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_1275_e2_454.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:13:54,817 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:13:54,819 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:13:54,830 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:13:54,830 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:13:54,831 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:13:54,832 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:13:54,834 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:13:54,835 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:13:54,836 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:13:54,837 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:13:54,837 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:13:54,838 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:13:54,839 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:13:54,840 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:13:54,841 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:13:54,842 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:13:54,844 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:13:54,846 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:13:54,847 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:13:54,848 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:13:54,851 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:13:54,851 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:13:54,851 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:13:54,852 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:13:54,853 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:13:54,854 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:13:54,855 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:13:54,856 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:13:54,856 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:13:54,857 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:13:54,857 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:13:54,858 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:13:54,858 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:13:54,859 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:13:54,859 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 19:13:54,872 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:13:54,874 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:13:54,874 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:13:54,874 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:13:54,875 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:13:54,876 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:13:54,876 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:13:54,876 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:13:54,876 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:13:54,877 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:13:54,877 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:13:54,877 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:13:54,877 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:13:54,877 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:13:54,877 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:13:54,878 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:13:54,878 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:13:54,878 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:13:54,878 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:13:54,880 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:13:54,880 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:13:54,918 INFO ]: Repository-Root is: /tmp [2018-06-22 19:13:54,934 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:13:54,939 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:13:54,940 INFO ]: Initializing SmtParser... [2018-06-22 19:13:54,941 INFO ]: SmtParser initialized [2018-06-22 19:13:54,942 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e3_1275_e2_454.smt2 [2018-06-22 19:13:54,943 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 19:13:55,035 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e3_1275_e2_454.smt2 unknown [2018-06-22 19:13:55,465 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e3_1275_e2_454.smt2 [2018-06-22 19:13:55,473 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:13:55,478 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:13:55,479 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:13:55,479 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:13:55,479 INFO ]: ChcToBoogie initialized [2018-06-22 19:13:55,482 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:13:55" (1/1) ... [2018-06-22 19:13:55,568 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:13:55 Unit [2018-06-22 19:13:55,568 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:13:55,569 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:13:55,569 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:13:55,569 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:13:55,590 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:13:55" (1/1) ... [2018-06-22 19:13:55,590 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:13:55" (1/1) ... [2018-06-22 19:13:55,603 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:13:55" (1/1) ... [2018-06-22 19:13:55,603 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:13:55" (1/1) ... [2018-06-22 19:13:55,617 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:13:55" (1/1) ... [2018-06-22 19:13:55,618 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:13:55" (1/1) ... [2018-06-22 19:13:55,626 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:13:55" (1/1) ... [2018-06-22 19:13:55,629 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:13:55,629 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:13:55,629 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:13:55,629 INFO ]: RCFGBuilder initialized [2018-06-22 19:13:55,630 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:13:55" (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 19:13:55,683 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:13:55,683 INFO ]: Found specification of procedure False [2018-06-22 19:13:55,683 INFO ]: Found implementation of procedure False [2018-06-22 19:13:55,683 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:13:55,683 INFO ]: Found specification of procedure state [2018-06-22 19:13:55,683 INFO ]: Found implementation of procedure state [2018-06-22 19:13:55,683 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:13:55,684 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:13:55,684 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 19:13:55,961 INFO ]: Using library mode [2018-06-22 19:13:55,961 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:13:55 BoogieIcfgContainer [2018-06-22 19:13:55,961 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:13:55,963 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:13:55,963 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:13:55,966 INFO ]: TraceAbstraction initialized [2018-06-22 19:13:55,967 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:13:55" (1/3) ... [2018-06-22 19:13:55,971 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711ec461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:13:55, skipping insertion in model container [2018-06-22 19:13:55,971 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:13:55" (2/3) ... [2018-06-22 19:13:55,972 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711ec461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:13:55, skipping insertion in model container [2018-06-22 19:13:55,972 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:13:55" (3/3) ... [2018-06-22 19:13:55,974 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:13:55,983 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:13:55,991 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:13:56,036 INFO ]: Using default assertion order modulation [2018-06-22 19:13:56,036 INFO ]: Interprodecural is true [2018-06-22 19:13:56,036 INFO ]: Hoare is false [2018-06-22 19:13:56,037 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:13:56,037 INFO ]: Backedges is TWOTRACK [2018-06-22 19:13:56,037 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:13:56,037 INFO ]: Difference is false [2018-06-22 19:13:56,037 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:13:56,037 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:13:56,051 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:13:56,065 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:13:56,065 INFO ]: Found error trace [2018-06-22 19:13:56,066 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:13:56,066 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:13:56,073 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 19:13:56,075 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:13:56,075 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:13:56,108 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:13:56,108 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:13:56,108 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:13:56,202 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:13:56,347 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:13:56,348 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:13:56,348 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:13:56,350 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:13:56,360 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:13:56,361 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:13:56,362 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:13:56,487 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:13:56,487 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:13:56,488 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:13:56,489 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:13:56,489 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:13:56,497 INFO ]: With dead ends: 13 [2018-06-22 19:13:56,497 INFO ]: Without dead ends: 13 [2018-06-22 19:13:56,499 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 19:13:56,512 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:13:56,531 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:13:56,532 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:13:56,533 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:13:56,534 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:13:56,534 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:13:56,534 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:13:56,535 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:13:56,535 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:13:56,536 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:13:56,536 INFO ]: Found error trace [2018-06-22 19:13:56,536 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:13:56,536 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:13:56,536 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 19:13:56,536 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:13:56,536 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:13:56,537 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:13:56,537 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:13:56,537 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:13:56,607 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:13:57,222 WARN ]: Spent 421.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2018-06-22 19:13:57,345 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:13:57,345 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:13:57,345 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 19:13:57,361 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:13:57,506 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:13:57,517 INFO ]: Computing forward predicates... [2018-06-22 19:13:57,726 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:13:57,752 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:13:57,753 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 19:13:57,753 INFO ]: Interpolant automaton has 9 states [2018-06-22 19:13:57,753 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 19:13:57,753 INFO ]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-06-22 19:13:57,753 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 19:13:58,232 WARN ]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-06-22 19:13:58,574 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:13:58,574 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:13:58,575 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:13:58,575 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 19:13:58,576 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:13:58,576 INFO ]: With dead ends: 15 [2018-06-22 19:13:58,576 INFO ]: Without dead ends: 15 [2018-06-22 19:13:58,577 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-06-22 19:13:58,577 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:13:58,579 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:13:58,579 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:13:58,581 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:13:58,581 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:13:58,581 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:13:58,582 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:13:58,582 INFO ]: Interpolant automaton has 9 states. [2018-06-22 19:13:58,582 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:13:58,582 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:13:58,582 INFO ]: Found error trace [2018-06-22 19:13:58,582 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:13:58,582 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:13:58,582 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 19:13:58,582 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:13:58,583 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:13:58,583 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:13:58,583 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:13:58,583 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:13:58,704 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:13:59,076 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:13:59,077 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:13:59,077 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 19:13:59,087 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:13:59,211 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:13:59,211 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:13:59,217 INFO ]: Computing forward predicates... [2018-06-22 19:13:59,669 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:13:59,703 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:13:59,703 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 19:13:59,703 INFO ]: Interpolant automaton has 13 states [2018-06-22 19:13:59,703 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 19:13:59,703 INFO ]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-06-22 19:13:59,704 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 19:14:00,413 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:14:00,413 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:14:00,413 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:14:00,414 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 19:14:00,414 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:14:00,414 INFO ]: With dead ends: 17 [2018-06-22 19:14:00,414 INFO ]: Without dead ends: 17 [2018-06-22 19:14:00,415 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:14:00,415 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:14:00,418 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:14:00,418 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:14:00,418 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:14:00,419 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:14:00,419 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:14:00,419 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:14:00,419 INFO ]: Interpolant automaton has 13 states. [2018-06-22 19:14:00,419 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:14:00,419 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:14:00,419 INFO ]: Found error trace [2018-06-22 19:14:00,420 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:14:00,420 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:14:00,420 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 19:14:00,420 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:14:00,420 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:14:00,421 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:14:00,421 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:14:00,421 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:14:00,504 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:14:00,803 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:14:00,803 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:14:00,803 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) [2018-06-22 19:14:00,819 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:14:00,950 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:14:00,950 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:14:00,956 INFO ]: Computing forward predicates... [2018-06-22 19:14:01,221 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:14:01,254 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:14:01,254 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-22 19:14:01,255 INFO ]: Interpolant automaton has 16 states [2018-06-22 19:14:01,255 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 19:14:01,255 INFO ]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:14:01,255 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-22 19:14:01,616 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:14:01,616 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:14:01,616 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:14:01,616 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-22 19:14:01,616 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:14:01,616 INFO ]: With dead ends: 13 [2018-06-22 19:14:01,616 INFO ]: Without dead ends: 0 [2018-06-22 19:14:01,616 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2018-06-22 19:14:01,617 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 19:14:01,617 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 19:14:01,617 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 19:14:01,617 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 19:14:01,617 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 19:14:01,617 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:14:01,617 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 19:14:01,617 INFO ]: Interpolant automaton has 16 states. [2018-06-22 19:14:01,617 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 19:14:01,617 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 19:14:01,622 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:14:01 BoogieIcfgContainer [2018-06-22 19:14:01,622 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:14:01,623 INFO ]: Toolchain (without parser) took 6149.39 ms. Allocated memory was 308.3 MB in the beginning and 392.2 MB in the end (delta: 83.9 MB). Free memory was 249.7 MB in the beginning and 294.9 MB in the end (delta: -45.2 MB). Peak memory consumption was 38.7 MB. Max. memory is 3.6 GB. [2018-06-22 19:14:01,624 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:14:01,624 INFO ]: ChcToBoogie took 89.90 ms. Allocated memory is still 308.3 MB. Free memory was 249.7 MB in the beginning and 247.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:14:01,624 INFO ]: Boogie Preprocessor took 59.71 ms. Allocated memory is still 308.3 MB. Free memory was 247.7 MB in the beginning and 245.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:14:01,625 INFO ]: RCFGBuilder took 332.31 ms. Allocated memory is still 308.3 MB. Free memory was 245.7 MB in the beginning and 221.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:14:01,625 INFO ]: TraceAbstraction took 5658.67 ms. Allocated memory was 308.3 MB in the beginning and 392.2 MB in the end (delta: 83.9 MB). Free memory was 221.7 MB in the beginning and 294.9 MB in the end (delta: -73.2 MB). Peak memory consumption was 10.7 MB. Max. memory is 3.6 GB. [2018-06-22 19:14:01,634 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 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 89.90 ms. Allocated memory is still 308.3 MB. Free memory was 249.7 MB in the beginning and 247.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 59.71 ms. Allocated memory is still 308.3 MB. Free memory was 247.7 MB in the beginning and 245.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 332.31 ms. Allocated memory is still 308.3 MB. Free memory was 245.7 MB in the beginning and 221.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 5658.67 ms. Allocated memory was 308.3 MB in the beginning and 392.2 MB in the end (delta: 83.9 MB). Free memory was 221.7 MB in the beginning and 294.9 MB in the end (delta: -73.2 MB). Peak memory consumption was 10.7 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, 5.5s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 2.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 30 SDslu, 142 SDs, 0 SdLazy, 123 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.6s 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, 2.4s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 7344 SizeOfPredicates, 64 NumberOfNonLiveVariables, 1944 ConjunctsInSsa, 78 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_3_e3_1275_e2_454.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-14-01-646.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_3_e3_1275_e2_454.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-14-01-646.csv Received shutdown request...