java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/trex04_true-unreach-call_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 15:40:12,919 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 15:40:12,922 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 15:40:12,935 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 15:40:12,936 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 15:40:12,937 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 15:40:12,939 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 15:40:12,941 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 15:40:12,943 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 15:40:12,944 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 15:40:12,945 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 15:40:12,945 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 15:40:12,946 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 15:40:12,948 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 15:40:12,949 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 15:40:12,950 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 15:40:12,951 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 15:40:12,953 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 15:40:12,956 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 15:40:12,958 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 15:40:12,959 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 15:40:12,961 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 15:40:12,966 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-22 15:40:12,986 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-22 15:40:13,023 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 15:40:13,025 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 15:40:13,026 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 15:40:13,026 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-22 15:40:13,027 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-22 15:40:13,031 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-22 15:40:13,031 INFO L133 SettingsManager]: * Use SBE=true [2018-10-22 15:40:13,031 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 15:40:13,032 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 15:40:13,032 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 15:40:13,033 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 15:40:13,033 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 15:40:13,033 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 15:40:13,033 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 15:40:13,033 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 15:40:13,034 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 15:40:13,034 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 15:40:13,034 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 15:40:13,034 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 15:40:13,034 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:40:13,035 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 15:40:13,036 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 15:40:13,037 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 15:40:13,037 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-22 15:40:13,037 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 15:40:13,037 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 15:40:13,037 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 15:40:13,038 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 15:40:13,113 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 15:40:13,136 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 15:40:13,140 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 15:40:13,142 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 15:40:13,143 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 15:40:13,144 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/trex04_true-unreach-call_false-termination.i [2018-10-22 15:40:13,215 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4274a88f1/814074ff2d0b47fc8b3eef89a749bab6/FLAG5f2d749ce [2018-10-22 15:40:13,704 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 15:40:13,705 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex04_true-unreach-call_false-termination.i [2018-10-22 15:40:13,714 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4274a88f1/814074ff2d0b47fc8b3eef89a749bab6/FLAG5f2d749ce [2018-10-22 15:40:13,732 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4274a88f1/814074ff2d0b47fc8b3eef89a749bab6 [2018-10-22 15:40:13,746 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 15:40:13,748 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 15:40:13,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 15:40:13,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 15:40:13,754 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 15:40:13,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:40:13" (1/1) ... [2018-10-22 15:40:13,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68be6b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:13, skipping insertion in model container [2018-10-22 15:40:13,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:40:13" (1/1) ... [2018-10-22 15:40:13,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 15:40:13,795 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 15:40:14,017 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:40:14,022 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 15:40:14,046 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:40:14,066 INFO L193 MainTranslator]: Completed translation [2018-10-22 15:40:14,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:14 WrapperNode [2018-10-22 15:40:14,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 15:40:14,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 15:40:14,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 15:40:14,069 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 15:40:14,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:14" (1/1) ... [2018-10-22 15:40:14,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:14" (1/1) ... [2018-10-22 15:40:14,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 15:40:14,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 15:40:14,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 15:40:14,113 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 15:40:14,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:14" (1/1) ... [2018-10-22 15:40:14,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:14" (1/1) ... [2018-10-22 15:40:14,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:14" (1/1) ... [2018-10-22 15:40:14,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:14" (1/1) ... [2018-10-22 15:40:14,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:14" (1/1) ... [2018-10-22 15:40:14,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:14" (1/1) ... [2018-10-22 15:40:14,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:14" (1/1) ... [2018-10-22 15:40:14,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 15:40:14,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 15:40:14,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 15:40:14,137 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 15:40:14,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-22 15:40:14,292 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-10-22 15:40:14,292 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-10-22 15:40:14,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 15:40:14,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 15:40:14,766 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 15:40:14,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:40:14 BoogieIcfgContainer [2018-10-22 15:40:14,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 15:40:14,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 15:40:14,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 15:40:14,773 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 15:40:14,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 03:40:13" (1/3) ... [2018-10-22 15:40:14,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e249fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:40:14, skipping insertion in model container [2018-10-22 15:40:14,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:14" (2/3) ... [2018-10-22 15:40:14,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e249fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:40:14, skipping insertion in model container [2018-10-22 15:40:14,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:40:14" (3/3) ... [2018-10-22 15:40:14,778 INFO L112 eAbstractionObserver]: Analyzing ICFG trex04_true-unreach-call_false-termination.i [2018-10-22 15:40:14,790 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 15:40:14,799 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 15:40:14,819 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 15:40:14,855 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 15:40:14,856 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 15:40:14,856 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 15:40:14,857 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 15:40:14,857 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 15:40:14,859 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 15:40:14,860 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 15:40:14,860 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 15:40:14,860 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 15:40:14,883 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-10-22 15:40:14,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-22 15:40:14,890 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:40:14,891 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:40:14,894 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:40:14,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:40:14,900 INFO L82 PathProgramCache]: Analyzing trace with hash -2130484720, now seen corresponding path program 1 times [2018-10-22 15:40:14,903 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:40:14,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:40:14,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:14,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:14,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:40:15,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:40:15,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 15:40:15,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 15:40:15,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 15:40:15,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:40:15,098 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-10-22 15:40:15,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:40:15,131 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2018-10-22 15:40:15,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 15:40:15,133 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-10-22 15:40:15,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:40:15,151 INFO L225 Difference]: With dead ends: 33 [2018-10-22 15:40:15,151 INFO L226 Difference]: Without dead ends: 21 [2018-10-22 15:40:15,156 INFO L605 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 [2018-10-22 15:40:15,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-22 15:40:15,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-22 15:40:15,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-22 15:40:15,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2018-10-22 15:40:15,211 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 28 transitions. Word has length 12 [2018-10-22 15:40:15,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:40:15,211 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 28 transitions. [2018-10-22 15:40:15,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 15:40:15,212 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2018-10-22 15:40:15,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-22 15:40:15,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:40:15,215 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:40:15,215 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:40:15,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:40:15,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1628086673, now seen corresponding path program 1 times [2018-10-22 15:40:15,216 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:40:15,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:40:15,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:15,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:15,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:40:15,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:40:15,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-22 15:40:15,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-22 15:40:15,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-22 15:40:15,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-22 15:40:15,462 INFO L87 Difference]: Start difference. First operand 21 states and 28 transitions. Second operand 4 states. [2018-10-22 15:40:15,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:40:15,597 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2018-10-22 15:40:15,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-22 15:40:15,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-10-22 15:40:15,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:40:15,598 INFO L225 Difference]: With dead ends: 21 [2018-10-22 15:40:15,598 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 15:40:15,600 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-22 15:40:15,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 15:40:15,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 15:40:15,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 15:40:15,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 15:40:15,601 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-10-22 15:40:15,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:40:15,601 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 15:40:15,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-22 15:40:15,602 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 15:40:15,602 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 15:40:15,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 15:40:15,658 INFO L425 ceAbstractionStarter]: For program point fooEXIT(lines 11 18) no Hoare annotation was computed. [2018-10-22 15:40:15,658 INFO L428 ceAbstractionStarter]: At program point fooENTRY(lines 11 18) the Hoare annotation is: true [2018-10-22 15:40:15,658 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-10-22 15:40:15,659 INFO L425 ceAbstractionStarter]: For program point L16-1(lines 11 18) no Hoare annotation was computed. [2018-10-22 15:40:15,659 INFO L425 ceAbstractionStarter]: For program point L15-2(lines 12 18) no Hoare annotation was computed. [2018-10-22 15:40:15,659 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-10-22 15:40:15,659 INFO L428 ceAbstractionStarter]: At program point L19(lines 19 35) the Hoare annotation is: true [2018-10-22 15:40:15,659 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-22 15:40:15,659 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-22 15:40:15,659 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 15:40:15,660 INFO L425 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-10-22 15:40:15,660 INFO L428 ceAbstractionStarter]: At program point L28-1(line 28) the Hoare annotation is: true [2018-10-22 15:40:15,660 INFO L425 ceAbstractionStarter]: For program point L28-3(lines 20 35) no Hoare annotation was computed. [2018-10-22 15:40:15,660 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 15:40:15,660 INFO L428 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2018-10-22 15:40:15,660 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 15:40:15,661 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-10-22 15:40:15,661 INFO L425 ceAbstractionStarter]: For program point L25-2(lines 20 35) no Hoare annotation was computed. [2018-10-22 15:40:15,661 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 15:40:15,661 INFO L425 ceAbstractionStarter]: For program point L30(lines 30 33) no Hoare annotation was computed. [2018-10-22 15:40:15,661 INFO L425 ceAbstractionStarter]: For program point L30-2(lines 20 35) no Hoare annotation was computed. [2018-10-22 15:40:15,661 INFO L425 ceAbstractionStarter]: For program point L30-3(lines 30 33) no Hoare annotation was computed. [2018-10-22 15:40:15,662 INFO L428 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: true [2018-10-22 15:40:15,662 INFO L425 ceAbstractionStarter]: For program point L26-2(line 26) no Hoare annotation was computed. [2018-10-22 15:40:15,662 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 15:40:15,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 03:40:15 BoogieIcfgContainer [2018-10-22 15:40:15,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 15:40:15,672 INFO L168 Benchmark]: Toolchain (without parser) took 1924.93 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 728.8 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -735.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:40:15,674 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:40:15,675 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-22 15:40:15,676 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.05 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:40:15,677 INFO L168 Benchmark]: Boogie Preprocessor took 23.88 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:40:15,678 INFO L168 Benchmark]: RCFGBuilder took 630.40 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 728.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -776.9 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-10-22 15:40:15,679 INFO L168 Benchmark]: TraceAbstraction took 902.04 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. [2018-10-22 15:40:15,684 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 318.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.05 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.88 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 630.40 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 728.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -776.9 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 902.04 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 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: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 58 SDtfs, 1 SDslu, 46 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 6 PreInvPairs, 8 NumberOfFragments, 5 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 313 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...