2019-09-16 16:12:10,031 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 16:12:10,048 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 16:12:10,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:12:10,280 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 16:12:10,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:12:10,305 INFO L192 MainTranslator]: Completed translation [2019-09-16 16:12:10,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10 WrapperNode [2019-09-16 16:12:10,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 16:12:10,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 16:12:10,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 16:12:10,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 16:12:10,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10" (1/1) ... [2019-09-16 16:12:10,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10" (1/1) ... [2019-09-16 16:12:10,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10" (1/1) ... [2019-09-16 16:12:10,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10" (1/1) ... [2019-09-16 16:12:10,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10" (1/1) ... [2019-09-16 16:12:10,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10" (1/1) ... [2019-09-16 16:12:10,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10" (1/1) ... [2019-09-16 16:12:10,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 16:12:10,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 16:12:10,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 16:12:10,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 16:12:10,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10" (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 [2019-09-16 16:12:10,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 16:12:10,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 16:12:10,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 16:12:10,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 16:12:10,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 16:12:10,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-16 16:12:10,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 16:12:10,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 16:12:10,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 16:12:10,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 16:12:10,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 16:12:10,654 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 16:12:10,655 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-16 16:12:10,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:12:10 BoogieIcfgContainer [2019-09-16 16:12:10,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 16:12:10,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 16:12:10,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 16:12:10,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 16:12:10,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 04:12:10" (1/3) ... [2019-09-16 16:12:10,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536a5dd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:12:10, skipping insertion in model container [2019-09-16 16:12:10,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:10" (2/3) ... [2019-09-16 16:12:10,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536a5dd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:12:10, skipping insertion in model container [2019-09-16 16:12:10,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:12:10" (3/3) ... [2019-09-16 16:12:10,667 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i [2019-09-16 16:12:10,678 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 16:12:10,683 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 16:12:10,698 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 16:12:10,724 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-16 16:12:10,724 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 16:12:10,724 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-16 16:12:10,725 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 16:12:10,725 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 16:12:10,725 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 16:12:10,725 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 16:12:10,725 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 16:12:10,725 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 16:12:10,739 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-16 16:12:10,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-16 16:12:10,743 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:10,744 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:10,746 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:10,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:10,751 INFO L82 PathProgramCache]: Analyzing trace with hash -741608086, now seen corresponding path program 1 times [2019-09-16 16:12:10,753 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:10,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:10,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:10,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:10,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:10,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:10,994 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:12:10,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 16:12:11,009 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 16:12:11,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 16:12:11,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 16:12:11,032 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2019-09-16 16:12:11,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:11,138 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2019-09-16 16:12:11,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 16:12:11,140 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-09-16 16:12:11,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:11,149 INFO L225 Difference]: With dead ends: 43 [2019-09-16 16:12:11,149 INFO L226 Difference]: Without dead ends: 21 [2019-09-16 16:12:11,153 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-16 16:12:11,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-16 16:12:11,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-16 16:12:11,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-16 16:12:11,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-09-16 16:12:11,190 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2019-09-16 16:12:11,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:11,191 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-09-16 16:12:11,192 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 16:12:11,192 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-09-16 16:12:11,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-16 16:12:11,193 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:11,193 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:11,193 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:11,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:11,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1356428647, now seen corresponding path program 1 times [2019-09-16 16:12:11,194 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:11,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:11,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:11,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:11,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:11,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:11,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:12:11,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 16:12:11,262 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 16:12:11,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 16:12:11,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 16:12:11,263 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2019-09-16 16:12:11,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:11,327 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-09-16 16:12:11,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 16:12:11,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-16 16:12:11,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:11,330 INFO L225 Difference]: With dead ends: 21 [2019-09-16 16:12:11,331 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 16:12:11,332 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-16 16:12:11,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 16:12:11,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 16:12:11,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 16:12:11,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 16:12:11,333 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-09-16 16:12:11,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:11,334 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 16:12:11,334 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 16:12:11,334 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 16:12:11,334 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 16:12:11,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-16 16:12:11,405 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-16 16:12:11,405 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-16 16:12:11,405 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-16 16:12:11,406 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-16 16:12:11,406 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-16 16:12:11,406 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-16 16:12:11,406 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2019-09-16 16:12:11,407 INFO L439 ceAbstractionStarter]: At program point L15(line 15) the Hoare annotation is: (and (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~nlen~0)) [2019-09-16 16:12:11,407 INFO L439 ceAbstractionStarter]: At program point L15-1(line 15) the Hoare annotation is: (and (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~nlen~0)) [2019-09-16 16:12:11,408 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2019-09-16 16:12:11,408 INFO L443 ceAbstractionStarter]: For program point L13-2(lines 13 18) no Hoare annotation was computed. [2019-09-16 16:12:11,408 INFO L439 ceAbstractionStarter]: At program point L13-3(lines 13 18) the Hoare annotation is: (<= 0 main_~i~0) [2019-09-16 16:12:11,409 INFO L443 ceAbstractionStarter]: For program point L13-4(lines 13 18) no Hoare annotation was computed. [2019-09-16 16:12:11,410 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2019-09-16 16:12:11,410 INFO L443 ceAbstractionStarter]: For program point L16(lines 14 17) no Hoare annotation was computed. [2019-09-16 16:12:11,410 INFO L439 ceAbstractionStarter]: At program point L14-2(lines 14 17) the Hoare annotation is: (and (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~nlen~0)) [2019-09-16 16:12:11,410 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-16 16:12:11,411 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-16 16:12:11,411 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-16 16:12:11,412 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-16 16:12:11,412 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-16 16:12:11,412 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-16 16:12:11,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 04:12:11 BoogieIcfgContainer [2019-09-16 16:12:11,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 16:12:11,429 INFO L168 Benchmark]: Toolchain (without parser) took 1415.46 ms. Allocated memory was 130.5 MB in the beginning and 196.1 MB in the end (delta: 65.5 MB). Free memory was 85.8 MB in the beginning and 120.2 MB in the end (delta: -34.4 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:11,431 INFO L168 Benchmark]: CDTParser took 0.23 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: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 16:12:11,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.41 ms. Allocated memory is still 130.5 MB. Free memory was 85.6 MB in the beginning and 76.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:11,433 INFO L168 Benchmark]: Boogie Preprocessor took 117.08 ms. Allocated memory was 130.5 MB in the beginning and 196.1 MB in the end (delta: 65.5 MB). Free memory was 76.2 MB in the beginning and 171.9 MB in the end (delta: -95.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:11,434 INFO L168 Benchmark]: RCFGBuilder took 232.03 ms. Allocated memory is still 196.1 MB. Free memory was 171.9 MB in the beginning and 160.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:11,435 INFO L168 Benchmark]: TraceAbstraction took 769.65 ms. Allocated memory is still 196.1 MB. Free memory was 160.0 MB in the beginning and 120.2 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:11,439 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 290.41 ms. Allocated memory is still 130.5 MB. Free memory was 85.6 MB in the beginning and 76.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.08 ms. Allocated memory was 130.5 MB in the beginning and 196.1 MB in the end (delta: 65.5 MB). Free memory was 76.2 MB in the beginning and 171.9 MB in the end (delta: -95.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 232.03 ms. Allocated memory is still 196.1 MB. Free memory was 171.9 MB in the beginning and 160.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 769.65 ms. Allocated memory is still 196.1 MB. Free memory was 160.0 MB in the beginning and 120.2 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 <= i && i + 1 <= nlen - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 <= i - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 14 SDslu, 82 SDs, 0 SdLazy, 33 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 16 NumberOfFragments, 35 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 675 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...