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/metros_1_e2_1102_e1_317.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:03:24,136 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:03:24,140 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:03:24,157 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:03:24,157 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:03:24,158 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:03:24,160 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:03:24,163 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:03:24,164 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:03:24,166 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:03:24,167 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:03:24,168 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:03:24,169 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:03:24,172 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:03:24,173 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:03:24,173 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:03:24,179 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:03:24,181 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:03:24,193 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:03:24,194 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:03:24,196 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:03:24,198 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:03:24,199 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:03:24,199 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:03:24,204 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:03:24,206 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:03:24,207 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:03:24,208 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:03:24,210 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:03:24,210 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:03:24,217 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:03:24,218 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:03:24,218 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:03:24,219 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:03:24,219 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:03:24,220 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 19:03:24,243 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:03:24,243 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:03:24,243 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:03:24,244 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:03:24,245 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:03:24,246 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:03:24,246 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:03:24,246 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:03:24,247 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:03:24,247 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:03:24,247 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:03:24,247 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:03:24,247 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:03:24,248 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:03:24,248 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:03:24,248 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:03:24,248 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:03:24,248 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:03:24,249 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:03:24,251 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:03:24,251 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:03:24,314 INFO ]: Repository-Root is: /tmp [2018-06-22 19:03:24,332 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:03:24,339 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:03:24,341 INFO ]: Initializing SmtParser... [2018-06-22 19:03:24,341 INFO ]: SmtParser initialized [2018-06-22 19:03:24,342 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e1_317.smt2 [2018-06-22 19:03:24,344 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 19:03:24,443 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e1_317.smt2 unknown [2018-06-22 19:03:24,966 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e1_317.smt2 [2018-06-22 19:03:24,971 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:03:24,980 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:03:24,981 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:03:24,981 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:03:24,981 INFO ]: ChcToBoogie initialized [2018-06-22 19:03:24,985 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:03:24" (1/1) ... [2018-06-22 19:03:25,089 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:25 Unit [2018-06-22 19:03:25,089 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:03:25,098 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:03:25,098 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:03:25,098 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:03:25,125 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:25" (1/1) ... [2018-06-22 19:03:25,125 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:25" (1/1) ... [2018-06-22 19:03:25,139 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:25" (1/1) ... [2018-06-22 19:03:25,139 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:25" (1/1) ... [2018-06-22 19:03:25,148 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:25" (1/1) ... [2018-06-22 19:03:25,150 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:25" (1/1) ... [2018-06-22 19:03:25,152 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:25" (1/1) ... [2018-06-22 19:03:25,156 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:03:25,157 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:03:25,157 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:03:25,157 INFO ]: RCFGBuilder initialized [2018-06-22 19:03:25,158 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:25" (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 19:03:25,201 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:03:25,201 INFO ]: Found specification of procedure False [2018-06-22 19:03:25,201 INFO ]: Found implementation of procedure False [2018-06-22 19:03:25,201 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:03:25,201 INFO ]: Found specification of procedure state [2018-06-22 19:03:25,201 INFO ]: Found implementation of procedure state [2018-06-22 19:03:25,202 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:03:25,202 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:03:25,202 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 19:03:25,604 INFO ]: Using library mode [2018-06-22 19:03:25,605 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:03:25 BoogieIcfgContainer [2018-06-22 19:03:25,605 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:03:25,608 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:03:25,608 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:03:25,611 INFO ]: TraceAbstraction initialized [2018-06-22 19:03:25,612 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:03:24" (1/3) ... [2018-06-22 19:03:25,613 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d14492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:03:25, skipping insertion in model container [2018-06-22 19:03:25,613 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:25" (2/3) ... [2018-06-22 19:03:25,613 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d14492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:03:25, skipping insertion in model container [2018-06-22 19:03:25,613 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:03:25" (3/3) ... [2018-06-22 19:03:25,615 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:03:25,627 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:03:25,638 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:03:25,690 INFO ]: Using default assertion order modulation [2018-06-22 19:03:25,691 INFO ]: Interprodecural is true [2018-06-22 19:03:25,691 INFO ]: Hoare is false [2018-06-22 19:03:25,691 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:03:25,691 INFO ]: Backedges is TWOTRACK [2018-06-22 19:03:25,691 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:03:25,691 INFO ]: Difference is false [2018-06-22 19:03:25,691 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:03:25,691 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:03:25,713 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:03:25,735 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:03:25,735 INFO ]: Found error trace [2018-06-22 19:03:25,736 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:03:25,737 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:03:25,743 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 19:03:25,745 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:03:25,745 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:03:25,782 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:03:25,782 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:03:25,782 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:03:25,910 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:03:26,136 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:03:26,140 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:03:26,140 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:03:26,142 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:03:26,166 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:03:26,166 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:03:26,177 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:03:26,297 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:03:26,297 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:03:26,297 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:03:26,298 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:03:26,299 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:03:26,310 INFO ]: With dead ends: 13 [2018-06-22 19:03:26,310 INFO ]: Without dead ends: 13 [2018-06-22 19:03:26,312 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 [2018-06-22 19:03:26,327 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:03:26,367 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:03:26,368 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:03:26,369 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:03:26,370 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:03:26,370 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:03:26,370 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:03:26,370 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:03:26,370 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:03:26,372 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:03:26,372 INFO ]: Found error trace [2018-06-22 19:03:26,372 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:03:26,372 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:03:26,372 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 19:03:26,372 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:03:26,372 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:03:26,373 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:03:26,373 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:03:26,373 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:03:26,464 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:03:26,903 WARN ]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 19:03:27,172 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:03:27,172 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:03:27,172 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 19:03:27,185 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:03:27,293 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:03:27,304 INFO ]: Computing forward predicates... [2018-06-22 19:03:27,689 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:03:27,715 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:03:27,715 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:03:27,716 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:03:27,716 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:03:27,716 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:03:27,716 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:03:28,226 WARN ]: Spent 261.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-06-22 19:03:28,387 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:03:28,387 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:03:28,388 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:03:28,388 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:03:28,389 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:03:28,389 INFO ]: With dead ends: 15 [2018-06-22 19:03:28,389 INFO ]: Without dead ends: 15 [2018-06-22 19:03:28,390 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 19:03:28,390 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:03:28,393 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:03:28,394 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:03:28,394 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:03:28,394 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:03:28,394 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:03:28,394 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:03:28,394 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:03:28,394 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:03:28,395 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:03:28,395 INFO ]: Found error trace [2018-06-22 19:03:28,395 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:03:28,395 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:03:28,395 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 19:03:28,395 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:03:28,395 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:03:28,398 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:03:28,398 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:03:28,398 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:03:28,475 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:03:29,066 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:03:29,066 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:03:29,066 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 19:03:29,072 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:03:29,231 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:03:29,231 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:03:29,238 INFO ]: Computing forward predicates... [2018-06-22 19:03:29,621 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 5 [2018-06-22 19:03:29,775 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:03:29,802 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:03:29,802 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 19:03:29,802 INFO ]: Interpolant automaton has 12 states [2018-06-22 19:03:29,802 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 19:03:29,804 INFO ]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-06-22 19:03:29,804 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 19:03:30,182 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:03:30,182 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:03:30,183 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:03:30,183 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 19:03:30,183 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:03:30,184 INFO ]: With dead ends: 17 [2018-06-22 19:03:30,184 INFO ]: Without dead ends: 17 [2018-06-22 19:03:30,184 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:03:30,184 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:03:30,187 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:03:30,187 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:03:30,188 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:03:30,188 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:03:30,188 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:03:30,188 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:03:30,188 INFO ]: Interpolant automaton has 12 states. [2018-06-22 19:03:30,188 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:03:30,189 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:03:30,189 INFO ]: Found error trace [2018-06-22 19:03:30,189 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:03:30,189 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:03:30,189 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 19:03:30,189 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:03:30,189 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:03:30,190 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:03:30,190 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:03:30,190 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:03:30,263 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:03:30,585 WARN ]: Spent 126.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-06-22 19:03:30,851 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:03:30,851 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:03:30,851 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 19:03:30,858 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 19:03:31,027 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:03:31,027 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:03:31,034 INFO ]: Computing forward predicates... [2018-06-22 19:03:31,577 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:03:31,596 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:03:31,612 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:03:31,652 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:03:31,666 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:03:31,677 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:03:33,703 WARN ]: Spent 1.26 s on a formula simplification. DAG size of input: 165 DAG size of output: 66 [2018-06-22 19:03:33,949 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:03:33,971 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:03:33,971 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-22 19:03:33,972 INFO ]: Interpolant automaton has 16 states [2018-06-22 19:03:33,972 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 19:03:33,972 INFO ]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:03:33,972 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-22 19:03:34,669 WARN ]: Spent 637.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 137 [2018-06-22 19:03:35,044 WARN ]: Spent 282.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 89 [2018-06-22 19:03:36,044 WARN ]: Spent 952.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 109 [2018-06-22 19:03:36,654 WARN ]: Spent 566.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 137 [2018-06-22 19:03:36,674 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:03:36,675 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:03:36,675 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 19:03:36,675 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-22 19:03:36,675 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:03:36,675 INFO ]: With dead ends: 13 [2018-06-22 19:03:36,675 INFO ]: Without dead ends: 0 [2018-06-22 19:03:36,676 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2018-06-22 19:03:36,676 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 19:03:36,676 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 19:03:36,676 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 19:03:36,676 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 19:03:36,676 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 19:03:36,676 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:03:36,676 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 19:03:36,676 INFO ]: Interpolant automaton has 16 states. [2018-06-22 19:03:36,676 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 19:03:36,676 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 19:03:36,680 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:03:36 BoogieIcfgContainer [2018-06-22 19:03:36,680 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:03:36,681 INFO ]: Toolchain (without parser) took 11709.01 ms. Allocated memory was 303.6 MB in the beginning and 529.5 MB in the end (delta: 226.0 MB). Free memory was 245.1 MB in the beginning and 310.5 MB in the end (delta: -65.3 MB). Peak memory consumption was 160.6 MB. Max. memory is 3.6 GB. [2018-06-22 19:03:36,681 INFO ]: SmtParser took 0.13 ms. Allocated memory is still 303.6 MB. Free memory is still 269.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:03:36,681 INFO ]: ChcToBoogie took 117.05 ms. Allocated memory is still 303.6 MB. Free memory was 244.1 MB in the beginning and 242.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:03:36,682 INFO ]: Boogie Preprocessor took 57.86 ms. Allocated memory is still 303.6 MB. Free memory was 242.1 MB in the beginning and 240.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:03:36,682 INFO ]: RCFGBuilder took 448.31 ms. Allocated memory is still 303.6 MB. Free memory was 240.2 MB in the beginning and 216.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 3.6 GB. [2018-06-22 19:03:36,683 INFO ]: TraceAbstraction took 11072.42 ms. Allocated memory was 303.6 MB in the beginning and 529.5 MB in the end (delta: 226.0 MB). Free memory was 215.0 MB in the beginning and 310.5 MB in the end (delta: -95.4 MB). Peak memory consumption was 130.5 MB. Max. memory is 3.6 GB. [2018-06-22 19:03:36,685 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.13 ms. Allocated memory is still 303.6 MB. Free memory is still 269.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 117.05 ms. Allocated memory is still 303.6 MB. Free memory was 244.1 MB in the beginning and 242.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 57.86 ms. Allocated memory is still 303.6 MB. Free memory was 242.1 MB in the beginning and 240.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 448.31 ms. Allocated memory is still 303.6 MB. Free memory was 240.2 MB in the beginning and 216.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 11072.42 ms. Allocated memory was 303.6 MB in the beginning and 529.5 MB in the end (delta: 226.0 MB). Free memory was 215.0 MB in the beginning and 310.5 MB in the end (delta: -95.4 MB). Peak memory consumption was 130.5 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, 11.0s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 3.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 SDtfs, 35 SDslu, 113 SDs, 0 SdLazy, 104 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 6.8s 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: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 15220 SizeOfPredicates, 75 NumberOfNonLiveVariables, 1986 ConjunctsInSsa, 85 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/metros_1_e2_1102_e1_317.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-03-36-703.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e2_1102_e1_317.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-03-36-703.csv Received shutdown request...