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-fea9116 [2019-09-20 12:58:15,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 12:58:15,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 12:58:15,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 12:58:15,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 12:58:15,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 12:58:15,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 12:58:15,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 12:58:15,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 12:58:15,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 12:58:15,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 12:58:15,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 12:58:15,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 12:58:15,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 12:58:15,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 12:58:15,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 12:58:15,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 12:58:15,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 12:58:15,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 12:58:15,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 12:58:15,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 12:58:15,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 12:58:15,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 12:58:15,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 12:58:15,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 12:58:15,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 12:58:15,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 12:58:15,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 12:58:15,401 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 [2019-09-20 12:58:15,429 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 12:58:15,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 12:58:15,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 12:58:15,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 12:58:15,431 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 12:58:15,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 12:58:15,432 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 12:58:15,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 12:58:15,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 12:58:15,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 12:58:15,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 12:58:15,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 12:58:15,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 12:58:15,433 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 12:58:15,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 12:58:15,433 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 12:58:15,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 12:58:15,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 12:58:15,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 12:58:15,434 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 12:58:15,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 12:58:15,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 12:58:15,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 12:58:15,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 12:58:15,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 12:58:15,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 12:58:15,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 12:58:15,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 12:58:15,436 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 12:58:15,464 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 12:58:15,476 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 12:58:15,480 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 12:58:15,481 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 12:58:15,482 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 12:58:15,482 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i [2019-09-20 12:58:15,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af759f251/69173a3b14a241648b173be60be9b440/FLAGb9362364a [2019-09-20 12:58:15,984 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 12:58:15,985 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i [2019-09-20 12:58:15,991 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af759f251/69173a3b14a241648b173be60be9b440/FLAGb9362364a [2019-09-20 12:58:16,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af759f251/69173a3b14a241648b173be60be9b440 [2019-09-20 12:58:16,386 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 12:58:16,387 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 12:58:16,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 12:58:16,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 12:58:16,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 12:58:16,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:58:16" (1/1) ... [2019-09-20 12:58:16,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c19cb95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:16, skipping insertion in model container [2019-09-20 12:58:16,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:58:16" (1/1) ... [2019-09-20 12:58:16,404 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 12:58:16,425 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 12:58:16,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:58:16,699 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 12:58:16,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:58:16,734 INFO L192 MainTranslator]: Completed translation [2019-09-20 12:58:16,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:16 WrapperNode [2019-09-20 12:58:16,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 12:58:16,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 12:58:16,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 12:58:16,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 12:58:16,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:16" (1/1) ... [2019-09-20 12:58:16,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:16" (1/1) ... [2019-09-20 12:58:16,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:16" (1/1) ... [2019-09-20 12:58:16,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:16" (1/1) ... [2019-09-20 12:58:16,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:16" (1/1) ... [2019-09-20 12:58:16,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:16" (1/1) ... [2019-09-20 12:58:16,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:16" (1/1) ... [2019-09-20 12:58:16,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 12:58:16,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 12:58:16,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 12:58:16,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 12:58:16,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 12:58:16,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 12:58:16,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 12:58:16,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 12:58:16,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 12:58:16,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 12:58:16,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 12:58:16,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 12:58:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 12:58:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 12:58:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 12:58:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 12:58:17,158 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 12:58:17,158 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-20 12:58:17,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:58:17 BoogieIcfgContainer [2019-09-20 12:58:17,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 12:58:17,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 12:58:17,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 12:58:17,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 12:58:17,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:58:16" (1/3) ... [2019-09-20 12:58:17,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291b75a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:58:17, skipping insertion in model container [2019-09-20 12:58:17,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:16" (2/3) ... [2019-09-20 12:58:17,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291b75a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:58:17, skipping insertion in model container [2019-09-20 12:58:17,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:58:17" (3/3) ... [2019-09-20 12:58:17,187 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i [2019-09-20 12:58:17,204 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 12:58:17,213 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 12:58:17,230 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 12:58:17,263 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 12:58:17,264 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 12:58:17,264 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 12:58:17,264 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 12:58:17,264 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 12:58:17,265 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 12:58:17,265 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 12:58:17,265 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 12:58:17,265 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 12:58:17,284 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-20 12:58:17,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-20 12:58:17,289 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:17,290 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:17,292 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:17,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:17,299 INFO L82 PathProgramCache]: Analyzing trace with hash -741608086, now seen corresponding path program 1 times [2019-09-20 12:58:17,301 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:17,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:17,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:17,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:17,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:17,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:17,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:58:17,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 12:58:17,487 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 12:58:17,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 12:58:17,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 12:58:17,501 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2019-09-20 12:58:17,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:17,598 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2019-09-20 12:58:17,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 12:58:17,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-09-20 12:58:17,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:17,607 INFO L225 Difference]: With dead ends: 43 [2019-09-20 12:58:17,608 INFO L226 Difference]: Without dead ends: 21 [2019-09-20 12:58:17,611 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 [2019-09-20 12:58:17,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-20 12:58:17,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-20 12:58:17,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-20 12:58:17,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-09-20 12:58:17,648 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2019-09-20 12:58:17,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:17,649 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-09-20 12:58:17,649 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 12:58:17,649 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-09-20 12:58:17,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-20 12:58:17,650 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:17,650 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:17,651 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:17,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:17,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1356428647, now seen corresponding path program 1 times [2019-09-20 12:58:17,652 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:17,652 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:17,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:17,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:17,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:17,734 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:58:17,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 12:58:17,739 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 12:58:17,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 12:58:17,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 12:58:17,740 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2019-09-20 12:58:17,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:17,797 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-09-20 12:58:17,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 12:58:17,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-20 12:58:17,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:17,799 INFO L225 Difference]: With dead ends: 21 [2019-09-20 12:58:17,799 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 12:58:17,800 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 [2019-09-20 12:58:17,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 12:58:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 12:58:17,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 12:58:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 12:58:17,802 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-09-20 12:58:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:17,802 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 12:58:17,802 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 12:58:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 12:58:17,803 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 12:58:17,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 12:58:17,857 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-20 12:58:17,857 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-20 12:58:17,857 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-20 12:58:17,857 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-20 12:58:17,858 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-20 12:58:17,858 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-20 12:58:17,858 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2019-09-20 12:58:17,859 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)) [2019-09-20 12:58:17,859 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)) [2019-09-20 12:58:17,859 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2019-09-20 12:58:17,859 INFO L443 ceAbstractionStarter]: For program point L13-2(lines 13 18) no Hoare annotation was computed. [2019-09-20 12:58:17,860 INFO L439 ceAbstractionStarter]: At program point L13-3(lines 13 18) the Hoare annotation is: (<= 0 main_~i~0) [2019-09-20 12:58:17,860 INFO L443 ceAbstractionStarter]: For program point L13-4(lines 13 18) no Hoare annotation was computed. [2019-09-20 12:58:17,860 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2019-09-20 12:58:17,860 INFO L443 ceAbstractionStarter]: For program point L16(lines 14 17) no Hoare annotation was computed. [2019-09-20 12:58:17,861 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)) [2019-09-20 12:58:17,861 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-20 12:58:17,861 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-20 12:58:17,861 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-20 12:58:17,862 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-20 12:58:17,862 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-20 12:58:17,862 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-20 12:58:17,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 12:58:17 BoogieIcfgContainer [2019-09-20 12:58:17,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 12:58:17,880 INFO L168 Benchmark]: Toolchain (without parser) took 1491.91 ms. Allocated memory was 131.1 MB in the beginning and 200.8 MB in the end (delta: 69.7 MB). Free memory was 86.8 MB in the beginning and 124.5 MB in the end (delta: -37.7 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:17,881 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 131.1 MB. Free memory was 105.3 MB in the beginning and 105.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 12:58:17,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.95 ms. Allocated memory is still 131.1 MB. Free memory was 86.6 MB in the beginning and 77.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:17,884 INFO L168 Benchmark]: Boogie Preprocessor took 169.31 ms. Allocated memory was 131.1 MB in the beginning and 200.8 MB in the end (delta: 69.7 MB). Free memory was 77.3 MB in the beginning and 177.1 MB in the end (delta: -99.8 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:17,885 INFO L168 Benchmark]: RCFGBuilder took 256.75 ms. Allocated memory is still 200.8 MB. Free memory was 177.1 MB in the beginning and 165.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:17,886 INFO L168 Benchmark]: TraceAbstraction took 713.80 ms. Allocated memory is still 200.8 MB. Free memory was 164.5 MB in the beginning and 124.5 MB in the end (delta: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:17,890 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 131.1 MB. Free memory was 105.3 MB in the beginning and 105.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 346.95 ms. Allocated memory is still 131.1 MB. Free memory was 86.6 MB in the beginning and 77.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 169.31 ms. Allocated memory was 131.1 MB in the beginning and 200.8 MB in the end (delta: 69.7 MB). Free memory was 77.3 MB in the beginning and 177.1 MB in the end (delta: -99.8 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 256.75 ms. Allocated memory is still 200.8 MB. Free memory was 177.1 MB in the beginning and 165.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 713.80 ms. Allocated memory is still 200.8 MB. Free memory was 164.5 MB in the beginning and 124.5 MB in the end (delta: 39.9 MB). Peak memory consumption was 39.9 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, 0.1s 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, 0.0s 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, 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...