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/speed2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 16:37:22,466 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 16:37:22,470 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 16:37:22,484 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 16:37:22,484 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 16:37:22,485 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 16:37:22,486 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 16:37:22,489 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 16:37:22,491 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 16:37:22,491 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 16:37:22,493 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 16:37:22,494 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 16:37:22,494 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 16:37:22,495 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 16:37:22,497 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 16:37:22,498 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 16:37:22,500 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 16:37:22,509 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 16:37:22,514 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 16:37:22,515 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 16:37:22,516 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 16:37:22,517 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 16:37:22,518 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 16:37:22,518 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 16:37:22,518 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 16:37:22,519 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 16:37:22,521 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 16:37:22,521 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 16:37:22,522 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 16:37:22,522 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 16:37:22,523 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 16:37:22,523 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 16:37:22,524 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 16:37:22,528 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 16:37:22,528 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 16:37:22,529 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 16:37:22,543 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 16:37:22,543 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 16:37:22,543 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 16:37:22,544 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 16:37:22,545 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 16:37:22,545 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 16:37:22,545 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 16:37:22,546 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 16:37:22,546 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 16:37:22,546 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 16:37:22,546 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 16:37:22,546 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 16:37:22,547 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 16:37:22,547 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 16:37:22,547 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 16:37:22,547 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 16:37:22,547 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 16:37:22,549 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 16:37:22,549 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 16:37:22,595 INFO ]: Repository-Root is: /tmp [2018-06-18 16:37:22,610 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 16:37:22,615 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 16:37:22,616 INFO ]: Initializing SmtParser... [2018-06-18 16:37:22,616 INFO ]: SmtParser initialized [2018-06-18 16:37:22,617 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/speed2.smt2 [2018-06-18 16:37:22,618 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 16:37:22,710 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/speed2.smt2 unknown [2018-06-18 16:37:23,023 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/speed2.smt2 [2018-06-18 16:37:23,028 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 16:37:23,044 INFO ]: Walking toolchain with 4 elements. [2018-06-18 16:37:23,044 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 16:37:23,044 INFO ]: Initializing ChcToBoogie... [2018-06-18 16:37:23,044 INFO ]: ChcToBoogie initialized [2018-06-18 16:37:23,051 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 04:37:23" (1/1) ... [2018-06-18 16:37:23,110 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:23 Unit [2018-06-18 16:37:23,110 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 16:37:23,111 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 16:37:23,111 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 16:37:23,111 INFO ]: Boogie Preprocessor initialized [2018-06-18 16:37:23,142 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:23" (1/1) ... [2018-06-18 16:37:23,142 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:23" (1/1) ... [2018-06-18 16:37:23,153 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:23" (1/1) ... [2018-06-18 16:37:23,153 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:23" (1/1) ... [2018-06-18 16:37:23,164 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:23" (1/1) ... [2018-06-18 16:37:23,165 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:23" (1/1) ... [2018-06-18 16:37:23,166 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:23" (1/1) ... [2018-06-18 16:37:23,169 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 16:37:23,169 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 16:37:23,169 INFO ]: Initializing RCFGBuilder... [2018-06-18 16:37:23,169 INFO ]: RCFGBuilder initialized [2018-06-18 16:37:23,170 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:23" (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 16:37:23,190 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 16:37:23,190 INFO ]: Found specification of procedure False [2018-06-18 16:37:23,191 INFO ]: Found implementation of procedure False [2018-06-18 16:37:23,191 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 16:37:23,191 INFO ]: Found specification of procedure state [2018-06-18 16:37:23,191 INFO ]: Found implementation of procedure state [2018-06-18 16:37:23,191 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 16:37:23,191 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 16:37:23,191 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 16:37:23,471 INFO ]: Using library mode [2018-06-18 16:37:23,472 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 04:37:23 BoogieIcfgContainer [2018-06-18 16:37:23,472 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 16:37:23,474 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 16:37:23,474 INFO ]: Initializing TraceAbstraction... [2018-06-18 16:37:23,477 INFO ]: TraceAbstraction initialized [2018-06-18 16:37:23,477 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 04:37:23" (1/3) ... [2018-06-18 16:37:23,478 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230d8f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 04:37:23, skipping insertion in model container [2018-06-18 16:37:23,478 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:23" (2/3) ... [2018-06-18 16:37:23,478 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230d8f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 04:37:23, skipping insertion in model container [2018-06-18 16:37:23,479 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 04:37:23" (3/3) ... [2018-06-18 16:37:23,480 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 16:37:23,490 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 16:37:23,501 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 16:37:23,552 INFO ]: Using default assertion order modulation [2018-06-18 16:37:23,552 INFO ]: Interprodecural is true [2018-06-18 16:37:23,552 INFO ]: Hoare is false [2018-06-18 16:37:23,552 INFO ]: Compute interpolants for FPandBP [2018-06-18 16:37:23,552 INFO ]: Backedges is TWOTRACK [2018-06-18 16:37:23,552 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 16:37:23,552 INFO ]: Difference is false [2018-06-18 16:37:23,552 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 16:37:23,552 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 16:37:23,570 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 16:37:23,581 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 16:37:23,581 INFO ]: Found error trace [2018-06-18 16:37:23,582 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:37:23,583 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:37:23,588 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-18 16:37:23,590 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:37:23,590 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:37:23,645 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:37:23,645 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:37:23,645 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:37:23,702 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:37:23,710 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:37:23,794 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 16:37:23,796 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 16:37:23,796 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 16:37:23,797 INFO ]: Interpolant automaton has 4 states [2018-06-18 16:37:23,808 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 16:37:23,809 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 16:37:23,810 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 16:37:23,917 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:37:23,917 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 16:37:23,918 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 16:37:23,920 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 16:37:23,920 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:37:23,935 INFO ]: With dead ends: 13 [2018-06-18 16:37:23,935 INFO ]: Without dead ends: 13 [2018-06-18 16:37:23,937 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 16:37:23,956 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 16:37:23,983 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 16:37:23,984 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 16:37:23,985 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 16:37:23,986 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 16:37:23,986 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:37:23,986 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 16:37:23,986 INFO ]: Interpolant automaton has 4 states. [2018-06-18 16:37:23,986 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 16:37:23,988 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 16:37:23,988 INFO ]: Found error trace [2018-06-18 16:37:23,988 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:37:23,988 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:37:23,988 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-18 16:37:23,988 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:37:23,988 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:37:23,989 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:37:23,989 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:37:23,989 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:37:24,045 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:37:24,046 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:37:24,251 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 16:37:24,252 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:37:24,252 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 16:37:24,260 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:37:24,319 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:37:24,329 INFO ]: Computing forward predicates... [2018-06-18 16:37:24,763 WARN ]: Spent 136.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-06-18 16:37:24,920 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 16:37:24,954 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:37:24,954 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-18 16:37:24,955 INFO ]: Interpolant automaton has 8 states [2018-06-18 16:37:24,955 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-18 16:37:24,955 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-18 16:37:24,955 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-18 16:37:25,304 WARN ]: Spent 138.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-06-18 16:37:25,363 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:37:25,363 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 16:37:25,364 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 16:37:25,364 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-18 16:37:25,365 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:37:25,365 INFO ]: With dead ends: 15 [2018-06-18 16:37:25,365 INFO ]: Without dead ends: 15 [2018-06-18 16:37:25,366 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-18 16:37:25,366 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 16:37:25,370 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 16:37:25,370 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 16:37:25,371 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 16:37:25,371 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 16:37:25,371 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:37:25,371 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 16:37:25,371 INFO ]: Interpolant automaton has 8 states. [2018-06-18 16:37:25,371 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 16:37:25,372 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 16:37:25,372 INFO ]: Found error trace [2018-06-18 16:37:25,372 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:37:25,372 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:37:25,372 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-18 16:37:25,372 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:37:25,372 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:37:25,373 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:37:25,373 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:37:25,373 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:37:25,506 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:37:25,507 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:37:26,880 WARN ]: Spent 1.06 s on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-06-18 16:37:27,740 WARN ]: Spent 769.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 92 [2018-06-18 16:37:28,075 WARN ]: Spent 161.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2018-06-18 16:37:28,090 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 16:37:28,090 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:37:28,090 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 16:37:28,099 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 16:37:28,165 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 16:37:28,165 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:37:28,170 INFO ]: Computing forward predicates... [2018-06-18 16:37:28,476 WARN ]: Spent 154.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 25 [2018-06-18 16:37:29,921 WARN ]: Spent 431.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 28 [2018-06-18 16:37:30,048 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 16:37:30,073 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:37:30,073 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-18 16:37:30,074 INFO ]: Interpolant automaton has 13 states [2018-06-18 16:37:30,074 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-18 16:37:30,074 INFO ]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-06-18 16:37:30,074 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-18 16:37:30,243 WARN ]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2018-06-18 16:37:30,896 WARN ]: Spent 615.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 117 [2018-06-18 16:37:31,569 WARN ]: Spent 599.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 122 [2018-06-18 16:37:32,071 WARN ]: Spent 461.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 113 [2018-06-18 16:37:32,114 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:37:32,114 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-18 16:37:32,115 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-18 16:37:32,116 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-18 16:37:32,116 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:37:32,116 INFO ]: With dead ends: 17 [2018-06-18 16:37:32,116 INFO ]: Without dead ends: 17 [2018-06-18 16:37:32,117 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-06-18 16:37:32,117 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-18 16:37:32,120 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-18 16:37:32,120 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-18 16:37:32,121 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-18 16:37:32,121 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-18 16:37:32,121 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:37:32,121 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-18 16:37:32,121 INFO ]: Interpolant automaton has 13 states. [2018-06-18 16:37:32,121 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-18 16:37:32,122 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-18 16:37:32,122 INFO ]: Found error trace [2018-06-18 16:37:32,122 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:37:32,122 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:37:32,122 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-18 16:37:32,122 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:37:32,122 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:37:32,123 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:37:32,123 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 16:37:32,123 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:37:32,171 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:37:32,171 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:37:32,576 WARN ]: Spent 156.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2018-06-18 16:37:33,024 WARN ]: Spent 435.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2018-06-18 16:37:33,331 WARN ]: Spent 241.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 66 [2018-06-18 16:37:33,531 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 16:37:33,531 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:37:33,531 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 [2018-06-18 16:37:33,539 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-18 16:37:33,586 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-18 16:37:33,586 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:37:33,591 INFO ]: Computing forward predicates... [2018-06-18 16:37:33,803 WARN ]: Spent 145.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 27 [2018-06-18 16:37:33,823 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:37:35,177 WARN ]: Spent 1.13 s on a formula simplification. DAG size of input: 176 DAG size of output: 55 [2018-06-18 16:37:35,301 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:37:39,786 WARN ]: Spent 3.87 s on a formula simplification. DAG size of input: 384 DAG size of output: 68 [2018-06-18 16:37:40,488 WARN ]: Spent 170.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2018-06-18 16:37:41,167 WARN ]: Spent 188.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 32 [2018-06-18 16:37:41,399 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 16:37:41,419 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:37:41,419 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-18 16:37:41,420 INFO ]: Interpolant automaton has 17 states [2018-06-18 16:37:41,420 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-18 16:37:41,420 INFO ]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2018-06-18 16:37:41,420 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-18 16:37:41,749 WARN ]: Spent 281.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2018-06-18 16:37:43,675 WARN ]: Spent 1.85 s on a formula simplification. DAG size of input: 223 DAG size of output: 158 [2018-06-18 16:37:45,232 WARN ]: Spent 1.22 s on a formula simplification. DAG size of input: 245 DAG size of output: 122 [2018-06-18 16:37:46,479 WARN ]: Spent 1.18 s on a formula simplification. DAG size of input: 212 DAG size of output: 119 [2018-06-18 16:37:48,207 WARN ]: Spent 1.56 s on a formula simplification. DAG size of input: 201 DAG size of output: 130 [2018-06-18 16:37:50,007 WARN ]: Spent 1.71 s on a formula simplification. DAG size of input: 200 DAG size of output: 137 [2018-06-18 16:37:50,069 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:37:50,069 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-18 16:37:50,069 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-18 16:37:50,069 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-18 16:37:50,070 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:37:50,070 INFO ]: With dead ends: 21 [2018-06-18 16:37:50,070 INFO ]: Without dead ends: 21 [2018-06-18 16:37:50,071 INFO ]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2018-06-18 16:37:50,071 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-18 16:37:50,074 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-18 16:37:50,074 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-18 16:37:50,075 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-18 16:37:50,075 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 21 [2018-06-18 16:37:50,075 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:37:50,075 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-18 16:37:50,075 INFO ]: Interpolant automaton has 17 states. [2018-06-18 16:37:50,075 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-18 16:37:50,076 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-18 16:37:50,076 INFO ]: Found error trace [2018-06-18 16:37:50,076 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:37:50,076 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:37:50,076 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 4 times [2018-06-18 16:37:50,076 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:37:50,076 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:37:50,077 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:37:50,077 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 16:37:50,077 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:37:50,118 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:37:50,119 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:37:50,520 WARN ]: Spent 205.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2018-06-18 16:37:50,591 INFO ]: Checked inductivity of 55 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-18 16:37:50,591 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:37:50,591 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 [2018-06-18 16:37:50,598 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-18 16:37:50,689 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-18 16:37:50,689 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:37:50,693 INFO ]: Computing forward predicates... [2018-06-18 16:37:50,809 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 16:37:50,841 WARN ]: expecting exponential blowup for input size 11 [2018-06-18 16:37:52,344 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:37:52,352 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:37:52,910 INFO ]: Checked inductivity of 55 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-06-18 16:37:52,930 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:37:52,930 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2018-06-18 16:37:52,931 INFO ]: Interpolant automaton has 11 states [2018-06-18 16:37:52,931 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-18 16:37:52,931 INFO ]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-06-18 16:37:52,931 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 11 states. [2018-06-18 16:37:53,083 WARN ]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-06-18 16:37:53,149 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:37:53,149 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-18 16:37:53,150 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 16:37:53,150 INFO ]: Start accepts. Automaton has 11 states. Word has length 29 [2018-06-18 16:37:53,150 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:37:53,150 INFO ]: With dead ends: 17 [2018-06-18 16:37:53,150 INFO ]: Without dead ends: 0 [2018-06-18 16:37:53,151 INFO ]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-06-18 16:37:53,151 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-18 16:37:53,151 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-18 16:37:53,151 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-18 16:37:53,151 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-18 16:37:53,151 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2018-06-18 16:37:53,151 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:37:53,151 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-18 16:37:53,151 INFO ]: Interpolant automaton has 11 states. [2018-06-18 16:37:53,151 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-18 16:37:53,151 INFO ]: Finished isEmpty. No accepting run. [2018-06-18 16:37:53,155 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 04:37:53 BoogieIcfgContainer [2018-06-18 16:37:53,155 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 16:37:53,156 INFO ]: Toolchain (without parser) took 30127.28 ms. Allocated memory was 305.1 MB in the beginning and 725.1 MB in the end (delta: 420.0 MB). Free memory was 257.5 MB in the beginning and 175.0 MB in the end (delta: 82.5 MB). Peak memory consumption was 502.5 MB. Max. memory is 3.6 GB. [2018-06-18 16:37:53,157 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 305.1 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 16:37:53,157 INFO ]: ChcToBoogie took 66.23 ms. Allocated memory is still 305.1 MB. Free memory was 257.5 MB in the beginning and 254.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-18 16:37:53,157 INFO ]: Boogie Preprocessor took 57.87 ms. Allocated memory is still 305.1 MB. Free memory was 254.6 MB in the beginning and 253.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-18 16:37:53,158 INFO ]: RCFGBuilder took 302.56 ms. Allocated memory is still 305.1 MB. Free memory was 253.6 MB in the beginning and 241.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-18 16:37:53,158 INFO ]: TraceAbstraction took 29681.49 ms. Allocated memory was 305.1 MB in the beginning and 725.1 MB in the end (delta: 420.0 MB). Free memory was 241.6 MB in the beginning and 175.0 MB in the end (delta: 66.5 MB). Peak memory consumption was 486.5 MB. Max. memory is 3.6 GB. [2018-06-18 16:37:53,161 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 305.1 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 66.23 ms. Allocated memory is still 305.1 MB. Free memory was 257.5 MB in the beginning and 254.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 57.87 ms. Allocated memory is still 305.1 MB. Free memory was 254.6 MB in the beginning and 253.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 302.56 ms. Allocated memory is still 305.1 MB. Free memory was 253.6 MB in the beginning and 241.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 29681.49 ms. Allocated memory was 305.1 MB in the beginning and 725.1 MB in the end (delta: 420.0 MB). Free memory was 241.6 MB in the beginning and 175.0 MB in the end (delta: 66.5 MB). Peak memory consumption was 486.5 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, 29.6s OverallTime, 5 OverallIterations, 6 TraceHistogramMax, 11.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 55 SDslu, 217 SDs, 0 SdLazy, 171 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 22.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 17.2s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 74100 SizeOfPredicates, 115 NumberOfNonLiveVariables, 1211 ConjunctsInSsa, 200 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 102/178 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/speed2.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_16-37-53-171.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/speed2.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_16-37-53-171.csv Received shutdown request...