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_3_e3_1117.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:12:47,898 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:12:47,900 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:12:47,913 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:12:47,913 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:12:47,916 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:12:47,917 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:12:47,919 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:12:47,920 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:12:47,921 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:12:47,923 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:12:47,923 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:12:47,924 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:12:47,925 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:12:47,926 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:12:47,928 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:12:47,930 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:12:47,939 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:12:47,940 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:12:47,941 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:12:47,942 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:12:47,947 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:12:47,947 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:12:47,948 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:12:47,948 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:12:47,949 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:12:47,951 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:12:47,952 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:12:47,953 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:12:47,953 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:12:47,953 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:12:47,954 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:12:47,954 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:12:47,956 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:12:47,957 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:12:47,957 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 19:12:47,976 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:12:47,977 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:12:47,977 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:12:47,977 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:12:47,978 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:12:47,978 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:12:47,978 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:12:47,979 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:12:47,982 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:12:47,982 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:12:47,983 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:12:47,983 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:12:47,983 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:12:47,983 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:12:47,983 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:12:47,983 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:12:47,984 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:12:47,984 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:12:47,984 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:12:47,985 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:12:47,985 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:12:48,030 INFO ]: Repository-Root is: /tmp [2018-06-22 19:12:48,046 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:12:48,052 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:12:48,054 INFO ]: Initializing SmtParser... [2018-06-22 19:12:48,054 INFO ]: SmtParser initialized [2018-06-22 19:12:48,055 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e3_1117.smt2 [2018-06-22 19:12:48,056 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 19:12:48,144 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e3_1117.smt2 unknown [2018-06-22 19:12:48,647 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e3_1117.smt2 [2018-06-22 19:12:48,651 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:12:48,669 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:12:48,669 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:12:48,669 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:12:48,675 INFO ]: ChcToBoogie initialized [2018-06-22 19:12:48,678 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:12:48" (1/1) ... [2018-06-22 19:12:48,758 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:12:48 Unit [2018-06-22 19:12:48,758 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:12:48,759 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:12:48,759 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:12:48,759 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:12:48,788 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:12:48" (1/1) ... [2018-06-22 19:12:48,788 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:12:48" (1/1) ... [2018-06-22 19:12:48,801 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:12:48" (1/1) ... [2018-06-22 19:12:48,801 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:12:48" (1/1) ... [2018-06-22 19:12:48,807 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:12:48" (1/1) ... [2018-06-22 19:12:48,808 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:12:48" (1/1) ... [2018-06-22 19:12:48,810 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:12:48" (1/1) ... [2018-06-22 19:12:48,813 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:12:48,814 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:12:48,814 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:12:48,814 INFO ]: RCFGBuilder initialized [2018-06-22 19:12:48,815 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:12:48" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:12:48,835 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:12:48,835 INFO ]: Found specification of procedure False [2018-06-22 19:12:48,835 INFO ]: Found implementation of procedure False [2018-06-22 19:12:48,835 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:12:48,835 INFO ]: Found specification of procedure state [2018-06-22 19:12:48,835 INFO ]: Found implementation of procedure state [2018-06-22 19:12:48,835 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:12:48,835 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:12:48,835 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 19:12:49,117 INFO ]: Using library mode [2018-06-22 19:12:49,118 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:12:49 BoogieIcfgContainer [2018-06-22 19:12:49,118 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:12:49,119 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:12:49,119 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:12:49,122 INFO ]: TraceAbstraction initialized [2018-06-22 19:12:49,122 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:12:48" (1/3) ... [2018-06-22 19:12:49,123 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ff7f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:12:49, skipping insertion in model container [2018-06-22 19:12:49,123 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:12:48" (2/3) ... [2018-06-22 19:12:49,123 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ff7f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:12:49, skipping insertion in model container [2018-06-22 19:12:49,123 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:12:49" (3/3) ... [2018-06-22 19:12:49,125 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:12:49,134 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:12:49,143 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:12:49,183 INFO ]: Using default assertion order modulation [2018-06-22 19:12:49,184 INFO ]: Interprodecural is true [2018-06-22 19:12:49,184 INFO ]: Hoare is false [2018-06-22 19:12:49,184 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:12:49,184 INFO ]: Backedges is TWOTRACK [2018-06-22 19:12:49,184 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:12:49,184 INFO ]: Difference is false [2018-06-22 19:12:49,184 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:12:49,184 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:12:49,196 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:12:49,206 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:12:49,206 INFO ]: Found error trace [2018-06-22 19:12:49,207 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:12:49,207 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:12:49,215 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 19:12:49,216 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:12:49,216 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:12:49,253 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:12:49,253 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:12:49,253 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:12:49,353 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:12:49,480 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:12:49,481 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:12:49,481 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:12:49,483 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:12:49,493 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:12:49,494 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:12:49,495 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:12:49,616 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:12:49,616 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:12:49,618 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:12:49,619 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:12:49,620 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:12:49,636 INFO ]: With dead ends: 13 [2018-06-22 19:12:49,636 INFO ]: Without dead ends: 13 [2018-06-22 19:12:49,639 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:12:49,657 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:12:49,681 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:12:49,682 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:12:49,683 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:12:49,684 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:12:49,684 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:12:49,684 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:12:49,684 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:12:49,684 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:12:49,685 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:12:49,685 INFO ]: Found error trace [2018-06-22 19:12:49,685 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:12:49,685 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:12:49,685 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 19:12:49,685 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:12:49,685 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:12:49,686 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:12:49,686 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:12:49,686 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:12:49,790 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:12:50,157 WARN ]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 19:12:50,274 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:12:50,275 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:12:50,275 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 19:12:50,286 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:12:50,410 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:12:50,421 INFO ]: Computing forward predicates... [2018-06-22 19:12:50,815 WARN ]: Spent 228.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-06-22 19:12:51,101 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:12:51,126 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:12:51,126 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 19:12:51,127 INFO ]: Interpolant automaton has 9 states [2018-06-22 19:12:51,127 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 19:12:51,127 INFO ]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-06-22 19:12:51,127 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 19:12:51,627 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:12:51,627 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:12:51,629 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:12:51,629 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 19:12:51,629 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:12:51,629 INFO ]: With dead ends: 15 [2018-06-22 19:12:51,629 INFO ]: Without dead ends: 15 [2018-06-22 19:12:51,630 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-06-22 19:12:51,630 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:12:51,634 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:12:51,634 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:12:51,635 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:12:51,635 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:12:51,635 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:12:51,635 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:12:51,635 INFO ]: Interpolant automaton has 9 states. [2018-06-22 19:12:51,635 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:12:51,636 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:12:51,636 INFO ]: Found error trace [2018-06-22 19:12:51,636 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:12:51,636 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:12:51,636 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 19:12:51,636 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:12:51,636 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:12:51,637 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:12:51,637 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:12:51,637 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:12:51,763 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:12:52,054 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:12:52,055 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:12:52,055 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 19:12:52,063 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:12:52,202 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:12:52,202 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:12:52,208 INFO ]: Computing forward predicates... [2018-06-22 19:12:52,364 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-06-22 19:12:52,834 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:12:52,855 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:12:52,855 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 19:12:52,855 INFO ]: Interpolant automaton has 13 states [2018-06-22 19:12:52,856 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 19:12:52,856 INFO ]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-06-22 19:12:52,856 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 19:12:53,168 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:12:53,168 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:12:53,169 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:12:53,169 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 19:12:53,169 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:12:53,170 INFO ]: With dead ends: 17 [2018-06-22 19:12:53,170 INFO ]: Without dead ends: 17 [2018-06-22 19:12:53,170 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:12:53,170 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:12:53,173 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:12:53,173 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:12:53,174 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:12:53,174 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:12:53,174 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:12:53,174 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:12:53,174 INFO ]: Interpolant automaton has 13 states. [2018-06-22 19:12:53,174 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:12:53,175 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:12:53,175 INFO ]: Found error trace [2018-06-22 19:12:53,175 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:12:53,175 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:12:53,175 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 19:12:53,175 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:12:53,175 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:12:53,176 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:12:53,176 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:12:53,176 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:12:53,274 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:12:53,737 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:12:53,738 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:12:53,738 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 19:12:53,745 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 19:12:53,870 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:12:53,870 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:12:53,878 INFO ]: Computing forward predicates... [2018-06-22 19:12:54,438 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:12:54,473 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:12:54,546 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 19:12:54,546 INFO ]: Interpolant automaton has 17 states [2018-06-22 19:12:54,546 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 19:12:54,546 INFO ]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:12:54,546 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 19:12:54,896 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:12:54,896 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 19:12:54,897 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 19:12:54,897 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 19:12:54,898 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:12:54,898 INFO ]: With dead ends: 19 [2018-06-22 19:12:54,898 INFO ]: Without dead ends: 19 [2018-06-22 19:12:54,898 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2018-06-22 19:12:54,898 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 19:12:54,901 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 19:12:54,901 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 19:12:54,903 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 19:12:54,903 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 19:12:54,903 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:12:54,903 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 19:12:54,903 INFO ]: Interpolant automaton has 17 states. [2018-06-22 19:12:54,903 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 19:12:54,904 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 19:12:54,904 INFO ]: Found error trace [2018-06-22 19:12:54,904 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:12:54,904 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:12:54,904 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-22 19:12:54,904 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:12:54,904 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:12:54,905 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:12:54,905 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:12:54,905 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:12:55,054 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:12:55,780 WARN ]: Spent 231.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 24 [2018-06-22 19:12:56,049 WARN ]: Spent 211.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 53 [2018-06-22 19:12:56,382 WARN ]: Spent 269.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 36 [2018-06-22 19:12:56,506 WARN ]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 17 [2018-06-22 19:12:56,654 WARN ]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 20 [2018-06-22 19:12:56,668 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:12:56,668 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:12:56,668 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:12:56,674 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 19:12:56,829 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 19:12:56,829 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:12:56,836 INFO ]: Computing forward predicates... [2018-06-22 19:12:57,320 WARN ]: Spent 175.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 9 [2018-06-22 19:12:57,467 INFO ]: Checked inductivity of 36 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 19:12:57,487 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:12:57,487 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2018-06-22 19:12:57,488 INFO ]: Interpolant automaton has 20 states [2018-06-22 19:12:57,488 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 19:12:57,488 INFO ]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2018-06-22 19:12:57,488 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-22 19:12:57,705 WARN ]: Spent 147.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2018-06-22 19:12:57,986 WARN ]: Spent 215.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 103 [2018-06-22 19:12:58,197 WARN ]: Spent 178.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 96 [2018-06-22 19:12:58,392 WARN ]: Spent 145.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2018-06-22 19:12:58,629 WARN ]: Spent 177.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2018-06-22 19:12:58,828 WARN ]: Spent 160.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2018-06-22 19:12:58,879 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:12:58,879 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-22 19:12:58,883 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 19:12:58,883 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-22 19:12:58,884 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:12:58,884 INFO ]: With dead ends: 23 [2018-06-22 19:12:58,884 INFO ]: Without dead ends: 23 [2018-06-22 19:12:58,885 INFO ]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2018-06-22 19:12:58,885 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 19:12:58,888 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 19:12:58,888 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 19:12:58,893 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-22 19:12:58,893 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 25 [2018-06-22 19:12:58,893 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:12:58,893 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-22 19:12:58,893 INFO ]: Interpolant automaton has 20 states. [2018-06-22 19:12:58,893 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-22 19:12:58,894 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 19:12:58,894 INFO ]: Found error trace [2018-06-22 19:12:58,894 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:12:58,894 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:12:58,894 INFO ]: Analyzing trace with hash 800064122, now seen corresponding path program 5 times [2018-06-22 19:12:58,894 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:12:58,894 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:12:58,895 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:12:58,895 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:12:58,895 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:12:59,522 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:13:01,598 WARN ]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 19:13:04,314 WARN ]: Spent 2.54 s on a formula simplification. DAG size of input: 438 DAG size of output: 24 [2018-06-22 19:13:09,386 WARN ]: Spent 4.75 s on a formula simplification. DAG size of input: 607 DAG size of output: 26 [2018-06-22 19:13:10,485 WARN ]: Spent 908.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 20 [2018-06-22 19:13:13,561 WARN ]: Spent 2.60 s on a formula simplification. DAG size of input: 633 DAG size of output: 17 [2018-06-22 19:13:16,446 WARN ]: Spent 2.65 s on a formula simplification. DAG size of input: 631 DAG size of output: 15 [2018-06-22 19:13:20,268 WARN ]: Spent 3.42 s on a formula simplification. DAG size of input: 877 DAG size of output: 16 [2018-06-22 19:13:24,122 WARN ]: Spent 3.44 s on a formula simplification. DAG size of input: 893 DAG size of output: 10 [2018-06-22 19:13:30,340 WARN ]: Spent 5.71 s on a formula simplification. DAG size of input: 958 DAG size of output: 25 [2018-06-22 19:13:32,601 WARN ]: Spent 2.07 s on a formula simplification. DAG size of input: 425 DAG size of output: 17 [2018-06-22 19:13:32,616 INFO ]: Checked inductivity of 78 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-22 19:13:32,616 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:13:32,616 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:13:32,625 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 19:13:32,878 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-06-22 19:13:32,878 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:13:32,888 INFO ]: Computing forward predicates... [2018-06-22 19:13:33,368 INFO ]: Checked inductivity of 78 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-22 19:13:33,388 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:13:33,388 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2018-06-22 19:13:33,388 INFO ]: Interpolant automaton has 27 states [2018-06-22 19:13:33,388 INFO ]: Constructing interpolant automaton starting with 27 interpolants. [2018-06-22 19:13:33,389 INFO ]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2018-06-22 19:13:33,389 INFO ]: Start difference. First operand 23 states and 24 transitions. Second operand 27 states. [2018-06-22 19:13:33,612 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-06-22 19:13:33,941 WARN ]: Spent 136.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2018-06-22 19:13:34,107 WARN ]: Spent 136.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2018-06-22 19:13:34,284 WARN ]: Spent 147.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2018-06-22 19:13:34,469 WARN ]: Spent 152.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2018-06-22 19:13:34,622 WARN ]: Spent 116.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2018-06-22 19:13:34,867 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:13:34,868 INFO ]: Finished difference Result 25 states and 26 transitions. [2018-06-22 19:13:34,868 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 19:13:34,868 INFO ]: Start accepts. Automaton has 27 states. Word has length 33 [2018-06-22 19:13:34,868 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:13:34,869 INFO ]: With dead ends: 25 [2018-06-22 19:13:34,869 INFO ]: Without dead ends: 25 [2018-06-22 19:13:34,870 INFO ]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=223, Invalid=967, Unknown=0, NotChecked=0, Total=1190 [2018-06-22 19:13:34,870 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 19:13:34,873 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-22 19:13:34,873 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 19:13:34,874 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-06-22 19:13:34,874 INFO ]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 33 [2018-06-22 19:13:34,874 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:13:34,874 INFO ]: Abstraction has 25 states and 26 transitions. [2018-06-22 19:13:34,874 INFO ]: Interpolant automaton has 27 states. [2018-06-22 19:13:34,874 INFO ]: Start isEmpty. Operand 25 states and 26 transitions. [2018-06-22 19:13:34,875 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 19:13:34,875 INFO ]: Found error trace [2018-06-22 19:13:34,875 INFO ]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:13:34,875 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:13:34,875 INFO ]: Analyzing trace with hash -411423458, now seen corresponding path program 6 times [2018-06-22 19:13:34,875 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:13:34,875 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:13:34,876 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:13:34,876 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:13:34,876 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:13:35,781 INFO ]: Conjunction of SSA is unsat Received shutdown request... [2018-06-22 19:13:51,779 WARN ]: Removed 2 from assertion stack [2018-06-22 19:13:51,779 WARN ]: Verification canceled [2018-06-22 19:13:51,782 WARN ]: Timeout [2018-06-22 19:13:51,782 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:13:51 BoogieIcfgContainer [2018-06-22 19:13:51,782 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:13:51,783 INFO ]: Toolchain (without parser) took 63131.21 ms. Allocated memory was 305.1 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 246.7 MB in the beginning and 500.2 MB in the end (delta: -253.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 19:13:51,783 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 305.1 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:13:51,784 INFO ]: ChcToBoogie took 89.10 ms. Allocated memory is still 305.1 MB. Free memory was 246.7 MB in the beginning and 244.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:13:51,784 INFO ]: Boogie Preprocessor took 54.72 ms. Allocated memory is still 305.1 MB. Free memory was 244.7 MB in the beginning and 242.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:13:51,784 INFO ]: RCFGBuilder took 303.56 ms. Allocated memory is still 305.1 MB. Free memory was 242.7 MB in the beginning and 218.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 3.6 GB. [2018-06-22 19:13:51,785 INFO ]: TraceAbstraction took 62663.64 ms. Allocated memory was 305.1 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 218.6 MB in the beginning and 500.2 MB in the end (delta: -281.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 19:13:51,786 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 305.1 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 89.10 ms. Allocated memory is still 305.1 MB. Free memory was 246.7 MB in the beginning and 244.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 54.72 ms. Allocated memory is still 305.1 MB. Free memory was 244.7 MB in the beginning and 242.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 303.56 ms. Allocated memory is still 305.1 MB. Free memory was 242.7 MB in the beginning and 218.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 62663.64 ms. Allocated memory was 305.1 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 218.6 MB in the beginning and 500.2 MB in the end (delta: -281.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 38 with TraceHistMax 8, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 2340. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 62.6s OverallTime, 7 OverallIterations, 8 TraceHistogramMax, 4.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 66 SDtfs, 144 SDslu, 438 SDs, 0 SdLazy, 341 SolverSat, 186 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 36.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=6, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 39.0s InterpolantComputationTime, 227 NumberOfCodeBlocks, 227 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 42704 SizeOfPredicates, 144 NumberOfNonLiveVariables, 4674 ConjunctsInSsa, 182 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 86/296 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_3_e3_1117.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-13-51-796.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_3_e3_1117.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-13-51-796.csv Completed graceful shutdown