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_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/swimmingpool_4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 09:44:57,594 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 09:44:57,596 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 09:44:57,610 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 09:44:57,610 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 09:44:57,613 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 09:44:57,614 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 09:44:57,616 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 09:44:57,617 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 09:44:57,618 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 09:44:57,618 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 09:44:57,620 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 09:44:57,620 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 09:44:57,621 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 09:44:57,622 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 09:44:57,625 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 09:44:57,626 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 09:44:57,635 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 09:44:57,637 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 09:44:57,638 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 09:44:57,639 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 09:44:57,641 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 09:44:57,645 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 09:44:57,645 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 09:44:57,646 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 09:44:57,647 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 09:44:57,648 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 09:44:57,648 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 09:44:57,649 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 09:44:57,649 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 09:44:57,652 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 09:44:57,653 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 09:44:57,653 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 09:44:57,654 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 09:44:57,655 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 09:44:57,655 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 09:44:57,676 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 09:44:57,676 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 09:44:57,677 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 09:44:57,677 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 09:44:57,678 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 09:44:57,679 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 09:44:57,679 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 09:44:57,679 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 09:44:57,679 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:44:57,679 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 09:44:57,680 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 09:44:57,680 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 09:44:57,680 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 09:44:57,680 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 09:44:57,680 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 09:44:57,680 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 09:44:57,681 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 09:44:57,685 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 09:44:57,685 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 09:44:57,730 INFO ]: Repository-Root is: /tmp [2018-06-22 09:44:57,746 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 09:44:57,751 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 09:44:57,753 INFO ]: Initializing SmtParser... [2018-06-22 09:44:57,753 INFO ]: SmtParser initialized [2018-06-22 09:44:57,754 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/swimmingpool_4.smt2 [2018-06-22 09:44:57,755 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 09:44:57,836 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/swimmingpool_4.smt2 unknown [2018-06-22 09:44:58,343 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/swimmingpool_4.smt2 [2018-06-22 09:44:58,355 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 09:44:58,366 INFO ]: Walking toolchain with 4 elements. [2018-06-22 09:44:58,367 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 09:44:58,367 INFO ]: Initializing ChcToBoogie... [2018-06-22 09:44:58,367 INFO ]: ChcToBoogie initialized [2018-06-22 09:44:58,370 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:44:58" (1/1) ... [2018-06-22 09:44:58,475 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:44:58 Unit [2018-06-22 09:44:58,475 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 09:44:58,476 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 09:44:58,476 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 09:44:58,476 INFO ]: Boogie Preprocessor initialized [2018-06-22 09:44:58,491 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:44:58" (1/1) ... [2018-06-22 09:44:58,491 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:44:58" (1/1) ... [2018-06-22 09:44:58,501 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:44:58" (1/1) ... [2018-06-22 09:44:58,501 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:44:58" (1/1) ... [2018-06-22 09:44:58,519 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:44:58" (1/1) ... [2018-06-22 09:44:58,521 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:44:58" (1/1) ... [2018-06-22 09:44:58,525 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:44:58" (1/1) ... [2018-06-22 09:44:58,530 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 09:44:58,530 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 09:44:58,530 INFO ]: Initializing RCFGBuilder... [2018-06-22 09:44:58,530 INFO ]: RCFGBuilder initialized [2018-06-22 09:44:58,531 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:44:58" (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 09:44:58,546 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 09:44:58,546 INFO ]: Found specification of procedure gotoProc [2018-06-22 09:44:58,546 INFO ]: Found implementation of procedure gotoProc [2018-06-22 09:44:58,546 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 09:44:58,546 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 09:44:58,546 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 09:44:59,022 INFO ]: Using library mode [2018-06-22 09:44:59,022 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:44:59 BoogieIcfgContainer [2018-06-22 09:44:59,022 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 09:44:59,024 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 09:44:59,024 INFO ]: Initializing TraceAbstraction... [2018-06-22 09:44:59,031 INFO ]: TraceAbstraction initialized [2018-06-22 09:44:59,032 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:44:58" (1/3) ... [2018-06-22 09:44:59,032 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7369cdf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 09:44:59, skipping insertion in model container [2018-06-22 09:44:59,032 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:44:58" (2/3) ... [2018-06-22 09:44:59,033 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7369cdf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 09:44:59, skipping insertion in model container [2018-06-22 09:44:59,033 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:44:59" (3/3) ... [2018-06-22 09:44:59,035 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 09:44:59,045 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 09:44:59,055 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 09:44:59,122 INFO ]: Using default assertion order modulation [2018-06-22 09:44:59,123 INFO ]: Interprodecural is true [2018-06-22 09:44:59,123 INFO ]: Hoare is false [2018-06-22 09:44:59,123 INFO ]: Compute interpolants for FPandBP [2018-06-22 09:44:59,123 INFO ]: Backedges is TWOTRACK [2018-06-22 09:44:59,123 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 09:44:59,123 INFO ]: Difference is false [2018-06-22 09:44:59,123 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 09:44:59,123 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 09:44:59,143 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 09:44:59,158 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 09:44:59,158 INFO ]: Found error trace [2018-06-22 09:44:59,159 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:44:59,159 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:44:59,165 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 09:44:59,168 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:44:59,168 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:44:59,219 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:44:59,219 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:44:59,219 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:44:59,387 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:44:59,591 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:44:59,594 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 09:44:59,594 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 09:44:59,596 INFO ]: Interpolant automaton has 3 states [2018-06-22 09:44:59,612 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 09:44:59,613 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:44:59,616 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 09:44:59,704 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:44:59,704 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 09:44:59,705 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 09:44:59,706 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 09:44:59,707 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:44:59,716 INFO ]: With dead ends: 9 [2018-06-22 09:44:59,716 INFO ]: Without dead ends: 9 [2018-06-22 09:44:59,720 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:44:59,739 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 09:44:59,766 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 09:44:59,769 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 09:44:59,770 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 09:44:59,771 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 09:44:59,771 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:44:59,771 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 09:44:59,771 INFO ]: Interpolant automaton has 3 states. [2018-06-22 09:44:59,771 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 09:44:59,771 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 09:44:59,771 INFO ]: Found error trace [2018-06-22 09:44:59,771 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:44:59,772 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:44:59,772 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 09:44:59,772 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:44:59,772 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:44:59,773 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:44:59,773 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:44:59,773 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:44:59,925 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:45:00,255 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:45:00,255 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:45:00,255 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) [2018-06-22 09:45:00,269 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 09:45:00,491 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:45:00,507 INFO ]: Computing forward predicates... [2018-06-22 09:45:00,632 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 09:45:00,640 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 09:45:01,720 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:45:01,743 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:45:01,743 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 09:45:01,744 INFO ]: Interpolant automaton has 5 states [2018-06-22 09:45:01,744 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 09:45:01,744 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 09:45:01,744 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 09:45:01,828 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:45:01,828 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 09:45:01,869 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 09:45:01,869 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 09:45:01,869 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:45:01,869 INFO ]: With dead ends: 10 [2018-06-22 09:45:01,869 INFO ]: Without dead ends: 10 [2018-06-22 09:45:01,870 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 09:45:01,871 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 09:45:01,872 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 09:45:01,872 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 09:45:01,872 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 09:45:01,872 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 09:45:01,872 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:45:01,872 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 09:45:01,872 INFO ]: Interpolant automaton has 5 states. [2018-06-22 09:45:01,872 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 09:45:01,873 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 09:45:01,873 INFO ]: Found error trace [2018-06-22 09:45:01,873 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:45:01,873 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:45:01,874 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 09:45:01,874 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:45:01,874 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:45:01,875 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:45:01,875 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:45:01,875 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:45:01,983 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:45:02,237 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:45:02,238 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:45:02,238 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 09:45:02,247 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 09:45:02,465 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 09:45:02,465 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:45:02,475 INFO ]: Computing forward predicates... [2018-06-22 09:45:02,620 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 09:45:02,624 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 09:45:02,794 WARN ]: Simplifying disjunction of 12672 conjuctions. This might take some time... [2018-06-22 09:45:30,022 INFO ]: Simplified to disjunction of 12672 conjuctions. [2018-06-22 09:45:30,118 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 09:45:30,121 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 09:45:30,761 WARN ]: Simplifying disjunction of 76032 conjuctions. This might take some time... Received shutdown request... [2018-06-22 09:46:18,940 INFO ]: Timeout while computing interpolants [2018-06-22 09:46:19,140 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 09:46:19,141 WARN ]: Verification canceled [2018-06-22 09:46:19,145 WARN ]: Timeout [2018-06-22 09:46:19,147 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 09:46:19 BoogieIcfgContainer [2018-06-22 09:46:19,147 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 09:46:19,148 INFO ]: Toolchain (without parser) took 80792.12 ms. Allocated memory was 309.3 MB in the beginning and 446.2 MB in the end (delta: 136.8 MB). Free memory was 240.8 MB in the beginning and 181.9 MB in the end (delta: 58.9 MB). Peak memory consumption was 195.7 MB. Max. memory is 3.6 GB. [2018-06-22 09:46:19,149 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 09:46:19,149 INFO ]: ChcToBoogie took 109.27 ms. Allocated memory is still 309.3 MB. Free memory was 240.8 MB in the beginning and 237.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:46:19,149 INFO ]: Boogie Preprocessor took 53.61 ms. Allocated memory is still 309.3 MB. Free memory was 237.8 MB in the beginning and 235.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:46:19,150 INFO ]: RCFGBuilder took 492.03 ms. Allocated memory is still 309.3 MB. Free memory was 235.8 MB in the beginning and 194.3 MB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 3.6 GB. [2018-06-22 09:46:19,150 INFO ]: TraceAbstraction took 80122.86 ms. Allocated memory was 309.3 MB in the beginning and 446.2 MB in the end (delta: 136.8 MB). Free memory was 194.3 MB in the beginning and 181.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 149.3 MB. Max. memory is 3.6 GB. [2018-06-22 09:46:19,153 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 109.27 ms. Allocated memory is still 309.3 MB. Free memory was 240.8 MB in the beginning and 237.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 53.61 ms. Allocated memory is still 309.3 MB. Free memory was 237.8 MB in the beginning and 235.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 492.03 ms. Allocated memory is still 309.3 MB. Free memory was 235.8 MB in the beginning and 194.3 MB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 3.6 GB. * TraceAbstraction took 80122.86 ms. Allocated memory was 309.3 MB in the beginning and 446.2 MB in the end (delta: 136.8 MB). Free memory was 194.3 MB in the beginning and 181.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 149.3 MB. 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 10 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 76032 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 80.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 20 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, 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, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 2 NumberOfNonLiveVariables, 830 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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_4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_09-46-19-163.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/swimmingpool_4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_09-46-19-163.csv Completed graceful shutdown