java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_all.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 18:37:31,692 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 18:37:31,695 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 18:37:31,710 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 18:37:31,710 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 18:37:31,711 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 18:37:31,712 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 18:37:31,715 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 18:37:31,719 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 18:37:31,720 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 18:37:31,720 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 18:37:31,721 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 18:37:31,721 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 18:37:31,723 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 18:37:31,726 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 18:37:31,727 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 18:37:31,729 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 18:37:31,730 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 18:37:31,732 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 18:37:31,733 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 18:37:31,734 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 18:37:31,737 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 18:37:31,737 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 18:37:31,737 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 18:37:31,738 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 18:37:31,739 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 18:37:31,740 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 18:37:31,741 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 18:37:31,742 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 18:37:31,742 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 18:37:31,743 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 18:37:31,743 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 18:37:31,744 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 18:37:31,744 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 18:37:31,745 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 18:37:31,745 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 18:37:31,758 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 18:37:31,759 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 18:37:31,759 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 18:37:31,759 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 18:37:31,760 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 18:37:31,761 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 18:37:31,761 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 18:37:31,761 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 18:37:31,761 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 18:37:31,762 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 18:37:31,762 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 18:37:31,762 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 18:37:31,762 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 18:37:31,762 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 18:37:31,763 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 18:37:31,763 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 18:37:31,763 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 18:37:31,763 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 18:37:31,763 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 18:37:31,765 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 18:37:31,765 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 18:37:31,817 INFO ]: Repository-Root is: /tmp [2018-06-22 18:37:31,829 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 18:37:31,834 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 18:37:31,835 INFO ]: Initializing SmtParser... [2018-06-22 18:37:31,835 INFO ]: SmtParser initialized [2018-06-22 18:37:31,836 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_all.smt2 [2018-06-22 18:37:31,837 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 18:37:31,918 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_all.smt2 unknown [2018-06-22 18:37:32,201 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_all.smt2 [2018-06-22 18:37:32,206 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 18:37:32,213 INFO ]: Walking toolchain with 4 elements. [2018-06-22 18:37:32,213 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 18:37:32,214 INFO ]: Initializing ChcToBoogie... [2018-06-22 18:37:32,214 INFO ]: ChcToBoogie initialized [2018-06-22 18:37:32,218 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:37:32" (1/1) ... [2018-06-22 18:37:32,269 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:37:32 Unit [2018-06-22 18:37:32,269 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 18:37:32,270 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 18:37:32,270 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 18:37:32,270 INFO ]: Boogie Preprocessor initialized [2018-06-22 18:37:32,292 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:37:32" (1/1) ... [2018-06-22 18:37:32,293 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:37:32" (1/1) ... [2018-06-22 18:37:32,306 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:37:32" (1/1) ... [2018-06-22 18:37:32,307 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:37:32" (1/1) ... [2018-06-22 18:37:32,318 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:37:32" (1/1) ... [2018-06-22 18:37:32,320 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:37:32" (1/1) ... [2018-06-22 18:37:32,321 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:37:32" (1/1) ... [2018-06-22 18:37:32,328 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 18:37:32,329 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 18:37:32,329 INFO ]: Initializing RCFGBuilder... [2018-06-22 18:37:32,329 INFO ]: RCFGBuilder initialized [2018-06-22 18:37:32,330 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:37:32" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 18:37:32,350 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 18:37:32,350 INFO ]: Found specification of procedure False [2018-06-22 18:37:32,350 INFO ]: Found implementation of procedure False [2018-06-22 18:37:32,350 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 18:37:32,350 INFO ]: Found specification of procedure state [2018-06-22 18:37:32,350 INFO ]: Found implementation of procedure state [2018-06-22 18:37:32,350 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 18:37:32,350 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 18:37:32,351 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 18:37:32,740 INFO ]: Using library mode [2018-06-22 18:37:32,740 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:37:32 BoogieIcfgContainer [2018-06-22 18:37:32,740 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 18:37:32,742 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 18:37:32,742 INFO ]: Initializing TraceAbstraction... [2018-06-22 18:37:32,745 INFO ]: TraceAbstraction initialized [2018-06-22 18:37:32,745 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:37:32" (1/3) ... [2018-06-22 18:37:32,746 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1621a698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 06:37:32, skipping insertion in model container [2018-06-22 18:37:32,746 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:37:32" (2/3) ... [2018-06-22 18:37:32,747 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1621a698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 06:37:32, skipping insertion in model container [2018-06-22 18:37:32,756 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:37:32" (3/3) ... [2018-06-22 18:37:32,758 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 18:37:32,770 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 18:37:32,787 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 18:37:32,840 INFO ]: Using default assertion order modulation [2018-06-22 18:37:32,841 INFO ]: Interprodecural is true [2018-06-22 18:37:32,841 INFO ]: Hoare is false [2018-06-22 18:37:32,841 INFO ]: Compute interpolants for FPandBP [2018-06-22 18:37:32,841 INFO ]: Backedges is TWOTRACK [2018-06-22 18:37:32,841 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 18:37:32,841 INFO ]: Difference is false [2018-06-22 18:37:32,841 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 18:37:32,841 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 18:37:32,862 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 18:37:32,877 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 18:37:32,877 INFO ]: Found error trace [2018-06-22 18:37:32,878 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:37:32,878 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:37:32,884 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 18:37:32,886 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:37:32,887 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:37:32,930 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:37:32,930 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:37:32,930 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:37:32,997 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:37:33,181 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 18:37:33,183 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 18:37:33,183 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 18:37:33,184 INFO ]: Interpolant automaton has 4 states [2018-06-22 18:37:33,195 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 18:37:33,195 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 18:37:33,197 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 18:37:33,291 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 18:37:33,291 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 18:37:33,293 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 18:37:33,294 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 18:37:33,295 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 18:37:33,312 INFO ]: With dead ends: 13 [2018-06-22 18:37:33,312 INFO ]: Without dead ends: 13 [2018-06-22 18:37:33,318 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 18:37:33,337 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 18:37:33,377 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 18:37:33,378 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 18:37:33,379 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 18:37:33,381 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 18:37:33,381 INFO ]: Finished accepts. word is rejected. [2018-06-22 18:37:33,381 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 18:37:33,381 INFO ]: Interpolant automaton has 4 states. [2018-06-22 18:37:33,381 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 18:37:33,383 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 18:37:33,383 INFO ]: Found error trace [2018-06-22 18:37:33,383 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:37:33,383 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:37:33,383 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 18:37:33,383 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:37:33,383 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:37:33,384 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:37:33,384 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:37:33,384 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:37:33,458 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:37:33,749 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 18:37:33,750 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 18:37:33,750 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 18:37:33,760 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:37:33,818 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:37:33,831 INFO ]: Computing forward predicates... [2018-06-22 18:37:34,239 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,287 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,350 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,377 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,403 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,431 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,436 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,442 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,463 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,516 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,543 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,563 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,569 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,574 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,578 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,585 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,593 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,622 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,655 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,675 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,708 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:34,739 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:35,772 WARN ]: Spent 423.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 4 [2018-06-22 18:37:35,880 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 18:37:35,904 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 18:37:35,904 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 18:37:35,905 INFO ]: Interpolant automaton has 8 states [2018-06-22 18:37:35,905 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 18:37:35,905 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 18:37:35,905 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 18:37:36,286 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 18:37:36,286 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 18:37:36,286 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 18:37:36,286 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 18:37:36,286 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 18:37:36,287 INFO ]: With dead ends: 15 [2018-06-22 18:37:36,287 INFO ]: Without dead ends: 15 [2018-06-22 18:37:36,288 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 [2018-06-22 18:37:36,288 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 18:37:36,290 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 18:37:36,290 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 18:37:36,290 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 18:37:36,290 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 18:37:36,291 INFO ]: Finished accepts. word is rejected. [2018-06-22 18:37:36,291 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 18:37:36,291 INFO ]: Interpolant automaton has 8 states. [2018-06-22 18:37:36,291 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 18:37:36,291 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 18:37:36,291 INFO ]: Found error trace [2018-06-22 18:37:36,291 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:37:36,291 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:37:36,292 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 18:37:36,292 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:37:36,292 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:37:36,292 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:37:36,292 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:37:36,292 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:37:36,348 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:37:36,720 WARN ]: Spent 176.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2018-06-22 18:37:36,937 WARN ]: Spent 205.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2018-06-22 18:37:37,031 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 18:37:37,031 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 18:37:37,031 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 18:37:37,040 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 18:37:37,086 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 18:37:37,086 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:37:37,091 INFO ]: Computing forward predicates... [2018-06-22 18:37:37,292 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,310 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,336 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,352 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,362 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,364 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,374 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,378 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,383 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,393 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,404 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,410 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,423 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,433 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,442 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,445 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,448 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,450 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,458 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,468 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,476 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:37,485 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:37:39,520 WARN ]: Spent 629.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 42 [2018-06-22 18:38:21,180 WARN ]: Spent 38.29 s on a formula simplification. DAG size of input: 1198 DAG size of output: 205 [2018-06-22 18:38:25,700 WARN ]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 130 [2018-06-22 18:38:26,242 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 18:38:26,262 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 18:38:26,262 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 18:38:26,262 INFO ]: Interpolant automaton has 13 states [2018-06-22 18:38:26,262 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 18:38:26,263 INFO ]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2018-06-22 18:38:26,263 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 18:38:26,881 WARN ]: Spent 486.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 48 [2018-06-22 18:38:32,632 WARN ]: Spent 5.67 s on a formula simplification. DAG size of input: 298 DAG size of output: 245 [2018-06-22 18:38:34,876 WARN ]: Spent 2.13 s on a formula simplification. DAG size of input: 372 DAG size of output: 127 Received shutdown request... [2018-06-22 18:38:36,378 WARN ]: Removed 88 from assertion stack [2018-06-22 18:38:36,379 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 18:38:36,379 WARN ]: Verification canceled [2018-06-22 18:38:36,384 WARN ]: Timeout [2018-06-22 18:38:36,384 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 06:38:36 BoogieIcfgContainer [2018-06-22 18:38:36,384 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 18:38:36,385 INFO ]: Toolchain (without parser) took 64178.42 ms. Allocated memory was 308.8 MB in the beginning and 1.0 GB in the end (delta: 698.9 MB). Free memory was 259.2 MB in the beginning and 256.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 701.7 MB. Max. memory is 3.6 GB. [2018-06-22 18:38:36,387 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 18:38:36,387 INFO ]: ChcToBoogie took 56.25 ms. Allocated memory is still 308.8 MB. Free memory was 259.2 MB in the beginning and 257.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:38:36,388 INFO ]: Boogie Preprocessor took 58.29 ms. Allocated memory is still 308.8 MB. Free memory was 257.2 MB in the beginning and 255.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:38:36,388 INFO ]: RCFGBuilder took 411.29 ms. Allocated memory is still 308.8 MB. Free memory was 255.2 MB in the beginning and 243.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:38:36,389 INFO ]: TraceAbstraction took 63642.47 ms. Allocated memory was 308.8 MB in the beginning and 1.0 GB in the end (delta: 698.9 MB). Free memory was 243.3 MB in the beginning and 256.3 MB in the end (delta: -13.1 MB). Peak memory consumption was 685.8 MB. Max. memory is 3.6 GB. [2018-06-22 18:38:36,392 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 56.25 ms. Allocated memory is still 308.8 MB. Free memory was 259.2 MB in the beginning and 257.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 58.29 ms. Allocated memory is still 308.8 MB. Free memory was 257.2 MB in the beginning and 255.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 411.29 ms. Allocated memory is still 308.8 MB. Free memory was 255.2 MB in the beginning and 243.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 63642.47 ms. Allocated memory was 308.8 MB in the beginning and 1.0 GB in the end (delta: 698.9 MB). Free memory was 243.3 MB in the beginning and 256.3 MB in the end (delta: -13.1 MB). Peak memory consumption was 685.8 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 constructing difference of abstraction (15states) and interpolant automaton (currently 6 states, 13 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 273. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 63.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 10.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 12 SDslu, 69 SDs, 0 SdLazy, 67 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 51.2s 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, 0.2s SatisfiabilityAnalysisTime, 52.3s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 176628 SizeOfPredicates, 65 NumberOfNonLiveVariables, 403 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 8/26 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_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_18-38-36-405.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/hysteresis_all.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_18-38-36-405.csv Completed graceful shutdown