java -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/chccomp2018/chcToBoogie_automizer.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/speed2_e8_449_e8_517.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 16:37:08,730 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 16:37:08,732 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 16:37:08,745 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 16:37:08,746 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 16:37:08,747 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 16:37:08,748 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 16:37:08,749 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 16:37:08,751 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 16:37:08,753 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 16:37:08,754 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 16:37:08,754 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 16:37:08,755 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 16:37:08,756 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 16:37:08,756 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 16:37:08,760 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 16:37:08,762 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 16:37:08,775 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 16:37:08,777 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 16:37:08,778 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 16:37:08,779 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 16:37:08,781 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 16:37:08,781 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 16:37:08,781 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 16:37:08,782 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 16:37:08,786 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 16:37:08,787 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 16:37:08,788 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 16:37:08,789 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 16:37:08,789 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 16:37:08,793 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 16:37:08,794 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 16:37:08,794 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 16:37:08,795 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 16:37:08,795 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 16:37:08,795 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 16:37:08,815 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 16:37:08,815 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 16:37:08,816 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 16:37:08,816 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 16:37:08,817 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 16:37:08,817 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 16:37:08,818 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 16:37:08,818 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 16:37:08,819 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 16:37:08,819 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 16:37:08,819 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 16:37:08,819 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 16:37:08,819 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 16:37:08,820 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 16:37:08,820 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 16:37:08,820 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 16:37:08,820 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 16:37:08,821 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 16:37:08,823 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 16:37:08,874 INFO ]: Repository-Root is: /tmp [2018-06-18 16:37:08,892 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 16:37:08,897 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 16:37:08,898 INFO ]: Initializing SmtParser... [2018-06-18 16:37:08,898 INFO ]: SmtParser initialized [2018-06-18 16:37:08,899 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/speed2_e8_449_e8_517.smt2 [2018-06-18 16:37:08,901 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 [2018-06-18 16:37:08,989 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/speed2_e8_449_e8_517.smt2 unknown [2018-06-18 16:37:09,240 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/speed2_e8_449_e8_517.smt2 [2018-06-18 16:37:09,245 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 16:37:09,251 INFO ]: Walking toolchain with 4 elements. [2018-06-18 16:37:09,252 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 16:37:09,252 INFO ]: Initializing ChcToBoogie... [2018-06-18 16:37:09,252 INFO ]: ChcToBoogie initialized [2018-06-18 16:37:09,259 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 04:37:09" (1/1) ... [2018-06-18 16:37:09,308 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:09 Unit [2018-06-18 16:37:09,308 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 16:37:09,309 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 16:37:09,309 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 16:37:09,309 INFO ]: Boogie Preprocessor initialized [2018-06-18 16:37:09,332 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:09" (1/1) ... [2018-06-18 16:37:09,332 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:09" (1/1) ... [2018-06-18 16:37:09,343 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:09" (1/1) ... [2018-06-18 16:37:09,344 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:09" (1/1) ... [2018-06-18 16:37:09,358 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:09" (1/1) ... [2018-06-18 16:37:09,359 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:09" (1/1) ... [2018-06-18 16:37:09,360 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:09" (1/1) ... [2018-06-18 16:37:09,362 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 16:37:09,363 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 16:37:09,363 INFO ]: Initializing RCFGBuilder... [2018-06-18 16:37:09,363 INFO ]: RCFGBuilder initialized [2018-06-18 16:37:09,364 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:09" (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) [2018-06-18 16:37:09,393 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 16:37:09,393 INFO ]: Found specification of procedure False [2018-06-18 16:37:09,393 INFO ]: Found implementation of procedure False [2018-06-18 16:37:09,393 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 16:37:09,393 INFO ]: Found specification of procedure state [2018-06-18 16:37:09,393 INFO ]: Found implementation of procedure state [2018-06-18 16:37:09,393 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 16:37:09,393 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 16:37:09,393 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 [2018-06-18 16:37:09,574 INFO ]: Using library mode [2018-06-18 16:37:09,575 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 04:37:09 BoogieIcfgContainer [2018-06-18 16:37:09,575 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 16:37:09,576 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 16:37:09,576 INFO ]: Initializing TraceAbstraction... [2018-06-18 16:37:09,579 INFO ]: TraceAbstraction initialized [2018-06-18 16:37:09,579 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 04:37:09" (1/3) ... [2018-06-18 16:37:09,580 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707fe4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 04:37:09, skipping insertion in model container [2018-06-18 16:37:09,581 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:37:09" (2/3) ... [2018-06-18 16:37:09,581 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707fe4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 04:37:09, skipping insertion in model container [2018-06-18 16:37:09,581 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 04:37:09" (3/3) ... [2018-06-18 16:37:09,583 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 16:37:09,593 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 16:37:09,601 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 16:37:09,638 INFO ]: Using default assertion order modulation [2018-06-18 16:37:09,639 INFO ]: Interprodecural is true [2018-06-18 16:37:09,639 INFO ]: Hoare is false [2018-06-18 16:37:09,639 INFO ]: Compute interpolants for FPandBP [2018-06-18 16:37:09,639 INFO ]: Backedges is TWOTRACK [2018-06-18 16:37:09,639 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 16:37:09,639 INFO ]: Difference is false [2018-06-18 16:37:09,639 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 16:37:09,639 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 16:37:09,651 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 16:37:09,661 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 16:37:09,661 INFO ]: Found error trace [2018-06-18 16:37:09,662 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:37:09,663 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:37:09,669 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-18 16:37:09,671 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:37:09,672 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:37:09,709 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:37:09,709 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:37:09,709 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:37:09,763 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:37:09,773 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:37:09,992 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 16:37:10,003 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 16:37:10,004 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 16:37:10,006 INFO ]: Interpolant automaton has 4 states [2018-06-18 16:37:10,022 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 16:37:10,023 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 16:37:10,025 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 16:37:10,120 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:37:10,120 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 16:37:10,120 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 16:37:10,122 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 16:37:10,122 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:37:10,135 INFO ]: With dead ends: 13 [2018-06-18 16:37:10,135 INFO ]: Without dead ends: 13 [2018-06-18 16:37:10,137 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 16:37:10,150 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 16:37:10,169 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 16:37:10,173 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 16:37:10,173 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 16:37:10,174 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 16:37:10,175 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:37:10,175 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 16:37:10,175 INFO ]: Interpolant automaton has 4 states. [2018-06-18 16:37:10,175 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 16:37:10,176 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 16:37:10,176 INFO ]: Found error trace [2018-06-18 16:37:10,176 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:37:10,176 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:37:10,176 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-18 16:37:10,176 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:37:10,176 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:37:10,177 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:37:10,177 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:37:10,177 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:37:10,234 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:37:10,234 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:37:11,791 WARN ]: Spent 1.22 s on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2018-06-18 16:37:12,159 WARN ]: Spent 354.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2018-06-18 16:37:12,391 WARN ]: Spent 120.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 11 [2018-06-18 16:37:12,394 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 16:37:12,394 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:37:12,394 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 [2018-06-18 16:37:12,402 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:37:12,438 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:37:12,445 INFO ]: Computing forward predicates... [2018-06-18 16:37:12,610 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:37:12,625 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:37:12,635 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:37:12,649 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:37:12,656 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:37:12,666 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:37:14,610 WARN ]: Spent 315.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2018-06-18 16:37:14,735 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 16:37:14,757 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:37:14,757 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-18 16:37:14,758 INFO ]: Interpolant automaton has 9 states [2018-06-18 16:37:14,758 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-18 16:37:14,758 INFO ]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-06-18 16:37:14,758 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-18 16:37:15,134 WARN ]: Spent 274.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2018-06-18 16:37:15,416 WARN ]: Spent 199.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2018-06-18 16:37:15,463 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:37:15,464 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 16:37:15,464 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 16:37:15,464 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-18 16:37:15,464 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:37:15,465 INFO ]: With dead ends: 15 [2018-06-18 16:37:15,465 INFO ]: Without dead ends: 15 [2018-06-18 16:37:15,466 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-06-18 16:37:15,466 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 16:37:15,468 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 16:37:15,468 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 16:37:15,469 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 16:37:15,469 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 16:37:15,469 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:37:15,469 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 16:37:15,469 INFO ]: Interpolant automaton has 9 states. [2018-06-18 16:37:15,469 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 16:37:15,470 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 16:37:15,470 INFO ]: Found error trace [2018-06-18 16:37:15,470 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:37:15,470 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:37:15,470 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-18 16:37:15,470 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:37:15,470 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:37:15,471 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:37:15,471 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:37:15,471 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:37:15,518 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:37:15,519 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:37:15,823 WARN ]: Spent 164.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-06-18 16:37:16,049 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 16:37:16,049 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:37:16,049 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 [2018-06-18 16:37:16,068 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 16:37:16,129 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 16:37:16,129 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:37:16,134 INFO ]: Computing forward predicates... [2018-06-18 16:37:17,589 WARN ]: Spent 489.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 45 [2018-06-18 16:37:18,115 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 16:37:18,150 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:37:18,150 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-18 16:37:18,150 INFO ]: Interpolant automaton has 13 states [2018-06-18 16:37:18,150 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-18 16:37:18,151 INFO ]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-06-18 16:37:18,151 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-18 16:37:18,406 WARN ]: Spent 160.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2018-06-18 16:37:19,010 WARN ]: Spent 517.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 103 [2018-06-18 16:37:19,356 WARN ]: Spent 235.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 67 [2018-06-18 16:37:19,369 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:37:19,369 INFO ]: Finished difference Result 11 states and 12 transitions. [2018-06-18 16:37:19,371 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 16:37:19,371 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-18 16:37:19,371 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:37:19,371 INFO ]: With dead ends: 11 [2018-06-18 16:37:19,371 INFO ]: Without dead ends: 0 [2018-06-18 16:37:19,372 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2018-06-18 16:37:19,372 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-18 16:37:19,372 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-18 16:37:19,372 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-18 16:37:19,372 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-18 16:37:19,372 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-06-18 16:37:19,372 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:37:19,372 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-18 16:37:19,372 INFO ]: Interpolant automaton has 13 states. [2018-06-18 16:37:19,372 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-18 16:37:19,372 INFO ]: Finished isEmpty. No accepting run. [2018-06-18 16:37:19,377 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 04:37:19 BoogieIcfgContainer [2018-06-18 16:37:19,377 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 16:37:19,378 INFO ]: Toolchain (without parser) took 10132.64 ms. Allocated memory was 307.8 MB in the beginning and 459.3 MB in the end (delta: 151.5 MB). Free memory was 260.3 MB in the beginning and 412.5 MB in the end (delta: -152.2 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 16:37:19,379 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 307.8 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 16:37:19,379 INFO ]: ChcToBoogie took 57.00 ms. Allocated memory is still 307.8 MB. Free memory was 260.3 MB in the beginning and 257.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-18 16:37:19,380 INFO ]: Boogie Preprocessor took 53.07 ms. Allocated memory is still 307.8 MB. Free memory was 257.3 MB in the beginning and 256.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. [2018-06-18 16:37:19,380 INFO ]: RCFGBuilder took 212.23 ms. Allocated memory is still 307.8 MB. Free memory was 256.3 MB in the beginning and 244.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 3.6 GB. [2018-06-18 16:37:19,381 INFO ]: TraceAbstraction took 9801.39 ms. Allocated memory was 307.8 MB in the beginning and 459.3 MB in the end (delta: 151.5 MB). Free memory was 244.2 MB in the beginning and 412.5 MB in the end (delta: -168.3 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 16:37:19,383 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 307.8 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 57.00 ms. Allocated memory is still 307.8 MB. Free memory was 260.3 MB in the beginning and 257.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 53.07 ms. Allocated memory is still 307.8 MB. Free memory was 257.3 MB in the beginning and 256.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 212.23 ms. Allocated memory is still 307.8 MB. Free memory was 256.3 MB in the beginning and 244.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 9801.39 ms. Allocated memory was 307.8 MB in the beginning and 459.3 MB in the end (delta: 151.5 MB). Free memory was 244.2 MB in the beginning and 412.5 MB in the end (delta: -168.3 MB). There was no memory consumed. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. SAFE Result, 9.7s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 2.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 10 SDslu, 92 SDs, 0 SdLazy, 81 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5.3s 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 15224 SizeOfPredicates, 78 NumberOfNonLiveVariables, 393 ConjunctsInSsa, 133 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 8/26 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/speed2_e8_449_e8_517.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_16-37-19-394.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/speed2_e8_449_e8_517.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_16-37-19-394.csv Received shutdown request...