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/nested6.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 19:50:48,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 19:50:48,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 19:50:48,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 19:50:48,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 19:50:48,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 19:50:48,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 19:50:48,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 19:50:48,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 19:50:48,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 19:50:48,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 19:50:48,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 19:50:48,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 19:50:48,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 19:50:48,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 19:50:48,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 19:50:48,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 19:50:48,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 19:50:48,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 19:50:48,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 19:50:48,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 19:50:48,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 19:50:48,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 19:50:48,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 19:50:48,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 19:50:48,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 19:50:48,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 19:50:48,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 19:50:48,978 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 [2019-09-03 19:50:48,992 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 19:50:48,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 19:50:48,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 19:50:48,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 19:50:48,995 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 19:50:48,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 19:50:48,995 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 19:50:48,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 19:50:48,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 19:50:48,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 19:50:48,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 19:50:48,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 19:50:48,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 19:50:48,998 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 19:50:48,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 19:50:49,000 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 19:50:49,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 19:50:49,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 19:50:49,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 19:50:49,000 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 19:50:49,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 19:50:49,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 19:50:49,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 19:50:49,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 19:50:49,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 19:50:49,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 19:50:49,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 19:50:49,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 19:50:49,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 19:50:49,055 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 19:50:49,071 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 19:50:49,074 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 19:50:49,076 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 19:50:49,077 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 19:50:49,077 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2019-09-03 19:50:49,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bbc318e0/46c82a4f0f66412f9e4819ec1d2e5582/FLAGf47e526b7 [2019-09-03 19:50:49,600 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 19:50:49,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested6.i [2019-09-03 19:50:49,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bbc318e0/46c82a4f0f66412f9e4819ec1d2e5582/FLAGf47e526b7 [2019-09-03 19:50:49,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bbc318e0/46c82a4f0f66412f9e4819ec1d2e5582 [2019-09-03 19:50:49,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 19:50:49,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 19:50:49,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 19:50:49,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 19:50:49,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 19:50:49,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:50:49" (1/1) ... [2019-09-03 19:50:49,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fdff94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:49, skipping insertion in model container [2019-09-03 19:50:49,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:50:49" (1/1) ... [2019-09-03 19:50:49,971 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 19:50:49,988 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 19:50:50,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:50:50,173 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 19:50:50,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:50:50,201 INFO L192 MainTranslator]: Completed translation [2019-09-03 19:50:50,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50 WrapperNode [2019-09-03 19:50:50,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 19:50:50,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 19:50:50,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 19:50:50,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 19:50:50,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50" (1/1) ... [2019-09-03 19:50:50,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50" (1/1) ... [2019-09-03 19:50:50,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50" (1/1) ... [2019-09-03 19:50:50,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50" (1/1) ... [2019-09-03 19:50:50,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50" (1/1) ... [2019-09-03 19:50:50,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50" (1/1) ... [2019-09-03 19:50:50,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50" (1/1) ... [2019-09-03 19:50:50,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 19:50:50,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 19:50:50,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 19:50:50,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 19:50:50,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 19:50:50,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 19:50:50,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 19:50:50,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 19:50:50,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 19:50:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 19:50:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 19:50:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 19:50:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 19:50:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 19:50:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 19:50:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 19:50:50,617 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 19:50:50,618 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-03 19:50:50,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:50:50 BoogieIcfgContainer [2019-09-03 19:50:50,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 19:50:50,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 19:50:50,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 19:50:50,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 19:50:50,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 07:50:49" (1/3) ... [2019-09-03 19:50:50,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4981f30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:50:50, skipping insertion in model container [2019-09-03 19:50:50,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50" (2/3) ... [2019-09-03 19:50:50,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4981f30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:50:50, skipping insertion in model container [2019-09-03 19:50:50,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:50:50" (3/3) ... [2019-09-03 19:50:50,648 INFO L109 eAbstractionObserver]: Analyzing ICFG nested6.i [2019-09-03 19:50:50,661 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 19:50:50,670 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 19:50:50,688 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 19:50:50,720 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 19:50:50,721 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 19:50:50,721 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 19:50:50,721 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 19:50:50,721 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 19:50:50,721 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 19:50:50,722 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 19:50:50,722 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 19:50:50,722 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 19:50:50,741 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-09-03 19:50:50,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-03 19:50:50,748 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:50:50,749 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:50:50,751 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:50:50,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:50:50,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1213508388, now seen corresponding path program 1 times [2019-09-03 19:50:50,757 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:50:50,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:50:50,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:50,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:50:50,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:50:50,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:50:50,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:50:50,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 19:50:50,946 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 19:50:50,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 19:50:50,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 19:50:50,963 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2019-09-03 19:50:51,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:50:51,129 INFO L93 Difference]: Finished difference Result 57 states and 80 transitions. [2019-09-03 19:50:51,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-03 19:50:51,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-09-03 19:50:51,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:50:51,150 INFO L225 Difference]: With dead ends: 57 [2019-09-03 19:50:51,151 INFO L226 Difference]: Without dead ends: 28 [2019-09-03 19:50:51,158 INFO L628 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 [2019-09-03 19:50:51,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-09-03 19:50:51,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-09-03 19:50:51,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-09-03 19:50:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-09-03 19:50:51,237 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2019-09-03 19:50:51,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:50:51,238 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-09-03 19:50:51,238 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 19:50:51,239 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-09-03 19:50:51,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-03 19:50:51,241 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:50:51,241 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:50:51,242 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:50:51,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:50:51,245 INFO L82 PathProgramCache]: Analyzing trace with hash 542305890, now seen corresponding path program 1 times [2019-09-03 19:50:51,245 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:50:51,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:50:51,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:51,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:50:51,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:50:51,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:50:51,362 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:50:51,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-03 19:50:51,364 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-03 19:50:51,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-03 19:50:51,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-03 19:50:51,366 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2019-09-03 19:50:51,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:50:51,532 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-09-03 19:50:51,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-03 19:50:51,533 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-09-03 19:50:51,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:50:51,535 INFO L225 Difference]: With dead ends: 40 [2019-09-03 19:50:51,535 INFO L226 Difference]: Without dead ends: 38 [2019-09-03 19:50:51,536 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-03 19:50:51,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-09-03 19:50:51,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2019-09-03 19:50:51,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-09-03 19:50:51,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2019-09-03 19:50:51,545 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 16 [2019-09-03 19:50:51,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:50:51,546 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2019-09-03 19:50:51,546 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-03 19:50:51,546 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2019-09-03 19:50:51,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-03 19:50:51,547 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:50:51,547 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:50:51,547 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:50:51,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:50:51,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1063580357, now seen corresponding path program 1 times [2019-09-03 19:50:51,548 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:50:51,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:50:51,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:51,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:50:51,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:50:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:50:51,612 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:50:51,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 19:50:51,613 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 19:50:51,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 19:50:51,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 19:50:51,614 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 5 states. [2019-09-03 19:50:51,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:50:51,672 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2019-09-03 19:50:51,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-03 19:50:51,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-09-03 19:50:51,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:50:51,674 INFO L225 Difference]: With dead ends: 45 [2019-09-03 19:50:51,674 INFO L226 Difference]: Without dead ends: 43 [2019-09-03 19:50:51,675 INFO L628 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 [2019-09-03 19:50:51,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-03 19:50:51,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-09-03 19:50:51,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-09-03 19:50:51,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2019-09-03 19:50:51,687 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 20 [2019-09-03 19:50:51,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:50:51,687 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2019-09-03 19:50:51,688 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 19:50:51,688 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2019-09-03 19:50:51,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-03 19:50:51,689 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:50:51,689 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:50:51,690 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:50:51,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:50:51,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1462671860, now seen corresponding path program 1 times [2019-09-03 19:50:51,690 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:50:51,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:50:51,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:51,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:50:51,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:50:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:50:51,793 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:50:51,793 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) [2019-09-03 19:50:51,809 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 [2019-09-03 19:50:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:50:51,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-03 19:50:51,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:50:51,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-03 19:50:51,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-03 19:50:51,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2019-09-03 19:50:51,953 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-03 19:50:51,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-03 19:50:51,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-03 19:50:51,954 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 9 states. [2019-09-03 19:50:52,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:50:52,376 INFO L93 Difference]: Finished difference Result 108 states and 140 transitions. [2019-09-03 19:50:52,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-03 19:50:52,377 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-09-03 19:50:52,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:50:52,378 INFO L225 Difference]: With dead ends: 108 [2019-09-03 19:50:52,378 INFO L226 Difference]: Without dead ends: 73 [2019-09-03 19:50:52,379 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2019-09-03 19:50:52,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-09-03 19:50:52,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 46. [2019-09-03 19:50:52,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-09-03 19:50:52,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2019-09-03 19:50:52,393 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 24 [2019-09-03 19:50:52,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:50:52,393 INFO L475 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2019-09-03 19:50:52,393 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-03 19:50:52,393 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2019-09-03 19:50:52,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-03 19:50:52,394 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:50:52,395 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:50:52,395 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:50:52,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:50:52,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1830678608, now seen corresponding path program 1 times [2019-09-03 19:50:52,396 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:50:52,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:50:52,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:52,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:50:52,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:50:52,457 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-03 19:50:52,457 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:50:52,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-03 19:50:52,458 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-03 19:50:52,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-03 19:50:52,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-03 19:50:52,459 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 6 states. [2019-09-03 19:50:52,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:50:52,529 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2019-09-03 19:50:52,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-03 19:50:52,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2019-09-03 19:50:52,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:50:52,531 INFO L225 Difference]: With dead ends: 46 [2019-09-03 19:50:52,531 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 19:50:52,532 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-03 19:50:52,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 19:50:52,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 19:50:52,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 19:50:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 19:50:52,533 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2019-09-03 19:50:52,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:50:52,533 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 19:50:52,533 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-03 19:50:52,533 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 19:50:52,534 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 19:50:52,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-03 19:50:52,845 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-03 19:50:52,845 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:50:52,846 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:50:52,846 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-03 19:50:52,846 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-03 19:50:52,846 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-03 19:50:52,846 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2019-09-03 19:50:52,847 INFO L439 ceAbstractionStarter]: At program point L27-1(line 27) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2019-09-03 19:50:52,847 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 34) no Hoare annotation was computed. [2019-09-03 19:50:52,847 INFO L439 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= .cse0 main_~j~0) (<= (+ main_~j~0 1) main_~n~0) (<= .cse0 main_~k~0) (<= (+ main_~k~0 1) main_~n~0))) [2019-09-03 19:50:52,848 INFO L443 ceAbstractionStarter]: For program point L23-1(lines 22 24) no Hoare annotation was computed. [2019-09-03 19:50:52,848 INFO L443 ceAbstractionStarter]: For program point L19-2(lines 19 31) no Hoare annotation was computed. [2019-09-03 19:50:52,848 INFO L439 ceAbstractionStarter]: At program point L19-3(lines 19 31) the Hoare annotation is: (and (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2019-09-03 19:50:52,849 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 18) no Hoare annotation was computed. [2019-09-03 19:50:52,849 INFO L443 ceAbstractionStarter]: For program point L15-1(lines 15 18) no Hoare annotation was computed. [2019-09-03 19:50:52,849 INFO L446 ceAbstractionStarter]: At program point L32(lines 10 34) the Hoare annotation is: true [2019-09-03 19:50:52,849 INFO L443 ceAbstractionStarter]: For program point L28(lines 20 30) no Hoare annotation was computed. [2019-09-03 19:50:52,849 INFO L439 ceAbstractionStarter]: At program point L20-2(lines 20 30) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2019-09-03 19:50:52,849 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 29) no Hoare annotation was computed. [2019-09-03 19:50:52,849 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 34) no Hoare annotation was computed. [2019-09-03 19:50:52,850 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 34) the Hoare annotation is: true [2019-09-03 19:50:52,850 INFO L439 ceAbstractionStarter]: At program point L22-2(lines 22 24) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= .cse0 main_~j~0) (<= (+ main_~j~0 1) main_~n~0) (<= .cse0 main_~k~0) (<= main_~k~0 main_~n~0))) [2019-09-03 19:50:52,850 INFO L443 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-09-03 19:50:52,851 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-03 19:50:52,852 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-03 19:50:52,853 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-03 19:50:52,853 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-03 19:50:52,853 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-03 19:50:52,853 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-03 19:50:52,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 07:50:52 BoogieIcfgContainer [2019-09-03 19:50:52,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 19:50:52,878 INFO L168 Benchmark]: Toolchain (without parser) took 2922.05 ms. Allocated memory was 133.2 MB in the beginning and 226.0 MB in the end (delta: 92.8 MB). Free memory was 88.3 MB in the beginning and 124.8 MB in the end (delta: -36.5 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. [2019-09-03 19:50:52,879 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 133.2 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 19:50:52,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.72 ms. Allocated memory is still 133.2 MB. Free memory was 88.1 MB in the beginning and 78.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-03 19:50:52,881 INFO L168 Benchmark]: Boogie Preprocessor took 139.29 ms. Allocated memory was 133.2 MB in the beginning and 200.8 MB in the end (delta: 67.6 MB). Free memory was 78.7 MB in the beginning and 177.4 MB in the end (delta: -98.7 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2019-09-03 19:50:52,882 INFO L168 Benchmark]: RCFGBuilder took 280.94 ms. Allocated memory is still 200.8 MB. Free memory was 177.4 MB in the beginning and 164.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2019-09-03 19:50:52,885 INFO L168 Benchmark]: TraceAbstraction took 2250.36 ms. Allocated memory was 200.8 MB in the beginning and 226.0 MB in the end (delta: 25.2 MB). Free memory was 163.6 MB in the beginning and 124.8 MB in the end (delta: 38.8 MB). Peak memory consumption was 63.9 MB. Max. memory is 7.1 GB. [2019-09-03 19:50:52,891 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 133.2 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 246.72 ms. Allocated memory is still 133.2 MB. Free memory was 88.1 MB in the beginning and 78.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.29 ms. Allocated memory was 133.2 MB in the beginning and 200.8 MB in the end (delta: 67.6 MB). Free memory was 78.7 MB in the beginning and 177.4 MB in the end (delta: -98.7 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 280.94 ms. Allocated memory is still 200.8 MB. Free memory was 177.4 MB in the beginning and 164.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2250.36 ms. Allocated memory was 200.8 MB in the beginning and 226.0 MB in the end (delta: 25.2 MB). Free memory was 163.6 MB in the beginning and 124.8 MB in the end (delta: 38.8 MB). Peak memory consumption was 63.9 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: 20]: Loop Invariant Derived loop invariant: (2 * i <= j && k <= n) && n <= k - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((2 * i <= j && j + 1 <= n) && 2 * i <= k) && k <= n - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: k <= n && n <= k - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 1 error locations. SAFE Result, 2.1s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 136 SDtfs, 72 SDslu, 384 SDs, 0 SdLazy, 263 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=4, 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, 5 MinimizatonAttempts, 33 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 24 PreInvPairs, 38 NumberOfFragments, 103 HoareAnnotationTreeSize, 24 FomulaSimplifications, 498 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 260 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 124 ConstructedInterpolants, 1 QuantifiedInterpolants, 6440 SizeOfPredicates, 4 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 19/21 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...