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_3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 15:46:28,686 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 15:46:28,693 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 15:46:28,707 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 15:46:28,707 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 15:46:28,708 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 15:46:28,710 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 15:46:28,714 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 15:46:28,716 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 15:46:28,717 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 15:46:28,719 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 15:46:28,719 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 15:46:28,720 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 15:46:28,721 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 15:46:28,725 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 15:46:28,726 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 15:46:28,728 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 15:46:28,742 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 15:46:28,743 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 15:46:28,744 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 15:46:28,745 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 15:46:28,748 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 15:46:28,748 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 15:46:28,748 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 15:46:28,753 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 15:46:28,755 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 15:46:28,755 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 15:46:28,756 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 15:46:28,757 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 15:46:28,757 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 15:46:28,763 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 15:46:28,763 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 15:46:28,764 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 15:46:28,764 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 15:46:28,765 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 15:46:28,765 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 15:46:28,789 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 15:46:28,789 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 15:46:28,790 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 15:46:28,790 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 15:46:28,791 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 15:46:28,791 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 15:46:28,792 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 15:46:28,792 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 15:46:28,792 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 15:46:28,792 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 15:46:28,792 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 15:46:28,793 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 15:46:28,793 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 15:46:28,793 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 15:46:28,794 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 15:46:28,794 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 15:46:28,794 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 15:46:28,795 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 15:46:28,796 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 15:46:28,853 INFO ]: Repository-Root is: /tmp [2018-06-18 15:46:28,869 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 15:46:28,874 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 15:46:28,875 INFO ]: Initializing SmtParser... [2018-06-18 15:46:28,876 INFO ]: SmtParser initialized [2018-06-18 15:46:28,876 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_3.smt2 [2018-06-18 15:46:28,878 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 15:46:28,967 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_3.smt2 unknown [2018-06-18 15:46:29,237 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_3.smt2 [2018-06-18 15:46:29,241 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 15:46:29,247 INFO ]: Walking toolchain with 4 elements. [2018-06-18 15:46:29,248 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 15:46:29,248 INFO ]: Initializing ChcToBoogie... [2018-06-18 15:46:29,248 INFO ]: ChcToBoogie initialized [2018-06-18 15:46:29,255 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 03:46:29" (1/1) ... [2018-06-18 15:46:29,336 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:29 Unit [2018-06-18 15:46:29,337 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 15:46:29,337 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 15:46:29,337 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 15:46:29,337 INFO ]: Boogie Preprocessor initialized [2018-06-18 15:46:29,360 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:29" (1/1) ... [2018-06-18 15:46:29,360 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:29" (1/1) ... [2018-06-18 15:46:29,370 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:29" (1/1) ... [2018-06-18 15:46:29,370 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:29" (1/1) ... [2018-06-18 15:46:29,373 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:29" (1/1) ... [2018-06-18 15:46:29,387 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:29" (1/1) ... [2018-06-18 15:46:29,388 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:29" (1/1) ... [2018-06-18 15:46:29,390 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 15:46:29,390 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 15:46:29,390 INFO ]: Initializing RCFGBuilder... [2018-06-18 15:46:29,390 INFO ]: RCFGBuilder initialized [2018-06-18 15:46:29,391 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:29" (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 15:46:29,405 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 15:46:29,405 INFO ]: Found specification of procedure False [2018-06-18 15:46:29,405 INFO ]: Found implementation of procedure False [2018-06-18 15:46:29,405 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 15:46:29,405 INFO ]: Found specification of procedure state [2018-06-18 15:46:29,405 INFO ]: Found implementation of procedure state [2018-06-18 15:46:29,405 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 15:46:29,406 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 15:46:29,406 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 15:46:29,714 INFO ]: Using library mode [2018-06-18 15:46:29,714 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 03:46:29 BoogieIcfgContainer [2018-06-18 15:46:29,714 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 15:46:29,716 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 15:46:29,716 INFO ]: Initializing TraceAbstraction... [2018-06-18 15:46:29,719 INFO ]: TraceAbstraction initialized [2018-06-18 15:46:29,719 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 03:46:29" (1/3) ... [2018-06-18 15:46:29,720 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707fe4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 03:46:29, skipping insertion in model container [2018-06-18 15:46:29,720 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:46:29" (2/3) ... [2018-06-18 15:46:29,720 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707fe4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 03:46:29, skipping insertion in model container [2018-06-18 15:46:29,721 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 03:46:29" (3/3) ... [2018-06-18 15:46:29,722 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 15:46:29,732 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 15:46:29,744 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 15:46:29,795 INFO ]: Using default assertion order modulation [2018-06-18 15:46:29,796 INFO ]: Interprodecural is true [2018-06-18 15:46:29,796 INFO ]: Hoare is false [2018-06-18 15:46:29,796 INFO ]: Compute interpolants for FPandBP [2018-06-18 15:46:29,796 INFO ]: Backedges is TWOTRACK [2018-06-18 15:46:29,796 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 15:46:29,796 INFO ]: Difference is false [2018-06-18 15:46:29,796 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 15:46:29,796 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 15:46:29,814 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 15:46:29,825 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 15:46:29,825 INFO ]: Found error trace [2018-06-18 15:46:29,826 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 15:46:29,826 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 15:46:29,831 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-18 15:46:29,833 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 15:46:29,833 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 15:46:29,868 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:46:29,868 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 15:46:29,868 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:46:29,928 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:46:29,937 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 15:46:30,049 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 15:46:30,052 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 15:46:30,052 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 15:46:30,054 INFO ]: Interpolant automaton has 4 states [2018-06-18 15:46:30,064 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 15:46:30,065 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 15:46:30,067 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 15:46:30,165 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 15:46:30,166 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 15:46:30,167 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 15:46:30,168 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 15:46:30,169 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 15:46:30,182 INFO ]: With dead ends: 13 [2018-06-18 15:46:30,182 INFO ]: Without dead ends: 13 [2018-06-18 15:46:30,184 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 15:46:30,197 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 15:46:30,221 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 15:46:30,222 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 15:46:30,223 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 15:46:30,224 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 15:46:30,224 INFO ]: Finished accepts. word is rejected. [2018-06-18 15:46:30,224 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 15:46:30,224 INFO ]: Interpolant automaton has 4 states. [2018-06-18 15:46:30,225 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 15:46:30,226 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 15:46:30,226 INFO ]: Found error trace [2018-06-18 15:46:30,226 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 15:46:30,226 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 15:46:30,226 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-18 15:46:30,226 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 15:46:30,226 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 15:46:30,227 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:46:30,227 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 15:46:30,227 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:46:30,270 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:46:30,273 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 15:46:30,499 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 15:46:30,499 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 15:46:30,499 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 15:46:30,508 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 15:46:30,569 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:46:30,579 INFO ]: Computing forward predicates... [2018-06-18 15:46:30,857 WARN ]: Spent 142.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-06-18 15:46:30,957 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 15:46:30,979 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 15:46:30,979 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-18 15:46:30,980 INFO ]: Interpolant automaton has 8 states [2018-06-18 15:46:30,980 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-18 15:46:30,980 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-18 15:46:30,980 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-18 15:46:31,389 WARN ]: Spent 254.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-06-18 15:46:31,438 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 15:46:31,438 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 15:46:31,439 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 15:46:31,439 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-18 15:46:31,439 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 15:46:31,439 INFO ]: With dead ends: 15 [2018-06-18 15:46:31,439 INFO ]: Without dead ends: 15 [2018-06-18 15:46:31,440 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-18 15:46:31,440 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 15:46:31,443 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 15:46:31,443 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 15:46:31,443 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 15:46:31,444 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 15:46:31,444 INFO ]: Finished accepts. word is rejected. [2018-06-18 15:46:31,444 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 15:46:31,444 INFO ]: Interpolant automaton has 8 states. [2018-06-18 15:46:31,444 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 15:46:31,445 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 15:46:31,445 INFO ]: Found error trace [2018-06-18 15:46:31,445 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 15:46:31,445 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 15:46:31,445 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-18 15:46:31,445 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 15:46:31,445 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 15:46:31,447 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:46:31,447 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 15:46:31,447 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:46:31,493 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:46:31,494 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 15:46:31,938 WARN ]: Spent 220.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2018-06-18 15:46:32,353 WARN ]: Spent 405.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2018-06-18 15:46:32,420 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 15:46:32,421 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 15:46:32,421 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 15:46:32,429 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 15:46:32,487 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 15:46:32,487 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:46:32,494 INFO ]: Computing forward predicates... [2018-06-18 15:46:33,041 WARN ]: Spent 252.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 28 [2018-06-18 15:46:33,167 WARN ]: expecting exponential blowup for input size 10 [2018-06-18 15:46:34,218 WARN ]: Simplifying disjunction of 120960 conjuctions. This might take some time... Received shutdown request... [2018-06-18 15:47:50,753 INFO ]: Timeout while computing interpolants [2018-06-18 15:47:50,954 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 15:47:50,954 WARN ]: Verification canceled [2018-06-18 15:47:50,959 WARN ]: Timeout [2018-06-18 15:47:50,960 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 03:47:50 BoogieIcfgContainer [2018-06-18 15:47:50,960 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 15:47:50,961 INFO ]: Toolchain (without parser) took 81719.10 ms. Allocated memory was 309.3 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 261.7 MB in the beginning and 439.8 MB in the end (delta: -178.1 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-18 15:47:50,962 INFO ]: SmtParser took 0.07 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. [2018-06-18 15:47:50,962 INFO ]: ChcToBoogie took 89.14 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 258.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-18 15:47:50,963 INFO ]: Boogie Preprocessor took 52.30 ms. Allocated memory is still 309.3 MB. Free memory was 258.7 MB in the beginning and 257.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-18 15:47:50,963 INFO ]: RCFGBuilder took 324.08 ms. Allocated memory is still 309.3 MB. Free memory was 257.7 MB in the beginning and 245.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 3.6 GB. [2018-06-18 15:47:50,966 INFO ]: TraceAbstraction took 81244.00 ms. Allocated memory was 309.3 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 245.6 MB in the beginning and 439.8 MB in the end (delta: -194.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-18 15:47:50,969 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 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 89.14 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 258.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 52.30 ms. Allocated memory is still 309.3 MB. Free memory was 258.7 MB in the beginning and 257.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 324.08 ms. Allocated memory is still 309.3 MB. Free memory was 257.7 MB in the beginning and 245.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 81244.00 ms. Allocated memory was 309.3 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 245.6 MB in the beginning and 439.8 MB in the end (delta: -194.2 MB). 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 120960 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 81.1s 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, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s 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, 0.7s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 600 SizeOfPredicates, 6 NumberOfNonLiveVariables, 154 ConjunctsInSsa, 8 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_3.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_15-47-50-992.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/hysteresis_3.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_15-47-50-992.csv Completed graceful shutdown