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_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e2_943.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 08:58:56,046 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 08:58:56,049 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 08:58:56,062 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 08:58:56,063 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 08:58:56,064 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 08:58:56,066 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 08:58:56,073 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 08:58:56,075 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 08:58:56,075 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 08:58:56,078 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 08:58:56,078 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 08:58:56,079 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 08:58:56,080 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 08:58:56,083 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 08:58:56,083 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 08:58:56,085 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 08:58:56,095 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 08:58:56,096 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 08:58:56,097 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 08:58:56,098 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 08:58:56,104 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 08:58:56,104 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 08:58:56,104 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 08:58:56,105 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 08:58:56,106 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 08:58:56,106 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 08:58:56,109 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 08:58:56,110 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 08:58:56,110 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 08:58:56,111 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 08:58:56,112 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 08:58:56,112 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 08:58:56,112 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 08:58:56,113 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 08:58:56,113 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 08:58:56,126 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 08:58:56,127 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 08:58:56,127 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 08:58:56,127 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 08:58:56,128 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 08:58:56,128 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 08:58:56,129 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 08:58:56,129 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 08:58:56,129 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 08:58:56,129 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 08:58:56,129 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 08:58:56,129 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 08:58:56,130 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 08:58:56,130 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 08:58:56,130 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 08:58:56,130 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 08:58:56,130 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 08:58:56,133 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 08:58:56,134 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 08:58:56,184 INFO ]: Repository-Root is: /tmp [2018-06-22 08:58:56,198 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 08:58:56,203 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 08:58:56,204 INFO ]: Initializing SmtParser... [2018-06-22 08:58:56,205 INFO ]: SmtParser initialized [2018-06-22 08:58:56,205 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e2_943.smt2 [2018-06-22 08:58:56,207 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 08:58:56,296 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e2_943.smt2 unknown [2018-06-22 08:58:56,678 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e2_943.smt2 [2018-06-22 08:58:56,689 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 08:58:56,695 INFO ]: Walking toolchain with 4 elements. [2018-06-22 08:58:56,705 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 08:58:56,705 INFO ]: Initializing ChcToBoogie... [2018-06-22 08:58:56,705 INFO ]: ChcToBoogie initialized [2018-06-22 08:58:56,709 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:58:56" (1/1) ... [2018-06-22 08:58:56,832 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:58:56 Unit [2018-06-22 08:58:56,832 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 08:58:56,833 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 08:58:56,833 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 08:58:56,833 INFO ]: Boogie Preprocessor initialized [2018-06-22 08:58:56,855 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:58:56" (1/1) ... [2018-06-22 08:58:56,855 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:58:56" (1/1) ... [2018-06-22 08:58:56,865 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:58:56" (1/1) ... [2018-06-22 08:58:56,865 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:58:56" (1/1) ... [2018-06-22 08:58:56,875 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:58:56" (1/1) ... [2018-06-22 08:58:56,878 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:58:56" (1/1) ... [2018-06-22 08:58:56,880 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:58:56" (1/1) ... [2018-06-22 08:58:56,883 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 08:58:56,883 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 08:58:56,883 INFO ]: Initializing RCFGBuilder... [2018-06-22 08:58:56,883 INFO ]: RCFGBuilder initialized [2018-06-22 08:58:56,884 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:58:56" (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 08:58:56,899 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 08:58:56,899 INFO ]: Found specification of procedure gotoProc [2018-06-22 08:58:56,899 INFO ]: Found implementation of procedure gotoProc [2018-06-22 08:58:56,900 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 08:58:56,900 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 08:58:56,900 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 08:58:57,347 INFO ]: Using library mode [2018-06-22 08:58:57,348 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:58:57 BoogieIcfgContainer [2018-06-22 08:58:57,348 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 08:58:57,357 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 08:58:57,357 INFO ]: Initializing TraceAbstraction... [2018-06-22 08:58:57,362 INFO ]: TraceAbstraction initialized [2018-06-22 08:58:57,362 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:58:56" (1/3) ... [2018-06-22 08:58:57,363 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4c0e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:58:57, skipping insertion in model container [2018-06-22 08:58:57,363 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:58:56" (2/3) ... [2018-06-22 08:58:57,364 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4c0e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:58:57, skipping insertion in model container [2018-06-22 08:58:57,364 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:58:57" (3/3) ... [2018-06-22 08:58:57,367 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 08:58:57,377 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 08:58:57,388 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 08:58:57,445 INFO ]: Using default assertion order modulation [2018-06-22 08:58:57,446 INFO ]: Interprodecural is true [2018-06-22 08:58:57,446 INFO ]: Hoare is false [2018-06-22 08:58:57,446 INFO ]: Compute interpolants for FPandBP [2018-06-22 08:58:57,446 INFO ]: Backedges is TWOTRACK [2018-06-22 08:58:57,446 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 08:58:57,446 INFO ]: Difference is false [2018-06-22 08:58:57,446 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 08:58:57,446 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 08:58:57,463 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 08:58:57,477 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 08:58:57,477 INFO ]: Found error trace [2018-06-22 08:58:57,480 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:58:57,481 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:58:57,487 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 08:58:57,489 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:58:57,490 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:58:57,540 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:58:57,540 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:58:57,540 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:58:57,643 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:58:57,785 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:58:57,788 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 08:58:57,788 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 08:58:57,789 INFO ]: Interpolant automaton has 3 states [2018-06-22 08:58:57,801 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 08:58:57,801 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 08:58:57,803 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 08:58:57,892 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:58:57,892 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 08:58:57,892 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 08:58:57,894 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 08:58:57,894 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:58:57,903 INFO ]: With dead ends: 9 [2018-06-22 08:58:57,903 INFO ]: Without dead ends: 9 [2018-06-22 08:58:57,908 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 08:58:57,928 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 08:58:57,946 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 08:58:57,947 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 08:58:57,948 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 08:58:57,952 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 08:58:57,952 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:58:57,952 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 08:58:57,952 INFO ]: Interpolant automaton has 3 states. [2018-06-22 08:58:57,952 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 08:58:57,952 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 08:58:57,952 INFO ]: Found error trace [2018-06-22 08:58:57,952 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:58:57,953 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:58:57,953 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 08:58:57,953 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:58:57,953 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:58:57,954 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:58:57,954 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:58:57,954 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:58:58,078 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:58:58,245 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:58:58,245 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 08:58:58,245 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 08:58:58,263 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:58:58,428 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:58:58,439 INFO ]: Computing forward predicates... [2018-06-22 08:58:58,605 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:58:58,631 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 08:58:58,631 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 08:58:58,632 INFO ]: Interpolant automaton has 5 states [2018-06-22 08:58:58,632 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 08:58:58,632 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 08:58:58,632 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 08:58:58,717 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:58:58,717 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 08:58:58,718 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 08:58:58,718 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 08:58:58,718 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:58:58,718 INFO ]: With dead ends: 10 [2018-06-22 08:58:58,718 INFO ]: Without dead ends: 10 [2018-06-22 08:58:58,719 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 08:58:58,719 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 08:58:58,720 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 08:58:58,720 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 08:58:58,720 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 08:58:58,721 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 08:58:58,721 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:58:58,721 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 08:58:58,721 INFO ]: Interpolant automaton has 5 states. [2018-06-22 08:58:58,721 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 08:58:58,721 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 08:58:58,721 INFO ]: Found error trace [2018-06-22 08:58:58,721 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:58:58,721 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:58:58,721 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 08:58:58,722 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:58:58,722 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:58:58,723 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:58:58,723 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:58:58,723 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:58:58,813 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:58:59,010 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:58:59,010 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 08:58:59,010 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) [2018-06-22 08:58:59,025 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 08:58:59,184 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 08:58:59,184 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:58:59,190 INFO ]: Computing forward predicates... [2018-06-22 08:58:59,605 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:58:59,626 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 08:58:59,626 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 08:58:59,626 INFO ]: Interpolant automaton has 8 states [2018-06-22 08:58:59,626 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 08:58:59,626 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 08:58:59,626 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-22 08:58:59,768 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:58:59,768 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 08:58:59,768 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 08:58:59,768 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-22 08:58:59,768 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:58:59,769 INFO ]: With dead ends: 11 [2018-06-22 08:58:59,769 INFO ]: Without dead ends: 11 [2018-06-22 08:58:59,769 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-06-22 08:58:59,769 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 08:58:59,770 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 08:58:59,770 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 08:58:59,771 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 08:58:59,771 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 08:58:59,771 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:58:59,771 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 08:58:59,771 INFO ]: Interpolant automaton has 8 states. [2018-06-22 08:58:59,771 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 08:58:59,771 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 08:58:59,771 INFO ]: Found error trace [2018-06-22 08:58:59,771 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:58:59,771 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:58:59,771 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-22 08:58:59,771 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:58:59,772 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:58:59,772 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:58:59,772 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 08:58:59,772 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:58:59,885 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:59:00,320 WARN ]: Spent 194.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 17 [2018-06-22 08:59:00,408 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:59:00,408 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 08:59:00,408 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 08:59:00,414 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 08:59:00,597 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 08:59:00,597 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:59:00,606 INFO ]: Computing forward predicates... [2018-06-22 08:59:01,249 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:59:01,773 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:59:02,254 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:59:02,666 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 08:59:02,902 WARN ]: Simplifying disjunction of 24192 conjuctions. This might take some time... Received shutdown request... [2018-06-22 09:00:17,006 INFO ]: Timeout while computing interpolants [2018-06-22 09:00:17,207 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 09:00:17,207 WARN ]: Verification canceled [2018-06-22 09:00:17,211 WARN ]: Timeout [2018-06-22 09:00:17,212 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 09:00:17 BoogieIcfgContainer [2018-06-22 09:00:17,212 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 09:00:17,213 INFO ]: Toolchain (without parser) took 80523.54 ms. Allocated memory was 308.3 MB in the beginning and 1.0 GB in the end (delta: 724.6 MB). Free memory was 249.7 MB in the beginning and 694.1 MB in the end (delta: -444.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-22 09:00:17,214 INFO ]: SmtParser took 0.09 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 09:00:17,214 INFO ]: ChcToBoogie took 127.80 ms. Allocated memory is still 308.3 MB. Free memory was 248.7 MB in the beginning and 245.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:00:17,214 INFO ]: Boogie Preprocessor took 49.48 ms. Allocated memory is still 308.3 MB. Free memory was 245.7 MB in the beginning and 244.7 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 3.6 GB. [2018-06-22 09:00:17,215 INFO ]: RCFGBuilder took 472.07 ms. Allocated memory is still 308.3 MB. Free memory was 244.7 MB in the beginning and 211.6 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 3.6 GB. [2018-06-22 09:00:17,215 INFO ]: TraceAbstraction took 79855.02 ms. Allocated memory was 308.3 MB in the beginning and 1.0 GB in the end (delta: 724.6 MB). Free memory was 211.6 MB in the beginning and 694.1 MB in the end (delta: -482.5 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. [2018-06-22 09:00:17,218 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 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 127.80 ms. Allocated memory is still 308.3 MB. Free memory was 248.7 MB in the beginning and 245.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 49.48 ms. Allocated memory is still 308.3 MB. Free memory was 245.7 MB in the beginning and 244.7 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 3.6 GB. * RCFGBuilder took 472.07 ms. Allocated memory is still 308.3 MB. Free memory was 244.7 MB in the beginning and 211.6 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 79855.02 ms. Allocated memory was 308.3 MB in the beginning and 1.0 GB in the end (delta: 724.6 MB). Free memory was 211.6 MB in the beginning and 694.1 MB in the end (delta: -482.5 MB). Peak memory consumption was 1.0 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 11 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 24192 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 79.7s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 0 SDslu, 40 SDs, 0 SdLazy, 34 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 405 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1252 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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_1_e2_1102_e2_943.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_09-00-17-234.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e2_1102_e2_943.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_09-00-17-234.csv Completed graceful shutdown