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/SYNAPSE_1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 20:07:59,317 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 20:07:59,320 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 20:07:59,334 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 20:07:59,334 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 20:07:59,335 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 20:07:59,336 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 20:07:59,338 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 20:07:59,339 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 20:07:59,340 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 20:07:59,341 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 20:07:59,341 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 20:07:59,342 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 20:07:59,343 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 20:07:59,344 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 20:07:59,346 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 20:07:59,348 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 20:07:59,357 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 20:07:59,358 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 20:07:59,359 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 20:07:59,360 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 20:07:59,366 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 20:07:59,367 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 20:07:59,367 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 20:07:59,368 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 20:07:59,369 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 20:07:59,369 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 20:07:59,370 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 20:07:59,370 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 20:07:59,374 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 20:07:59,375 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 20:07:59,375 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 20:07:59,375 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 20:07:59,376 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 20:07:59,376 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 20:07:59,377 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 20:07:59,396 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 20:07:59,397 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 20:07:59,397 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 20:07:59,397 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 20:07:59,398 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 20:07:59,398 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 20:07:59,398 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 20:07:59,399 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 20:07:59,399 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 20:07:59,399 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 20:07:59,399 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 20:07:59,399 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 20:07:59,399 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 20:07:59,400 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 20:07:59,400 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 20:07:59,400 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 20:07:59,401 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 20:07:59,401 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 20:07:59,401 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 20:07:59,402 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 20:07:59,402 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 20:07:59,447 INFO ]: Repository-Root is: /tmp [2018-06-22 20:07:59,457 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 20:07:59,460 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 20:07:59,461 INFO ]: Initializing SmtParser... [2018-06-22 20:07:59,462 INFO ]: SmtParser initialized [2018-06-22 20:07:59,462 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/SYNAPSE_1.smt2 [2018-06-22 20:07:59,463 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 20:07:59,552 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/SYNAPSE_1.smt2 unknown [2018-06-22 20:07:59,951 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/SYNAPSE_1.smt2 [2018-06-22 20:07:59,956 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 20:07:59,970 INFO ]: Walking toolchain with 4 elements. [2018-06-22 20:07:59,971 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 20:07:59,971 INFO ]: Initializing ChcToBoogie... [2018-06-22 20:07:59,971 INFO ]: ChcToBoogie initialized [2018-06-22 20:07:59,974 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:07:59" (1/1) ... [2018-06-22 20:08:00,055 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:08:00 Unit [2018-06-22 20:08:00,055 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 20:08:00,055 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 20:08:00,055 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 20:08:00,055 INFO ]: Boogie Preprocessor initialized [2018-06-22 20:08:00,095 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:08:00" (1/1) ... [2018-06-22 20:08:00,095 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:08:00" (1/1) ... [2018-06-22 20:08:00,104 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:08:00" (1/1) ... [2018-06-22 20:08:00,105 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:08:00" (1/1) ... [2018-06-22 20:08:00,110 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:08:00" (1/1) ... [2018-06-22 20:08:00,111 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:08:00" (1/1) ... [2018-06-22 20:08:00,112 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:08:00" (1/1) ... [2018-06-22 20:08:00,114 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 20:08:00,115 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 20:08:00,115 INFO ]: Initializing RCFGBuilder... [2018-06-22 20:08:00,115 INFO ]: RCFGBuilder initialized [2018-06-22 20:08:00,116 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:08:00" (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 20:08:00,128 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 20:08:00,128 INFO ]: Found specification of procedure False [2018-06-22 20:08:00,128 INFO ]: Found implementation of procedure False [2018-06-22 20:08:00,128 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 20:08:00,128 INFO ]: Found specification of procedure state [2018-06-22 20:08:00,128 INFO ]: Found implementation of procedure state [2018-06-22 20:08:00,128 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 20:08:00,128 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 20:08:00,128 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 20:08:00,370 INFO ]: Using library mode [2018-06-22 20:08:00,371 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:08:00 BoogieIcfgContainer [2018-06-22 20:08:00,371 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 20:08:00,375 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 20:08:00,375 INFO ]: Initializing TraceAbstraction... [2018-06-22 20:08:00,380 INFO ]: TraceAbstraction initialized [2018-06-22 20:08:00,380 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:07:59" (1/3) ... [2018-06-22 20:08:00,381 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4b32aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:08:00, skipping insertion in model container [2018-06-22 20:08:00,381 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:08:00" (2/3) ... [2018-06-22 20:08:00,381 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4b32aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:08:00, skipping insertion in model container [2018-06-22 20:08:00,382 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:08:00" (3/3) ... [2018-06-22 20:08:00,383 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 20:08:00,393 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 20:08:00,400 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 20:08:00,440 INFO ]: Using default assertion order modulation [2018-06-22 20:08:00,440 INFO ]: Interprodecural is true [2018-06-22 20:08:00,440 INFO ]: Hoare is false [2018-06-22 20:08:00,440 INFO ]: Compute interpolants for FPandBP [2018-06-22 20:08:00,440 INFO ]: Backedges is TWOTRACK [2018-06-22 20:08:00,440 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 20:08:00,441 INFO ]: Difference is false [2018-06-22 20:08:00,441 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 20:08:00,441 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 20:08:00,453 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 20:08:00,463 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 20:08:00,463 INFO ]: Found error trace [2018-06-22 20:08:00,463 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:08:00,464 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:08:00,467 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 20:08:00,468 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:08:00,469 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:08:00,500 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:08:00,500 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:08:00,500 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:08:00,570 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:08:00,764 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 20:08:00,766 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 20:08:00,766 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 20:08:00,767 INFO ]: Interpolant automaton has 4 states [2018-06-22 20:08:00,782 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 20:08:00,782 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 20:08:00,784 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 20:08:00,885 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:08:00,885 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 20:08:00,886 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 20:08:00,887 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 20:08:00,887 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:08:00,895 INFO ]: With dead ends: 13 [2018-06-22 20:08:00,895 INFO ]: Without dead ends: 13 [2018-06-22 20:08:00,897 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 20:08:00,909 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 20:08:00,947 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 20:08:00,948 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 20:08:00,949 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 20:08:00,951 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 20:08:00,951 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:08:00,951 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 20:08:00,951 INFO ]: Interpolant automaton has 4 states. [2018-06-22 20:08:00,951 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 20:08:00,952 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 20:08:00,952 INFO ]: Found error trace [2018-06-22 20:08:00,952 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:08:00,953 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:08:00,953 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 20:08:00,953 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:08:00,953 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:08:00,954 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:08:00,954 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:08:00,954 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:08:01,037 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:08:01,754 WARN ]: Spent 470.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2018-06-22 20:08:01,851 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:08:01,851 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:08:01,851 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 20:08:01,877 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:08:01,984 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:08:01,994 INFO ]: Computing forward predicates... [2018-06-22 20:08:02,538 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:08:03,415 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:08:03,468 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-22 20:08:05,736 INFO ]: Simplified to disjunction of 5184 conjuctions. [2018-06-22 20:08:05,783 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 20:08:05,942 WARN ]: Simplifying disjunction of 10368 conjuctions. This might take some time... [2018-06-22 20:08:22,296 INFO ]: Simplified to disjunction of 10368 conjuctions. [2018-06-22 20:08:22,367 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:08:23,052 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:08:23,105 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-22 20:08:27,742 INFO ]: Simplified to disjunction of 5184 conjuctions. [2018-06-22 20:08:27,766 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:08:27,827 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-22 20:08:31,111 INFO ]: Simplified to disjunction of 5184 conjuctions. [2018-06-22 20:08:31,135 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:08:31,181 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-22 20:08:34,101 INFO ]: Simplified to disjunction of 5184 conjuctions. [2018-06-22 20:08:34,115 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:08:35,092 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:08:35,106 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-22 20:08:38,309 INFO ]: Simplified to disjunction of 5184 conjuctions. [2018-06-22 20:08:38,334 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:08:39,120 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 20:08:39,218 WARN ]: Simplifying disjunction of 10368 conjuctions. This might take some time... [2018-06-22 20:08:52,958 INFO ]: Simplified to disjunction of 10368 conjuctions. [2018-06-22 20:08:52,993 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:08:53,032 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:08:53,064 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:08:53,079 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-22 20:08:58,477 INFO ]: Simplified to disjunction of 5184 conjuctions. [2018-06-22 20:08:58,528 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:08:58,605 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:08:58,639 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:08:58,657 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:08:58,695 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:08:59,246 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:08:59,274 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:08:59,281 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:08:59,307 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-22 20:09:02,156 INFO ]: Simplified to disjunction of 5184 conjuctions. [2018-06-22 20:09:02,167 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:09:02,174 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:09:02,200 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:09:02,952 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:09:02,970 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-22 20:09:05,490 INFO ]: Simplified to disjunction of 5184 conjuctions. [2018-06-22 20:09:13,027 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:09:13,060 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:09:13,060 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 20:09:13,061 INFO ]: Interpolant automaton has 8 states [2018-06-22 20:09:13,061 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 20:09:13,061 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 20:09:13,061 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 20:09:13,572 WARN ]: Spent 367.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2018-06-22 20:09:13,763 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:09:13,763 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 20:09:13,764 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 20:09:13,765 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 20:09:13,765 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:09:13,765 INFO ]: With dead ends: 15 [2018-06-22 20:09:13,765 INFO ]: Without dead ends: 15 [2018-06-22 20:09:13,766 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-06-22 20:09:13,766 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 20:09:13,768 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 20:09:13,769 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 20:09:13,769 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 20:09:13,769 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 20:09:13,769 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:09:13,769 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 20:09:13,769 INFO ]: Interpolant automaton has 8 states. [2018-06-22 20:09:13,769 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 20:09:13,771 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 20:09:13,771 INFO ]: Found error trace [2018-06-22 20:09:13,771 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:09:13,772 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:09:13,772 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 20:09:13,772 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:09:13,772 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:09:13,773 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:09:13,773 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:09:13,773 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:09:13,875 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:09:14,247 WARN ]: Spent 171.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 8 [2018-06-22 20:09:14,411 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 20:09:14,411 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:09:14,411 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 20:09:14,424 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 20:09:14,516 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 20:09:14,516 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:09:14,522 INFO ]: Computing forward predicates... [2018-06-22 20:09:14,724 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:09:14,884 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:09:14,891 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:09:15,006 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:09:15,010 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:09:15,189 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:09:15,237 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:09:15,372 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:09:15,392 WARN ]: expecting exponential blowup for input size 12 Received shutdown request... [2018-06-22 20:09:15,908 INFO ]: Timeout while computing interpolants [2018-06-22 20:09:16,109 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 20:09:16,109 WARN ]: Verification canceled [2018-06-22 20:09:16,114 WARN ]: Timeout [2018-06-22 20:09:16,114 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:09:16 BoogieIcfgContainer [2018-06-22 20:09:16,114 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 20:09:16,115 INFO ]: Toolchain (without parser) took 76159.02 ms. Allocated memory was 305.7 MB in the beginning and 1.0 GB in the end (delta: 712.5 MB). Free memory was 253.1 MB in the beginning and 323.5 MB in the end (delta: -70.4 MB). Peak memory consumption was 642.1 MB. Max. memory is 3.6 GB. [2018-06-22 20:09:16,116 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 305.7 MB. Free memory is still 271.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 20:09:16,116 INFO ]: ChcToBoogie took 84.23 ms. Allocated memory is still 305.7 MB. Free memory was 252.1 MB in the beginning and 250.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:09:16,121 INFO ]: Boogie Preprocessor took 59.08 ms. Allocated memory is still 305.7 MB. Free memory was 250.1 MB in the beginning and 249.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:09:16,122 INFO ]: RCFGBuilder took 256.05 ms. Allocated memory is still 305.7 MB. Free memory was 249.0 MB in the beginning and 232.0 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:09:16,122 INFO ]: TraceAbstraction took 75739.64 ms. Allocated memory was 305.7 MB in the beginning and 1.0 GB in the end (delta: 712.5 MB). Free memory was 232.0 MB in the beginning and 323.5 MB in the end (delta: -91.5 MB). Peak memory consumption was 621.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:09:16,135 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 305.7 MB. Free memory is still 271.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 84.23 ms. Allocated memory is still 305.7 MB. Free memory was 252.1 MB in the beginning and 250.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 59.08 ms. Allocated memory is still 305.7 MB. Free memory was 250.1 MB in the beginning and 249.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 256.05 ms. Allocated memory is still 305.7 MB. Free memory was 249.0 MB in the beginning and 232.0 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 75739.64 ms. Allocated memory was 305.7 MB in the beginning and 1.0 GB in the end (delta: 712.5 MB). Free memory was 232.0 MB in the beginning and 323.5 MB in the end (delta: -91.5 MB). Peak memory consumption was 621.0 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 18 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 2592 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 75.6s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 7 SDslu, 47 SDs, 0 SdLazy, 33 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 72.0s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1128 SizeOfPredicates, 25 NumberOfNonLiveVariables, 312 ConjunctsInSsa, 30 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/SYNAPSE_1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_20-09-16-151.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/SYNAPSE_1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_20-09-16-151.csv Completed graceful shutdown