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_4_e2_532.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 09:18:52,010 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 09:18:52,012 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 09:18:52,033 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 09:18:52,034 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 09:18:52,035 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 09:18:52,036 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 09:18:52,041 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 09:18:52,042 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 09:18:52,045 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 09:18:52,045 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 09:18:52,046 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 09:18:52,046 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 09:18:52,051 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 09:18:52,052 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 09:18:52,053 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 09:18:52,054 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 09:18:52,068 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 09:18:52,070 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 09:18:52,070 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 09:18:52,071 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 09:18:52,074 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 09:18:52,074 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 09:18:52,074 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 09:18:52,075 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 09:18:52,075 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 09:18:52,080 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 09:18:52,081 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 09:18:52,082 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 09:18:52,082 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 09:18:52,082 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 09:18:52,087 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 09:18:52,087 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 09:18:52,088 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 09:18:52,088 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 09:18:52,089 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 09:18:52,108 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 09:18:52,108 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 09:18:52,108 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 09:18:52,109 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 09:18:52,110 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 09:18:52,110 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 09:18:52,110 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 09:18:52,110 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 09:18:52,110 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:18:52,111 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 09:18:52,111 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 09:18:52,111 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 09:18:52,111 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 09:18:52,111 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 09:18:52,112 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 09:18:52,112 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 09:18:52,113 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 09:18:52,114 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 09:18:52,114 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 09:18:52,165 INFO ]: Repository-Root is: /tmp [2018-06-22 09:18:52,181 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 09:18:52,187 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 09:18:52,189 INFO ]: Initializing SmtParser... [2018-06-22 09:18:52,189 INFO ]: SmtParser initialized [2018-06-22 09:18:52,189 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e2_532.smt2 [2018-06-22 09:18:52,191 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 09:18:52,275 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e2_532.smt2 unknown [2018-06-22 09:18:52,718 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e2_532.smt2 [2018-06-22 09:18:52,722 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 09:18:52,737 INFO ]: Walking toolchain with 4 elements. [2018-06-22 09:18:52,737 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 09:18:52,737 INFO ]: Initializing ChcToBoogie... [2018-06-22 09:18:52,737 INFO ]: ChcToBoogie initialized [2018-06-22 09:18:52,740 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:18:52" (1/1) ... [2018-06-22 09:18:52,860 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:18:52 Unit [2018-06-22 09:18:52,860 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 09:18:52,862 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 09:18:52,862 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 09:18:52,862 INFO ]: Boogie Preprocessor initialized [2018-06-22 09:18:52,882 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:18:52" (1/1) ... [2018-06-22 09:18:52,882 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:18:52" (1/1) ... [2018-06-22 09:18:52,900 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:18:52" (1/1) ... [2018-06-22 09:18:52,900 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:18:52" (1/1) ... [2018-06-22 09:18:52,912 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:18:52" (1/1) ... [2018-06-22 09:18:52,914 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:18:52" (1/1) ... [2018-06-22 09:18:52,916 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:18:52" (1/1) ... [2018-06-22 09:18:52,919 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 09:18:52,920 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 09:18:52,920 INFO ]: Initializing RCFGBuilder... [2018-06-22 09:18:52,920 INFO ]: RCFGBuilder initialized [2018-06-22 09:18:52,920 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:18:52" (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 09:18:52,941 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 09:18:52,941 INFO ]: Found specification of procedure gotoProc [2018-06-22 09:18:52,941 INFO ]: Found implementation of procedure gotoProc [2018-06-22 09:18:52,941 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 09:18:52,941 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 09:18:52,941 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 09:18:53,360 INFO ]: Using library mode [2018-06-22 09:18:53,360 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:18:53 BoogieIcfgContainer [2018-06-22 09:18:53,360 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 09:18:53,362 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 09:18:53,362 INFO ]: Initializing TraceAbstraction... [2018-06-22 09:18:53,368 INFO ]: TraceAbstraction initialized [2018-06-22 09:18:53,369 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:18:52" (1/3) ... [2018-06-22 09:18:53,370 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c33d315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 09:18:53, skipping insertion in model container [2018-06-22 09:18:53,370 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:18:52" (2/3) ... [2018-06-22 09:18:53,370 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c33d315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 09:18:53, skipping insertion in model container [2018-06-22 09:18:53,370 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:18:53" (3/3) ... [2018-06-22 09:18:53,372 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 09:18:53,382 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 09:18:53,390 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 09:18:53,449 INFO ]: Using default assertion order modulation [2018-06-22 09:18:53,450 INFO ]: Interprodecural is true [2018-06-22 09:18:53,450 INFO ]: Hoare is false [2018-06-22 09:18:53,450 INFO ]: Compute interpolants for FPandBP [2018-06-22 09:18:53,450 INFO ]: Backedges is TWOTRACK [2018-06-22 09:18:53,450 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 09:18:53,450 INFO ]: Difference is false [2018-06-22 09:18:53,450 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 09:18:53,450 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 09:18:53,466 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 09:18:53,478 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 09:18:53,478 INFO ]: Found error trace [2018-06-22 09:18:53,479 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:18:53,479 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:18:53,487 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 09:18:53,489 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:18:53,489 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:18:53,536 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:18:53,536 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:18:53,537 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:18:53,651 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:18:53,811 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:18:53,814 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 09:18:53,814 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 09:18:53,816 INFO ]: Interpolant automaton has 3 states [2018-06-22 09:18:53,832 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 09:18:53,832 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:18:53,835 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 09:18:53,910 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:18:53,910 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 09:18:53,911 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 09:18:53,912 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 09:18:53,912 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:18:53,920 INFO ]: With dead ends: 9 [2018-06-22 09:18:53,920 INFO ]: Without dead ends: 9 [2018-06-22 09:18:53,922 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 09:18:53,938 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 09:18:53,952 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 09:18:53,953 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 09:18:53,954 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 09:18:53,955 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 09:18:53,955 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:18:53,955 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 09:18:53,955 INFO ]: Interpolant automaton has 3 states. [2018-06-22 09:18:53,955 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 09:18:53,955 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 09:18:53,955 INFO ]: Found error trace [2018-06-22 09:18:53,956 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:18:53,956 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:18:53,956 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 09:18:53,956 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:18:53,956 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:18:53,957 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:18:53,957 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:18:53,957 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:18:54,078 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:18:54,264 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:18:54,265 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:18:54,265 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 09:18:54,271 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:18:54,409 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:18:54,419 INFO ]: Computing forward predicates... [2018-06-22 09:18:54,692 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:18:54,726 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:18:54,726 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 09:18:54,726 INFO ]: Interpolant automaton has 6 states [2018-06-22 09:18:54,726 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 09:18:54,726 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 09:18:54,727 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 09:18:54,904 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:18:54,905 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 09:18:54,905 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 09:18:54,905 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 09:18:54,906 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:18:54,906 INFO ]: With dead ends: 11 [2018-06-22 09:18:54,906 INFO ]: Without dead ends: 11 [2018-06-22 09:18:54,907 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 09:18:54,907 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 09:18:54,908 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 09:18:54,908 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 09:18:54,908 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 09:18:54,908 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 09:18:54,908 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:18:54,908 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 09:18:54,908 INFO ]: Interpolant automaton has 6 states. [2018-06-22 09:18:54,908 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 09:18:54,909 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 09:18:54,909 INFO ]: Found error trace [2018-06-22 09:18:54,909 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:18:54,909 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:18:54,909 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-22 09:18:54,909 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:18:54,909 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:18:54,911 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:18:54,911 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:18:54,911 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:18:55,070 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:18:55,644 WARN ]: Spent 180.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 12 [2018-06-22 09:18:55,652 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:18:55,652 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:18:55,652 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 09:18:55,660 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 09:18:55,861 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 09:18:55,861 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:18:55,870 INFO ]: Computing forward predicates... [2018-06-22 09:18:56,776 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:18:56,797 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:18:56,797 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 09:18:56,797 INFO ]: Interpolant automaton has 10 states [2018-06-22 09:18:56,797 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 09:18:56,797 INFO ]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-06-22 09:18:56,797 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 09:18:57,198 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:18:57,198 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 09:18:57,199 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 09:18:57,199 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 09:18:57,199 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:18:57,199 INFO ]: With dead ends: 13 [2018-06-22 09:18:57,199 INFO ]: Without dead ends: 13 [2018-06-22 09:18:57,200 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-06-22 09:18:57,200 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 09:18:57,201 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 09:18:57,201 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 09:18:57,202 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 09:18:57,202 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 09:18:57,202 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:18:57,202 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 09:18:57,203 INFO ]: Interpolant automaton has 10 states. [2018-06-22 09:18:57,203 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 09:18:57,203 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 09:18:57,203 INFO ]: Found error trace [2018-06-22 09:18:57,203 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:18:57,203 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:18:57,203 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 3 times [2018-06-22 09:18:57,203 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:18:57,203 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:18:57,204 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:18:57,204 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:18:57,204 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:18:57,447 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:18:58,371 WARN ]: Spent 128.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 12 [2018-06-22 09:18:59,356 WARN ]: Spent 859.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 20 [2018-06-22 09:19:00,182 WARN ]: Spent 768.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 12 [2018-06-22 09:19:01,030 WARN ]: Spent 786.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 20 [2018-06-22 09:19:01,037 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:19:01,038 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:19:01,038 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 09:19:01,043 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 09:19:01,255 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 09:19:01,255 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:19:01,264 INFO ]: Computing forward predicates... [2018-06-22 09:19:01,543 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:19:01,563 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:19:01,563 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 09:19:01,564 INFO ]: Interpolant automaton has 14 states [2018-06-22 09:19:01,564 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 09:19:01,564 INFO ]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-06-22 09:19:01,564 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-22 09:19:01,683 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:19:01,683 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-22 09:19:01,683 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 09:19:01,683 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-22 09:19:01,683 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:19:01,683 INFO ]: With dead ends: 15 [2018-06-22 09:19:01,683 INFO ]: Without dead ends: 15 [2018-06-22 09:19:01,684 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2018-06-22 09:19:01,684 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 09:19:01,686 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 09:19:01,686 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 09:19:01,686 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-22 09:19:01,686 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-06-22 09:19:01,686 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:19:01,686 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-22 09:19:01,687 INFO ]: Interpolant automaton has 14 states. [2018-06-22 09:19:01,687 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-22 09:19:01,687 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-22 09:19:01,687 INFO ]: Found error trace [2018-06-22 09:19:01,687 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:19:01,687 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:19:01,687 INFO ]: Analyzing trace with hash -414382217, now seen corresponding path program 4 times [2018-06-22 09:19:01,687 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:19:01,687 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:19:01,688 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:19:01,688 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:19:01,688 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:19:02,111 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:19:03,812 WARN ]: Spent 627.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 12 [2018-06-22 09:19:05,379 WARN ]: Spent 1.42 s on a formula simplification. DAG size of input: 410 DAG size of output: 39 [2018-06-22 09:19:07,022 WARN ]: Spent 1.45 s on a formula simplification. DAG size of input: 514 DAG size of output: 12 [2018-06-22 09:19:10,484 WARN ]: Spent 3.25 s on a formula simplification. DAG size of input: 668 DAG size of output: 55 [2018-06-22 09:19:12,582 WARN ]: Spent 2.00 s on a formula simplification. DAG size of input: 543 DAG size of output: 31 [2018-06-22 09:19:15,578 WARN ]: Spent 2.69 s on a formula simplification. DAG size of input: 893 DAG size of output: 39 [2018-06-22 09:19:15,591 INFO ]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:19:15,591 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:19:15,591 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 09:19:15,598 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 09:19:15,887 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 09:19:15,887 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:19:15,898 INFO ]: Computing forward predicates... [2018-06-22 09:19:16,486 INFO ]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:19:16,506 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:19:16,507 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-06-22 09:19:16,507 INFO ]: Interpolant automaton has 18 states [2018-06-22 09:19:16,507 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 09:19:16,507 INFO ]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2018-06-22 09:19:16,507 INFO ]: Start difference. First operand 15 states and 15 transitions. Second operand 18 states. [2018-06-22 09:19:16,650 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:19:16,650 INFO ]: Finished difference Result 17 states and 17 transitions. [2018-06-22 09:19:16,650 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 09:19:16,650 INFO ]: Start accepts. Automaton has 18 states. Word has length 14 [2018-06-22 09:19:16,650 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:19:16,651 INFO ]: With dead ends: 17 [2018-06-22 09:19:16,651 INFO ]: Without dead ends: 17 [2018-06-22 09:19:16,653 INFO ]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2018-06-22 09:19:16,653 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 09:19:16,654 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 09:19:16,654 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 09:19:16,655 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-06-22 09:19:16,655 INFO ]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-06-22 09:19:16,655 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:19:16,655 INFO ]: Abstraction has 17 states and 17 transitions. [2018-06-22 09:19:16,655 INFO ]: Interpolant automaton has 18 states. [2018-06-22 09:19:16,655 INFO ]: Start isEmpty. Operand 17 states and 17 transitions. [2018-06-22 09:19:16,656 INFO ]: Finished isEmpty. Found accepting run of length 17 [2018-06-22 09:19:16,656 INFO ]: Found error trace [2018-06-22 09:19:16,656 INFO ]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:19:16,656 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:19:16,656 INFO ]: Analyzing trace with hash 1237160535, now seen corresponding path program 5 times [2018-06-22 09:19:16,656 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:19:16,656 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:19:16,656 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:19:16,657 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:19:16,657 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:19:28,060 INFO ]: Conjunction of SSA is unsat Received shutdown request... [2018-06-22 09:19:53,844 FATAL]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$IntegerInterpolator.interpolate(Interpolator.java:1426) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$MixedLAInterpolator.convert(Interpolator.java:1282) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:125) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:121) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:73) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:239) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.mixedPivotLA(Interpolator.java:1472) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.combine(Interpolator.java:357) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$2(Interpolator.java:326) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$CombineInterpolants.walk(Interpolator.java:153) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:919) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:210) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:228) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:410) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:425) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:309) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:151) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:119) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-06-22 09:19:53,848 INFO ]: Toolchain (without parser) took 61125.34 ms. Allocated memory was 308.3 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 248.7 MB in the beginning and 819.2 MB in the end (delta: -570.5 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-22 09:19:53,849 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 09:19:53,849 INFO ]: ChcToBoogie took 124.05 ms. Allocated memory is still 308.3 MB. Free memory was 248.7 MB in the beginning and 246.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:19:53,849 INFO ]: Boogie Preprocessor took 57.35 ms. Allocated memory is still 308.3 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 09:19:53,852 INFO ]: RCFGBuilder took 440.68 ms. Allocated memory is still 308.3 MB. Free memory was 244.7 MB in the beginning and 212.8 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:19:53,852 INFO ]: TraceAbstraction took 60485.27 ms. Allocated memory was 308.3 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 212.8 MB in the beginning and 819.5 MB in the end (delta: -606.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 09:19:53,854 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 308.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 124.05 ms. Allocated memory is still 308.3 MB. Free memory was 248.7 MB in the beginning and 246.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 57.35 ms. Allocated memory is still 308.3 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. * RCFGBuilder took 440.68 ms. Allocated memory is still 308.3 MB. Free memory was 244.7 MB in the beginning and 212.8 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 60485.27 ms. Allocated memory was 308.3 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 212.8 MB in the beginning and 819.5 MB in the end (delta: -606.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$IntegerInterpolator.interpolate(Interpolator.java:1426) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_4_e2_532.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_09-19-53-864.csv Completed graceful shutdown