java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/swimmingpool_5.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:56:35,792 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:56:35,793 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:56:35,803 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:56:35,804 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:56:35,805 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:56:35,806 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:56:35,807 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:56:35,809 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:56:35,810 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:56:35,810 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:56:35,811 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:56:35,811 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:56:35,814 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:56:35,815 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:56:35,815 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:56:35,817 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:56:35,819 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:56:35,820 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:56:35,821 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:56:35,823 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:56:35,825 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:56:35,825 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:56:35,826 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:56:35,826 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:56:35,827 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:56:35,828 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:56:35,829 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:56:35,830 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:56:35,830 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:56:35,831 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:56:35,832 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:56:35,832 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:56:35,833 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:56:35,834 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:56:35,834 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 19:56:35,849 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:56:35,849 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:56:35,849 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:56:35,850 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:56:35,854 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:56:35,854 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:56:35,854 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:56:35,855 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:56:35,855 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:56:35,855 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:56:35,855 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:56:35,855 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:56:35,856 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:56:35,856 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:56:35,856 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:56:35,856 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:56:35,856 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:56:35,856 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:56:35,857 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:56:35,858 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:56:35,858 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:56:35,902 INFO ]: Repository-Root is: /tmp [2018-06-22 19:56:35,917 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:56:35,923 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:56:35,924 INFO ]: Initializing SmtParser... [2018-06-22 19:56:35,924 INFO ]: SmtParser initialized [2018-06-22 19:56:35,925 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/swimmingpool_5.smt2 [2018-06-22 19:56:35,926 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 19:56:36,021 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/swimmingpool_5.smt2 unknown [2018-06-22 19:56:36,591 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/swimmingpool_5.smt2 [2018-06-22 19:56:36,596 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:56:36,601 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:56:36,601 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:56:36,601 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:56:36,602 INFO ]: ChcToBoogie initialized [2018-06-22 19:56:36,604 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:56:36" (1/1) ... [2018-06-22 19:56:36,686 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:56:36 Unit [2018-06-22 19:56:36,686 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:56:36,687 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:56:36,687 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:56:36,687 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:56:36,705 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:56:36" (1/1) ... [2018-06-22 19:56:36,705 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:56:36" (1/1) ... [2018-06-22 19:56:36,714 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:56:36" (1/1) ... [2018-06-22 19:56:36,714 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:56:36" (1/1) ... [2018-06-22 19:56:36,727 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:56:36" (1/1) ... [2018-06-22 19:56:36,728 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:56:36" (1/1) ... [2018-06-22 19:56:36,731 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:56:36" (1/1) ... [2018-06-22 19:56:36,735 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:56:36,736 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:56:36,736 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:56:36,736 INFO ]: RCFGBuilder initialized [2018-06-22 19:56:36,737 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:56:36" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 19:56:36,757 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:56:36,757 INFO ]: Found specification of procedure False [2018-06-22 19:56:36,758 INFO ]: Found implementation of procedure False [2018-06-22 19:56:36,758 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:56:36,758 INFO ]: Found specification of procedure state [2018-06-22 19:56:36,758 INFO ]: Found implementation of procedure state [2018-06-22 19:56:36,758 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:56:36,758 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:56:36,758 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:56:37,136 INFO ]: Using library mode [2018-06-22 19:56:37,137 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:56:37 BoogieIcfgContainer [2018-06-22 19:56:37,137 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:56:37,139 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:56:37,140 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:56:37,142 INFO ]: TraceAbstraction initialized [2018-06-22 19:56:37,143 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:56:36" (1/3) ... [2018-06-22 19:56:37,145 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41822670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:56:37, skipping insertion in model container [2018-06-22 19:56:37,145 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:56:36" (2/3) ... [2018-06-22 19:56:37,145 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41822670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:56:37, skipping insertion in model container [2018-06-22 19:56:37,145 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:56:37" (3/3) ... [2018-06-22 19:56:37,147 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:56:37,156 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:56:37,166 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:56:37,210 INFO ]: Using default assertion order modulation [2018-06-22 19:56:37,210 INFO ]: Interprodecural is true [2018-06-22 19:56:37,210 INFO ]: Hoare is false [2018-06-22 19:56:37,210 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:56:37,210 INFO ]: Backedges is TWOTRACK [2018-06-22 19:56:37,210 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:56:37,211 INFO ]: Difference is false [2018-06-22 19:56:37,211 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:56:37,211 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:56:37,233 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:56:37,244 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:56:37,244 INFO ]: Found error trace [2018-06-22 19:56:37,246 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:56:37,246 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:56:37,252 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 19:56:37,254 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:56:37,254 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:56:37,287 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:56:37,287 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:56:37,287 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:56:37,406 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:56:37,751 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:56:37,754 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:56:37,754 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:56:37,755 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:56:37,769 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:56:37,769 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:56:37,771 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:56:37,879 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:56:37,879 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:56:37,880 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:56:37,880 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:56:37,881 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:56:37,889 INFO ]: With dead ends: 13 [2018-06-22 19:56:37,889 INFO ]: Without dead ends: 13 [2018-06-22 19:56:37,890 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:56:37,903 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:56:37,934 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:56:37,935 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:56:37,936 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:56:37,937 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:56:37,937 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:56:37,938 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:56:37,938 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:56:37,938 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:56:37,939 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:56:37,939 INFO ]: Found error trace [2018-06-22 19:56:37,939 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:56:37,939 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:56:37,939 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 19:56:37,939 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:56:37,939 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:56:37,940 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:56:37,940 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:56:37,940 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:56:38,106 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:56:39,386 WARN ]: Spent 1.03 s on a formula simplification. DAG size of input: 84 DAG size of output: 52 [2018-06-22 19:56:39,465 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:56:39,465 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:56:39,465 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:56:39,473 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:56:39,604 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:56:39,619 INFO ]: Computing forward predicates... [2018-06-22 19:56:39,873 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:56:39,896 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:56:39,899 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:56:40,349 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:56:40,373 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:56:40,373 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:56:40,374 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:56:40,374 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:56:40,374 INFO ]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:56:40,375 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:56:40,584 WARN ]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-06-22 19:56:40,706 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:56:40,706 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:56:40,707 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:56:40,707 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:56:40,707 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:56:40,708 INFO ]: With dead ends: 15 [2018-06-22 19:56:40,708 INFO ]: Without dead ends: 15 [2018-06-22 19:56:40,709 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 19:56:40,709 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:56:40,712 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:56:40,712 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:56:40,712 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:56:40,712 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:56:40,712 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:56:40,712 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:56:40,712 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:56:40,712 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:56:40,713 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:56:40,713 INFO ]: Found error trace [2018-06-22 19:56:40,713 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:56:40,713 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:56:40,713 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 19:56:40,713 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:56:40,713 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:56:40,714 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:56:40,714 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:56:40,714 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:56:40,807 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:56:41,714 WARN ]: Spent 425.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2018-06-22 19:56:41,841 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:56:41,841 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:56:41,841 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:56:41,856 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:56:42,057 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:56:42,057 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:56:42,066 INFO ]: Computing forward predicates... [2018-06-22 19:56:51,307 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:56:51,555 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:56:51,872 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:56:51,911 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:56:52,193 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:56:52,241 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:56:52,242 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 19:56:52,788 WARN ]: Simplifying disjunction of 42768 conjuctions. This might take some time... Received shutdown request... [2018-06-22 19:57:43,254 INFO ]: Timeout while computing interpolants [2018-06-22 19:57:43,455 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:57:43,455 WARN ]: Verification canceled [2018-06-22 19:57:43,458 WARN ]: Timeout [2018-06-22 19:57:43,459 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:57:43 BoogieIcfgContainer [2018-06-22 19:57:43,459 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:57:43,460 INFO ]: Toolchain (without parser) took 66863.18 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 238.1 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 19:57:43,462 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 270.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:57:43,463 INFO ]: ChcToBoogie took 84.68 ms. Allocated memory is still 306.7 MB. Free memory was 238.1 MB in the beginning and 235.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:57:43,463 INFO ]: Boogie Preprocessor took 48.92 ms. Allocated memory is still 306.7 MB. Free memory was 235.1 MB in the beginning and 233.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:57:43,463 INFO ]: RCFGBuilder took 400.89 ms. Allocated memory is still 306.7 MB. Free memory was 233.2 MB in the beginning and 202.1 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 3.6 GB. [2018-06-22 19:57:43,466 INFO ]: TraceAbstraction took 66319.28 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 202.1 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 19:57:43,469 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 306.7 MB. Free memory is still 270.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 84.68 ms. Allocated memory is still 306.7 MB. Free memory was 238.1 MB in the beginning and 235.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 48.92 ms. Allocated memory is still 306.7 MB. Free memory was 235.1 MB in the beginning and 233.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 400.89 ms. Allocated memory is still 306.7 MB. Free memory was 233.2 MB in the beginning and 202.1 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 66319.28 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 202.1 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 42768 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 66.2s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 8 SDslu, 45 SDs, 0 SdLazy, 28 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.6s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1728 SizeOfPredicates, 19 NumberOfNonLiveVariables, 674 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/swimmingpool_5.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-57-43-485.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/swimmingpool_5.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-57-43-485.csv Completed graceful shutdown