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/ticket3i_4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 20:34:33,049 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 20:34:33,052 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 20:34:33,064 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 20:34:33,064 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 20:34:33,065 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 20:34:33,066 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 20:34:33,070 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 20:34:33,071 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 20:34:33,073 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 20:34:33,074 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 20:34:33,074 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 20:34:33,075 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 20:34:33,076 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 20:34:33,076 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 20:34:33,080 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 20:34:33,082 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 20:34:33,092 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 20:34:33,093 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 20:34:33,094 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 20:34:33,095 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 20:34:33,096 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 20:34:33,097 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 20:34:33,100 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 20:34:33,101 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 20:34:33,102 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 20:34:33,102 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 20:34:33,103 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 20:34:33,103 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 20:34:33,106 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 20:34:33,107 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 20:34:33,108 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 20:34:33,108 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 20:34:33,109 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 20:34:33,109 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 20:34:33,109 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 20:34:33,135 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 20:34:33,136 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 20:34:33,136 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 20:34:33,136 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 20:34:33,137 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 20:34:33,137 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 20:34:33,138 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 20:34:33,138 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 20:34:33,138 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 20:34:33,138 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 20:34:33,138 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 20:34:33,139 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 20:34:33,139 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 20:34:33,139 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 20:34:33,139 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 20:34:33,139 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 20:34:33,139 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 20:34:33,140 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 20:34:33,140 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 20:34:33,141 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 20:34:33,141 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 20:34:33,177 INFO ]: Repository-Root is: /tmp [2018-06-22 20:34:33,188 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 20:34:33,191 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 20:34:33,194 INFO ]: Initializing SmtParser... [2018-06-22 20:34:33,194 INFO ]: SmtParser initialized [2018-06-22 20:34:33,195 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_4.smt2 [2018-06-22 20:34:33,196 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 20:34:33,284 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_4.smt2 unknown [2018-06-22 20:34:33,915 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_4.smt2 [2018-06-22 20:34:33,920 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 20:34:33,925 INFO ]: Walking toolchain with 4 elements. [2018-06-22 20:34:33,925 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 20:34:33,925 INFO ]: Initializing ChcToBoogie... [2018-06-22 20:34:33,925 INFO ]: ChcToBoogie initialized [2018-06-22 20:34:33,928 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:34:33" (1/1) ... [2018-06-22 20:34:34,004 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:34 Unit [2018-06-22 20:34:34,004 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 20:34:34,005 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 20:34:34,005 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 20:34:34,005 INFO ]: Boogie Preprocessor initialized [2018-06-22 20:34:34,029 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:34" (1/1) ... [2018-06-22 20:34:34,029 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:34" (1/1) ... [2018-06-22 20:34:34,084 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:34" (1/1) ... [2018-06-22 20:34:34,084 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:34" (1/1) ... [2018-06-22 20:34:34,111 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:34" (1/1) ... [2018-06-22 20:34:34,112 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:34" (1/1) ... [2018-06-22 20:34:34,115 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:34" (1/1) ... [2018-06-22 20:34:34,129 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 20:34:34,129 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 20:34:34,129 INFO ]: Initializing RCFGBuilder... [2018-06-22 20:34:34,129 INFO ]: RCFGBuilder initialized [2018-06-22 20:34:34,130 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:34" (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 20:34:34,159 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 20:34:34,159 INFO ]: Found specification of procedure False [2018-06-22 20:34:34,159 INFO ]: Found implementation of procedure False [2018-06-22 20:34:34,159 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 20:34:34,159 INFO ]: Found specification of procedure state [2018-06-22 20:34:34,159 INFO ]: Found implementation of procedure state [2018-06-22 20:34:34,159 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 20:34:34,159 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 20:34:34,159 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 20:34:34,600 INFO ]: Using library mode [2018-06-22 20:34:34,601 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:34:34 BoogieIcfgContainer [2018-06-22 20:34:34,601 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 20:34:34,602 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 20:34:34,602 INFO ]: Initializing TraceAbstraction... [2018-06-22 20:34:34,606 INFO ]: TraceAbstraction initialized [2018-06-22 20:34:34,607 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:34:33" (1/3) ... [2018-06-22 20:34:34,608 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61cdf230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:34:34, skipping insertion in model container [2018-06-22 20:34:34,608 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:34:34" (2/3) ... [2018-06-22 20:34:34,608 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61cdf230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:34:34, skipping insertion in model container [2018-06-22 20:34:34,608 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:34:34" (3/3) ... [2018-06-22 20:34:34,610 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 20:34:34,620 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 20:34:34,629 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 20:34:34,680 INFO ]: Using default assertion order modulation [2018-06-22 20:34:34,680 INFO ]: Interprodecural is true [2018-06-22 20:34:34,680 INFO ]: Hoare is false [2018-06-22 20:34:34,680 INFO ]: Compute interpolants for FPandBP [2018-06-22 20:34:34,680 INFO ]: Backedges is TWOTRACK [2018-06-22 20:34:34,680 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 20:34:34,680 INFO ]: Difference is false [2018-06-22 20:34:34,680 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 20:34:34,680 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 20:34:34,699 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 20:34:34,709 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 20:34:34,709 INFO ]: Found error trace [2018-06-22 20:34:34,710 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:34:34,710 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:34:34,715 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 20:34:34,717 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:34:34,718 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:34:34,765 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:34:34,765 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:34:34,766 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:34:34,899 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:34:35,329 WARN ]: Spent 181.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 5 [2018-06-22 20:34:35,331 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 20:34:35,332 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 20:34:35,332 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 20:34:35,334 INFO ]: Interpolant automaton has 4 states [2018-06-22 20:34:35,344 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 20:34:35,345 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 20:34:35,346 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 20:34:35,454 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:34:35,454 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 20:34:35,457 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 20:34:35,459 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 20:34:35,459 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:34:35,472 INFO ]: With dead ends: 13 [2018-06-22 20:34:35,472 INFO ]: Without dead ends: 13 [2018-06-22 20:34:35,474 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 20:34:35,491 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 20:34:35,531 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 20:34:35,533 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 20:34:35,533 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 20:34:35,535 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 20:34:35,535 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:34:35,535 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 20:34:35,535 INFO ]: Interpolant automaton has 4 states. [2018-06-22 20:34:35,535 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 20:34:35,537 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 20:34:35,537 INFO ]: Found error trace [2018-06-22 20:34:35,537 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:34:35,537 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:34:35,537 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 20:34:35,537 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:34:35,537 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:34:35,538 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:34:35,538 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:34:35,538 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:34:35,632 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:34:36,387 WARN ]: Spent 547.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 22 [2018-06-22 20:34:36,618 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:34:36,619 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:34:36,619 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 20:34:36,625 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:34:36,784 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:34:36,795 INFO ]: Computing forward predicates... [2018-06-22 20:34:37,317 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:37,333 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:34:38,966 WARN ]: Spent 276.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 15 [2018-06-22 20:34:39,059 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:34:39,095 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:34:39,095 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 20:34:39,095 INFO ]: Interpolant automaton has 8 states [2018-06-22 20:34:39,096 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 20:34:39,096 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 20:34:39,096 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 20:34:39,258 WARN ]: Spent 110.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2018-06-22 20:34:39,413 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:34:39,413 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 20:34:39,414 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 20:34:39,414 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 20:34:39,414 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:34:39,415 INFO ]: With dead ends: 15 [2018-06-22 20:34:39,415 INFO ]: Without dead ends: 15 [2018-06-22 20:34:39,416 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-06-22 20:34:39,416 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 20:34:39,418 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 20:34:39,418 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 20:34:39,421 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 20:34:39,421 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 20:34:39,421 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:34:39,421 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 20:34:39,421 INFO ]: Interpolant automaton has 8 states. [2018-06-22 20:34:39,421 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 20:34:39,422 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 20:34:39,422 INFO ]: Found error trace [2018-06-22 20:34:39,422 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:34:39,422 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:34:39,422 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 20:34:39,422 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:34:39,422 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:34:39,423 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:34:39,423 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:34:39,423 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:34:39,546 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:34:39,920 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 20:34:39,920 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:34:39,920 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 20:34:39,936 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 20:34:40,107 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 20:34:40,107 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:34:40,114 INFO ]: Computing forward predicates... [2018-06-22 20:34:40,149 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:34:40,153 WARN ]: expecting exponential blowup for input size 18 Received shutdown request... [2018-06-22 20:35:34,406 INFO ]: Timeout while computing interpolants [2018-06-22 20:35:34,607 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 20:35:34,608 WARN ]: Verification canceled [2018-06-22 20:35:34,611 WARN ]: Timeout [2018-06-22 20:35:34,611 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:35:34 BoogieIcfgContainer [2018-06-22 20:35:34,611 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 20:35:34,612 INFO ]: Toolchain (without parser) took 60692.09 ms. Allocated memory was 305.1 MB in the beginning and 3.6 GB in the end (delta: 3.3 GB). Free memory was 235.6 MB in the beginning and 1.6 GB in the end (delta: -1.3 GB). Peak memory consumption was 3.2 GB. Max. memory is 3.6 GB. [2018-06-22 20:35:34,613 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 305.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 20:35:34,613 INFO ]: ChcToBoogie took 79.66 ms. Allocated memory is still 305.1 MB. Free memory was 235.6 MB in the beginning and 231.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:35:34,614 INFO ]: Boogie Preprocessor took 123.76 ms. Allocated memory is still 305.1 MB. Free memory was 231.6 MB in the beginning and 229.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:35:34,614 INFO ]: RCFGBuilder took 471.93 ms. Allocated memory is still 305.1 MB. Free memory was 229.6 MB in the beginning and 197.7 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:35:34,615 INFO ]: TraceAbstraction took 60008.89 ms. Allocated memory was 305.1 MB in the beginning and 3.6 GB in the end (delta: 3.3 GB). Free memory was 197.7 MB in the beginning and 1.6 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.2 GB. Max. memory is 3.6 GB. [2018-06-22 20:35:34,619 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 305.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 79.66 ms. Allocated memory is still 305.1 MB. Free memory was 235.6 MB in the beginning and 231.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 123.76 ms. Allocated memory is still 305.1 MB. Free memory was 231.6 MB in the beginning and 229.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 471.93 ms. Allocated memory is still 305.1 MB. Free memory was 229.6 MB in the beginning and 197.7 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 60008.89 ms. Allocated memory was 305.1 MB in the beginning and 3.6 GB in the end (delta: 3.3 GB). Free memory was 197.7 MB in the beginning and 1.6 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.2 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was transforming 18 conjuction. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 59.9s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 7 SDslu, 41 SDs, 0 SdLazy, 27 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.6s 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, 0.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1468 SizeOfPredicates, 30 NumberOfNonLiveVariables, 617 ConjunctsInSsa, 42 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/ticket3i_4.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_20-35-34-629.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ticket3i_4.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_20-35-34-629.csv Completed graceful shutdown