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/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 11:18:30,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 11:18:30,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 11:18:30,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 11:18:30,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 11:18:30,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 11:18:30,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 11:18:30,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 11:18:30,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 11:18:30,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 11:18:30,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 11:18:30,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-10-02 11:18:30,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 11:18:30,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 11:18:30,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 11:18:30,233 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 [2019-10-02 11:18:30,251 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 11:18:30,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 11:18:30,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 11:18:30,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 11:18:30,253 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 11:18:30,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 11:18:30,254 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 11:18:30,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 11:18:30,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 11:18:30,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 11:18:30,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 11:18:30,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 11:18:30,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 11:18:30,255 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 11:18:30,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 11:18:30,256 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 11:18:30,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 11:18:30,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 11:18:30,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 11:18:30,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 11:18:30,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 11:18:30,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 11:18:30,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 11:18:30,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 11:18:30,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 11:18:30,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 11:18:30,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 11:18:30,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 11:18:30,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 11:18:30,287 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 11:18:30,300 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 11:18:30,303 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 11:18:30,304 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 11:18:30,305 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 11:18:30,306 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2019-10-02 11:18:30,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f17e025/81372ac00ddd464d83ef6209188f7035/FLAG78cad0416 [2019-10-02 11:18:30,796 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 11:18:30,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested9.i [2019-10-02 11:18:30,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f17e025/81372ac00ddd464d83ef6209188f7035/FLAG78cad0416 [2019-10-02 11:18:31,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f17e025/81372ac00ddd464d83ef6209188f7035 [2019-10-02 11:18:31,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 11:18:31,212 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 11:18:31,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 11:18:31,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 11:18:31,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 11:18:31,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:18:31" (1/1) ... [2019-10-02 11:18:31,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39aa9343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:31, skipping insertion in model container [2019-10-02 11:18:31,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:18:31" (1/1) ... [2019-10-02 11:18:31,230 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 11:18:31,249 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 11:18:31,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:18:31,466 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 11:18:31,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:18:31,512 INFO L192 MainTranslator]: Completed translation [2019-10-02 11:18:31,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:31 WrapperNode [2019-10-02 11:18:31,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 11:18:31,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 11:18:31,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 11:18:31,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 11:18:31,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:31" (1/1) ... [2019-10-02 11:18:31,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:31" (1/1) ... [2019-10-02 11:18:31,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:31" (1/1) ... [2019-10-02 11:18:31,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:31" (1/1) ... [2019-10-02 11:18:31,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:31" (1/1) ... [2019-10-02 11:18:31,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:31" (1/1) ... [2019-10-02 11:18:31,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:31" (1/1) ... [2019-10-02 11:18:31,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 11:18:31,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 11:18:31,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 11:18:31,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 11:18:31,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 11:18:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 11:18:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 11:18:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 11:18:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 11:18:31,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 11:18:31,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 11:18:31,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 11:18:31,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 11:18:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 11:18:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 11:18:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 11:18:31,929 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 11:18:31,930 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-02 11:18:31,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:18:31 BoogieIcfgContainer [2019-10-02 11:18:31,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 11:18:31,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 11:18:31,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 11:18:31,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 11:18:31,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 11:18:31" (1/3) ... [2019-10-02 11:18:31,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d1ba37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:18:31, skipping insertion in model container [2019-10-02 11:18:31,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:31" (2/3) ... [2019-10-02 11:18:31,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d1ba37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:18:31, skipping insertion in model container [2019-10-02 11:18:31,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:18:31" (3/3) ... [2019-10-02 11:18:31,940 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2019-10-02 11:18:31,950 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 11:18:31,958 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 11:18:32,007 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 11:18:32,057 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 11:18:32,058 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 11:18:32,058 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 11:18:32,058 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 11:18:32,058 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 11:18:32,059 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 11:18:32,059 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 11:18:32,059 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 11:18:32,059 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 11:18:32,079 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-10-02 11:18:32,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-02 11:18:32,086 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:18:32,087 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:18:32,089 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:18:32,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:18:32,094 INFO L82 PathProgramCache]: Analyzing trace with hash -810471198, now seen corresponding path program 1 times [2019-10-02 11:18:32,096 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:18:32,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:18:32,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:32,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:18:32,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:18:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:18:32,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:18:32,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-02 11:18:32,388 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-02 11:18:32,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-02 11:18:32,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-02 11:18:32,402 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 8 states. [2019-10-02 11:18:32,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:18:32,660 INFO L93 Difference]: Finished difference Result 61 states and 86 transitions. [2019-10-02 11:18:32,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-02 11:18:32,662 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-10-02 11:18:32,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:18:32,672 INFO L225 Difference]: With dead ends: 61 [2019-10-02 11:18:32,672 INFO L226 Difference]: Without dead ends: 35 [2019-10-02 11:18:32,676 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-02 11:18:32,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-02 11:18:32,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-10-02 11:18:32,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-02 11:18:32,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2019-10-02 11:18:32,721 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 18 [2019-10-02 11:18:32,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:18:32,722 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2019-10-02 11:18:32,722 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-02 11:18:32,723 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2019-10-02 11:18:32,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-02 11:18:32,724 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:18:32,724 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:18:32,725 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:18:32,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:18:32,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1809643041, now seen corresponding path program 1 times [2019-10-02 11:18:32,726 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:18:32,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:18:32,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:32,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:18:32,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:18:32,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:18:32,852 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:18:32,852 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-10-02 11:18:32,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:18:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:18:32,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-02 11:18:32,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:18:33,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:18:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:18:33,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 11:18:33,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2019-10-02 11:18:33,070 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-02 11:18:33,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-02 11:18:33,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-10-02 11:18:33,071 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 13 states. [2019-10-02 11:18:33,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:18:33,560 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2019-10-02 11:18:33,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-02 11:18:33,560 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2019-10-02 11:18:33,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:18:33,561 INFO L225 Difference]: With dead ends: 62 [2019-10-02 11:18:33,561 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 11:18:33,563 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2019-10-02 11:18:33,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 11:18:33,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 11:18:33,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 11:18:33,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 11:18:33,565 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2019-10-02 11:18:33,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:18:33,565 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 11:18:33,565 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-02 11:18:33,565 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 11:18:33,566 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 11:18:33,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-02 11:18:33,784 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-02 11:18:33,785 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-02 11:18:33,785 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-02 11:18:33,785 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-02 11:18:33,786 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-02 11:18:33,786 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-02 11:18:33,786 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-02 11:18:33,786 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 26) no Hoare annotation was computed. [2019-10-02 11:18:33,787 INFO L439 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (let ((.cse1 (* 2 main_~n~0))) (let ((.cse0 (+ main_~i~0 .cse1))) (or (and (<= 0 main_~i~0) (<= (+ main_~k~0 6) .cse0) (<= (+ (* 2 main_~i~0) 1) main_~n~0) (<= (+ (* 2 main_~j~0) 4) (+ main_~i~0 main_~k~0 .cse1))) (and (<= (+ main_~j~0 2) .cse0) (<= 1 main_~i~0) (< main_~i~0 main_~n~0) (<= (+ main_~k~0 3) .cse0))))) [2019-10-02 11:18:33,787 INFO L443 ceAbstractionStarter]: For program point L23-1(lines 22 23) no Hoare annotation was computed. [2019-10-02 11:18:33,787 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-10-02 11:18:33,789 INFO L443 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-10-02 11:18:33,789 INFO L446 ceAbstractionStarter]: At program point L24(lines 11 26) the Hoare annotation is: true [2019-10-02 11:18:33,790 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 23) no Hoare annotation was computed. [2019-10-02 11:18:33,790 INFO L439 ceAbstractionStarter]: At program point L20-3(lines 20 23) the Hoare annotation is: (or (and (<= 0 main_~i~0) (<= main_~i~0 0)) (and (<= 1 main_~i~0) (<= 1 main_~n~0))) [2019-10-02 11:18:33,790 INFO L443 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2019-10-02 11:18:33,790 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2019-10-02 11:18:33,791 INFO L439 ceAbstractionStarter]: At program point L21-3(lines 21 23) the Hoare annotation is: (or (and (<= 0 main_~i~0) (<= (+ (* 2 main_~i~0) 1) main_~n~0)) (and (<= 1 main_~i~0) (< main_~i~0 main_~n~0))) [2019-10-02 11:18:33,792 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-10-02 11:18:33,792 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 26) no Hoare annotation was computed. [2019-10-02 11:18:33,792 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 11 26) the Hoare annotation is: true [2019-10-02 11:18:33,793 INFO L439 ceAbstractionStarter]: At program point L22-2(lines 22 23) the Hoare annotation is: (let ((.cse0 (* 2 main_~n~0))) (or (and (<= (+ main_~j~0 2) (+ main_~i~0 .cse0)) (<= 1 main_~i~0) (< main_~i~0 main_~n~0)) (and (<= 0 main_~i~0) (<= (+ (* 2 main_~i~0) 1) main_~n~0) (<= main_~i~0 0) (<= (+ (* 2 main_~j~0) 4) (+ main_~i~0 main_~k~0 .cse0))))) [2019-10-02 11:18:33,793 INFO L443 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-10-02 11:18:33,794 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-02 11:18:33,794 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-02 11:18:33,800 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-02 11:18:33,801 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-02 11:18:33,801 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-02 11:18:33,801 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-02 11:18:33,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 11:18:33 BoogieIcfgContainer [2019-10-02 11:18:33,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 11:18:33,827 INFO L168 Benchmark]: Toolchain (without parser) took 2613.90 ms. Allocated memory was 135.3 MB in the beginning and 226.5 MB in the end (delta: 91.2 MB). Free memory was 87.4 MB in the beginning and 133.4 MB in the end (delta: -46.0 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. [2019-10-02 11:18:33,828 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 135.3 MB. Free memory was 105.7 MB in the beginning and 105.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 11:18:33,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.21 ms. Allocated memory is still 135.3 MB. Free memory was 87.2 MB in the beginning and 77.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-10-02 11:18:33,831 INFO L168 Benchmark]: Boogie Preprocessor took 135.59 ms. Allocated memory was 135.3 MB in the beginning and 199.8 MB in the end (delta: 64.5 MB). Free memory was 77.3 MB in the beginning and 177.3 MB in the end (delta: -100.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2019-10-02 11:18:33,831 INFO L168 Benchmark]: RCFGBuilder took 282.04 ms. Allocated memory is still 199.8 MB. Free memory was 177.3 MB in the beginning and 163.4 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-10-02 11:18:33,833 INFO L168 Benchmark]: TraceAbstraction took 1891.48 ms. Allocated memory was 199.8 MB in the beginning and 226.5 MB in the end (delta: 26.7 MB). Free memory was 162.8 MB in the beginning and 133.4 MB in the end (delta: 29.4 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2019-10-02 11:18:33,837 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 135.3 MB. Free memory was 105.7 MB in the beginning and 105.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 300.21 ms. Allocated memory is still 135.3 MB. Free memory was 87.2 MB in the beginning and 77.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.59 ms. Allocated memory was 135.3 MB in the beginning and 199.8 MB in the end (delta: 64.5 MB). Free memory was 77.3 MB in the beginning and 177.3 MB in the end (delta: -100.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 282.04 ms. Allocated memory is still 199.8 MB. Free memory was 177.3 MB in the beginning and 163.4 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1891.48 ms. Allocated memory was 199.8 MB in the beginning and 226.5 MB in the end (delta: 26.7 MB). Free memory was 162.8 MB in the beginning and 133.4 MB in the end (delta: 29.4 MB). Peak memory consumption was 56.2 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: 20]: Loop Invariant Derived loop invariant: (0 <= i && i <= 0) || (1 <= i && 1 <= n) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (0 <= i && 2 * i + 1 <= n) || (1 <= i && i < n) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((j + 2 <= i + 2 * n && 1 <= i) && i < n) || (((0 <= i && 2 * i + 1 <= n) && i <= 0) && 2 * j + 4 <= i + k + 2 * n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 1 error locations. SAFE Result, 1.7s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 78 SDslu, 259 SDs, 0 SdLazy, 305 SolverSat, 67 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=1, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 14 PreInvPairs, 37 NumberOfFragments, 141 HoareAnnotationTreeSize, 14 FomulaSimplifications, 288 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 34 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 3130 SizeOfPredicates, 2 NumberOfNonLiveVariables, 57 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...