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/rtp_2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:46:48,103 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:46:48,106 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:46:48,120 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:46:48,120 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:46:48,121 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:46:48,122 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:46:48,124 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:46:48,125 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:46:48,126 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:46:48,128 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:46:48,128 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:46:48,129 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:46:48,130 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:46:48,130 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:46:48,133 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:46:48,135 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:46:48,143 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:46:48,145 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:46:48,145 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:46:48,146 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:46:48,152 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:46:48,152 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:46:48,152 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:46:48,153 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:46:48,154 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:46:48,158 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:46:48,158 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:46:48,159 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:46:48,159 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:46:48,160 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:46:48,161 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:46:48,164 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:46:48,165 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:46:48,166 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:46:48,166 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 19:46:48,186 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:46:48,187 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:46:48,187 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:46:48,187 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:46:48,188 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:46:48,188 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:46:48,188 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:46:48,189 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:46:48,189 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:46:48,189 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:46:48,189 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:46:48,189 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:46:48,190 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:46:48,190 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:46:48,190 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:46:48,191 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:46:48,191 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:46:48,191 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:46:48,191 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:46:48,192 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:46:48,194 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:46:48,242 INFO ]: Repository-Root is: /tmp [2018-06-22 19:46:48,256 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:46:48,261 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:46:48,262 INFO ]: Initializing SmtParser... [2018-06-22 19:46:48,263 INFO ]: SmtParser initialized [2018-06-22 19:46:48,263 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/rtp_2.smt2 [2018-06-22 19:46:48,265 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 19:46:48,354 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/rtp_2.smt2 unknown [2018-06-22 19:46:49,034 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/rtp_2.smt2 [2018-06-22 19:46:49,039 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:46:49,046 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:46:49,047 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:46:49,047 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:46:49,047 INFO ]: ChcToBoogie initialized [2018-06-22 19:46:49,050 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:46:49" (1/1) ... [2018-06-22 19:46:49,125 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:49 Unit [2018-06-22 19:46:49,125 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:46:49,126 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:46:49,126 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:46:49,126 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:46:49,150 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:49" (1/1) ... [2018-06-22 19:46:49,150 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:49" (1/1) ... [2018-06-22 19:46:49,172 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:49" (1/1) ... [2018-06-22 19:46:49,172 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:49" (1/1) ... [2018-06-22 19:46:49,181 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:49" (1/1) ... [2018-06-22 19:46:49,182 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:49" (1/1) ... [2018-06-22 19:46:49,186 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:49" (1/1) ... [2018-06-22 19:46:49,191 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:46:49,191 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:46:49,191 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:46:49,191 INFO ]: RCFGBuilder initialized [2018-06-22 19:46:49,192 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:49" (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 19:46:49,220 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:46:49,220 INFO ]: Found specification of procedure False [2018-06-22 19:46:49,220 INFO ]: Found implementation of procedure False [2018-06-22 19:46:49,220 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:46:49,221 INFO ]: Found specification of procedure state [2018-06-22 19:46:49,221 INFO ]: Found implementation of procedure state [2018-06-22 19:46:49,221 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:46:49,221 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:46:49,221 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 19:46:49,756 INFO ]: Using library mode [2018-06-22 19:46:49,758 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:46:49 BoogieIcfgContainer [2018-06-22 19:46:49,758 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:46:49,759 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:46:49,759 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:46:49,765 INFO ]: TraceAbstraction initialized [2018-06-22 19:46:49,766 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:46:49" (1/3) ... [2018-06-22 19:46:49,766 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f20f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:46:49, skipping insertion in model container [2018-06-22 19:46:49,766 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:49" (2/3) ... [2018-06-22 19:46:49,767 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f20f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:46:49, skipping insertion in model container [2018-06-22 19:46:49,767 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:46:49" (3/3) ... [2018-06-22 19:46:49,769 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:46:49,780 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:46:49,790 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:46:49,839 INFO ]: Using default assertion order modulation [2018-06-22 19:46:49,840 INFO ]: Interprodecural is true [2018-06-22 19:46:49,840 INFO ]: Hoare is false [2018-06-22 19:46:49,840 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:46:49,840 INFO ]: Backedges is TWOTRACK [2018-06-22 19:46:49,840 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:46:49,840 INFO ]: Difference is false [2018-06-22 19:46:49,840 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:46:49,840 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:46:49,857 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:46:49,871 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:46:49,871 INFO ]: Found error trace [2018-06-22 19:46:49,872 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:46:49,872 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:46:49,878 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 19:46:49,880 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:46:49,880 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:46:49,927 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:46:49,927 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:46:49,927 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:46:50,066 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:46:50,429 WARN ]: Spent 117.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 7 [2018-06-22 19:46:50,432 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:46:50,434 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:46:50,434 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:46:50,436 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:46:50,446 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:46:50,446 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:46:50,448 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:46:50,617 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:46:50,617 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:46:50,618 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:46:50,620 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:46:50,620 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:46:50,636 INFO ]: With dead ends: 13 [2018-06-22 19:46:50,636 INFO ]: Without dead ends: 13 [2018-06-22 19:46:50,638 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 19:46:50,659 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:46:50,696 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:46:50,697 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:46:50,697 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:46:50,699 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:46:50,699 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:46:50,699 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:46:50,699 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:46:50,699 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:46:50,701 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:46:50,701 INFO ]: Found error trace [2018-06-22 19:46:50,701 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:46:50,701 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:46:50,701 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 19:46:50,701 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:46:50,701 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:46:50,702 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:46:50,702 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:46:50,702 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:46:50,813 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:46:51,315 WARN ]: Spent 264.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 14 [2018-06-22 19:46:51,429 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:46:51,429 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:46:51,429 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 19:46:51,438 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:46:51,633 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:46:51,646 INFO ]: Computing forward predicates... [2018-06-22 19:46:52,228 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:46:52,263 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:46:52,264 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:46:52,264 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:46:52,264 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:46:52,264 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:46:52,265 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:46:52,865 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:46:52,865 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:46:52,869 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:46:52,869 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:46:52,869 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:46:52,869 INFO ]: With dead ends: 15 [2018-06-22 19:46:52,869 INFO ]: Without dead ends: 15 [2018-06-22 19:46:52,870 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 19:46:52,870 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:46:52,873 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:46:52,873 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:46:52,873 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:46:52,873 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:46:52,873 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:46:52,873 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:46:52,874 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:46:52,874 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:46:52,874 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:46:52,874 INFO ]: Found error trace [2018-06-22 19:46:52,874 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:46:52,874 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:46:52,874 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 19:46:52,874 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:46:52,874 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:46:52,876 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:46:52,876 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:46:52,876 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:46:52,998 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:46:53,320 WARN ]: Spent 138.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2018-06-22 19:46:53,512 WARN ]: Spent 184.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 22 [2018-06-22 19:46:53,580 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:46:53,580 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:46:53,580 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 19:46:53,591 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:46:53,805 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:46:53,805 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:46:53,812 INFO ]: Computing forward predicates... [2018-06-22 19:46:54,052 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:46:54,079 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:46:54,080 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 19:46:54,080 INFO ]: Interpolant automaton has 12 states [2018-06-22 19:46:54,080 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 19:46:54,080 INFO ]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-06-22 19:46:54,080 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 19:46:54,263 WARN ]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-06-22 19:46:54,473 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:46:54,473 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:46:54,474 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:46:54,474 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 19:46:54,474 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:46:54,475 INFO ]: With dead ends: 17 [2018-06-22 19:46:54,475 INFO ]: Without dead ends: 17 [2018-06-22 19:46:54,475 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:46:54,475 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:46:54,478 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:46:54,478 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:46:54,479 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:46:54,479 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:46:54,479 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:46:54,479 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:46:54,479 INFO ]: Interpolant automaton has 12 states. [2018-06-22 19:46:54,479 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:46:54,480 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:46:54,480 INFO ]: Found error trace [2018-06-22 19:46:54,480 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:46:54,480 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:46:54,480 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 19:46:54,480 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:46:54,480 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:46:54,481 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:46:54,481 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:46:54,481 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:46:54,603 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:46:55,069 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:46:55,069 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:46:55,069 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:46:55,084 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 19:46:55,343 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:46:55,343 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:46:55,378 INFO ]: Computing forward predicates... [2018-06-22 19:46:55,774 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:46:55,796 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:46:55,796 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-22 19:46:55,796 INFO ]: Interpolant automaton has 16 states [2018-06-22 19:46:55,796 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 19:46:55,796 INFO ]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:46:55,796 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-22 19:46:56,004 WARN ]: Spent 154.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2018-06-22 19:46:56,154 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2018-06-22 19:46:56,301 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:46:56,301 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:46:56,302 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:46:56,302 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-22 19:46:56,302 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:46:56,302 INFO ]: With dead ends: 13 [2018-06-22 19:46:56,302 INFO ]: Without dead ends: 0 [2018-06-22 19:46:56,303 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-06-22 19:46:56,303 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 19:46:56,303 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 19:46:56,303 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 19:46:56,303 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 19:46:56,303 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 19:46:56,303 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:46:56,303 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 19:46:56,303 INFO ]: Interpolant automaton has 16 states. [2018-06-22 19:46:56,303 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 19:46:56,303 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 19:46:56,308 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:46:56 BoogieIcfgContainer [2018-06-22 19:46:56,308 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:46:56,309 INFO ]: Toolchain (without parser) took 7269.87 ms. Allocated memory was 308.8 MB in the beginning and 393.7 MB in the end (delta: 84.9 MB). Free memory was 233.3 MB in the beginning and 232.9 MB in the end (delta: 405.7 kB). Peak memory consumption was 85.3 MB. Max. memory is 3.6 GB. [2018-06-22 19:46:56,310 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:46:56,310 INFO ]: ChcToBoogie took 78.87 ms. Allocated memory is still 308.8 MB. Free memory was 233.3 MB in the beginning and 230.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:46:56,311 INFO ]: Boogie Preprocessor took 64.95 ms. Allocated memory is still 308.8 MB. Free memory was 230.3 MB in the beginning and 228.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:46:56,311 INFO ]: RCFGBuilder took 566.82 ms. Allocated memory was 308.8 MB in the beginning and 325.1 MB in the end (delta: 16.3 MB). Free memory was 228.3 MB in the beginning and 296.4 MB in the end (delta: -68.1 MB). Peak memory consumption was 46.3 MB. Max. memory is 3.6 GB. [2018-06-22 19:46:56,312 INFO ]: TraceAbstraction took 6549.30 ms. Allocated memory was 325.1 MB in the beginning and 393.7 MB in the end (delta: 68.7 MB). Free memory was 295.2 MB in the beginning and 232.9 MB in the end (delta: 62.3 MB). Peak memory consumption was 131.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:46:56,314 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 78.87 ms. Allocated memory is still 308.8 MB. Free memory was 233.3 MB in the beginning and 230.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 64.95 ms. Allocated memory is still 308.8 MB. Free memory was 230.3 MB in the beginning and 228.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 566.82 ms. Allocated memory was 308.8 MB in the beginning and 325.1 MB in the end (delta: 16.3 MB). Free memory was 228.3 MB in the beginning and 296.4 MB in the end (delta: -68.1 MB). Peak memory consumption was 46.3 MB. Max. memory is 3.6 GB. * TraceAbstraction took 6549.30 ms. Allocated memory was 325.1 MB in the beginning and 393.7 MB in the end (delta: 68.7 MB). Free memory was 295.2 MB in the beginning and 232.9 MB in the end (delta: 62.3 MB). Peak memory consumption was 131.0 MB. 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, 6.4s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 SDtfs, 33 SDslu, 126 SDs, 0 SdLazy, 114 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 10800 SizeOfPredicates, 52 NumberOfNonLiveVariables, 3477 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 20/68 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/rtp_2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-46-56-337.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rtp_2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-46-56-337.csv Received shutdown request...