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/vmt-chc-benchmarks/lustre/durationThm_2_e1_118.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 17:22:34,454 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 17:22:34,456 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 17:22:34,469 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 17:22:34,470 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 17:22:34,473 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 17:22:34,474 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 17:22:34,476 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 17:22:34,478 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 17:22:34,479 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 17:22:34,480 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 17:22:34,481 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 17:22:34,481 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 17:22:34,482 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 17:22:34,486 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 17:22:34,487 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 17:22:34,489 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 17:22:34,502 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 17:22:34,503 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 17:22:34,504 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 17:22:34,505 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 17:22:34,507 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 17:22:34,507 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 17:22:34,507 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 17:22:34,508 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 17:22:34,512 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 17:22:34,513 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 17:22:34,513 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 17:22:34,514 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 17:22:34,515 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 17:22:34,515 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 17:22:34,516 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 17:22:34,516 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 17:22:34,517 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 17:22:34,517 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 17:22:34,517 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 17:22:34,530 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 17:22:34,530 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 17:22:34,530 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 17:22:34,531 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 17:22:34,532 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 17:22:34,532 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 17:22:34,532 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 17:22:34,532 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 17:22:34,532 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 17:22:34,533 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 17:22:34,533 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 17:22:34,533 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 17:22:34,533 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 17:22:34,533 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 17:22:34,534 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 17:22:34,534 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 17:22:34,534 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 17:22:34,534 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 17:22:34,534 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 17:22:34,535 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 17:22:34,536 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 17:22:34,572 INFO ]: Repository-Root is: /tmp [2018-06-22 17:22:34,584 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 17:22:34,587 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 17:22:34,590 INFO ]: Initializing SmtParser... [2018-06-22 17:22:34,591 INFO ]: SmtParser initialized [2018-06-22 17:22:34,591 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_2_e1_118.smt2 [2018-06-22 17:22:34,592 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 17:22:34,676 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_2_e1_118.smt2 unknown [2018-06-22 17:22:34,876 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_2_e1_118.smt2 [2018-06-22 17:22:34,886 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 17:22:34,892 INFO ]: Walking toolchain with 4 elements. [2018-06-22 17:22:34,892 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 17:22:34,892 INFO ]: Initializing ChcToBoogie... [2018-06-22 17:22:34,892 INFO ]: ChcToBoogie initialized [2018-06-22 17:22:34,896 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:22:34" (1/1) ... [2018-06-22 17:22:34,947 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:34 Unit [2018-06-22 17:22:34,947 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 17:22:34,949 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 17:22:34,949 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 17:22:34,949 INFO ]: Boogie Preprocessor initialized [2018-06-22 17:22:34,971 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:34" (1/1) ... [2018-06-22 17:22:34,971 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:34" (1/1) ... [2018-06-22 17:22:34,980 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:34" (1/1) ... [2018-06-22 17:22:34,980 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:34" (1/1) ... [2018-06-22 17:22:34,983 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:34" (1/1) ... [2018-06-22 17:22:34,984 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:34" (1/1) ... [2018-06-22 17:22:34,986 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:34" (1/1) ... [2018-06-22 17:22:34,988 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 17:22:34,988 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 17:22:34,988 INFO ]: Initializing RCFGBuilder... [2018-06-22 17:22:34,988 INFO ]: RCFGBuilder initialized [2018-06-22 17:22:34,989 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:34" (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 17:22:35,008 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 17:22:35,008 INFO ]: Found specification of procedure False [2018-06-22 17:22:35,008 INFO ]: Found implementation of procedure False [2018-06-22 17:22:35,008 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 17:22:35,008 INFO ]: Found specification of procedure state [2018-06-22 17:22:35,008 INFO ]: Found implementation of procedure state [2018-06-22 17:22:35,008 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 17:22:35,008 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 17:22:35,008 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 17:22:35,307 INFO ]: Using library mode [2018-06-22 17:22:35,308 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:22:35 BoogieIcfgContainer [2018-06-22 17:22:35,308 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 17:22:35,309 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 17:22:35,309 INFO ]: Initializing TraceAbstraction... [2018-06-22 17:22:35,312 INFO ]: TraceAbstraction initialized [2018-06-22 17:22:35,312 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:22:34" (1/3) ... [2018-06-22 17:22:35,313 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82de829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:22:35, skipping insertion in model container [2018-06-22 17:22:35,313 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:22:34" (2/3) ... [2018-06-22 17:22:35,313 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82de829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:22:35, skipping insertion in model container [2018-06-22 17:22:35,313 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:22:35" (3/3) ... [2018-06-22 17:22:35,315 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 17:22:35,324 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 17:22:35,331 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 17:22:35,373 INFO ]: Using default assertion order modulation [2018-06-22 17:22:35,374 INFO ]: Interprodecural is true [2018-06-22 17:22:35,374 INFO ]: Hoare is false [2018-06-22 17:22:35,374 INFO ]: Compute interpolants for FPandBP [2018-06-22 17:22:35,374 INFO ]: Backedges is TWOTRACK [2018-06-22 17:22:35,374 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 17:22:35,374 INFO ]: Difference is false [2018-06-22 17:22:35,374 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 17:22:35,374 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 17:22:35,387 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 17:22:35,395 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 17:22:35,395 INFO ]: Found error trace [2018-06-22 17:22:35,396 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:22:35,396 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:22:35,401 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 17:22:35,403 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:22:35,403 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:22:35,435 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:22:35,436 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:22:35,436 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:22:35,486 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:22:35,669 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 17:22:35,671 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 17:22:35,671 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 17:22:35,672 INFO ]: Interpolant automaton has 4 states [2018-06-22 17:22:35,686 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 17:22:35,686 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 17:22:35,689 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 17:22:35,748 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:22:35,748 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 17:22:35,749 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 17:22:35,750 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 17:22:35,750 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:22:35,760 INFO ]: With dead ends: 13 [2018-06-22 17:22:35,760 INFO ]: Without dead ends: 13 [2018-06-22 17:22:35,762 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 17:22:35,774 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 17:22:35,798 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 17:22:35,799 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 17:22:35,800 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 17:22:35,801 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 17:22:35,801 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:22:35,801 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 17:22:35,801 INFO ]: Interpolant automaton has 4 states. [2018-06-22 17:22:35,801 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 17:22:35,803 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 17:22:35,803 INFO ]: Found error trace [2018-06-22 17:22:35,803 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:22:35,803 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:22:35,803 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 17:22:35,803 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:22:35,803 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:22:35,804 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:22:35,804 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:22:35,804 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:22:35,845 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:22:36,646 WARN ]: Spent 607.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2018-06-22 17:22:36,732 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 17:22:36,732 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 17:22:36,732 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) [2018-06-22 17:22:36,751 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 17:22:36,818 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:22:36,831 INFO ]: Computing forward predicates... [2018-06-22 17:22:37,000 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:22:37,039 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:22:37,057 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 17:22:38,416 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 17:22:38,445 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 17:22:38,445 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 17:22:38,445 INFO ]: Interpolant automaton has 8 states [2018-06-22 17:22:38,446 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 17:22:38,446 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 17:22:38,446 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 17:22:38,962 WARN ]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2018-06-22 17:22:39,048 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:22:39,048 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 17:22:39,050 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 17:22:39,050 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 17:22:39,050 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:22:39,050 INFO ]: With dead ends: 15 [2018-06-22 17:22:39,050 INFO ]: Without dead ends: 15 [2018-06-22 17:22:39,051 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-06-22 17:22:39,051 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 17:22:39,053 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 17:22:39,053 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 17:22:39,054 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 17:22:39,054 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 17:22:39,054 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:22:39,054 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 17:22:39,054 INFO ]: Interpolant automaton has 8 states. [2018-06-22 17:22:39,054 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 17:22:39,054 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 17:22:39,055 INFO ]: Found error trace [2018-06-22 17:22:39,055 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:22:39,055 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:22:39,055 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 17:22:39,055 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:22:39,055 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:22:39,056 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:22:39,056 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:22:39,056 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:22:39,103 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:22:39,542 WARN ]: Spent 261.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2018-06-22 17:22:40,001 WARN ]: Spent 367.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2018-06-22 17:22:40,087 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 17:22:40,087 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 17:22:40,087 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 17:22:40,098 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 17:22:40,145 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 17:22:40,145 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:22:40,148 INFO ]: Computing forward predicates... [2018-06-22 17:22:40,217 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:22:41,081 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 17:22:41,114 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 17:22:41,114 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 17:22:41,114 INFO ]: Interpolant automaton has 12 states [2018-06-22 17:22:41,114 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 17:22:41,114 INFO ]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2018-06-22 17:22:41,114 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 17:22:41,640 WARN ]: Spent 435.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2018-06-22 17:22:41,885 WARN ]: Spent 164.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2018-06-22 17:22:42,122 WARN ]: Spent 213.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2018-06-22 17:22:42,155 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:22:42,155 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 17:22:42,156 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 17:22:42,156 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 17:22:42,157 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:22:42,157 INFO ]: With dead ends: 17 [2018-06-22 17:22:42,157 INFO ]: Without dead ends: 17 [2018-06-22 17:22:42,157 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-06-22 17:22:42,158 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 17:22:42,160 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 17:22:42,160 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 17:22:42,161 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 17:22:42,161 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 17:22:42,161 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:22:42,161 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 17:22:42,161 INFO ]: Interpolant automaton has 12 states. [2018-06-22 17:22:42,161 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 17:22:42,162 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 17:22:42,162 INFO ]: Found error trace [2018-06-22 17:22:42,162 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:22:42,162 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:22:42,162 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 17:22:42,162 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:22:42,162 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:22:42,163 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:22:42,163 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 17:22:42,163 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:22:42,221 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:22:42,671 WARN ]: Spent 138.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-06-22 17:22:42,890 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 17:22:42,890 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 17:22:42,890 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 17:22:42,905 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 17:22:42,942 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 17:22:42,942 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:22:42,945 INFO ]: Computing forward predicates... [2018-06-22 17:22:42,977 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:22:42,987 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 17:22:43,005 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:22:43,950 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 17:22:43,971 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 17:22:43,971 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 17:22:43,972 INFO ]: Interpolant automaton has 17 states [2018-06-22 17:22:43,972 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 17:22:43,972 INFO ]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2018-06-22 17:22:43,972 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 17:22:44,333 WARN ]: Spent 308.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 112 [2018-06-22 17:22:44,631 WARN ]: Spent 212.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 94 [2018-06-22 17:22:44,977 WARN ]: Spent 305.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92 [2018-06-22 17:22:45,221 WARN ]: Spent 210.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2018-06-22 17:22:45,266 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:22:45,266 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 17:22:45,267 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 17:22:45,267 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 17:22:45,267 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:22:45,267 INFO ]: With dead ends: 19 [2018-06-22 17:22:45,267 INFO ]: Without dead ends: 19 [2018-06-22 17:22:45,268 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2018-06-22 17:22:45,268 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 17:22:45,272 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 17:22:45,272 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 17:22:45,272 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 17:22:45,272 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 17:22:45,273 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:22:45,273 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 17:22:45,273 INFO ]: Interpolant automaton has 17 states. [2018-06-22 17:22:45,273 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 17:22:45,273 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 17:22:45,273 INFO ]: Found error trace [2018-06-22 17:22:45,274 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:22:45,274 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:22:45,274 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-22 17:22:45,274 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:22:45,274 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:22:45,275 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:22:45,275 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 17:22:45,275 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:22:45,353 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:22:45,728 WARN ]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2018-06-22 17:22:46,020 WARN ]: Spent 270.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-06-22 17:22:46,152 WARN ]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2018-06-22 17:22:46,448 WARN ]: Spent 230.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2018-06-22 17:22:46,664 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 17:22:46,664 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 17:22:46,664 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 17:22:46,670 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 17:22:46,732 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 17:22:46,732 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:22:46,740 INFO ]: Computing forward predicates... [2018-06-22 17:22:46,772 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:22:46,785 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 17:22:46,802 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:22:48,255 INFO ]: Checked inductivity of 36 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 17:22:48,286 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 17:22:48,287 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2018-06-22 17:22:48,287 INFO ]: Interpolant automaton has 20 states [2018-06-22 17:22:48,287 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 17:22:48,287 INFO ]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2018-06-22 17:22:48,287 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-22 17:22:48,779 WARN ]: Spent 451.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 136 [2018-06-22 17:22:49,021 WARN ]: Spent 219.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 11 [2018-06-22 17:22:49,396 WARN ]: Spent 332.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 85 [2018-06-22 17:22:49,734 WARN ]: Spent 304.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 98 [2018-06-22 17:22:50,145 WARN ]: Spent 373.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 107 [2018-06-22 17:22:50,432 WARN ]: Spent 232.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 87 [2018-06-22 17:22:50,444 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:22:50,444 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 17:22:50,444 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 17:22:50,444 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-22 17:22:50,444 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:22:50,444 INFO ]: With dead ends: 15 [2018-06-22 17:22:50,444 INFO ]: Without dead ends: 0 [2018-06-22 17:22:50,445 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2018-06-22 17:22:50,445 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 17:22:50,445 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 17:22:50,445 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 17:22:50,445 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 17:22:50,445 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-22 17:22:50,445 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:22:50,445 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 17:22:50,445 INFO ]: Interpolant automaton has 20 states. [2018-06-22 17:22:50,445 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 17:22:50,445 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 17:22:50,449 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:22:50 BoogieIcfgContainer [2018-06-22 17:22:50,449 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 17:22:50,450 INFO ]: Toolchain (without parser) took 15563.75 ms. Allocated memory was 308.8 MB in the beginning and 511.7 MB in the end (delta: 202.9 MB). Free memory was 261.2 MB in the beginning and 399.5 MB in the end (delta: -138.3 MB). Peak memory consumption was 64.6 MB. Max. memory is 3.6 GB. [2018-06-22 17:22:50,451 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 17:22:50,451 INFO ]: ChcToBoogie took 56.89 ms. Allocated memory is still 308.8 MB. Free memory was 261.2 MB in the beginning and 259.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:22:50,452 INFO ]: Boogie Preprocessor took 38.46 ms. Allocated memory is still 308.8 MB. Free memory was 259.2 MB in the beginning and 257.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:22:50,452 INFO ]: RCFGBuilder took 319.27 ms. Allocated memory is still 308.8 MB. Free memory was 257.2 MB in the beginning and 247.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:22:50,453 INFO ]: TraceAbstraction took 15140.16 ms. Allocated memory was 308.8 MB in the beginning and 511.7 MB in the end (delta: 202.9 MB). Free memory was 247.2 MB in the beginning and 399.5 MB in the end (delta: -152.3 MB). Peak memory consumption was 50.6 MB. Max. memory is 3.6 GB. [2018-06-22 17:22:50,456 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 56.89 ms. Allocated memory is still 308.8 MB. Free memory was 261.2 MB in the beginning and 259.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.46 ms. Allocated memory is still 308.8 MB. Free memory was 259.2 MB in the beginning and 257.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 319.27 ms. Allocated memory is still 308.8 MB. Free memory was 257.2 MB in the beginning and 247.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 15140.16 ms. Allocated memory was 308.8 MB in the beginning and 511.7 MB in the end (delta: 202.9 MB). Free memory was 247.2 MB in the beginning and 399.5 MB in the end (delta: -152.3 MB). Peak memory consumption was 50.6 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 3 procedures, 13 locations, 1 error locations. SAFE Result, 15.0s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 5.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 51 SDtfs, 87 SDslu, 231 SDs, 0 SdLazy, 189 SolverSat, 116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 45860 SizeOfPredicates, 172 NumberOfNonLiveVariables, 990 ConjunctsInSsa, 238 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 41/140 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/durationThm_2_e1_118.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_17-22-50-469.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/durationThm_2_e1_118.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_17-22-50-469.csv Received shutdown request...