java -Xss4m -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/hysteresis_3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 16:05:55,941 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 16:05:55,942 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 16:05:55,953 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 16:05:55,953 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 16:05:55,954 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 16:05:55,955 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 16:05:55,957 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 16:05:55,958 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 16:05:55,959 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 16:05:55,960 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 16:05:55,960 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 16:05:55,961 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 16:05:55,962 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 16:05:55,965 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 16:05:55,966 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 16:05:55,968 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 16:05:55,979 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 16:05:55,981 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 16:05:55,982 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 16:05:55,983 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 16:05:55,985 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 16:05:55,985 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 16:05:55,986 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 16:05:55,986 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 16:05:55,992 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 16:05:55,993 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 16:05:55,994 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 16:05:55,995 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 16:05:55,995 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 16:05:55,995 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 16:05:55,996 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 16:05:55,996 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 16:05:56,002 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 16:05:56,002 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 16:05:56,003 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 16:05:56,017 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 16:05:56,017 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 16:05:56,018 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 16:05:56,018 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 16:05:56,019 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 16:05:56,019 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 16:05:56,020 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 16:05:56,020 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 16:05:56,020 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 16:05:56,020 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 16:05:56,020 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 16:05:56,021 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 16:05:56,021 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 16:05:56,021 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 16:05:56,021 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 16:05:56,021 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 16:05:56,022 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 16:05:56,022 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 16:05:56,022 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 16:05:56,022 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 16:05:56,022 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 16:05:56,024 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 16:05:56,024 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 16:05:56,055 INFO ]: Repository-Root is: /tmp [2018-06-25 16:05:56,066 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 16:05:56,070 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 16:05:56,071 INFO ]: Initializing SmtParser... [2018-06-25 16:05:56,071 INFO ]: SmtParser initialized [2018-06-25 16:05:56,072 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_3.smt2 [2018-06-25 16:05:56,073 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 [2018-06-25 16:05:56,163 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_3.smt2 unknown [2018-06-25 16:05:56,485 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_3.smt2 [2018-06-25 16:05:56,490 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 16:05:56,504 INFO ]: Walking toolchain with 4 elements. [2018-06-25 16:05:56,505 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 16:05:56,505 INFO ]: Initializing ChcToBoogie... [2018-06-25 16:05:56,505 INFO ]: ChcToBoogie initialized [2018-06-25 16:05:56,508 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:05:56" (1/1) ... [2018-06-25 16:05:56,571 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:05:56 Unit [2018-06-25 16:05:56,571 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 16:05:56,572 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 16:05:56,572 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 16:05:56,572 INFO ]: Boogie Preprocessor initialized [2018-06-25 16:05:56,590 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:05:56" (1/1) ... [2018-06-25 16:05:56,590 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:05:56" (1/1) ... [2018-06-25 16:05:56,595 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:05:56" (1/1) ... [2018-06-25 16:05:56,595 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:05:56" (1/1) ... [2018-06-25 16:05:56,599 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:05:56" (1/1) ... [2018-06-25 16:05:56,601 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:05:56" (1/1) ... [2018-06-25 16:05:56,602 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:05:56" (1/1) ... [2018-06-25 16:05:56,604 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 16:05:56,605 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 16:05:56,605 INFO ]: Initializing RCFGBuilder... [2018-06-25 16:05:56,605 INFO ]: RCFGBuilder initialized [2018-06-25 16:05:56,605 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:05:56" (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) [2018-06-25 16:05:56,624 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 16:05:56,625 INFO ]: Found specification of procedure gotoProc [2018-06-25 16:05:56,625 INFO ]: Found implementation of procedure gotoProc [2018-06-25 16:05:56,625 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 16:05:56,625 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 16:05:56,625 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 [2018-06-25 16:05:56,918 INFO ]: Using library mode [2018-06-25 16:05:56,918 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:05:56 BoogieIcfgContainer [2018-06-25 16:05:56,918 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 16:05:56,920 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 16:05:56,920 INFO ]: Initializing TraceAbstraction... [2018-06-25 16:05:56,923 INFO ]: TraceAbstraction initialized [2018-06-25 16:05:56,923 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:05:56" (1/3) ... [2018-06-25 16:05:56,924 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a435c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 04:05:56, skipping insertion in model container [2018-06-25 16:05:56,924 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:05:56" (2/3) ... [2018-06-25 16:05:56,924 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a435c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 04:05:56, skipping insertion in model container [2018-06-25 16:05:56,924 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:05:56" (3/3) ... [2018-06-25 16:05:56,926 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 16:05:56,935 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 16:05:56,943 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 16:05:56,976 INFO ]: Using default assertion order modulation [2018-06-25 16:05:56,977 INFO ]: Interprodecural is true [2018-06-25 16:05:56,977 INFO ]: Hoare is false [2018-06-25 16:05:56,977 INFO ]: Compute interpolants for FPandBP [2018-06-25 16:05:56,977 INFO ]: Backedges is TWOTRACK [2018-06-25 16:05:56,977 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 16:05:56,977 INFO ]: Difference is false [2018-06-25 16:05:56,977 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 16:05:56,977 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 16:05:56,988 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 16:05:56,998 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 16:05:56,998 INFO ]: Found error trace [2018-06-25 16:05:56,999 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:05:56,999 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:05:57,005 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-25 16:05:57,007 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:05:57,007 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:05:57,054 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:05:57,054 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:05:57,054 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:05:57,125 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:05:57,209 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:05:57,211 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 16:05:57,211 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 16:05:57,212 INFO ]: Interpolant automaton has 3 states [2018-06-25 16:05:57,223 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 16:05:57,223 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 16:05:57,225 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 16:05:57,312 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:05:57,312 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 16:05:57,312 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 16:05:57,314 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 16:05:57,314 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:05:57,323 INFO ]: With dead ends: 9 [2018-06-25 16:05:57,323 INFO ]: Without dead ends: 9 [2018-06-25 16:05:57,325 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 [2018-06-25 16:05:57,342 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 16:05:57,364 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 16:05:57,365 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 16:05:57,366 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 16:05:57,367 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 16:05:57,367 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:05:57,367 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 16:05:57,367 INFO ]: Interpolant automaton has 3 states. [2018-06-25 16:05:57,367 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 16:05:57,368 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 16:05:57,369 INFO ]: Found error trace [2018-06-25 16:05:57,369 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:05:57,369 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:05:57,369 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-25 16:05:57,369 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:05:57,369 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:05:57,370 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:05:57,370 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:05:57,370 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:05:57,411 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:05:57,560 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:05:57,560 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:05:57,560 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 [2018-06-25 16:05:57,578 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:05:57,684 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:05:57,698 INFO ]: Computing forward predicates... [2018-06-25 16:05:57,876 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:05:57,908 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:05:57,908 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 16:05:57,908 INFO ]: Interpolant automaton has 5 states [2018-06-25 16:05:57,909 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 16:05:57,909 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 16:05:57,909 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 16:05:58,022 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:05:58,022 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 16:05:58,023 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 16:05:58,023 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 16:05:58,023 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:05:58,024 INFO ]: With dead ends: 10 [2018-06-25 16:05:58,024 INFO ]: Without dead ends: 10 [2018-06-25 16:05:58,025 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 16:05:58,025 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 16:05:58,026 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 16:05:58,026 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 16:05:58,026 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 16:05:58,027 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 16:05:58,027 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:05:58,027 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 16:05:58,027 INFO ]: Interpolant automaton has 5 states. [2018-06-25 16:05:58,027 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 16:05:58,027 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 16:05:58,027 INFO ]: Found error trace [2018-06-25 16:05:58,027 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:05:58,027 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:05:58,027 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-25 16:05:58,027 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:05:58,027 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:05:58,030 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:05:58,030 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:05:58,030 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:05:58,134 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:05:58,445 WARN ]: Spent 169.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 5 [2018-06-25 16:05:58,616 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:05:58,616 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:05:58,616 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 [2018-06-25 16:05:58,631 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 16:05:58,725 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 16:05:58,725 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:05:58,730 INFO ]: Computing forward predicates... [2018-06-25 16:05:58,960 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 16:05:59,419 WARN ]: Simplifying disjunction of 29376 conjuctions. This might take some time... Received shutdown request... [2018-06-25 16:07:19,457 INFO ]: Timeout while computing interpolants [2018-06-25 16:07:19,657 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 16:07:19,657 WARN ]: Verification canceled [2018-06-25 16:07:19,661 WARN ]: Timeout [2018-06-25 16:07:19,661 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 04:07:19 BoogieIcfgContainer [2018-06-25 16:07:19,661 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 16:07:19,662 INFO ]: Toolchain (without parser) took 83171.55 ms. Allocated memory was 304.1 MB in the beginning and 382.7 MB in the end (delta: 78.6 MB). Free memory was 256.6 MB in the beginning and 264.8 MB in the end (delta: -8.2 MB). Peak memory consumption was 117.3 MB. Max. memory is 3.6 GB. [2018-06-25 16:07:19,663 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 304.1 MB. Free memory is still 269.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 16:07:19,663 INFO ]: ChcToBoogie took 67.19 ms. Allocated memory is still 304.1 MB. Free memory was 255.5 MB in the beginning and 253.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:07:19,664 INFO ]: Boogie Preprocessor took 32.08 ms. Allocated memory is still 304.1 MB. Free memory was 253.5 MB in the beginning and 252.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. [2018-06-25 16:07:19,665 INFO ]: RCFGBuilder took 313.75 ms. Allocated memory is still 304.1 MB. Free memory was 252.5 MB in the beginning and 238.4 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:07:19,665 INFO ]: TraceAbstraction took 82741.67 ms. Allocated memory was 304.1 MB in the beginning and 382.7 MB in the end (delta: 78.6 MB). Free memory was 238.4 MB in the beginning and 264.8 MB in the end (delta: -26.4 MB). Peak memory consumption was 99.1 MB. Max. memory is 3.6 GB. [2018-06-25 16:07:19,669 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 304.1 MB. Free memory is still 269.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 67.19 ms. Allocated memory is still 304.1 MB. Free memory was 255.5 MB in the beginning and 253.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 32.08 ms. Allocated memory is still 304.1 MB. Free memory was 253.5 MB in the beginning and 252.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 313.75 ms. Allocated memory is still 304.1 MB. Free memory was 252.5 MB in the beginning and 238.4 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 82741.67 ms. Allocated memory was 304.1 MB in the beginning and 382.7 MB in the end (delta: 78.6 MB). Free memory was 238.4 MB in the beginning and 264.8 MB in the end (delta: -26.4 MB). Peak memory consumption was 99.1 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 29376 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 82.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 15 SDs, 0 SdLazy, 11 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, 0.2s 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 175 SizeOfPredicates, 0 NumberOfNonLiveVariables, 179 ConjunctsInSsa, 8 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/hysteresis_3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_16-07-19-681.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/hysteresis_3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_16-07-19-681.csv Completed graceful shutdown