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_e7_1163.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 09:00:16,810 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 09:00:16,812 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 09:00:16,826 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 09:00:16,826 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 09:00:16,828 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 09:00:16,829 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 09:00:16,833 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 09:00:16,835 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 09:00:16,836 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 09:00:16,838 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 09:00:16,838 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 09:00:16,839 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 09:00:16,842 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 09:00:16,843 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 09:00:16,844 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 09:00:16,846 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 09:00:16,857 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 09:00:16,859 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 09:00:16,860 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 09:00:16,861 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 09:00:16,863 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 09:00:16,863 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 09:00:16,863 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 09:00:16,864 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 09:00:16,870 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 09:00:16,870 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 09:00:16,871 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 09:00:16,872 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 09:00:16,872 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 09:00:16,873 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 09:00:16,873 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 09:00:16,873 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 09:00:16,874 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 09:00:16,875 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 09:00:16,875 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 09:00:16,888 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 09:00:16,888 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 09:00:16,888 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 09:00:16,889 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 09:00:16,890 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 09:00:16,890 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 09:00:16,890 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 09:00:16,890 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 09:00:16,890 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:00:16,891 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 09:00:16,891 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 09:00:16,891 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 09:00:16,891 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 09:00:16,891 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 09:00:16,891 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 09:00:16,892 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 09:00:16,892 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 09:00:16,893 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 09:00:16,893 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 09:00:16,943 INFO ]: Repository-Root is: /tmp [2018-06-22 09:00:16,958 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 09:00:16,964 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 09:00:16,966 INFO ]: Initializing SmtParser... [2018-06-22 09:00:16,966 INFO ]: SmtParser initialized [2018-06-22 09:00:16,966 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e7_1163.smt2 [2018-06-22 09:00:16,968 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 09:00:17,054 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e7_1163.smt2 unknown [2018-06-22 09:00:17,498 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e7_1163.smt2 [2018-06-22 09:00:17,502 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 09:00:17,508 INFO ]: Walking toolchain with 4 elements. [2018-06-22 09:00:17,508 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 09:00:17,508 INFO ]: Initializing ChcToBoogie... [2018-06-22 09:00:17,509 INFO ]: ChcToBoogie initialized [2018-06-22 09:00:17,524 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:00:17" (1/1) ... [2018-06-22 09:00:17,644 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:00:17 Unit [2018-06-22 09:00:17,644 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 09:00:17,645 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 09:00:17,645 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 09:00:17,645 INFO ]: Boogie Preprocessor initialized [2018-06-22 09:00:17,665 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:00:17" (1/1) ... [2018-06-22 09:00:17,665 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:00:17" (1/1) ... [2018-06-22 09:00:17,674 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:00:17" (1/1) ... [2018-06-22 09:00:17,675 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:00:17" (1/1) ... [2018-06-22 09:00:17,682 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:00:17" (1/1) ... [2018-06-22 09:00:17,683 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:00:17" (1/1) ... [2018-06-22 09:00:17,685 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:00:17" (1/1) ... [2018-06-22 09:00:17,689 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 09:00:17,689 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 09:00:17,689 INFO ]: Initializing RCFGBuilder... [2018-06-22 09:00:17,689 INFO ]: RCFGBuilder initialized [2018-06-22 09:00:17,690 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:00:17" (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 09:00:17,706 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 09:00:17,706 INFO ]: Found specification of procedure gotoProc [2018-06-22 09:00:17,706 INFO ]: Found implementation of procedure gotoProc [2018-06-22 09:00:17,706 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 09:00:17,706 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 09:00:17,706 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 09:00:18,115 INFO ]: Using library mode [2018-06-22 09:00:18,115 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:00:18 BoogieIcfgContainer [2018-06-22 09:00:18,116 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 09:00:18,118 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 09:00:18,118 INFO ]: Initializing TraceAbstraction... [2018-06-22 09:00:18,122 INFO ]: TraceAbstraction initialized [2018-06-22 09:00:18,122 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:00:17" (1/3) ... [2018-06-22 09:00:18,123 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5778dd5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 09:00:18, skipping insertion in model container [2018-06-22 09:00:18,123 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:00:17" (2/3) ... [2018-06-22 09:00:18,123 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5778dd5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 09:00:18, skipping insertion in model container [2018-06-22 09:00:18,123 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:00:18" (3/3) ... [2018-06-22 09:00:18,125 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 09:00:18,135 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 09:00:18,144 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 09:00:18,192 INFO ]: Using default assertion order modulation [2018-06-22 09:00:18,192 INFO ]: Interprodecural is true [2018-06-22 09:00:18,192 INFO ]: Hoare is false [2018-06-22 09:00:18,192 INFO ]: Compute interpolants for FPandBP [2018-06-22 09:00:18,192 INFO ]: Backedges is TWOTRACK [2018-06-22 09:00:18,192 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 09:00:18,192 INFO ]: Difference is false [2018-06-22 09:00:18,192 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 09:00:18,192 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 09:00:18,208 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 09:00:18,221 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 09:00:18,221 INFO ]: Found error trace [2018-06-22 09:00:18,224 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:00:18,224 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:00:18,229 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 09:00:18,231 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:00:18,232 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:00:18,275 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:00:18,275 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:00:18,275 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:00:18,399 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:00:18,521 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:00:18,523 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 09:00:18,524 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 09:00:18,525 INFO ]: Interpolant automaton has 3 states [2018-06-22 09:00:18,536 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 09:00:18,536 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:00:18,538 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 09:00:18,603 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:00:18,603 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 09:00:18,604 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 09:00:18,604 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 09:00:18,605 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:00:18,612 INFO ]: With dead ends: 9 [2018-06-22 09:00:18,612 INFO ]: Without dead ends: 9 [2018-06-22 09:00:18,613 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 09:00:18,626 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 09:00:18,647 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 09:00:18,648 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 09:00:18,648 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 09:00:18,649 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 09:00:18,650 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:00:18,650 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 09:00:18,650 INFO ]: Interpolant automaton has 3 states. [2018-06-22 09:00:18,650 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 09:00:18,650 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 09:00:18,650 INFO ]: Found error trace [2018-06-22 09:00:18,650 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:00:18,650 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:00:18,650 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 09:00:18,650 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:00:18,650 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:00:18,652 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:00:18,652 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:00:18,652 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:00:18,736 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:00:18,852 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:00:18,853 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:00:18,853 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 09:00:18,861 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:00:19,003 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:00:19,014 INFO ]: Computing forward predicates... [2018-06-22 09:00:19,142 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:00:19,175 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:00:19,175 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 09:00:19,176 INFO ]: Interpolant automaton has 5 states [2018-06-22 09:00:19,176 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 09:00:19,176 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 09:00:19,176 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 09:00:19,298 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:00:19,298 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 09:00:19,299 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 09:00:19,299 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 09:00:19,299 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:00:19,300 INFO ]: With dead ends: 10 [2018-06-22 09:00:19,300 INFO ]: Without dead ends: 10 [2018-06-22 09:00:19,300 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 09:00:19,301 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 09:00:19,302 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 09:00:19,302 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 09:00:19,302 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 09:00:19,302 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 09:00:19,302 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:00:19,302 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 09:00:19,302 INFO ]: Interpolant automaton has 5 states. [2018-06-22 09:00:19,302 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 09:00:19,302 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 09:00:19,302 INFO ]: Found error trace [2018-06-22 09:00:19,302 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:00:19,303 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:00:19,303 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 09:00:19,303 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:00:19,303 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:00:19,304 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:00:19,304 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:00:19,304 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:00:19,418 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:00:19,644 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:00:19,644 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:00:19,644 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 09:00:19,650 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 09:00:19,814 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 09:00:19,814 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:00:19,820 INFO ]: Computing forward predicates... [2018-06-22 09:00:20,372 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:00:20,394 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:00:20,394 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-06-22 09:00:20,394 INFO ]: Interpolant automaton has 7 states [2018-06-22 09:00:20,394 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 09:00:20,394 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-22 09:00:20,394 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 7 states. [2018-06-22 09:00:20,517 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:00:20,517 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 09:00:20,518 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 09:00:20,518 INFO ]: Start accepts. Automaton has 7 states. Word has length 9 [2018-06-22 09:00:20,518 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:00:20,518 INFO ]: With dead ends: 11 [2018-06-22 09:00:20,518 INFO ]: Without dead ends: 11 [2018-06-22 09:00:20,519 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-22 09:00:20,519 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 09:00:20,521 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 09:00:20,521 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 09:00:20,521 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 09:00:20,521 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 09:00:20,521 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:00:20,521 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 09:00:20,521 INFO ]: Interpolant automaton has 7 states. [2018-06-22 09:00:20,521 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 09:00:20,522 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 09:00:20,522 INFO ]: Found error trace [2018-06-22 09:00:20,522 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:00:20,522 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:00:20,522 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-22 09:00:20,522 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:00:20,522 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:00:20,523 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:00:20,523 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:00:20,523 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:00:20,628 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:00:21,587 WARN ]: Spent 528.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2018-06-22 09:00:21,596 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:00:21,596 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:00:21,596 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 09:00:21,602 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 09:00:21,775 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 09:00:21,775 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:00:21,783 INFO ]: Computing forward predicates... [2018-06-22 09:00:22,059 WARN ]: expecting exponential blowup for input size 14 [2018-06-22 09:00:22,385 WARN ]: Simplifying disjunction of 20736 conjuctions. This might take some time... [2018-06-22 09:01:20,466 INFO ]: Simplified to disjunction of 20736 conjuctions. [2018-06-22 09:01:21,458 WARN ]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 10 [2018-06-22 09:01:21,462 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:01:21,483 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:01:21,484 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 09:01:21,484 INFO ]: Interpolant automaton has 10 states [2018-06-22 09:01:21,484 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 09:01:21,484 INFO ]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-06-22 09:01:21,484 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 09:01:21,746 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:01:21,746 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 09:01:21,747 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 09:01:21,747 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 09:01:21,747 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:01:21,747 INFO ]: With dead ends: 13 [2018-06-22 09:01:21,747 INFO ]: Without dead ends: 13 [2018-06-22 09:01:21,748 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-06-22 09:01:21,748 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 09:01:21,749 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 09:01:21,749 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 09:01:21,750 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 09:01:21,750 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 09:01:21,750 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:01:21,750 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 09:01:21,750 INFO ]: Interpolant automaton has 10 states. [2018-06-22 09:01:21,750 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 09:01:21,750 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 09:01:21,750 INFO ]: Found error trace [2018-06-22 09:01:21,750 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:01:21,750 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:01:21,751 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 4 times [2018-06-22 09:01:21,751 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:01:21,751 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:01:21,751 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:01:21,751 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:01:21,751 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:01:22,009 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:01:22,992 WARN ]: Spent 692.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 16 [2018-06-22 09:01:23,877 WARN ]: Spent 809.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2018-06-22 09:01:23,878 INFO ]: Checked inductivity of 15 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 09:01:23,878 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:01:23,878 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) [2018-06-22 09:01:23,901 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 09:01:24,154 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 09:01:24,154 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:01:24,167 INFO ]: Computing forward predicates... [2018-06-22 09:01:24,643 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 09:01:25,849 WARN ]: Simplifying disjunction of 110592 conjuctions. This might take some time... Received shutdown request... [2018-06-22 09:01:33,877 INFO ]: Timeout while computing interpolants [2018-06-22 09:01:34,078 WARN ]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 09:01:34,078 WARN ]: Verification canceled [2018-06-22 09:01:34,081 WARN ]: Timeout [2018-06-22 09:01:34,082 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 09:01:34 BoogieIcfgContainer [2018-06-22 09:01:34,082 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 09:01:34,082 INFO ]: Toolchain (without parser) took 76579.47 ms. Allocated memory was 309.3 MB in the beginning and 1.2 GB in the end (delta: 882.4 MB). Free memory was 250.8 MB in the beginning and 625.8 MB in the end (delta: -375.1 MB). Peak memory consumption was 960.5 MB. Max. memory is 3.6 GB. [2018-06-22 09:01:34,083 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 09:01:34,083 INFO ]: ChcToBoogie took 136.26 ms. Allocated memory is still 309.3 MB. Free memory was 249.8 MB in the beginning and 246.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:01:34,083 INFO ]: Boogie Preprocessor took 43.75 ms. Allocated memory is still 309.3 MB. Free memory was 246.8 MB in the beginning and 245.8 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 09:01:34,084 INFO ]: RCFGBuilder took 426.28 ms. Allocated memory is still 309.3 MB. Free memory was 245.8 MB in the beginning and 213.4 MB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 3.6 GB. [2018-06-22 09:01:34,084 INFO ]: TraceAbstraction took 75963.23 ms. Allocated memory was 309.3 MB in the beginning and 1.2 GB in the end (delta: 882.4 MB). Free memory was 212.4 MB in the beginning and 625.8 MB in the end (delta: -413.4 MB). Peak memory consumption was 922.2 MB. Max. memory is 3.6 GB. [2018-06-22 09:01:34,087 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 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 136.26 ms. Allocated memory is still 309.3 MB. Free memory was 249.8 MB in the beginning and 246.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 43.75 ms. Allocated memory is still 309.3 MB. Free memory was 246.8 MB in the beginning and 245.8 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 426.28 ms. Allocated memory is still 309.3 MB. Free memory was 245.8 MB in the beginning and 213.4 MB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 3.6 GB. * TraceAbstraction took 75963.23 ms. Allocated memory was 309.3 MB in the beginning and 1.2 GB in the end (delta: 882.4 MB). Free memory was 212.4 MB in the beginning and 625.8 MB in the end (delta: -413.4 MB). Peak memory consumption was 922.2 MB. 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 13 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 110592 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 75.9s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 75 SDs, 0 SdLazy, 65 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=4, 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, 61.8s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1422 SizeOfPredicates, 16 NumberOfNonLiveVariables, 2238 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/20 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_e7_1163.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_09-01-34-106.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e2_1102_e7_1163.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_09-01-34-106.csv Completed graceful shutdown