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/metros_1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:06:01,458 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:06:01,469 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:06:01,483 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:06:01,483 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:06:01,485 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:06:01,487 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:06:01,492 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:06:01,495 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:06:01,498 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:06:01,499 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:06:01,499 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:06:01,500 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:06:01,502 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:06:01,506 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:06:01,507 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:06:01,508 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:06:01,523 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:06:01,525 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:06:01,526 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:06:01,527 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:06:01,529 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:06:01,530 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:06:01,533 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:06:01,534 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:06:01,535 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:06:01,536 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:06:01,538 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:06:01,540 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:06:01,540 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:06:01,540 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:06:01,541 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:06:01,541 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:06:01,547 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:06:01,548 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:06:01,548 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 19:06:01,569 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:06:01,569 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:06:01,569 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:06:01,569 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:06:01,570 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:06:01,571 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:06:01,572 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:06:01,572 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:06:01,572 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:06:01,572 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:06:01,573 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:06:01,573 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:06:01,573 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:06:01,573 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:06:01,573 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:06:01,574 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:06:01,574 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:06:01,574 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:06:01,574 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:06:01,576 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:06:01,577 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:06:01,634 INFO ]: Repository-Root is: /tmp [2018-06-22 19:06:01,651 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:06:01,657 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:06:01,659 INFO ]: Initializing SmtParser... [2018-06-22 19:06:01,659 INFO ]: SmtParser initialized [2018-06-22 19:06:01,661 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1.smt2 [2018-06-22 19:06:01,662 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 19:06:01,765 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1.smt2 unknown [2018-06-22 19:06:02,349 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1.smt2 [2018-06-22 19:06:02,353 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:06:02,368 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:06:02,369 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:06:02,369 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:06:02,369 INFO ]: ChcToBoogie initialized [2018-06-22 19:06:02,372 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:06:02" (1/1) ... [2018-06-22 19:06:02,424 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:06:02 Unit [2018-06-22 19:06:02,424 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:06:02,425 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:06:02,425 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:06:02,425 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:06:02,447 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:06:02" (1/1) ... [2018-06-22 19:06:02,447 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:06:02" (1/1) ... [2018-06-22 19:06:02,461 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:06:02" (1/1) ... [2018-06-22 19:06:02,462 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:06:02" (1/1) ... [2018-06-22 19:06:02,478 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:06:02" (1/1) ... [2018-06-22 19:06:02,479 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:06:02" (1/1) ... [2018-06-22 19:06:02,481 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:06:02" (1/1) ... [2018-06-22 19:06:02,494 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:06:02,494 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:06:02,494 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:06:02,494 INFO ]: RCFGBuilder initialized [2018-06-22 19:06:02,495 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:06:02" (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 19:06:02,530 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:06:02,530 INFO ]: Found specification of procedure False [2018-06-22 19:06:02,530 INFO ]: Found implementation of procedure False [2018-06-22 19:06:02,530 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:06:02,530 INFO ]: Found specification of procedure state [2018-06-22 19:06:02,530 INFO ]: Found implementation of procedure state [2018-06-22 19:06:02,530 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:06:02,530 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:06:02,530 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 19:06:02,877 INFO ]: Using library mode [2018-06-22 19:06:02,878 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:06:02 BoogieIcfgContainer [2018-06-22 19:06:02,878 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:06:02,879 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:06:02,879 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:06:02,882 INFO ]: TraceAbstraction initialized [2018-06-22 19:06:02,882 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:06:02" (1/3) ... [2018-06-22 19:06:02,883 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d42acc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:06:02, skipping insertion in model container [2018-06-22 19:06:02,883 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:06:02" (2/3) ... [2018-06-22 19:06:02,884 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d42acc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:06:02, skipping insertion in model container [2018-06-22 19:06:02,884 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:06:02" (3/3) ... [2018-06-22 19:06:02,886 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:06:02,895 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:06:02,906 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:06:02,955 INFO ]: Using default assertion order modulation [2018-06-22 19:06:02,956 INFO ]: Interprodecural is true [2018-06-22 19:06:02,956 INFO ]: Hoare is false [2018-06-22 19:06:02,956 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:06:02,956 INFO ]: Backedges is TWOTRACK [2018-06-22 19:06:02,956 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:06:02,956 INFO ]: Difference is false [2018-06-22 19:06:02,956 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:06:02,956 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:06:02,973 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:06:02,984 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:06:02,984 INFO ]: Found error trace [2018-06-22 19:06:02,985 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:06:02,985 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:06:02,990 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 19:06:02,992 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:06:02,993 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:06:03,038 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:06:03,038 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:06:03,038 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:06:03,157 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:06:03,294 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:06:03,296 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:06:03,296 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:06:03,298 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:06:03,311 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:06:03,311 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:06:03,313 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:06:03,459 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:06:03,459 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:06:03,461 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:06:03,462 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:06:03,463 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:06:03,478 INFO ]: With dead ends: 13 [2018-06-22 19:06:03,478 INFO ]: Without dead ends: 13 [2018-06-22 19:06:03,481 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 19:06:03,515 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:06:03,535 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:06:03,536 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:06:03,537 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:06:03,538 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:06:03,539 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:06:03,539 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:06:03,539 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:06:03,539 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:06:03,540 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:06:03,540 INFO ]: Found error trace [2018-06-22 19:06:03,540 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:06:03,540 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:06:03,540 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 19:06:03,540 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:06:03,540 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:06:03,541 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:06:03,541 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:06:03,541 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:06:03,632 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:06:04,067 WARN ]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 19:06:04,197 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:06:04,198 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:06:04,198 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 19:06:04,209 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:06:04,371 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:06:04,383 INFO ]: Computing forward predicates... [2018-06-22 19:06:04,846 WARN ]: Spent 216.00 ms on a formula simplification. DAG size of input: 5 DAG size of output: 4 [2018-06-22 19:06:05,063 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:06:05,100 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:06:05,100 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:06:05,101 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:06:05,101 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:06:05,101 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:06:05,102 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:06:05,373 WARN ]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 4 [2018-06-22 19:06:05,658 WARN ]: Spent 111.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-06-22 19:06:05,803 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:06:05,803 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:06:05,804 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:06:05,804 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:06:05,804 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:06:05,804 INFO ]: With dead ends: 15 [2018-06-22 19:06:05,804 INFO ]: Without dead ends: 15 [2018-06-22 19:06:05,805 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 19:06:05,805 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:06:05,808 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:06:05,808 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:06:05,809 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:06:05,809 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:06:05,809 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:06:05,809 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:06:05,809 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:06:05,809 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:06:05,809 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:06:05,809 INFO ]: Found error trace [2018-06-22 19:06:05,809 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:06:05,809 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:06:05,809 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 19:06:05,809 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:06:05,809 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:06:05,810 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:06:05,810 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:06:05,810 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:06:05,909 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:06:06,467 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:06:06,467 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:06:06,467 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 19:06:06,475 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:06:06,589 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:06:06,589 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:06:06,594 INFO ]: Computing forward predicates... [2018-06-22 19:06:07,058 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:06:07,080 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:06:07,080 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 19:06:07,081 INFO ]: Interpolant automaton has 12 states [2018-06-22 19:06:07,081 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 19:06:07,081 INFO ]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-06-22 19:06:07,081 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 19:06:07,458 WARN ]: Spent 104.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2018-06-22 19:06:07,535 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:06:07,561 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:06:07,562 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:06:07,562 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 19:06:07,562 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:06:07,563 INFO ]: With dead ends: 17 [2018-06-22 19:06:07,563 INFO ]: Without dead ends: 17 [2018-06-22 19:06:07,563 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:06:07,563 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:06:07,569 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:06:07,569 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:06:07,570 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:06:07,570 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:06:07,570 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:06:07,570 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:06:07,570 INFO ]: Interpolant automaton has 12 states. [2018-06-22 19:06:07,570 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:06:07,571 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:06:07,571 INFO ]: Found error trace [2018-06-22 19:06:07,571 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:06:07,571 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:06:07,571 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 19:06:07,571 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:06:07,571 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:06:07,574 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:06:07,574 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:06:07,575 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:06:07,740 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:06:08,300 WARN ]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 19:06:08,897 WARN ]: Spent 512.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2018-06-22 19:06:09,138 WARN ]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2018-06-22 19:06:09,164 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:06:09,164 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:06:09,164 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) [2018-06-22 19:06:09,183 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:06:09,376 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:06:09,376 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:06:09,382 INFO ]: Computing forward predicates... [2018-06-22 19:06:09,962 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:06:09,980 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:06:09,996 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:06:10,045 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:06:10,057 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:06:10,072 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:06:12,158 WARN ]: Spent 1.32 s on a formula simplification. DAG size of input: 144 DAG size of output: 63 [2018-06-22 19:06:12,415 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:06:12,441 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:06:12,441 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-22 19:06:12,441 INFO ]: Interpolant automaton has 16 states [2018-06-22 19:06:12,441 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 19:06:12,442 INFO ]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:06:12,442 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-22 19:06:13,165 WARN ]: Spent 676.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 165 [2018-06-22 19:06:13,526 WARN ]: Spent 294.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 73 [2018-06-22 19:06:14,366 WARN ]: Spent 799.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2018-06-22 19:06:15,154 WARN ]: Spent 647.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 159 [2018-06-22 19:06:15,204 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:06:15,205 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 19:06:15,206 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 19:06:15,206 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-22 19:06:15,206 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:06:15,207 INFO ]: With dead ends: 19 [2018-06-22 19:06:15,207 INFO ]: Without dead ends: 19 [2018-06-22 19:06:15,207 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2018-06-22 19:06:15,207 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 19:06:15,209 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 19:06:15,209 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 19:06:15,210 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 19:06:15,210 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 19:06:15,210 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:06:15,210 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 19:06:15,210 INFO ]: Interpolant automaton has 16 states. [2018-06-22 19:06:15,210 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 19:06:15,211 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 19:06:15,211 INFO ]: Found error trace [2018-06-22 19:06:15,211 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:06:15,211 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:06:15,211 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-22 19:06:15,211 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:06:15,211 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:06:15,214 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:06:15,214 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:06:15,214 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:06:15,305 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:06:15,796 WARN ]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 19:06:16,268 WARN ]: Spent 398.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2018-06-22 19:06:16,498 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:06:16,498 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:06:16,498 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 19:06:16,504 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 19:06:16,646 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 19:06:16,646 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:06:16,657 INFO ]: Computing forward predicates... [2018-06-22 19:06:17,171 WARN ]: Spent 155.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2018-06-22 19:06:17,234 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:06:27,584 WARN ]: Spent 7.03 s on a formula simplification. DAG size of input: 530 DAG size of output: 76 [2018-06-22 19:06:29,163 WARN ]: Spent 832.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 43 [2018-06-22 19:06:34,215 WARN ]: Spent 1.37 s on a formula simplification. DAG size of input: 118 DAG size of output: 75 [2018-06-22 19:06:34,874 WARN ]: Spent 124.00 ms on a formula simplification. DAG size of input: 5 DAG size of output: 4 [2018-06-22 19:06:34,883 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:06:34,904 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:06:34,904 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2018-06-22 19:06:34,905 INFO ]: Interpolant automaton has 20 states [2018-06-22 19:06:34,905 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 19:06:34,905 INFO ]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2018-06-22 19:06:34,905 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-22 19:06:35,797 WARN ]: Spent 828.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 149 [2018-06-22 19:06:36,082 WARN ]: Spent 251.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 59 [2018-06-22 19:06:37,631 WARN ]: Spent 1.48 s on a formula simplification. DAG size of input: 246 DAG size of output: 146 [2018-06-22 19:06:39,116 WARN ]: Spent 1.41 s on a formula simplification. DAG size of input: 236 DAG size of output: 179 [2018-06-22 19:06:40,561 WARN ]: Spent 1.37 s on a formula simplification. DAG size of input: 186 DAG size of output: 150 [2018-06-22 19:06:41,770 WARN ]: Spent 1.11 s on a formula simplification. DAG size of input: 185 DAG size of output: 152 [2018-06-22 19:06:41,790 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:06:41,790 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:06:41,791 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 19:06:41,791 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-22 19:06:41,791 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:06:41,791 INFO ]: With dead ends: 15 [2018-06-22 19:06:41,791 INFO ]: Without dead ends: 0 [2018-06-22 19:06:41,791 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2018-06-22 19:06:41,791 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 19:06:41,791 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 19:06:41,791 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 19:06:41,791 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 19:06:41,791 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-22 19:06:41,791 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:06:41,791 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 19:06:41,791 INFO ]: Interpolant automaton has 20 states. [2018-06-22 19:06:41,791 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 19:06:41,791 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 19:06:41,795 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:06:41 BoogieIcfgContainer [2018-06-22 19:06:41,795 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:06:41,796 INFO ]: Toolchain (without parser) took 39442.28 ms. Allocated memory was 310.9 MB in the beginning and 858.8 MB in the end (delta: 547.9 MB). Free memory was 249.4 MB in the beginning and 364.9 MB in the end (delta: -115.5 MB). Peak memory consumption was 432.4 MB. Max. memory is 3.6 GB. [2018-06-22 19:06:41,796 INFO ]: SmtParser took 0.12 ms. Allocated memory is still 310.9 MB. Free memory is still 276.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:06:41,797 INFO ]: ChcToBoogie took 55.91 ms. Allocated memory is still 310.9 MB. Free memory was 249.4 MB in the beginning and 247.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:06:41,797 INFO ]: Boogie Preprocessor took 68.60 ms. Allocated memory is still 310.9 MB. Free memory was 247.4 MB in the beginning and 245.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:06:41,797 INFO ]: RCFGBuilder took 383.68 ms. Allocated memory is still 310.9 MB. Free memory was 245.4 MB in the beginning and 220.2 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 3.6 GB. [2018-06-22 19:06:41,798 INFO ]: TraceAbstraction took 38916.12 ms. Allocated memory was 310.9 MB in the beginning and 858.8 MB in the end (delta: 547.9 MB). Free memory was 220.2 MB in the beginning and 364.9 MB in the end (delta: -144.6 MB). Peak memory consumption was 403.2 MB. Max. memory is 3.6 GB. [2018-06-22 19:06:41,801 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.12 ms. Allocated memory is still 310.9 MB. Free memory is still 276.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 55.91 ms. Allocated memory is still 310.9 MB. Free memory was 249.4 MB in the beginning and 247.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 68.60 ms. Allocated memory is still 310.9 MB. Free memory was 247.4 MB in the beginning and 245.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 383.68 ms. Allocated memory is still 310.9 MB. Free memory was 245.4 MB in the beginning and 220.2 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 38916.12 ms. Allocated memory was 310.9 MB in the beginning and 858.8 MB in the end (delta: 547.9 MB). Free memory was 220.2 MB in the beginning and 364.9 MB in the end (delta: -144.6 MB). Peak memory consumption was 403.2 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, 38.8s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 11.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 76 SDslu, 201 SDs, 0 SdLazy, 179 SolverSat, 104 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 26.1s 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: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 26.3s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 118984 SizeOfPredicates, 157 NumberOfNonLiveVariables, 3136 ConjunctsInSsa, 196 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 40/140 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/metros_1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-06-41-811.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-06-41-811.csv Received shutdown request...