java -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/chccomp2018/chcToBoogie_automizer.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e7_1255_e8_598.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 16:05:00,646 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 16:05:00,648 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 16:05:00,667 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 16:05:00,668 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 16:05:00,668 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 16:05:00,670 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 16:05:00,671 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 16:05:00,673 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 16:05:00,674 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 16:05:00,674 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 16:05:00,677 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 16:05:00,678 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 16:05:00,679 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 16:05:00,679 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 16:05:00,682 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 16:05:00,684 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 16:05:00,686 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 16:05:00,689 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 16:05:00,690 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 16:05:00,691 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 16:05:00,693 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 16:05:00,694 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 16:05:00,694 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 16:05:00,695 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 16:05:00,696 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 16:05:00,697 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 16:05:00,697 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 16:05:00,698 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 16:05:00,699 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 16:05:00,699 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 16:05:00,700 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 16:05:00,700 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 16:05:00,701 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 16:05:00,702 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 16:05:00,702 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 16:05:00,719 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 16:05:00,720 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 16:05:00,720 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 16:05:00,720 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 16:05:00,722 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 16:05:00,722 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 16:05:00,722 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 16:05:00,722 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 16:05:00,722 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 16:05:00,723 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 16:05:00,723 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 16:05:00,723 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 16:05:00,723 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 16:05:00,723 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 16:05:00,724 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 16:05:00,724 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 16:05:00,724 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 16:05:00,725 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 16:05:00,725 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 16:05:00,770 INFO ]: Repository-Root is: /tmp [2018-06-18 16:05:00,784 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 16:05:00,791 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 16:05:00,793 INFO ]: Initializing SmtParser... [2018-06-18 16:05:00,793 INFO ]: SmtParser initialized [2018-06-18 16:05:00,793 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e7_1255_e8_598.smt2 [2018-06-18 16:05:00,795 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 [2018-06-18 16:05:00,880 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e7_1255_e8_598.smt2 unknown [2018-06-18 16:05:01,330 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e7_1255_e8_598.smt2 [2018-06-18 16:05:01,335 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 16:05:01,340 INFO ]: Walking toolchain with 4 elements. [2018-06-18 16:05:01,341 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 16:05:01,341 INFO ]: Initializing ChcToBoogie... [2018-06-18 16:05:01,341 INFO ]: ChcToBoogie initialized [2018-06-18 16:05:01,348 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 04:05:01" (1/1) ... [2018-06-18 16:05:01,467 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:05:01 Unit [2018-06-18 16:05:01,467 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 16:05:01,468 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 16:05:01,468 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 16:05:01,468 INFO ]: Boogie Preprocessor initialized [2018-06-18 16:05:01,490 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:05:01" (1/1) ... [2018-06-18 16:05:01,490 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:05:01" (1/1) ... [2018-06-18 16:05:01,509 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:05:01" (1/1) ... [2018-06-18 16:05:01,509 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:05:01" (1/1) ... [2018-06-18 16:05:01,514 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:05:01" (1/1) ... [2018-06-18 16:05:01,516 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:05:01" (1/1) ... [2018-06-18 16:05:01,518 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:05:01" (1/1) ... [2018-06-18 16:05:01,521 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 16:05:01,522 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 16:05:01,522 INFO ]: Initializing RCFGBuilder... [2018-06-18 16:05:01,522 INFO ]: RCFGBuilder initialized [2018-06-18 16:05:01,523 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:05:01" (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) [2018-06-18 16:05:01,546 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 16:05:01,546 INFO ]: Found specification of procedure False [2018-06-18 16:05:01,546 INFO ]: Found implementation of procedure False [2018-06-18 16:05:01,546 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 16:05:01,546 INFO ]: Found specification of procedure state [2018-06-18 16:05:01,546 INFO ]: Found implementation of procedure state [2018-06-18 16:05:01,547 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 16:05:01,547 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 16:05:01,547 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 [2018-06-18 16:05:01,902 INFO ]: Using library mode [2018-06-18 16:05:01,903 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 04:05:01 BoogieIcfgContainer [2018-06-18 16:05:01,903 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 16:05:01,905 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 16:05:01,909 INFO ]: Initializing TraceAbstraction... [2018-06-18 16:05:01,913 INFO ]: TraceAbstraction initialized [2018-06-18 16:05:01,913 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 04:05:01" (1/3) ... [2018-06-18 16:05:01,914 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d481580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 04:05:01, skipping insertion in model container [2018-06-18 16:05:01,915 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:05:01" (2/3) ... [2018-06-18 16:05:01,915 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d481580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 04:05:01, skipping insertion in model container [2018-06-18 16:05:01,915 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 04:05:01" (3/3) ... [2018-06-18 16:05:01,918 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 16:05:01,927 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 16:05:01,937 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 16:05:01,990 INFO ]: Using default assertion order modulation [2018-06-18 16:05:01,990 INFO ]: Interprodecural is true [2018-06-18 16:05:01,990 INFO ]: Hoare is false [2018-06-18 16:05:01,990 INFO ]: Compute interpolants for FPandBP [2018-06-18 16:05:01,990 INFO ]: Backedges is TWOTRACK [2018-06-18 16:05:01,990 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 16:05:01,990 INFO ]: Difference is false [2018-06-18 16:05:01,991 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 16:05:01,991 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 16:05:02,009 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 16:05:02,022 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 16:05:02,022 INFO ]: Found error trace [2018-06-18 16:05:02,023 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:05:02,023 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:05:02,030 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-18 16:05:02,032 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:05:02,033 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:05:02,072 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:05:02,073 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:05:02,073 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:05:02,201 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:05:02,211 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:05:02,392 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 16:05:02,396 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 16:05:02,396 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 16:05:02,398 INFO ]: Interpolant automaton has 4 states [2018-06-18 16:05:02,409 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 16:05:02,410 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 16:05:02,411 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 16:05:02,545 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:05:02,545 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 16:05:02,545 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 16:05:02,547 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 16:05:02,547 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:05:02,558 INFO ]: With dead ends: 13 [2018-06-18 16:05:02,558 INFO ]: Without dead ends: 13 [2018-06-18 16:05:02,560 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 [2018-06-18 16:05:02,574 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 16:05:02,598 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 16:05:02,599 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 16:05:02,600 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 16:05:02,602 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 16:05:02,602 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:05:02,602 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 16:05:02,602 INFO ]: Interpolant automaton has 4 states. [2018-06-18 16:05:02,602 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 16:05:02,603 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 16:05:02,603 INFO ]: Found error trace [2018-06-18 16:05:02,603 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:05:02,603 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:05:02,603 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-18 16:05:02,603 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:05:02,603 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:05:02,604 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:05:02,604 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:05:02,604 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:05:02,666 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:05:02,667 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:05:03,000 WARN ]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-18 16:05:03,022 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 16:05:03,022 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:05:03,022 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 [2018-06-18 16:05:03,032 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:05:03,177 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:05:03,188 INFO ]: Computing forward predicates... [2018-06-18 16:05:03,612 WARN ]: Spent 205.00 ms on a formula simplification. DAG size of input: 5 DAG size of output: 4 [2018-06-18 16:05:03,781 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 16:05:03,807 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:05:03,807 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-18 16:05:03,808 INFO ]: Interpolant automaton has 8 states [2018-06-18 16:05:03,808 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-18 16:05:03,808 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-18 16:05:03,808 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-18 16:05:04,264 WARN ]: Spent 117.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-06-18 16:05:04,376 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:05:04,376 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 16:05:04,377 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 16:05:04,377 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-18 16:05:04,377 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:05:04,377 INFO ]: With dead ends: 15 [2018-06-18 16:05:04,377 INFO ]: Without dead ends: 15 [2018-06-18 16:05:04,378 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-18 16:05:04,378 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 16:05:04,381 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 16:05:04,381 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 16:05:04,382 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 16:05:04,382 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 16:05:04,382 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:05:04,382 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 16:05:04,382 INFO ]: Interpolant automaton has 8 states. [2018-06-18 16:05:04,382 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 16:05:04,382 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 16:05:04,382 INFO ]: Found error trace [2018-06-18 16:05:04,382 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:05:04,383 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:05:04,383 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-18 16:05:04,383 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:05:04,383 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:05:04,384 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:05:04,384 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:05:04,384 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:05:04,452 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:05:04,454 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:05:05,103 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 16:05:05,103 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:05:05,103 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 [2018-06-18 16:05:05,117 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 16:05:05,257 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 16:05:05,257 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:05:05,262 INFO ]: Computing forward predicates... [2018-06-18 16:05:05,476 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 16:05:05,497 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:05:05,497 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-18 16:05:05,498 INFO ]: Interpolant automaton has 12 states [2018-06-18 16:05:05,498 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-18 16:05:05,498 INFO ]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-06-18 16:05:05,498 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-18 16:05:05,778 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:05:05,778 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-18 16:05:05,779 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-18 16:05:05,779 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-18 16:05:05,779 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:05:05,779 INFO ]: With dead ends: 17 [2018-06-18 16:05:05,779 INFO ]: Without dead ends: 17 [2018-06-18 16:05:05,780 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2018-06-18 16:05:05,780 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-18 16:05:05,783 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-18 16:05:05,783 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-18 16:05:05,783 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-18 16:05:05,784 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-18 16:05:05,784 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:05:05,784 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-18 16:05:05,784 INFO ]: Interpolant automaton has 12 states. [2018-06-18 16:05:05,784 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-18 16:05:05,786 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-18 16:05:05,786 INFO ]: Found error trace [2018-06-18 16:05:05,786 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:05:05,786 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:05:05,787 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-18 16:05:05,787 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:05:05,787 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:05:05,787 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:05:05,787 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 16:05:05,787 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:05:05,941 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:05:05,942 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:05:06,389 WARN ]: Spent 155.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2018-06-18 16:05:06,735 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 16:05:06,735 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:05:06,736 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) [2018-06-18 16:05:06,751 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 16:05:06,917 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-18 16:05:06,917 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:05:06,925 INFO ]: Computing forward predicates... [2018-06-18 16:05:10,523 WARN ]: Spent 964.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 50 [2018-06-18 16:05:11,006 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 16:05:11,040 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:05:11,040 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-18 16:05:11,041 INFO ]: Interpolant automaton has 16 states [2018-06-18 16:05:11,041 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-18 16:05:11,041 INFO ]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2018-06-18 16:05:11,041 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-18 16:05:12,326 WARN ]: Spent 940.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2018-06-18 16:05:13,921 WARN ]: Spent 1.39 s on a formula simplification. DAG size of input: 138 DAG size of output: 138 [2018-06-18 16:05:14,350 WARN ]: Spent 293.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 75 [2018-06-18 16:05:15,178 WARN ]: Spent 786.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2018-06-18 16:05:15,814 WARN ]: Spent 575.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 132 [2018-06-18 16:05:15,860 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:05:15,860 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-18 16:05:15,861 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-18 16:05:15,861 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-18 16:05:15,861 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:05:15,862 INFO ]: With dead ends: 19 [2018-06-18 16:05:15,862 INFO ]: Without dead ends: 19 [2018-06-18 16:05:15,862 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2018-06-18 16:05:15,862 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-18 16:05:15,865 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-18 16:05:15,865 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-18 16:05:15,866 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-18 16:05:15,866 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-18 16:05:15,866 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:05:15,866 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-18 16:05:15,866 INFO ]: Interpolant automaton has 16 states. [2018-06-18 16:05:15,866 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-18 16:05:15,867 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-18 16:05:15,867 INFO ]: Found error trace [2018-06-18 16:05:15,867 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:05:15,867 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:05:15,868 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-18 16:05:15,868 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:05:15,868 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:05:15,868 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:05:15,868 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 16:05:15,868 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:05:16,056 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:05:16,057 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:05:16,752 WARN ]: Spent 412.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2018-06-18 16:05:17,058 WARN ]: Spent 128.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2018-06-18 16:05:17,204 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-18 16:05:17,204 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:05:17,204 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) [2018-06-18 16:05:17,219 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 16:05:17,361 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-18 16:05:17,361 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:05:17,369 INFO ]: Computing forward predicates... [2018-06-18 16:05:17,482 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 16:05:17,576 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:05:18,972 WARN ]: Spent 210.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 27 [2018-06-18 16:05:20,057 WARN ]: Spent 615.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 29 [2018-06-18 16:05:21,039 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-18 16:05:21,060 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:05:21,060 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2018-06-18 16:05:21,061 INFO ]: Interpolant automaton has 20 states [2018-06-18 16:05:21,061 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-18 16:05:21,061 INFO ]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2018-06-18 16:05:21,061 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-18 16:05:21,501 WARN ]: Spent 303.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 111 [2018-06-18 16:05:21,943 WARN ]: Spent 339.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 107 [2018-06-18 16:05:22,356 WARN ]: Spent 376.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 106 [2018-06-18 16:05:22,377 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:05:22,377 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 16:05:22,377 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-18 16:05:22,377 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-18 16:05:22,377 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:05:22,377 INFO ]: With dead ends: 15 [2018-06-18 16:05:22,377 INFO ]: Without dead ends: 0 [2018-06-18 16:05:22,378 INFO ]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2018-06-18 16:05:22,378 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-18 16:05:22,378 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-18 16:05:22,378 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-18 16:05:22,378 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-18 16:05:22,378 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-18 16:05:22,378 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:05:22,378 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-18 16:05:22,378 INFO ]: Interpolant automaton has 20 states. [2018-06-18 16:05:22,378 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-18 16:05:22,378 INFO ]: Finished isEmpty. No accepting run. [2018-06-18 16:05:22,382 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 04:05:22 BoogieIcfgContainer [2018-06-18 16:05:22,382 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 16:05:22,383 INFO ]: Toolchain (without parser) took 21047.25 ms. Allocated memory was 309.3 MB in the beginning and 583.5 MB in the end (delta: 274.2 MB). Free memory was 251.5 MB in the beginning and 306.6 MB in the end (delta: -55.1 MB). Peak memory consumption was 219.1 MB. Max. memory is 3.6 GB. [2018-06-18 16:05:22,383 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 275.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 16:05:22,384 INFO ]: ChcToBoogie took 126.95 ms. Allocated memory is still 309.3 MB. Free memory was 250.5 MB in the beginning and 247.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-18 16:05:22,384 INFO ]: Boogie Preprocessor took 53.17 ms. Allocated memory is still 309.3 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. [2018-06-18 16:05:22,384 INFO ]: RCFGBuilder took 381.44 ms. Allocated memory is still 309.3 MB. Free memory was 245.5 MB in the beginning and 220.9 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 3.6 GB. [2018-06-18 16:05:22,385 INFO ]: TraceAbstraction took 20477.46 ms. Allocated memory was 309.3 MB in the beginning and 583.5 MB in the end (delta: 274.2 MB). Free memory was 220.9 MB in the beginning and 306.6 MB in the end (delta: -85.7 MB). Peak memory consumption was 188.5 MB. Max. memory is 3.6 GB. [2018-06-18 16:05:22,387 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 309.3 MB. Free memory is still 275.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 126.95 ms. Allocated memory is still 309.3 MB. Free memory was 250.5 MB in the beginning and 247.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 53.17 ms. Allocated memory is still 309.3 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 381.44 ms. Allocated memory is still 309.3 MB. Free memory was 245.5 MB in the beginning and 220.9 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 3.6 GB. * TraceAbstraction took 20477.46 ms. Allocated memory was 309.3 MB in the beginning and 583.5 MB in the end (delta: 274.2 MB). Free memory was 220.9 MB in the beginning and 306.6 MB in the end (delta: -85.7 MB). Peak memory consumption was 188.5 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, 20.4s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 7.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 57 SDslu, 195 SDs, 0 SdLazy, 170 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 11.7s 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: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 11.7s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 37136 SizeOfPredicates, 152 NumberOfNonLiveVariables, 3136 ConjunctsInSsa, 161 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_e7_1255_e8_598.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_16-05-22-396.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e7_1255_e8_598.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_16-05-22-396.csv Received shutdown request...