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/hysteresis_all.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 15:46:58,866 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 15:46:58,868 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 15:46:58,885 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 15:46:58,885 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 15:46:58,886 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 15:46:58,890 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 15:46:58,893 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 15:46:58,894 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 15:46:58,897 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 15:46:58,898 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 15:46:58,898 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 15:46:58,899 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 15:46:58,904 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 15:46:58,904 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 15:46:58,905 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 15:46:58,918 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 15:46:58,921 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 15:46:58,922 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 15:46:58,923 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 15:46:58,924 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 15:46:58,926 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 15:46:58,927 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 15:46:58,927 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 15:46:58,931 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 15:46:58,932 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 15:46:58,933 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 15:46:58,934 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 15:46:58,939 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 15:46:58,939 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 15:46:58,940 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 15:46:58,941 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 15:46:58,941 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 15:46:58,942 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 15:46:58,943 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 15:46:58,946 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 15:46:58,970 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 15:46:58,970 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 15:46:58,970 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 15:46:58,970 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 15:46:58,972 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 15:46:58,972 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 15:46:58,972 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 15:46:58,972 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 15:46:58,973 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 15:46:58,975 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 15:46:58,976 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 15:46:58,976 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 15:46:58,976 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 15:46:58,976 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 15:46:58,977 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 15:46:58,977 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 15:46:58,977 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 15:46:58,978 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 15:46:58,980 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 15:46:59,031 INFO ]: Repository-Root is: /tmp [2018-06-18 15:46:59,049 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 15:46:59,053 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 15:46:59,054 INFO ]: Initializing SmtParser... [2018-06-18 15:46:59,055 INFO ]: SmtParser initialized [2018-06-18 15:46:59,055 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_all.smt2 [2018-06-18 15:46:59,058 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 15:46:59,149 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_all.smt2 unknown [2018-06-18 15:46:59,460 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_all.smt2 [2018-06-18 15:46:59,465 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 15:46:59,471 INFO ]: Walking toolchain with 4 elements. [2018-06-18 15:46:59,472 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 15:46:59,472 INFO ]: Initializing ChcToBoogie... [2018-06-18 15:46:59,472 INFO ]: ChcToBoogie initialized [2018-06-18 15:46:59,479 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 03:46:59" (1/1) ... [2018-06-18 15:46:59,528 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:59 Unit [2018-06-18 15:46:59,528 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 15:46:59,529 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 15:46:59,529 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 15:46:59,529 INFO ]: Boogie Preprocessor initialized [2018-06-18 15:46:59,552 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:59" (1/1) ... [2018-06-18 15:46:59,553 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:59" (1/1) ... [2018-06-18 15:46:59,563 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:59" (1/1) ... [2018-06-18 15:46:59,564 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:59" (1/1) ... [2018-06-18 15:46:59,569 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:59" (1/1) ... [2018-06-18 15:46:59,571 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:59" (1/1) ... [2018-06-18 15:46:59,583 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:59" (1/1) ... [2018-06-18 15:46:59,585 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 15:46:59,586 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 15:46:59,586 INFO ]: Initializing RCFGBuilder... [2018-06-18 15:46:59,586 INFO ]: RCFGBuilder initialized [2018-06-18 15:46:59,587 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:59" (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 15:46:59,618 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 15:46:59,618 INFO ]: Found specification of procedure False [2018-06-18 15:46:59,618 INFO ]: Found implementation of procedure False [2018-06-18 15:46:59,618 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 15:46:59,618 INFO ]: Found specification of procedure state [2018-06-18 15:46:59,618 INFO ]: Found implementation of procedure state [2018-06-18 15:46:59,618 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 15:46:59,618 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 15:46:59,618 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 15:46:59,925 INFO ]: Using library mode [2018-06-18 15:46:59,925 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 03:46:59 BoogieIcfgContainer [2018-06-18 15:46:59,925 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 15:46:59,927 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 15:46:59,927 INFO ]: Initializing TraceAbstraction... [2018-06-18 15:46:59,934 INFO ]: TraceAbstraction initialized [2018-06-18 15:46:59,934 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 03:46:59" (1/3) ... [2018-06-18 15:46:59,935 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726394e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 03:46:59, skipping insertion in model container [2018-06-18 15:46:59,935 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:59" (2/3) ... [2018-06-18 15:46:59,935 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726394e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 03:46:59, skipping insertion in model container [2018-06-18 15:46:59,935 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 03:46:59" (3/3) ... [2018-06-18 15:46:59,937 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 15:46:59,948 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 15:46:59,960 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 15:47:00,011 INFO ]: Using default assertion order modulation [2018-06-18 15:47:00,012 INFO ]: Interprodecural is true [2018-06-18 15:47:00,012 INFO ]: Hoare is false [2018-06-18 15:47:00,012 INFO ]: Compute interpolants for FPandBP [2018-06-18 15:47:00,012 INFO ]: Backedges is TWOTRACK [2018-06-18 15:47:00,012 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 15:47:00,012 INFO ]: Difference is false [2018-06-18 15:47:00,012 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 15:47:00,012 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 15:47:00,031 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 15:47:00,052 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 15:47:00,052 INFO ]: Found error trace [2018-06-18 15:47:00,054 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 15:47:00,054 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 15:47:00,059 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-18 15:47:00,061 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 15:47:00,062 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 15:47:00,108 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:47:00,108 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 15:47:00,108 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:47:00,174 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:47:00,183 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 15:47:00,332 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 15:47:00,336 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 15:47:00,336 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 15:47:00,338 INFO ]: Interpolant automaton has 4 states [2018-06-18 15:47:00,350 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 15:47:00,350 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 15:47:00,352 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 15:47:00,471 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 15:47:00,471 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 15:47:00,472 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 15:47:00,474 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 15:47:00,474 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 15:47:00,491 INFO ]: With dead ends: 13 [2018-06-18 15:47:00,491 INFO ]: Without dead ends: 13 [2018-06-18 15:47:00,492 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 15:47:00,505 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 15:47:00,529 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 15:47:00,530 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 15:47:00,534 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 15:47:00,536 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 15:47:00,536 INFO ]: Finished accepts. word is rejected. [2018-06-18 15:47:00,536 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 15:47:00,536 INFO ]: Interpolant automaton has 4 states. [2018-06-18 15:47:00,536 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 15:47:00,537 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 15:47:00,537 INFO ]: Found error trace [2018-06-18 15:47:00,537 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 15:47:00,537 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 15:47:00,537 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-18 15:47:00,537 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 15:47:00,537 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 15:47:00,538 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:47:00,538 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 15:47:00,538 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:47:00,576 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:47:00,577 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 15:47:00,841 WARN ]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-18 15:47:01,033 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 15:47:01,034 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 15:47:01,034 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 15:47:01,043 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 15:47:01,085 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:47:01,092 INFO ]: Computing forward predicates... [2018-06-18 15:47:01,558 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,583 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,603 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,621 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,637 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,659 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,681 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,701 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,706 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,710 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,724 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,736 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,740 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,742 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,746 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,750 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,753 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,767 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,783 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,794 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,810 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:01,825 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:47:02,863 WARN ]: Spent 371.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 4 [2018-06-18 15:47:02,995 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 15:47:03,019 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 15:47:03,019 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-18 15:47:03,019 INFO ]: Interpolant automaton has 8 states [2018-06-18 15:47:03,019 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-18 15:47:03,020 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-18 15:47:03,020 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-18 15:47:03,398 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 15:47:03,399 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 15:47:03,399 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 15:47:03,399 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-18 15:47:03,400 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 15:47:03,400 INFO ]: With dead ends: 15 [2018-06-18 15:47:03,400 INFO ]: Without dead ends: 15 [2018-06-18 15:47:03,401 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-18 15:47:03,401 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 15:47:03,404 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 15:47:03,404 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 15:47:03,404 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 15:47:03,404 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 15:47:03,404 INFO ]: Finished accepts. word is rejected. [2018-06-18 15:47:03,404 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 15:47:03,404 INFO ]: Interpolant automaton has 8 states. [2018-06-18 15:47:03,404 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 15:47:03,405 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 15:47:03,405 INFO ]: Found error trace [2018-06-18 15:47:03,405 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 15:47:03,405 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 15:47:03,405 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-18 15:47:03,405 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 15:47:03,405 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 15:47:03,406 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:47:03,406 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 15:47:03,406 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:47:03,548 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:47:03,549 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 15:47:04,387 WARN ]: Spent 450.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2018-06-18 15:47:04,916 WARN ]: Spent 503.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 130 [2018-06-18 15:47:05,326 WARN ]: Spent 292.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 82 [2018-06-18 15:47:05,344 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 15:47:05,344 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 15:47:05,344 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 15:47:05,361 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 15:47:05,406 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 15:47:05,406 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:47:05,411 INFO ]: Computing forward predicates... [2018-06-18 15:47:05,476 WARN ]: expecting exponential blowup for input size 18 Received shutdown request... [2018-06-18 15:47:48,283 INFO ]: Timeout while computing interpolants [2018-06-18 15:47:48,484 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 15:47:48,484 WARN ]: Verification canceled [2018-06-18 15:47:48,488 WARN ]: Timeout [2018-06-18 15:47:48,489 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 03:47:48 BoogieIcfgContainer [2018-06-18 15:47:48,489 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 15:47:48,490 INFO ]: Toolchain (without parser) took 49024.52 ms. Allocated memory was 307.2 MB in the beginning and 3.6 GB in the end (delta: 3.3 GB). Free memory was 257.6 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 3.1 GB. Max. memory is 3.6 GB. [2018-06-18 15:47:48,491 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 15:47:48,491 INFO ]: ChcToBoogie took 56.39 ms. Allocated memory is still 307.2 MB. Free memory was 257.6 MB in the beginning and 255.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-18 15:47:48,491 INFO ]: Boogie Preprocessor took 56.99 ms. Allocated memory is still 307.2 MB. Free memory was 255.7 MB in the beginning and 253.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-18 15:47:48,492 INFO ]: RCFGBuilder took 339.25 ms. Allocated memory is still 307.2 MB. Free memory was 253.7 MB in the beginning and 241.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-18 15:47:48,492 INFO ]: TraceAbstraction took 48561.85 ms. Allocated memory was 307.2 MB in the beginning and 3.6 GB in the end (delta: 3.3 GB). Free memory was 241.7 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 3.1 GB. Max. memory is 3.6 GB. [2018-06-18 15:47:48,496 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 307.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 56.39 ms. Allocated memory is still 307.2 MB. Free memory was 257.6 MB in the beginning and 255.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 56.99 ms. Allocated memory is still 307.2 MB. Free memory was 255.7 MB in the beginning and 253.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 339.25 ms. Allocated memory is still 307.2 MB. Free memory was 253.7 MB in the beginning and 241.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 48561.85 ms. Allocated memory was 307.2 MB in the beginning and 3.6 GB in the end (delta: 3.3 GB). Free memory was 241.7 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 3.1 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 transforming 18 conjuction. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 48.4s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 7 SDslu, 37 SDs, 0 SdLazy, 26 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s 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, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 932 SizeOfPredicates, 18 NumberOfNonLiveVariables, 158 ConjunctsInSsa, 21 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/hysteresis_all.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_15-47-48-513.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/hysteresis_all.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_15-47-48-513.csv Completed graceful shutdown