java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/llreve-bench/smt2/loop__bug15.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:58:26,186 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:58:26,188 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:58:26,199 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:58:26,199 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:58:26,200 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:58:26,201 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:58:26,203 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:58:26,205 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:58:26,205 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:58:26,206 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:58:26,206 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:58:26,210 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:58:26,211 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:58:26,212 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:58:26,212 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:58:26,216 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:58:26,218 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:58:26,231 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:58:26,232 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:58:26,233 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:58:26,235 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:58:26,235 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:58:26,235 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:58:26,236 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:58:26,237 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:58:26,242 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:58:26,243 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:58:26,244 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:58:26,244 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:58:26,245 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:58:26,246 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:58:26,246 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:58:26,247 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:58:26,254 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:58:26,254 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 11:58:26,274 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:58:26,274 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:58:26,275 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:58:26,275 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:58:26,276 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:58:26,277 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:58:26,277 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:58:26,277 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:58:26,277 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:58:26,277 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:58:26,278 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:58:26,278 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:58:26,278 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:58:26,278 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:58:26,278 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:58:26,279 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:58:26,281 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:58:26,282 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:58:26,282 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:58:26,283 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:58:26,283 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:58:26,334 INFO ]: Repository-Root is: /tmp [2018-06-22 11:58:26,348 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:58:26,354 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:58:26,356 INFO ]: Initializing SmtParser... [2018-06-22 11:58:26,356 INFO ]: SmtParser initialized [2018-06-22 11:58:26,357 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/llreve-bench/smt2/loop__bug15.smt2 [2018-06-22 11:58:26,358 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 11:58:26,446 INFO ]: Executing SMT file /storage/chc-comp/llreve-bench/smt2/loop__bug15.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@72a9ffb [2018-06-22 11:58:26,593 INFO ]: Succesfully executed SMT file /storage/chc-comp/llreve-bench/smt2/loop__bug15.smt2 [2018-06-22 11:58:26,606 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:58:26,612 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:58:26,612 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:58:26,612 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:58:26,612 INFO ]: ChcToBoogie initialized [2018-06-22 11:58:26,616 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:58:26" (1/1) ... [2018-06-22 11:58:26,660 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:58:26 Unit [2018-06-22 11:58:26,660 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:58:26,662 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:58:26,662 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:58:26,662 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:58:26,683 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:58:26" (1/1) ... [2018-06-22 11:58:26,683 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:58:26" (1/1) ... [2018-06-22 11:58:26,693 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:58:26" (1/1) ... [2018-06-22 11:58:26,693 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:58:26" (1/1) ... [2018-06-22 11:58:26,697 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:58:26" (1/1) ... [2018-06-22 11:58:26,698 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:58:26" (1/1) ... [2018-06-22 11:58:26,699 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:58:26" (1/1) ... [2018-06-22 11:58:26,701 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:58:26,702 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:58:26,702 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:58:26,702 INFO ]: RCFGBuilder initialized [2018-06-22 11:58:26,703 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:58:26" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 11:58:26,720 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:58:26,720 INFO ]: Found specification of procedure False [2018-06-22 11:58:26,720 INFO ]: Found implementation of procedure False [2018-06-22 11:58:26,720 INFO ]: Specification and implementation of procedure INV_MAIN_42 given in one single declaration [2018-06-22 11:58:26,720 INFO ]: Found specification of procedure INV_MAIN_42 [2018-06-22 11:58:26,720 INFO ]: Found implementation of procedure INV_MAIN_42 [2018-06-22 11:58:26,720 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:58:26,720 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:58:26,721 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:58:26,979 INFO ]: Using library mode [2018-06-22 11:58:26,980 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:58:26 BoogieIcfgContainer [2018-06-22 11:58:26,980 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:58:26,981 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:58:26,981 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:58:26,984 INFO ]: TraceAbstraction initialized [2018-06-22 11:58:26,984 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:58:26" (1/3) ... [2018-06-22 11:58:26,987 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4e560c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:58:26, skipping insertion in model container [2018-06-22 11:58:26,987 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:58:26" (2/3) ... [2018-06-22 11:58:26,987 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4e560c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:58:26, skipping insertion in model container [2018-06-22 11:58:26,987 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:58:26" (3/3) ... [2018-06-22 11:58:26,989 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:58:26,998 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:58:27,006 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:58:27,042 INFO ]: Using default assertion order modulation [2018-06-22 11:58:27,042 INFO ]: Interprodecural is true [2018-06-22 11:58:27,042 INFO ]: Hoare is false [2018-06-22 11:58:27,042 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:58:27,042 INFO ]: Backedges is TWOTRACK [2018-06-22 11:58:27,042 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:58:27,042 INFO ]: Difference is false [2018-06-22 11:58:27,042 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:58:27,042 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:58:27,056 INFO ]: Start isEmpty. Operand 15 states. [2018-06-22 11:58:27,069 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:58:27,069 INFO ]: Found error trace [2018-06-22 11:58:27,070 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:58:27,070 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:58:27,076 INFO ]: Analyzing trace with hash 64248865, now seen corresponding path program 1 times [2018-06-22 11:58:27,077 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:58:27,078 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:58:27,114 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:58:27,114 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:58:27,114 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:58:27,128 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:58:27,150 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:58:27,152 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:58:27,152 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:58:27,153 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:58:27,165 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:58:27,166 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:58:27,168 INFO ]: Start difference. First operand 15 states. Second operand 2 states. [2018-06-22 11:58:27,197 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:58:27,197 INFO ]: Finished difference Result 13 states and 18 transitions. [2018-06-22 11:58:27,197 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:58:27,198 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:58:27,199 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:58:27,210 INFO ]: With dead ends: 13 [2018-06-22 11:58:27,210 INFO ]: Without dead ends: 13 [2018-06-22 11:58:27,211 INFO ]: 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 [2018-06-22 11:58:27,226 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 11:58:27,252 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 11:58:27,253 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 11:58:27,254 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2018-06-22 11:58:27,256 INFO ]: Start accepts. Automaton has 13 states and 18 transitions. Word has length 5 [2018-06-22 11:58:27,256 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:58:27,256 INFO ]: Abstraction has 13 states and 18 transitions. [2018-06-22 11:58:27,256 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:58:27,256 INFO ]: Start isEmpty. Operand 13 states and 18 transitions. [2018-06-22 11:58:27,257 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:58:27,257 INFO ]: Found error trace [2018-06-22 11:58:27,257 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:58:27,258 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:58:27,259 INFO ]: Analyzing trace with hash -782684870, now seen corresponding path program 1 times [2018-06-22 11:58:27,259 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:58:27,259 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:58:27,259 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:58:27,259 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:58:27,260 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:58:27,277 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:58:27,347 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:58:27,347 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:58:27,347 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:58:27,349 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:58:27,349 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:58:27,349 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:58:27,349 INFO ]: Start difference. First operand 13 states and 18 transitions. Second operand 4 states. [2018-06-22 11:58:27,516 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:58:27,516 INFO ]: Finished difference Result 15 states and 22 transitions. [2018-06-22 11:58:27,516 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:58:27,517 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:58:27,517 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:58:27,517 INFO ]: With dead ends: 15 [2018-06-22 11:58:27,517 INFO ]: Without dead ends: 15 [2018-06-22 11:58:27,518 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:58:27,518 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 11:58:27,523 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 11:58:27,524 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 11:58:27,524 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2018-06-22 11:58:27,524 INFO ]: Start accepts. Automaton has 15 states and 22 transitions. Word has length 9 [2018-06-22 11:58:27,525 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:58:27,525 INFO ]: Abstraction has 15 states and 22 transitions. [2018-06-22 11:58:27,525 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:58:27,526 INFO ]: Start isEmpty. Operand 15 states and 22 transitions. [2018-06-22 11:58:27,526 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:58:27,526 INFO ]: Found error trace [2018-06-22 11:58:27,526 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:58:27,527 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:58:27,527 INFO ]: Analyzing trace with hash -1140628060, now seen corresponding path program 1 times [2018-06-22 11:58:27,527 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:58:27,527 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:58:27,528 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:58:27,528 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:58:27,528 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:58:27,535 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:58:27,592 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:58:27,592 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:58:27,592 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:58:27,592 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:58:27,592 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:58:27,592 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:58:27,593 INFO ]: Start difference. First operand 15 states and 22 transitions. Second operand 4 states. [2018-06-22 11:58:27,828 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:58:27,828 INFO ]: Finished difference Result 24 states and 43 transitions. [2018-06-22 11:58:27,829 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:58:27,829 INFO ]: Start accepts. Automaton has 4 states. Word has length 13 [2018-06-22 11:58:27,829 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:58:27,830 INFO ]: With dead ends: 24 [2018-06-22 11:58:27,830 INFO ]: Without dead ends: 24 [2018-06-22 11:58:27,831 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:58:27,831 INFO ]: Start minimizeSevpa. Operand 24 states. [2018-06-22 11:58:27,845 INFO ]: Finished minimizeSevpa. Reduced states from 24 to 22. [2018-06-22 11:58:27,846 INFO ]: Start removeUnreachable. Operand 22 states. [2018-06-22 11:58:27,849 INFO ]: Finished removeUnreachable. Reduced from 22 states to 22 states and 38 transitions. [2018-06-22 11:58:27,850 INFO ]: Start accepts. Automaton has 22 states and 38 transitions. Word has length 13 [2018-06-22 11:58:27,850 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:58:27,850 INFO ]: Abstraction has 22 states and 38 transitions. [2018-06-22 11:58:27,850 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:58:27,850 INFO ]: Start isEmpty. Operand 22 states and 38 transitions. [2018-06-22 11:58:27,851 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:58:27,851 INFO ]: Found error trace [2018-06-22 11:58:27,851 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:58:27,851 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:58:27,851 INFO ]: Analyzing trace with hash -1385878913, now seen corresponding path program 1 times [2018-06-22 11:58:27,851 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:58:27,851 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:58:27,853 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:58:27,853 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:58:27,853 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:58:27,868 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:58:28,012 INFO ]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:58:28,012 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:58:28,012 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 11:58:28,012 INFO ]: Interpolant automaton has 5 states [2018-06-22 11:58:28,012 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 11:58:28,012 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:58:28,013 INFO ]: Start difference. First operand 22 states and 38 transitions. Second operand 5 states. [2018-06-22 11:58:28,150 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:58:28,150 INFO ]: Finished difference Result 32 states and 58 transitions. [2018-06-22 11:58:28,150 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:58:28,150 INFO ]: Start accepts. Automaton has 5 states. Word has length 13 [2018-06-22 11:58:28,150 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:58:28,152 INFO ]: With dead ends: 32 [2018-06-22 11:58:28,152 INFO ]: Without dead ends: 32 [2018-06-22 11:58:28,152 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:58:28,152 INFO ]: Start minimizeSevpa. Operand 32 states. [2018-06-22 11:58:28,162 INFO ]: Finished minimizeSevpa. Reduced states from 32 to 26. [2018-06-22 11:58:28,162 INFO ]: Start removeUnreachable. Operand 26 states. [2018-06-22 11:58:28,164 INFO ]: Finished removeUnreachable. Reduced from 26 states to 26 states and 48 transitions. [2018-06-22 11:58:28,164 INFO ]: Start accepts. Automaton has 26 states and 48 transitions. Word has length 13 [2018-06-22 11:58:28,164 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:58:28,164 INFO ]: Abstraction has 26 states and 48 transitions. [2018-06-22 11:58:28,164 INFO ]: Interpolant automaton has 5 states. [2018-06-22 11:58:28,164 INFO ]: Start isEmpty. Operand 26 states and 48 transitions. [2018-06-22 11:58:28,165 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:58:28,165 INFO ]: Found error trace [2018-06-22 11:58:28,166 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:58:28,166 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:58:28,166 INFO ]: Analyzing trace with hash -1555743903, now seen corresponding path program 1 times [2018-06-22 11:58:28,166 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:58:28,166 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:58:28,167 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:58:28,167 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:58:28,167 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:58:28,174 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:58:28,205 INFO ]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:58:28,205 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:58:28,205 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:58:28,205 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:58:28,205 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:58:28,205 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:58:28,206 INFO ]: Start difference. First operand 26 states and 48 transitions. Second operand 4 states. [2018-06-22 11:58:28,395 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:58:28,395 INFO ]: Finished difference Result 35 states and 61 transitions. [2018-06-22 11:58:28,398 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:58:28,398 INFO ]: Start accepts. Automaton has 4 states. Word has length 17 [2018-06-22 11:58:28,398 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:58:28,400 INFO ]: With dead ends: 35 [2018-06-22 11:58:28,400 INFO ]: Without dead ends: 35 [2018-06-22 11:58:28,400 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:58:28,400 INFO ]: Start minimizeSevpa. Operand 35 states. [2018-06-22 11:58:28,407 INFO ]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-06-22 11:58:28,407 INFO ]: Start removeUnreachable. Operand 31 states. [2018-06-22 11:58:28,408 INFO ]: Finished removeUnreachable. Reduced from 31 states to 31 states and 54 transitions. [2018-06-22 11:58:28,408 INFO ]: Start accepts. Automaton has 31 states and 54 transitions. Word has length 17 [2018-06-22 11:58:28,408 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:58:28,408 INFO ]: Abstraction has 31 states and 54 transitions. [2018-06-22 11:58:28,409 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:58:28,409 INFO ]: Start isEmpty. Operand 31 states and 54 transitions. [2018-06-22 11:58:28,410 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:58:28,410 INFO ]: Found error trace [2018-06-22 11:58:28,410 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:58:28,410 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:58:28,410 INFO ]: Analyzing trace with hash 414033697, now seen corresponding path program 2 times [2018-06-22 11:58:28,410 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:58:28,410 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:58:28,411 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:58:28,411 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:58:28,411 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:58:28,420 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:58:28,456 INFO ]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:58:28,456 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:58:28,456 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 11:58:28,456 INFO ]: Interpolant automaton has 6 states [2018-06-22 11:58:28,456 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 11:58:28,456 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:58:28,456 INFO ]: Start difference. First operand 31 states and 54 transitions. Second operand 6 states. [2018-06-22 11:58:28,818 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:58:28,818 INFO ]: Finished difference Result 29 states and 37 transitions. [2018-06-22 11:58:28,818 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:58:28,818 INFO ]: Start accepts. Automaton has 6 states. Word has length 17 [2018-06-22 11:58:28,818 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:58:28,819 INFO ]: With dead ends: 29 [2018-06-22 11:58:28,819 INFO ]: Without dead ends: 17 [2018-06-22 11:58:28,819 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:58:28,819 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 11:58:28,822 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 11:58:28,822 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 11:58:28,822 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-06-22 11:58:28,822 INFO ]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 17 [2018-06-22 11:58:28,822 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:58:28,822 INFO ]: Abstraction has 17 states and 19 transitions. [2018-06-22 11:58:28,822 INFO ]: Interpolant automaton has 6 states. [2018-06-22 11:58:28,822 INFO ]: Start isEmpty. Operand 17 states and 19 transitions. [2018-06-22 11:58:28,823 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:58:28,823 INFO ]: Found error trace [2018-06-22 11:58:28,823 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:58:28,823 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:58:28,823 INFO ]: Analyzing trace with hash 1222630825, now seen corresponding path program 1 times [2018-06-22 11:58:28,823 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:58:28,823 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:58:28,824 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:58:28,824 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:58:28,824 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:58:28,831 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:58:29,112 INFO ]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:58:29,113 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:58:29,113 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 11:58:29,113 INFO ]: Interpolant automaton has 6 states [2018-06-22 11:58:29,113 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 11:58:29,113 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:58:29,113 INFO ]: Start difference. First operand 17 states and 19 transitions. Second operand 6 states. [2018-06-22 11:58:29,178 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:58:29,178 INFO ]: Finished difference Result 11 states and 12 transitions. [2018-06-22 11:58:29,178 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:58:29,178 INFO ]: Start accepts. Automaton has 6 states. Word has length 17 [2018-06-22 11:58:29,178 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:58:29,178 INFO ]: With dead ends: 11 [2018-06-22 11:58:29,178 INFO ]: Without dead ends: 0 [2018-06-22 11:58:29,178 INFO ]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:58:29,178 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:58:29,178 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:58:29,178 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:58:29,178 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:58:29,178 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-06-22 11:58:29,178 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:58:29,178 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:58:29,178 INFO ]: Interpolant automaton has 6 states. [2018-06-22 11:58:29,179 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:58:29,179 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:58:29,182 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:58:29 BoogieIcfgContainer [2018-06-22 11:58:29,182 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:58:29,183 INFO ]: Toolchain (without parser) took 2576.99 ms. Allocated memory was 308.8 MB in the beginning and 325.6 MB in the end (delta: 16.8 MB). Free memory was 265.2 MB in the beginning and 279.6 MB in the end (delta: -14.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 3.6 GB. [2018-06-22 11:58:29,185 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:58:29,185 INFO ]: ChcToBoogie took 48.33 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 263.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:58:29,186 INFO ]: Boogie Preprocessor took 39.50 ms. Allocated memory is still 308.8 MB. Free memory was 263.2 MB in the beginning and 262.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:58:29,186 INFO ]: RCFGBuilder took 278.19 ms. Allocated memory is still 308.8 MB. Free memory was 262.1 MB in the beginning and 255.1 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:58:29,187 INFO ]: TraceAbstraction took 2200.82 ms. Allocated memory was 308.8 MB in the beginning and 325.6 MB in the end (delta: 16.8 MB). Free memory was 255.1 MB in the beginning and 279.6 MB in the end (delta: -24.4 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:58:29,190 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 48.33 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 263.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 39.50 ms. Allocated memory is still 308.8 MB. Free memory was 263.2 MB in the beginning and 262.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 278.19 ms. Allocated memory is still 308.8 MB. Free memory was 262.1 MB in the beginning and 255.1 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2200.82 ms. Allocated memory was 308.8 MB in the beginning and 325.6 MB in the end (delta: 16.8 MB). Free memory was 255.1 MB in the beginning and 279.6 MB in the end (delta: -24.4 MB). There was no memory consumed. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 15 locations, 1 error locations. SAFE Result, 2.1s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 118 SDtfs, 18 SDslu, 121 SDs, 0 SdLazy, 172 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=5, 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, 7 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 2484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 33/33 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__bug15.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-58-29-201.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__bug15.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-58-29-201.csv Received shutdown request...