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_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/HOLA/28.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:02:03,332 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:02:03,334 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:02:03,348 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:02:03,349 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:02:03,350 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:02:03,351 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:02:03,354 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:02:03,356 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:02:03,358 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:02:03,358 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:02:03,359 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:02:03,359 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:02:03,360 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:02:03,364 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:02:03,365 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:02:03,366 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:02:03,376 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:02:03,378 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:02:03,379 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:02:03,379 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:02:03,384 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:02:03,384 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:02:03,384 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:02:03,385 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:02:03,386 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:02:03,386 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:02:03,389 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:02:03,390 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:02:03,390 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:02:03,390 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:02:03,391 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:02:03,391 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:02:03,397 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:02:03,397 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:02:03,398 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:02:03,420 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:02:03,420 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:02:03,420 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:02:03,421 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:02:03,422 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:02:03,422 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:02:03,422 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:02:03,422 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:02:03,422 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:02:03,422 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:02:03,423 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:02:03,423 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:02:03,423 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:02:03,423 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:02:03,423 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:02:03,423 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:02:03,424 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:02:03,425 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:02:03,425 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:02:03,472 INFO ]: Repository-Root is: /tmp [2018-06-22 01:02:03,489 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:02:03,494 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:02:03,496 INFO ]: Initializing SmtParser... [2018-06-22 01:02:03,496 INFO ]: SmtParser initialized [2018-06-22 01:02:03,497 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/28.c.smt2 [2018-06-22 01:02:03,498 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 01:02:03,586 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/28.c.smt2 unknown [2018-06-22 01:02:03,904 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/28.c.smt2 [2018-06-22 01:02:03,909 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:02:03,922 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:02:03,923 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:02:03,923 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:02:03,923 INFO ]: ChcToBoogie initialized [2018-06-22 01:02:03,931 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:02:03" (1/1) ... [2018-06-22 01:02:04,039 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:04 Unit [2018-06-22 01:02:04,039 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:02:04,043 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:02:04,043 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:02:04,043 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:02:04,066 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:04" (1/1) ... [2018-06-22 01:02:04,066 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:04" (1/1) ... [2018-06-22 01:02:04,073 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:04" (1/1) ... [2018-06-22 01:02:04,074 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:04" (1/1) ... [2018-06-22 01:02:04,079 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:04" (1/1) ... [2018-06-22 01:02:04,081 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:04" (1/1) ... [2018-06-22 01:02:04,082 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:04" (1/1) ... [2018-06-22 01:02:04,085 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:02:04,086 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:02:04,086 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:02:04,086 INFO ]: RCFGBuilder initialized [2018-06-22 01:02:04,087 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:04" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:02:04,100 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:02:04,100 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:02:04,100 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:02:04,100 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:02:04,100 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:02:04,100 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 01:02:04,685 INFO ]: Using library mode [2018-06-22 01:02:04,686 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:02:04 BoogieIcfgContainer [2018-06-22 01:02:04,686 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:02:04,691 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:02:04,691 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:02:04,694 INFO ]: TraceAbstraction initialized [2018-06-22 01:02:04,695 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:02:03" (1/3) ... [2018-06-22 01:02:04,695 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c865cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:02:04, skipping insertion in model container [2018-06-22 01:02:04,696 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:02:04" (2/3) ... [2018-06-22 01:02:04,696 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c865cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:02:04, skipping insertion in model container [2018-06-22 01:02:04,696 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:02:04" (3/3) ... [2018-06-22 01:02:04,698 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:02:04,708 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:02:04,717 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:02:04,770 INFO ]: Using default assertion order modulation [2018-06-22 01:02:04,770 INFO ]: Interprodecural is true [2018-06-22 01:02:04,770 INFO ]: Hoare is false [2018-06-22 01:02:04,770 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:02:04,770 INFO ]: Backedges is TWOTRACK [2018-06-22 01:02:04,770 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:02:04,770 INFO ]: Difference is false [2018-06-22 01:02:04,770 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:02:04,770 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:02:04,785 INFO ]: Start isEmpty. Operand 36 states. [2018-06-22 01:02:04,796 INFO ]: Finished isEmpty. Found accepting run of length 27 [2018-06-22 01:02:04,796 INFO ]: Found error trace [2018-06-22 01:02:04,797 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:02:04,797 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:02:04,803 INFO ]: Analyzing trace with hash 1720270002, now seen corresponding path program 1 times [2018-06-22 01:02:04,805 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:02:04,806 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:02:04,845 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:04,845 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:02:04,845 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:04,950 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:05,935 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:05,937 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:02:05,937 INFO ]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2018-06-22 01:02:05,940 INFO ]: Interpolant automaton has 20 states [2018-06-22 01:02:05,955 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 01:02:05,955 INFO ]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-06-22 01:02:05,958 INFO ]: Start difference. First operand 36 states. Second operand 20 states. [2018-06-22 01:02:06,238 WARN ]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-06-22 01:02:07,313 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:02:07,313 INFO ]: Finished difference Result 71 states and 80 transitions. [2018-06-22 01:02:07,313 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-06-22 01:02:07,314 INFO ]: Start accepts. Automaton has 20 states. Word has length 26 [2018-06-22 01:02:07,315 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:02:07,326 INFO ]: With dead ends: 71 [2018-06-22 01:02:07,326 INFO ]: Without dead ends: 68 [2018-06-22 01:02:07,328 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=493, Invalid=1147, Unknown=0, NotChecked=0, Total=1640 [2018-06-22 01:02:07,346 INFO ]: Start minimizeSevpa. Operand 68 states. [2018-06-22 01:02:07,366 INFO ]: Finished minimizeSevpa. Reduced states from 68 to 45. [2018-06-22 01:02:07,367 INFO ]: Start removeUnreachable. Operand 45 states. [2018-06-22 01:02:07,368 INFO ]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-06-22 01:02:07,370 INFO ]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 26 [2018-06-22 01:02:07,370 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:02:07,370 INFO ]: Abstraction has 45 states and 50 transitions. [2018-06-22 01:02:07,370 INFO ]: Interpolant automaton has 20 states. [2018-06-22 01:02:07,370 INFO ]: Start isEmpty. Operand 45 states and 50 transitions. [2018-06-22 01:02:07,371 INFO ]: Finished isEmpty. Found accepting run of length 31 [2018-06-22 01:02:07,371 INFO ]: Found error trace [2018-06-22 01:02:07,371 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:02:07,371 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:02:07,371 INFO ]: Analyzing trace with hash 363097082, now seen corresponding path program 1 times [2018-06-22 01:02:07,371 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:02:07,371 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:02:07,372 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:07,372 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:02:07,372 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:07,403 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:07,955 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:07,955 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:02:07,955 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:02:07,963 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:02:08,040 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:08,052 INFO ]: Computing forward predicates... [2018-06-22 01:02:09,127 INFO ]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:02:09,155 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 01:02:09,155 INFO ]: Number of different interpolants: perfect sequences [22] imperfect sequences [24] total 40 [2018-06-22 01:02:09,156 INFO ]: Interpolant automaton has 40 states [2018-06-22 01:02:09,156 INFO ]: Constructing interpolant automaton starting with 40 interpolants. [2018-06-22 01:02:09,157 INFO ]: CoverageRelationStatistics Valid=79, Invalid=1481, Unknown=0, NotChecked=0, Total=1560 [2018-06-22 01:02:09,157 INFO ]: Start difference. First operand 45 states and 50 transitions. Second operand 40 states. [2018-06-22 01:02:12,638 WARN ]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-06-22 01:02:13,609 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:02:13,609 INFO ]: Finished difference Result 202 states and 231 transitions. [2018-06-22 01:02:13,612 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-06-22 01:02:13,612 INFO ]: Start accepts. Automaton has 40 states. Word has length 30 [2018-06-22 01:02:13,612 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:02:13,615 INFO ]: With dead ends: 202 [2018-06-22 01:02:13,615 INFO ]: Without dead ends: 199 [2018-06-22 01:02:13,620 INFO ]: 0 DeclaredPredicates, 92 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1457, Invalid=4705, Unknown=0, NotChecked=0, Total=6162 [2018-06-22 01:02:13,620 INFO ]: Start minimizeSevpa. Operand 199 states. [2018-06-22 01:02:13,636 INFO ]: Finished minimizeSevpa. Reduced states from 199 to 53. [2018-06-22 01:02:13,636 INFO ]: Start removeUnreachable. Operand 53 states. [2018-06-22 01:02:13,637 INFO ]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2018-06-22 01:02:13,637 INFO ]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 30 [2018-06-22 01:02:13,637 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:02:13,638 INFO ]: Abstraction has 53 states and 60 transitions. [2018-06-22 01:02:13,638 INFO ]: Interpolant automaton has 40 states. [2018-06-22 01:02:13,638 INFO ]: Start isEmpty. Operand 53 states and 60 transitions. [2018-06-22 01:02:13,640 INFO ]: Finished isEmpty. Found accepting run of length 31 [2018-06-22 01:02:13,640 INFO ]: Found error trace [2018-06-22 01:02:13,640 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:02:13,640 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:02:13,641 INFO ]: Analyzing trace with hash -2143495110, now seen corresponding path program 1 times [2018-06-22 01:02:13,641 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:02:13,641 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:02:13,641 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:13,642 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:02:13,642 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:13,682 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:13,984 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:13,984 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:02:13,984 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:02:13,998 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:02:14,068 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:14,072 INFO ]: Computing forward predicates... [2018-06-22 01:02:14,182 INFO ]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:14,202 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 01:02:14,202 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [24] total 28 [2018-06-22 01:02:14,202 INFO ]: Interpolant automaton has 28 states [2018-06-22 01:02:14,202 INFO ]: Constructing interpolant automaton starting with 28 interpolants. [2018-06-22 01:02:14,202 INFO ]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2018-06-22 01:02:14,203 INFO ]: Start difference. First operand 53 states and 60 transitions. Second operand 28 states. [2018-06-22 01:02:15,246 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:02:15,246 INFO ]: Finished difference Result 146 states and 162 transitions. [2018-06-22 01:02:15,247 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-06-22 01:02:15,247 INFO ]: Start accepts. Automaton has 28 states. Word has length 30 [2018-06-22 01:02:15,247 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:02:15,248 INFO ]: With dead ends: 146 [2018-06-22 01:02:15,248 INFO ]: Without dead ends: 143 [2018-06-22 01:02:15,249 INFO ]: 0 DeclaredPredicates, 79 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=578, Invalid=2284, Unknown=0, NotChecked=0, Total=2862 [2018-06-22 01:02:15,250 INFO ]: Start minimizeSevpa. Operand 143 states. [2018-06-22 01:02:15,256 INFO ]: Finished minimizeSevpa. Reduced states from 143 to 52. [2018-06-22 01:02:15,256 INFO ]: Start removeUnreachable. Operand 52 states. [2018-06-22 01:02:15,257 INFO ]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-06-22 01:02:15,257 INFO ]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-06-22 01:02:15,257 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:02:15,257 INFO ]: Abstraction has 52 states and 57 transitions. [2018-06-22 01:02:15,257 INFO ]: Interpolant automaton has 28 states. [2018-06-22 01:02:15,257 INFO ]: Start isEmpty. Operand 52 states and 57 transitions. [2018-06-22 01:02:15,258 INFO ]: Finished isEmpty. Found accepting run of length 31 [2018-06-22 01:02:15,258 INFO ]: Found error trace [2018-06-22 01:02:15,258 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:02:15,258 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:02:15,259 INFO ]: Analyzing trace with hash -142746309, now seen corresponding path program 1 times [2018-06-22 01:02:15,259 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:02:15,259 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:02:15,259 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:15,259 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:02:15,259 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:15,275 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:15,591 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:15,591 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:02:15,591 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:02:15,606 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:02:15,664 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:15,668 INFO ]: Computing forward predicates... [2018-06-22 01:02:16,207 INFO ]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:02:16,238 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 01:02:16,238 INFO ]: Number of different interpolants: perfect sequences [22] imperfect sequences [20] total 40 [2018-06-22 01:02:16,239 INFO ]: Interpolant automaton has 40 states [2018-06-22 01:02:16,239 INFO ]: Constructing interpolant automaton starting with 40 interpolants. [2018-06-22 01:02:16,239 INFO ]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-06-22 01:02:16,239 INFO ]: Start difference. First operand 52 states and 57 transitions. Second operand 40 states. [2018-06-22 01:02:18,822 WARN ]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-06-22 01:02:19,982 WARN ]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-06-22 01:02:20,559 WARN ]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-06-22 01:02:21,248 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:02:21,248 INFO ]: Finished difference Result 142 states and 157 transitions. [2018-06-22 01:02:21,277 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-06-22 01:02:21,277 INFO ]: Start accepts. Automaton has 40 states. Word has length 30 [2018-06-22 01:02:21,278 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:02:21,279 INFO ]: With dead ends: 142 [2018-06-22 01:02:21,279 INFO ]: Without dead ends: 139 [2018-06-22 01:02:21,281 INFO ]: 0 DeclaredPredicates, 106 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1806, Invalid=6750, Unknown=0, NotChecked=0, Total=8556 [2018-06-22 01:02:21,281 INFO ]: Start minimizeSevpa. Operand 139 states. [2018-06-22 01:02:21,286 INFO ]: Finished minimizeSevpa. Reduced states from 139 to 37. [2018-06-22 01:02:21,286 INFO ]: Start removeUnreachable. Operand 37 states. [2018-06-22 01:02:21,287 INFO ]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-06-22 01:02:21,287 INFO ]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 30 [2018-06-22 01:02:21,287 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:02:21,287 INFO ]: Abstraction has 37 states and 40 transitions. [2018-06-22 01:02:21,287 INFO ]: Interpolant automaton has 40 states. [2018-06-22 01:02:21,287 INFO ]: Start isEmpty. Operand 37 states and 40 transitions. [2018-06-22 01:02:21,288 INFO ]: Finished isEmpty. Found accepting run of length 33 [2018-06-22 01:02:21,288 INFO ]: Found error trace [2018-06-22 01:02:21,288 INFO ]: trace histogram [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, 1, 1, 1, 1] [2018-06-22 01:02:21,288 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:02:21,288 INFO ]: Analyzing trace with hash -1564160728, now seen corresponding path program 1 times [2018-06-22 01:02:21,288 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:02:21,288 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:02:21,289 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:21,289 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:02:21,289 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:21,301 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:21,421 INFO ]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:21,421 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:02:21,421 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-22 01:02:21,421 INFO ]: Interpolant automaton has 8 states [2018-06-22 01:02:21,421 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 01:02:21,421 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 01:02:21,422 INFO ]: Start difference. First operand 37 states and 40 transitions. Second operand 8 states. [2018-06-22 01:02:21,515 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:02:21,515 INFO ]: Finished difference Result 50 states and 54 transitions. [2018-06-22 01:02:21,515 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 01:02:21,515 INFO ]: Start accepts. Automaton has 8 states. Word has length 32 [2018-06-22 01:02:21,515 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:02:21,516 INFO ]: With dead ends: 50 [2018-06-22 01:02:21,516 INFO ]: Without dead ends: 49 [2018-06-22 01:02:21,516 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2018-06-22 01:02:21,516 INFO ]: Start minimizeSevpa. Operand 49 states. [2018-06-22 01:02:21,518 INFO ]: Finished minimizeSevpa. Reduced states from 49 to 38. [2018-06-22 01:02:21,518 INFO ]: Start removeUnreachable. Operand 38 states. [2018-06-22 01:02:21,519 INFO ]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-06-22 01:02:21,519 INFO ]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 32 [2018-06-22 01:02:21,519 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:02:21,519 INFO ]: Abstraction has 38 states and 41 transitions. [2018-06-22 01:02:21,519 INFO ]: Interpolant automaton has 8 states. [2018-06-22 01:02:21,519 INFO ]: Start isEmpty. Operand 38 states and 41 transitions. [2018-06-22 01:02:21,520 INFO ]: Finished isEmpty. Found accepting run of length 33 [2018-06-22 01:02:21,520 INFO ]: Found error trace [2018-06-22 01:02:21,520 INFO ]: trace histogram [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, 1, 1, 1, 1] [2018-06-22 01:02:21,520 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:02:21,520 INFO ]: Analyzing trace with hash -1892801304, now seen corresponding path program 1 times [2018-06-22 01:02:21,520 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:02:21,520 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:02:21,521 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:21,521 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:02:21,521 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:02:21,535 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:02:21,645 INFO ]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:02:21,646 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:02:21,646 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-22 01:02:21,646 INFO ]: Interpolant automaton has 8 states [2018-06-22 01:02:21,646 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 01:02:21,646 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 01:02:21,646 INFO ]: Start difference. First operand 38 states and 41 transitions. Second operand 8 states. [2018-06-22 01:02:22,178 WARN ]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 01:02:22,197 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:02:22,197 INFO ]: Finished difference Result 24 states and 25 transitions. [2018-06-22 01:02:22,197 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 01:02:22,197 INFO ]: Start accepts. Automaton has 8 states. Word has length 32 [2018-06-22 01:02:22,197 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:02:22,197 INFO ]: With dead ends: 24 [2018-06-22 01:02:22,197 INFO ]: Without dead ends: 0 [2018-06-22 01:02:22,198 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2018-06-22 01:02:22,198 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:02:22,198 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:02:22,198 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:02:22,198 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:02:22,198 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2018-06-22 01:02:22,198 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:02:22,198 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:02:22,198 INFO ]: Interpolant automaton has 8 states. [2018-06-22 01:02:22,198 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:02:22,198 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:02:22,202 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:02:22 BoogieIcfgContainer [2018-06-22 01:02:22,202 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:02:22,203 INFO ]: Toolchain (without parser) took 18293.63 ms. Allocated memory was 306.2 MB in the beginning and 528.5 MB in the end (delta: 222.3 MB). Free memory was 250.5 MB in the beginning and 325.1 MB in the end (delta: -74.6 MB). Peak memory consumption was 147.7 MB. Max. memory is 3.6 GB. [2018-06-22 01:02:22,204 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 306.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:02:22,204 INFO ]: ChcToBoogie took 116.77 ms. Allocated memory is still 306.2 MB. Free memory was 249.5 MB in the beginning and 247.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:02:22,204 INFO ]: Boogie Preprocessor took 42.44 ms. Allocated memory is still 306.2 MB. Free memory was 247.5 MB in the beginning and 245.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:02:22,205 INFO ]: RCFGBuilder took 600.36 ms. Allocated memory is still 306.2 MB. Free memory was 245.5 MB in the beginning and 218.5 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 3.6 GB. [2018-06-22 01:02:22,205 INFO ]: TraceAbstraction took 17511.02 ms. Allocated memory was 306.2 MB in the beginning and 528.5 MB in the end (delta: 222.3 MB). Free memory was 218.5 MB in the beginning and 325.1 MB in the end (delta: -106.6 MB). Peak memory consumption was 115.7 MB. Max. memory is 3.6 GB. [2018-06-22 01:02:22,208 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 306.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 116.77 ms. Allocated memory is still 306.2 MB. Free memory was 249.5 MB in the beginning and 247.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 42.44 ms. Allocated memory is still 306.2 MB. Free memory was 247.5 MB in the beginning and 245.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 600.36 ms. Allocated memory is still 306.2 MB. Free memory was 245.5 MB in the beginning and 218.5 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 17511.02 ms. Allocated memory was 306.2 MB in the beginning and 528.5 MB in the end (delta: 222.3 MB). Free memory was 218.5 MB in the beginning and 325.1 MB in the end (delta: -106.6 MB). Peak memory consumption was 115.7 MB. 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 2 procedures, 36 locations, 1 error locations. SAFE Result, 17.4s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 12.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 230 SDtfs, 3255 SDslu, 5909 SDs, 0 SdLazy, 3295 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 348 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1308 ImplicationChecksByTransitivity, 13.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=2, 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, 6 MinimizatonAttempts, 373 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 270 NumberOfCodeBlocks, 270 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 261 ConstructedInterpolants, 0 QuantifiedInterpolants, 20852 SizeOfPredicates, 104 NumberOfNonLiveVariables, 1305 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 14/20 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/28.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-02-22-220.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/28.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-02-22-220.csv Received shutdown request...