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_2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 18:36:21,322 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 18:36:21,323 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 18:36:21,334 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 18:36:21,334 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 18:36:21,335 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 18:36:21,336 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 18:36:21,338 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 18:36:21,339 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 18:36:21,340 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 18:36:21,340 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 18:36:21,341 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 18:36:21,342 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 18:36:21,345 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 18:36:21,346 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 18:36:21,346 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 18:36:21,348 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 18:36:21,350 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 18:36:21,351 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 18:36:21,352 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 18:36:21,353 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 18:36:21,356 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 18:36:21,356 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 18:36:21,356 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 18:36:21,357 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 18:36:21,358 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 18:36:21,359 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 18:36:21,360 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 18:36:21,361 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 18:36:21,361 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 18:36:21,362 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 18:36:21,362 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 18:36:21,362 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 18:36:21,363 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 18:36:21,364 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 18:36:21,364 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 18:36:21,377 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 18:36:21,377 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 18:36:21,378 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 18:36:21,378 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 18:36:21,379 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 18:36:21,379 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 18:36:21,379 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 18:36:21,380 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 18:36:21,380 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 18:36:21,380 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 18:36:21,380 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 18:36:21,380 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 18:36:21,381 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 18:36:21,381 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 18:36:21,381 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 18:36:21,381 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 18:36:21,382 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 18:36:21,382 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 18:36:21,382 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 18:36:21,383 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 18:36:21,384 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 18:36:21,428 INFO ]: Repository-Root is: /tmp [2018-06-22 18:36:21,442 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 18:36:21,450 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 18:36:21,453 INFO ]: Initializing SmtParser... [2018-06-22 18:36:21,453 INFO ]: SmtParser initialized [2018-06-22 18:36:21,453 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_2.smt2 [2018-06-22 18:36:21,455 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 18:36:21,542 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_2.smt2 unknown [2018-06-22 18:36:21,852 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/hysteresis_2.smt2 [2018-06-22 18:36:21,859 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 18:36:21,865 INFO ]: Walking toolchain with 4 elements. [2018-06-22 18:36:21,865 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 18:36:21,865 INFO ]: Initializing ChcToBoogie... [2018-06-22 18:36:21,866 INFO ]: ChcToBoogie initialized [2018-06-22 18:36:21,869 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:36:21" (1/1) ... [2018-06-22 18:36:21,919 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:21 Unit [2018-06-22 18:36:21,919 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 18:36:21,919 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 18:36:21,919 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 18:36:21,919 INFO ]: Boogie Preprocessor initialized [2018-06-22 18:36:21,942 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:21" (1/1) ... [2018-06-22 18:36:21,942 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:21" (1/1) ... [2018-06-22 18:36:21,951 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:21" (1/1) ... [2018-06-22 18:36:21,951 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:21" (1/1) ... [2018-06-22 18:36:21,959 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:21" (1/1) ... [2018-06-22 18:36:21,960 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:21" (1/1) ... [2018-06-22 18:36:21,962 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:21" (1/1) ... [2018-06-22 18:36:21,963 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 18:36:21,964 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 18:36:21,964 INFO ]: Initializing RCFGBuilder... [2018-06-22 18:36:21,964 INFO ]: RCFGBuilder initialized [2018-06-22 18:36:21,965 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:21" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 18:36:21,980 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 18:36:21,980 INFO ]: Found specification of procedure False [2018-06-22 18:36:21,980 INFO ]: Found implementation of procedure False [2018-06-22 18:36:21,980 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 18:36:21,980 INFO ]: Found specification of procedure state [2018-06-22 18:36:21,980 INFO ]: Found implementation of procedure state [2018-06-22 18:36:21,980 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 18:36:21,980 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 18:36:21,980 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 18:36:22,253 INFO ]: Using library mode [2018-06-22 18:36:22,254 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:36:22 BoogieIcfgContainer [2018-06-22 18:36:22,254 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 18:36:22,262 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 18:36:22,263 INFO ]: Initializing TraceAbstraction... [2018-06-22 18:36:22,265 INFO ]: TraceAbstraction initialized [2018-06-22 18:36:22,266 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:36:21" (1/3) ... [2018-06-22 18:36:22,266 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459cf8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 06:36:22, skipping insertion in model container [2018-06-22 18:36:22,267 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:36:21" (2/3) ... [2018-06-22 18:36:22,267 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459cf8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 06:36:22, skipping insertion in model container [2018-06-22 18:36:22,267 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:36:22" (3/3) ... [2018-06-22 18:36:22,269 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 18:36:22,278 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 18:36:22,289 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 18:36:22,334 INFO ]: Using default assertion order modulation [2018-06-22 18:36:22,335 INFO ]: Interprodecural is true [2018-06-22 18:36:22,335 INFO ]: Hoare is false [2018-06-22 18:36:22,335 INFO ]: Compute interpolants for FPandBP [2018-06-22 18:36:22,335 INFO ]: Backedges is TWOTRACK [2018-06-22 18:36:22,335 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 18:36:22,335 INFO ]: Difference is false [2018-06-22 18:36:22,335 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 18:36:22,335 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 18:36:22,348 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 18:36:22,359 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 18:36:22,359 INFO ]: Found error trace [2018-06-22 18:36:22,359 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:36:22,360 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:36:22,363 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 18:36:22,365 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:36:22,365 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:36:22,398 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:36:22,398 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:36:22,398 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:36:22,461 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:36:22,584 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 18:36:22,586 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 18:36:22,586 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 18:36:22,588 INFO ]: Interpolant automaton has 4 states [2018-06-22 18:36:22,603 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 18:36:22,604 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 18:36:22,606 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 18:36:22,699 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 18:36:22,699 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 18:36:22,699 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 18:36:22,700 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 18:36:22,701 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 18:36:22,709 INFO ]: With dead ends: 13 [2018-06-22 18:36:22,709 INFO ]: Without dead ends: 13 [2018-06-22 18:36:22,711 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 [2018-06-22 18:36:22,723 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 18:36:22,743 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 18:36:22,743 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 18:36:22,744 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 18:36:22,745 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 18:36:22,745 INFO ]: Finished accepts. word is rejected. [2018-06-22 18:36:22,745 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 18:36:22,745 INFO ]: Interpolant automaton has 4 states. [2018-06-22 18:36:22,745 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 18:36:22,746 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 18:36:22,746 INFO ]: Found error trace [2018-06-22 18:36:22,746 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:36:22,746 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:36:22,746 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 18:36:22,746 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:36:22,746 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:36:22,747 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:36:22,747 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:36:22,747 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:36:22,780 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:36:22,992 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 18:36:22,992 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 18:36:22,992 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 18:36:23,001 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:36:23,080 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:36:23,090 INFO ]: Computing forward predicates... [2018-06-22 18:36:23,642 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 18:36:23,675 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 18:36:23,675 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 18:36:23,676 INFO ]: Interpolant automaton has 8 states [2018-06-22 18:36:23,676 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 18:36:23,676 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 18:36:23,676 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 18:36:24,028 WARN ]: Spent 204.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-06-22 18:36:24,183 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 18:36:24,183 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 18:36:24,184 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 18:36:24,184 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 18:36:24,185 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 18:36:24,185 INFO ]: With dead ends: 15 [2018-06-22 18:36:24,185 INFO ]: Without dead ends: 15 [2018-06-22 18:36:24,186 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 18:36:24,186 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 18:36:24,189 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 18:36:24,189 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 18:36:24,191 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 18:36:24,191 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 18:36:24,192 INFO ]: Finished accepts. word is rejected. [2018-06-22 18:36:24,192 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 18:36:24,192 INFO ]: Interpolant automaton has 8 states. [2018-06-22 18:36:24,192 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 18:36:24,192 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 18:36:24,192 INFO ]: Found error trace [2018-06-22 18:36:24,192 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:36:24,193 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:36:24,193 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 18:36:24,193 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:36:24,193 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:36:24,194 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:36:24,194 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:36:24,194 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:36:24,267 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:36:24,996 WARN ]: Spent 561.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2018-06-22 18:36:25,172 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 18:36:25,172 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 18:36:25,172 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 18:36:25,180 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 18:36:25,252 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 18:36:25,252 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:36:25,257 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 18:37:28,020 WARN ]: Removed 276 from assertion stack [2018-06-22 18:37:28,020 INFO ]: Timeout while computing interpolants [2018-06-22 18:37:28,221 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 18:37:28,221 WARN ]: Verification canceled [2018-06-22 18:37:28,228 WARN ]: Timeout [2018-06-22 18:37:28,228 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 06:37:28 BoogieIcfgContainer [2018-06-22 18:37:28,228 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 18:37:28,229 INFO ]: Toolchain (without parser) took 66369.18 ms. Allocated memory was 308.8 MB in the beginning and 1.2 GB in the end (delta: 932.7 MB). Free memory was 259.1 MB in the beginning and 1.2 GB in the end (delta: -936.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-22 18:37:28,230 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 18:37:28,230 INFO ]: ChcToBoogie took 53.57 ms. Allocated memory is still 308.8 MB. Free memory was 258.1 MB in the beginning and 256.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:37:28,233 INFO ]: Boogie Preprocessor took 44.04 ms. Allocated memory is still 308.8 MB. Free memory was 256.1 MB in the beginning and 255.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 18:37:28,233 INFO ]: RCFGBuilder took 290.34 ms. Allocated memory is still 308.8 MB. Free memory was 255.2 MB in the beginning and 243.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:37:28,234 INFO ]: TraceAbstraction took 65965.87 ms. Allocated memory was 308.8 MB in the beginning and 1.2 GB in the end (delta: 932.7 MB). Free memory was 243.2 MB in the beginning and 1.2 GB in the end (delta: -952.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-22 18:37:28,237 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 308.8 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 53.57 ms. Allocated memory is still 308.8 MB. Free memory was 258.1 MB in the beginning and 256.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 44.04 ms. Allocated memory is still 308.8 MB. Free memory was 256.1 MB in the beginning and 255.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 290.34 ms. Allocated memory is still 308.8 MB. Free memory was 255.2 MB in the beginning and 243.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 65965.87 ms. Allocated memory was 308.8 MB in the beginning and 1.2 GB in the end (delta: 932.7 MB). Free memory was 243.2 MB in the beginning and 1.2 GB in the end (delta: -952.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 1703. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 65.8s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 7 SDslu, 37 SDs, 0 SdLazy, 26 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 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, 0.8s 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_2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_18-37-28-256.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/hysteresis_2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_18-37-28-256.csv Completed graceful shutdown