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/durationThm_1_e2_3_e7_336.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 14:55:31,577 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 14:55:31,579 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 14:55:31,600 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 14:55:31,601 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 14:55:31,602 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 14:55:31,604 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 14:55:31,608 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 14:55:31,610 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 14:55:31,612 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 14:55:31,613 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 14:55:31,614 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 14:55:31,615 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 14:55:31,617 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 14:55:31,617 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 14:55:31,629 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 14:55:31,631 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 14:55:31,633 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 14:55:31,635 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 14:55:31,636 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 14:55:31,637 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 14:55:31,639 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 14:55:31,640 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 14:55:31,640 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 14:55:31,641 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 14:55:31,642 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 14:55:31,648 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 14:55:31,649 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 14:55:31,650 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 14:55:31,650 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 14:55:31,651 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 14:55:31,652 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 14:55:31,652 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 14:55:31,653 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 14:55:31,653 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 14:55:31,654 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 14:55:31,678 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 14:55:31,679 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 14:55:31,680 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 14:55:31,680 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 14:55:31,681 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 14:55:31,681 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 14:55:31,682 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 14:55:31,682 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 14:55:31,682 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 14:55:31,682 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 14:55:31,682 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 14:55:31,683 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 14:55:31,683 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 14:55:31,684 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 14:55:31,684 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 14:55:31,684 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 14:55:31,684 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 14:55:31,686 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 14:55:31,686 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 14:55:31,747 INFO ]: Repository-Root is: /tmp [2018-06-18 14:55:31,764 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 14:55:31,770 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 14:55:31,771 INFO ]: Initializing SmtParser... [2018-06-18 14:55:31,772 INFO ]: SmtParser initialized [2018-06-18 14:55:31,772 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_1_e2_3_e7_336.smt2 [2018-06-18 14:55:31,773 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 14:55:31,867 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_1_e2_3_e7_336.smt2 unknown [2018-06-18 14:55:32,152 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_1_e2_3_e7_336.smt2 [2018-06-18 14:55:32,157 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 14:55:32,163 INFO ]: Walking toolchain with 4 elements. [2018-06-18 14:55:32,163 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 14:55:32,163 INFO ]: Initializing ChcToBoogie... [2018-06-18 14:55:32,164 INFO ]: ChcToBoogie initialized [2018-06-18 14:55:32,171 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 02:55:32" (1/1) ... [2018-06-18 14:55:32,227 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:32 Unit [2018-06-18 14:55:32,227 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 14:55:32,228 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 14:55:32,228 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 14:55:32,228 INFO ]: Boogie Preprocessor initialized [2018-06-18 14:55:32,254 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:32" (1/1) ... [2018-06-18 14:55:32,254 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:32" (1/1) ... [2018-06-18 14:55:32,264 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:32" (1/1) ... [2018-06-18 14:55:32,264 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:32" (1/1) ... [2018-06-18 14:55:32,269 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:32" (1/1) ... [2018-06-18 14:55:32,271 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:32" (1/1) ... [2018-06-18 14:55:32,273 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:32" (1/1) ... [2018-06-18 14:55:32,274 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 14:55:32,275 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 14:55:32,275 INFO ]: Initializing RCFGBuilder... [2018-06-18 14:55:32,275 INFO ]: RCFGBuilder initialized [2018-06-18 14:55:32,276 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:32" (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 14:55:32,291 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 14:55:32,291 INFO ]: Found specification of procedure False [2018-06-18 14:55:32,291 INFO ]: Found implementation of procedure False [2018-06-18 14:55:32,291 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 14:55:32,291 INFO ]: Found specification of procedure state [2018-06-18 14:55:32,291 INFO ]: Found implementation of procedure state [2018-06-18 14:55:32,291 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 14:55:32,291 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 14:55:32,291 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 14:55:32,610 INFO ]: Using library mode [2018-06-18 14:55:32,610 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 02:55:32 BoogieIcfgContainer [2018-06-18 14:55:32,610 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 14:55:32,612 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 14:55:32,612 INFO ]: Initializing TraceAbstraction... [2018-06-18 14:55:32,615 INFO ]: TraceAbstraction initialized [2018-06-18 14:55:32,616 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 02:55:32" (1/3) ... [2018-06-18 14:55:32,617 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25208564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 02:55:32, skipping insertion in model container [2018-06-18 14:55:32,617 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:32" (2/3) ... [2018-06-18 14:55:32,617 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25208564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 02:55:32, skipping insertion in model container [2018-06-18 14:55:32,617 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 02:55:32" (3/3) ... [2018-06-18 14:55:32,619 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 14:55:32,630 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 14:55:32,638 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 14:55:32,688 INFO ]: Using default assertion order modulation [2018-06-18 14:55:32,689 INFO ]: Interprodecural is true [2018-06-18 14:55:32,689 INFO ]: Hoare is false [2018-06-18 14:55:32,689 INFO ]: Compute interpolants for FPandBP [2018-06-18 14:55:32,689 INFO ]: Backedges is TWOTRACK [2018-06-18 14:55:32,689 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 14:55:32,689 INFO ]: Difference is false [2018-06-18 14:55:32,689 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 14:55:32,689 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 14:55:32,707 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 14:55:32,720 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 14:55:32,720 INFO ]: Found error trace [2018-06-18 14:55:32,721 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 14:55:32,722 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 14:55:32,726 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-18 14:55:32,727 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 14:55:32,728 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 14:55:32,769 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:55:32,769 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 14:55:32,769 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:55:32,827 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:55:32,834 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 14:55:32,911 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 14:55:32,914 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 14:55:32,914 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 14:55:32,915 INFO ]: Interpolant automaton has 4 states [2018-06-18 14:55:32,926 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 14:55:32,927 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 14:55:32,929 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 14:55:33,042 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 14:55:33,043 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 14:55:33,048 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 14:55:33,049 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 14:55:33,050 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 14:55:33,062 INFO ]: With dead ends: 13 [2018-06-18 14:55:33,062 INFO ]: Without dead ends: 13 [2018-06-18 14:55:33,064 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 14:55:33,079 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 14:55:33,102 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 14:55:33,103 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 14:55:33,104 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 14:55:33,106 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 14:55:33,106 INFO ]: Finished accepts. word is rejected. [2018-06-18 14:55:33,106 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 14:55:33,106 INFO ]: Interpolant automaton has 4 states. [2018-06-18 14:55:33,106 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 14:55:33,107 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 14:55:33,107 INFO ]: Found error trace [2018-06-18 14:55:33,108 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 14:55:33,108 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 14:55:33,108 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-18 14:55:33,108 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 14:55:33,108 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 14:55:33,109 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:55:33,109 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 14:55:33,109 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:55:33,153 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:55:33,154 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 14:55:33,750 WARN ]: Spent 452.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2018-06-18 14:55:33,996 WARN ]: Spent 232.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2018-06-18 14:55:34,091 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 14:55:34,091 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 14:55:34,091 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 14:55:34,099 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 14:55:34,168 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:55:34,181 INFO ]: Computing forward predicates... [2018-06-18 14:55:34,340 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 14:55:35,970 WARN ]: Spent 518.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 20 [2018-06-18 14:55:36,066 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 14:55:36,091 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 14:55:36,091 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-18 14:55:36,091 INFO ]: Interpolant automaton has 8 states [2018-06-18 14:55:36,092 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-18 14:55:36,092 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-18 14:55:36,092 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-18 14:55:36,323 WARN ]: Spent 156.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2018-06-18 14:55:36,529 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 14:55:36,529 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 14:55:36,530 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 14:55:36,530 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-18 14:55:36,530 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 14:55:36,531 INFO ]: With dead ends: 15 [2018-06-18 14:55:36,531 INFO ]: Without dead ends: 15 [2018-06-18 14:55:36,532 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-06-18 14:55:36,532 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 14:55:36,534 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 14:55:36,534 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 14:55:36,535 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 14:55:36,535 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 14:55:36,535 INFO ]: Finished accepts. word is rejected. [2018-06-18 14:55:36,535 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 14:55:36,535 INFO ]: Interpolant automaton has 8 states. [2018-06-18 14:55:36,535 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 14:55:36,536 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 14:55:36,536 INFO ]: Found error trace [2018-06-18 14:55:36,536 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 14:55:36,536 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 14:55:36,536 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-18 14:55:36,536 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 14:55:36,536 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 14:55:36,537 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:55:36,537 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 14:55:36,537 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:55:36,581 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:55:36,582 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 14:55:36,940 WARN ]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2018-06-18 14:55:37,069 WARN ]: Spent 120.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 19 [2018-06-18 14:55:37,238 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 14:55:37,238 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 14:55:37,238 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) [2018-06-18 14:55:37,254 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 14:55:37,320 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 14:55:37,320 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:55:37,325 INFO ]: Computing forward predicates... [2018-06-18 14:55:37,710 WARN ]: Spent 118.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2018-06-18 14:55:37,851 WARN ]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-06-18 14:55:38,165 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 14:55:38,189 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 14:55:38,189 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-18 14:55:38,189 INFO ]: Interpolant automaton has 12 states [2018-06-18 14:55:38,189 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-18 14:55:38,190 INFO ]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-06-18 14:55:38,191 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-18 14:55:38,530 WARN ]: Spent 284.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2018-06-18 14:55:38,689 WARN ]: Spent 128.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2018-06-18 14:55:39,180 WARN ]: Spent 437.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 63 [2018-06-18 14:55:39,447 WARN ]: Spent 238.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 72 [2018-06-18 14:55:39,501 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 14:55:39,502 INFO ]: Finished difference Result 11 states and 12 transitions. [2018-06-18 14:55:39,502 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-18 14:55:39,502 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-18 14:55:39,502 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 14:55:39,502 INFO ]: With dead ends: 11 [2018-06-18 14:55:39,503 INFO ]: Without dead ends: 0 [2018-06-18 14:55:39,503 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-06-18 14:55:39,503 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-18 14:55:39,503 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-18 14:55:39,503 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-18 14:55:39,503 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-18 14:55:39,503 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-06-18 14:55:39,503 INFO ]: Finished accepts. word is rejected. [2018-06-18 14:55:39,503 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-18 14:55:39,503 INFO ]: Interpolant automaton has 12 states. [2018-06-18 14:55:39,503 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-18 14:55:39,503 INFO ]: Finished isEmpty. No accepting run. [2018-06-18 14:55:39,509 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 02:55:39 BoogieIcfgContainer [2018-06-18 14:55:39,509 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 14:55:39,510 INFO ]: Toolchain (without parser) took 7352.51 ms. Allocated memory was 310.4 MB in the beginning and 384.8 MB in the end (delta: 74.4 MB). Free memory was 263.8 MB in the beginning and 294.7 MB in the end (delta: -30.9 MB). Peak memory consumption was 43.5 MB. Max. memory is 3.6 GB. [2018-06-18 14:55:39,511 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 310.4 MB. Free memory is still 275.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 14:55:39,511 INFO ]: ChcToBoogie took 64.11 ms. Allocated memory is still 310.4 MB. Free memory was 262.8 MB in the beginning and 260.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-18 14:55:39,512 INFO ]: Boogie Preprocessor took 46.53 ms. Allocated memory is still 310.4 MB. Free memory was 260.8 MB in the beginning and 259.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. [2018-06-18 14:55:39,512 INFO ]: RCFGBuilder took 335.11 ms. Allocated memory is still 310.4 MB. Free memory was 259.8 MB in the beginning and 248.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 3.6 GB. [2018-06-18 14:55:39,513 INFO ]: TraceAbstraction took 6897.26 ms. Allocated memory was 310.4 MB in the beginning and 384.8 MB in the end (delta: 74.4 MB). Free memory was 248.7 MB in the beginning and 294.7 MB in the end (delta: -46.0 MB). Peak memory consumption was 28.5 MB. Max. memory is 3.6 GB. [2018-06-18 14:55:39,517 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 310.4 MB. Free memory is still 275.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 64.11 ms. Allocated memory is still 310.4 MB. Free memory was 262.8 MB in the beginning and 260.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 46.53 ms. Allocated memory is still 310.4 MB. Free memory was 260.8 MB in the beginning and 259.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 335.11 ms. Allocated memory is still 310.4 MB. Free memory was 259.8 MB in the beginning and 248.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 6897.26 ms. Allocated memory was 310.4 MB in the beginning and 384.8 MB in the end (delta: 74.4 MB). Free memory was 248.7 MB in the beginning and 294.7 MB in the end (delta: -46.0 MB). Peak memory consumption was 28.5 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, 6.8s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 15 SDslu, 78 SDs, 0 SdLazy, 70 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 10944 SizeOfPredicates, 74 NumberOfNonLiveVariables, 410 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 8/26 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/durationThm_1_e2_3_e7_336.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_14-55-39-528.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/durationThm_1_e2_3_e7_336.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_14-55-39-528.csv Received shutdown request...