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-lit/bhmr2007.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 03:01:16,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 03:01:16,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 03:01:16,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-08 03:01:16,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 03:01:16,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 03:01:16,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 03:01:16,157 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 [2019-09-08 03:01:16,177 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 03:01:16,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 03:01:16,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 03:01:16,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 03:01:16,180 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 03:01:16,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 03:01:16,180 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 03:01:16,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 03:01:16,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 03:01:16,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 03:01:16,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 03:01:16,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 03:01:16,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 03:01:16,182 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 03:01:16,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 03:01:16,182 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 03:01:16,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 03:01:16,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 03:01:16,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 03:01:16,183 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 03:01:16,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 03:01:16,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 03:01:16,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 03:01:16,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 03:01:16,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 03:01:16,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 03:01:16,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 03:01:16,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 03:01:16,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 03:01:16,220 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 03:01:16,231 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 03:01:16,234 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 03:01:16,235 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 03:01:16,236 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 03:01:16,236 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/bhmr2007.i [2019-09-08 03:01:16,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25fc677a1/37dbe1cde1f145d4b5138fa209cba84e/FLAGc595e4348 [2019-09-08 03:01:16,710 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 03:01:16,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/bhmr2007.i [2019-09-08 03:01:16,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25fc677a1/37dbe1cde1f145d4b5138fa209cba84e/FLAGc595e4348 [2019-09-08 03:01:17,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25fc677a1/37dbe1cde1f145d4b5138fa209cba84e [2019-09-08 03:01:17,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 03:01:17,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 03:01:17,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 03:01:17,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 03:01:17,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 03:01:17,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 03:01:17" (1/1) ... [2019-09-08 03:01:17,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ebfcada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:17, skipping insertion in model container [2019-09-08 03:01:17,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 03:01:17" (1/1) ... [2019-09-08 03:01:17,139 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 03:01:17,152 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 03:01:17,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 03:01:17,320 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 03:01:17,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 03:01:17,345 INFO L192 MainTranslator]: Completed translation [2019-09-08 03:01:17,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:17 WrapperNode [2019-09-08 03:01:17,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 03:01:17,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 03:01:17,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 03:01:17,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 03:01:17,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:17" (1/1) ... [2019-09-08 03:01:17,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:17" (1/1) ... [2019-09-08 03:01:17,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:17" (1/1) ... [2019-09-08 03:01:17,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:17" (1/1) ... [2019-09-08 03:01:17,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:17" (1/1) ... [2019-09-08 03:01:17,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:17" (1/1) ... [2019-09-08 03:01:17,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:17" (1/1) ... [2019-09-08 03:01:17,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 03:01:17,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 03:01:17,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 03:01:17,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 03:01:17,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:17" (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 [2019-09-08 03:01:17,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 03:01:17,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 03:01:17,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-08 03:01:17,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 03:01:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 03:01:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 03:01:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-08 03:01:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 03:01:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 03:01:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 03:01:17,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 03:01:17,687 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 03:01:17,687 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 03:01:17,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 03:01:17 BoogieIcfgContainer [2019-09-08 03:01:17,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 03:01:17,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 03:01:17,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 03:01:17,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 03:01:17,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 03:01:17" (1/3) ... [2019-09-08 03:01:17,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76cbaf95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 03:01:17, skipping insertion in model container [2019-09-08 03:01:17,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:01:17" (2/3) ... [2019-09-08 03:01:17,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76cbaf95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 03:01:17, skipping insertion in model container [2019-09-08 03:01:17,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 03:01:17" (3/3) ... [2019-09-08 03:01:17,697 INFO L109 eAbstractionObserver]: Analyzing ICFG bhmr2007.i [2019-09-08 03:01:17,716 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 03:01:17,731 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 03:01:17,753 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 03:01:17,790 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 03:01:17,791 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 03:01:17,791 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 03:01:17,792 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 03:01:17,792 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 03:01:17,792 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 03:01:17,792 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 03:01:17,792 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 03:01:17,793 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 03:01:17,814 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-09-08 03:01:17,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-08 03:01:17,820 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:01:17,821 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:01:17,824 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:01:17,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:01:17,829 INFO L82 PathProgramCache]: Analyzing trace with hash 439143249, now seen corresponding path program 1 times [2019-09-08 03:01:17,831 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:01:17,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:01:17,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:17,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:01:17,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:01:17,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 03:01:17,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 03:01:17,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 03:01:17,943 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 03:01:17,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 03:01:17,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 03:01:17,955 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-09-08 03:01:17,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:01:17,977 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-09-08 03:01:17,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 03:01:17,979 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-08 03:01:17,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:01:17,987 INFO L225 Difference]: With dead ends: 33 [2019-09-08 03:01:17,987 INFO L226 Difference]: Without dead ends: 14 [2019-09-08 03:01:17,990 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 03:01:18,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-09-08 03:01:18,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-09-08 03:01:18,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-08 03:01:18,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-09-08 03:01:18,028 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2019-09-08 03:01:18,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:01:18,028 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-09-08 03:01:18,029 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 03:01:18,029 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-09-08 03:01:18,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-08 03:01:18,029 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:01:18,030 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:01:18,030 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:01:18,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:01:18,031 INFO L82 PathProgramCache]: Analyzing trace with hash 428984518, now seen corresponding path program 1 times [2019-09-08 03:01:18,031 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:01:18,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:01:18,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:18,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:01:18,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:01:18,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 03:01:18,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 03:01:18,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 03:01:18,281 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 03:01:18,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 03:01:18,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-08 03:01:18,286 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 7 states. [2019-09-08 03:01:18,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:01:18,367 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-09-08 03:01:18,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 03:01:18,368 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-09-08 03:01:18,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:01:18,370 INFO L225 Difference]: With dead ends: 21 [2019-09-08 03:01:18,371 INFO L226 Difference]: Without dead ends: 16 [2019-09-08 03:01:18,372 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-09-08 03:01:18,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-08 03:01:18,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-09-08 03:01:18,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-08 03:01:18,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-09-08 03:01:18,378 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2019-09-08 03:01:18,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:01:18,380 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-09-08 03:01:18,380 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 03:01:18,380 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-09-08 03:01:18,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-08 03:01:18,381 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:01:18,381 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:01:18,381 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:01:18,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:01:18,382 INFO L82 PathProgramCache]: Analyzing trace with hash -277157879, now seen corresponding path program 1 times [2019-09-08 03:01:18,382 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:01:18,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:01:18,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:18,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:01:18,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:01:18,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 03:01:18,601 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 03:01:18,601 INFO L223 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 03:01:18,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:01:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:01:18,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-08 03:01:18,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:01:18,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 03:01:18,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 03:01:18,845 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 03:01:18,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-09-08 03:01:18,861 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-08 03:01:18,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-08 03:01:18,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2019-09-08 03:01:18,864 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 16 states. [2019-09-08 03:01:19,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:01:19,169 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2019-09-08 03:01:19,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-08 03:01:19,171 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 14 [2019-09-08 03:01:19,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:01:19,172 INFO L225 Difference]: With dead ends: 28 [2019-09-08 03:01:19,172 INFO L226 Difference]: Without dead ends: 22 [2019-09-08 03:01:19,173 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2019-09-08 03:01:19,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-08 03:01:19,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2019-09-08 03:01:19,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-08 03:01:19,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-09-08 03:01:19,179 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 14 [2019-09-08 03:01:19,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:01:19,179 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-09-08 03:01:19,179 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-08 03:01:19,179 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-09-08 03:01:19,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-08 03:01:19,180 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 03:01:19,180 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 03:01:19,181 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 03:01:19,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 03:01:19,181 INFO L82 PathProgramCache]: Analyzing trace with hash -608518108, now seen corresponding path program 1 times [2019-09-08 03:01:19,181 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 03:01:19,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 03:01:19,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:19,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 03:01:19,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 03:01:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:01:19,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-08 03:01:19,383 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 03:01:19,383 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 03:01:19,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 03:01:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 03:01:19,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 25 conjunts are in the unsatisfiable core [2019-09-08 03:01:19,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 03:01:19,573 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 03:01:19,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 03:01:19,627 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 03:01:19,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2019-09-08 03:01:19,628 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-08 03:01:19,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-08 03:01:19,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2019-09-08 03:01:19,629 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 19 states. [2019-09-08 03:01:20,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 03:01:20,104 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2019-09-08 03:01:20,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-08 03:01:20,104 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 17 [2019-09-08 03:01:20,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 03:01:20,105 INFO L225 Difference]: With dead ends: 28 [2019-09-08 03:01:20,105 INFO L226 Difference]: Without dead ends: 0 [2019-09-08 03:01:20,107 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2019-09-08 03:01:20,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-08 03:01:20,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-08 03:01:20,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-08 03:01:20,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-08 03:01:20,108 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-09-08 03:01:20,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 03:01:20,108 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-08 03:01:20,109 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-08 03:01:20,109 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-08 03:01:20,109 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-08 03:01:20,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-08 03:01:20,221 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-08 03:01:20,221 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-08 03:01:20,221 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-08 03:01:20,222 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-08 03:01:20,222 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-08 03:01:20,222 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-08 03:01:20,222 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 26) the Hoare annotation is: true [2019-09-08 03:01:20,222 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 26) no Hoare annotation was computed. [2019-09-08 03:01:20,222 INFO L443 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2019-09-08 03:01:20,222 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 21) no Hoare annotation was computed. [2019-09-08 03:01:20,223 INFO L443 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-09-08 03:01:20,223 INFO L443 ceAbstractionStarter]: For program point L15-2(lines 15 21) no Hoare annotation was computed. [2019-09-08 03:01:20,223 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 26) no Hoare annotation was computed. [2019-09-08 03:01:20,223 INFO L439 ceAbstractionStarter]: At program point L14-2(lines 14 23) the Hoare annotation is: (let ((.cse1 (* 3 main_~i~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse0 (* 3 main_~n~0)))) [2019-09-08 03:01:20,223 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 23) the Hoare annotation is: (let ((.cse1 (* 3 main_~n~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2019-09-08 03:01:20,224 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-08 03:01:20,224 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-08 03:01:20,224 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-08 03:01:20,224 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-08 03:01:20,224 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-08 03:01:20,224 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-08 03:01:20,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 03:01:20 BoogieIcfgContainer [2019-09-08 03:01:20,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 03:01:20,241 INFO L168 Benchmark]: Toolchain (without parser) took 3115.85 ms. Allocated memory was 135.8 MB in the beginning and 252.2 MB in the end (delta: 116.4 MB). Free memory was 90.6 MB in the beginning and 200.8 MB in the end (delta: -110.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 7.1 GB. [2019-09-08 03:01:20,242 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 135.8 MB. Free memory was 109.1 MB in the beginning and 108.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 03:01:20,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.32 ms. Allocated memory is still 135.8 MB. Free memory was 90.4 MB in the beginning and 81.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-09-08 03:01:20,244 INFO L168 Benchmark]: Boogie Preprocessor took 108.55 ms. Allocated memory was 135.8 MB in the beginning and 202.4 MB in the end (delta: 66.6 MB). Free memory was 81.2 MB in the beginning and 179.1 MB in the end (delta: -97.9 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2019-09-08 03:01:20,245 INFO L168 Benchmark]: RCFGBuilder took 233.01 ms. Allocated memory is still 202.4 MB. Free memory was 179.1 MB in the beginning and 168.1 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-09-08 03:01:20,246 INFO L168 Benchmark]: TraceAbstraction took 2548.49 ms. Allocated memory was 202.4 MB in the beginning and 252.2 MB in the end (delta: 49.8 MB). Free memory was 167.5 MB in the beginning and 200.8 MB in the end (delta: -33.3 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2019-09-08 03:01:20,251 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 135.8 MB. Free memory was 109.1 MB in the beginning and 108.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 221.32 ms. Allocated memory is still 135.8 MB. Free memory was 90.4 MB in the beginning and 81.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.55 ms. Allocated memory was 135.8 MB in the beginning and 202.4 MB in the end (delta: 66.6 MB). Free memory was 81.2 MB in the beginning and 179.1 MB in the end (delta: -97.9 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 233.01 ms. Allocated memory is still 202.4 MB. Free memory was 179.1 MB in the beginning and 168.1 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2548.49 ms. Allocated memory was 202.4 MB in the beginning and 252.2 MB in the end (delta: 49.8 MB). Free memory was 167.5 MB in the beginning and 200.8 MB in the end (delta: -33.3 MB). Peak memory consumption was 16.6 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: (a + b <= 3 * i && 3 * i <= a + b) && a + b <= 3 * n - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 2.4s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 48 SDtfs, 24 SDslu, 143 SDs, 0 SdLazy, 279 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 21 NumberOfFragments, 42 HoareAnnotationTreeSize, 12 FomulaSimplifications, 97 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 145 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 8129 SizeOfPredicates, 6 NumberOfNonLiveVariables, 95 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...