java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e2_943.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:03:39,703 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:03:39,706 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:03:39,722 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:03:39,722 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:03:39,724 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:03:39,725 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:03:39,729 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:03:39,731 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:03:39,733 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:03:39,734 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:03:39,734 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:03:39,735 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:03:39,736 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:03:39,739 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:03:39,739 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:03:39,741 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:03:39,751 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:03:39,752 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:03:39,754 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:03:39,757 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:03:39,759 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:03:39,760 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:03:39,760 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:03:39,764 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:03:39,766 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:03:39,766 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:03:39,767 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:03:39,772 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:03:39,772 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:03:39,773 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:03:39,774 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:03:39,774 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:03:39,775 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:03:39,775 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:03:39,775 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 19:03:39,799 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:03:39,799 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:03:39,801 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:03:39,802 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:03:39,803 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:03:39,803 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:03:39,803 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:03:39,804 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:03:39,804 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:03:39,804 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:03:39,804 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:03:39,804 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:03:39,805 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:03:39,805 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:03:39,806 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:03:39,806 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:03:39,806 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:03:39,806 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:03:39,806 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:03:39,808 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:03:39,808 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:03:39,853 INFO ]: Repository-Root is: /tmp [2018-06-22 19:03:39,874 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:03:39,881 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:03:39,883 INFO ]: Initializing SmtParser... [2018-06-22 19:03:39,883 INFO ]: SmtParser initialized [2018-06-22 19:03:39,884 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e2_943.smt2 [2018-06-22 19:03:39,886 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 19:03:39,988 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e2_943.smt2 unknown [2018-06-22 19:03:40,508 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e2_943.smt2 [2018-06-22 19:03:40,513 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:03:40,519 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:03:40,519 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:03:40,520 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:03:40,520 INFO ]: ChcToBoogie initialized [2018-06-22 19:03:40,523 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:03:40" (1/1) ... [2018-06-22 19:03:40,600 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:40 Unit [2018-06-22 19:03:40,600 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:03:40,601 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:03:40,601 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:03:40,601 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:03:40,631 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:40" (1/1) ... [2018-06-22 19:03:40,632 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:40" (1/1) ... [2018-06-22 19:03:40,645 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:40" (1/1) ... [2018-06-22 19:03:40,645 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:40" (1/1) ... [2018-06-22 19:03:40,663 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:40" (1/1) ... [2018-06-22 19:03:40,664 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:40" (1/1) ... [2018-06-22 19:03:40,666 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:40" (1/1) ... [2018-06-22 19:03:40,679 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:03:40,679 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:03:40,679 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:03:40,679 INFO ]: RCFGBuilder initialized [2018-06-22 19:03:40,680 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:40" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 19:03:40,705 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:03:40,705 INFO ]: Found specification of procedure False [2018-06-22 19:03:40,705 INFO ]: Found implementation of procedure False [2018-06-22 19:03:40,705 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:03:40,705 INFO ]: Found specification of procedure state [2018-06-22 19:03:40,705 INFO ]: Found implementation of procedure state [2018-06-22 19:03:40,705 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:03:40,705 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:03:40,705 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:03:41,042 INFO ]: Using library mode [2018-06-22 19:03:41,042 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:03:41 BoogieIcfgContainer [2018-06-22 19:03:41,042 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:03:41,044 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:03:41,044 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:03:41,048 INFO ]: TraceAbstraction initialized [2018-06-22 19:03:41,048 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:03:40" (1/3) ... [2018-06-22 19:03:41,049 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b925fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:03:41, skipping insertion in model container [2018-06-22 19:03:41,049 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:40" (2/3) ... [2018-06-22 19:03:41,049 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b925fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:03:41, skipping insertion in model container [2018-06-22 19:03:41,049 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:03:41" (3/3) ... [2018-06-22 19:03:41,051 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:03:41,062 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:03:41,075 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:03:41,131 INFO ]: Using default assertion order modulation [2018-06-22 19:03:41,131 INFO ]: Interprodecural is true [2018-06-22 19:03:41,131 INFO ]: Hoare is false [2018-06-22 19:03:41,132 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:03:41,132 INFO ]: Backedges is TWOTRACK [2018-06-22 19:03:41,132 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:03:41,132 INFO ]: Difference is false [2018-06-22 19:03:41,132 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:03:41,132 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:03:41,150 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:03:41,167 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:03:41,168 INFO ]: Found error trace [2018-06-22 19:03:41,169 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:03:41,169 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:03:41,174 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 19:03:41,176 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:03:41,176 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:03:41,220 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:03:41,220 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:03:41,220 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:03:41,363 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:03:41,519 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:03:41,521 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:03:41,521 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:03:41,523 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:03:41,540 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:03:41,541 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:03:41,544 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:03:41,695 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:03:41,695 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:03:41,697 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:03:41,698 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:03:41,699 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:03:41,712 INFO ]: With dead ends: 13 [2018-06-22 19:03:41,712 INFO ]: Without dead ends: 13 [2018-06-22 19:03:41,716 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:03:41,734 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:03:41,757 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:03:41,759 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:03:41,759 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:03:41,761 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:03:41,761 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:03:41,761 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:03:41,761 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:03:41,761 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:03:41,763 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:03:41,763 INFO ]: Found error trace [2018-06-22 19:03:41,763 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:03:41,763 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:03:41,763 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 19:03:41,763 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:03:41,763 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:03:41,764 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:03:41,764 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:03:41,764 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:03:41,831 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:03:42,216 WARN ]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 19:03:42,254 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:03:42,254 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:03:42,254 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) [2018-06-22 19:03:42,273 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:03:42,411 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:03:42,422 INFO ]: Computing forward predicates... [2018-06-22 19:03:42,686 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 5 DAG size of output: 4 [2018-06-22 19:03:42,886 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:03:42,930 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:03:42,930 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:03:42,930 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:03:42,931 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:03:42,931 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:03:42,931 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:03:43,380 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:03:43,380 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:03:43,381 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:03:43,381 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:03:43,381 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:03:43,382 INFO ]: With dead ends: 15 [2018-06-22 19:03:43,382 INFO ]: Without dead ends: 15 [2018-06-22 19:03:43,383 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 19:03:43,383 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:03:43,387 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:03:43,387 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:03:43,388 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:03:43,388 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:03:43,388 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:03:43,388 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:03:43,388 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:03:43,388 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:03:43,388 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:03:43,388 INFO ]: Found error trace [2018-06-22 19:03:43,389 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:03:43,389 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:03:43,389 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 19:03:43,389 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:03:43,389 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:03:43,393 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:03:43,393 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:03:43,393 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:03:43,475 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:03:44,133 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:03:44,133 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:03:44,133 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:03:44,142 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:03:44,304 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:03:44,304 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:03:44,310 INFO ]: Computing forward predicates... [2018-06-22 19:03:44,703 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:03:44,732 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:03:44,733 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 19:03:44,733 INFO ]: Interpolant automaton has 12 states [2018-06-22 19:03:44,733 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 19:03:44,734 INFO ]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-06-22 19:03:44,734 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 19:03:45,098 WARN ]: Spent 114.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2018-06-22 19:03:45,154 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:03:45,154 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:03:45,155 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:03:45,155 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 19:03:45,155 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:03:45,156 INFO ]: With dead ends: 17 [2018-06-22 19:03:45,156 INFO ]: Without dead ends: 17 [2018-06-22 19:03:45,157 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:03:45,157 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:03:45,160 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:03:45,160 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:03:45,160 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:03:45,160 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:03:45,160 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:03:45,161 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:03:45,161 INFO ]: Interpolant automaton has 12 states. [2018-06-22 19:03:45,161 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:03:45,161 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:03:45,161 INFO ]: Found error trace [2018-06-22 19:03:45,161 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:03:45,161 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:03:45,162 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 19:03:45,162 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:03:45,162 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:03:45,163 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:03:45,163 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:03:45,163 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:03:45,297 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:03:45,747 WARN ]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2018-06-22 19:03:45,847 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:03:45,847 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:03:45,847 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 19:03:45,863 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:03:46,057 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:03:46,057 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:03:46,066 INFO ]: Computing forward predicates... [2018-06-22 19:03:46,734 WARN ]: Spent 200.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-06-22 19:03:47,028 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:03:47,068 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:03:47,146 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 19:03:47,314 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:03:47,332 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:03:47,345 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 19:03:49,414 WARN ]: Spent 751.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 52 [2018-06-22 19:03:49,682 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:03:49,705 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:03:49,705 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-22 19:03:49,706 INFO ]: Interpolant automaton has 16 states [2018-06-22 19:03:49,706 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 19:03:49,706 INFO ]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:03:49,706 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-22 19:03:50,412 WARN ]: Spent 595.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 115 [2018-06-22 19:03:50,947 WARN ]: Spent 294.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 79 [2018-06-22 19:03:51,411 WARN ]: Spent 412.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 95 [2018-06-22 19:03:51,976 WARN ]: Spent 529.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 101 [2018-06-22 19:03:52,027 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:03:52,027 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 19:03:52,028 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 19:03:52,028 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-22 19:03:52,028 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:03:52,029 INFO ]: With dead ends: 19 [2018-06-22 19:03:52,029 INFO ]: Without dead ends: 19 [2018-06-22 19:03:52,029 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-06-22 19:03:52,029 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 19:03:52,033 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 19:03:52,034 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 19:03:52,034 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 19:03:52,034 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 19:03:52,034 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:03:52,034 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 19:03:52,034 INFO ]: Interpolant automaton has 16 states. [2018-06-22 19:03:52,034 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 19:03:52,035 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 19:03:52,035 INFO ]: Found error trace [2018-06-22 19:03:52,035 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:03:52,035 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:03:52,035 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-22 19:03:52,036 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:03:52,036 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:03:52,036 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:03:52,036 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:03:52,036 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:03:52,191 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:03:52,584 WARN ]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 19:03:53,180 WARN ]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2018-06-22 19:03:53,457 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:03:53,458 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:03:53,458 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:03:53,464 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 19:03:53,661 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 19:03:53,661 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:03:53,677 INFO ]: Computing forward predicates... [2018-06-22 19:03:56,516 WARN ]: Spent 935.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 48 [2018-06-22 19:03:58,821 WARN ]: Spent 818.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2018-06-22 19:04:01,834 WARN ]: Spent 172.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 28 [2018-06-22 19:04:02,093 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:04:02,121 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:04:02,121 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2018-06-22 19:04:02,121 INFO ]: Interpolant automaton has 20 states [2018-06-22 19:04:02,121 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 19:04:02,121 INFO ]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2018-06-22 19:04:02,121 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-22 19:04:03,163 WARN ]: Spent 973.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 173 [2018-06-22 19:04:03,419 WARN ]: Spent 230.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 75 [2018-06-22 19:04:04,609 WARN ]: Spent 1.12 s on a formula simplification. DAG size of input: 228 DAG size of output: 158 [2018-06-22 19:04:05,279 WARN ]: Spent 596.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 151 [2018-06-22 19:04:07,018 WARN ]: Spent 1.67 s on a formula simplification. DAG size of input: 204 DAG size of output: 170 [2018-06-22 19:04:08,163 WARN ]: Spent 1.08 s on a formula simplification. DAG size of input: 203 DAG size of output: 172 [2018-06-22 19:04:08,301 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:04:08,301 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:04:08,302 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 19:04:08,302 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-22 19:04:08,302 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:04:08,302 INFO ]: With dead ends: 15 [2018-06-22 19:04:08,302 INFO ]: Without dead ends: 0 [2018-06-22 19:04:08,303 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2018-06-22 19:04:08,303 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 19:04:08,303 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 19:04:08,303 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 19:04:08,303 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 19:04:08,303 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-22 19:04:08,303 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:04:08,303 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 19:04:08,303 INFO ]: Interpolant automaton has 20 states. [2018-06-22 19:04:08,303 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 19:04:08,303 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 19:04:08,311 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:04:08 BoogieIcfgContainer [2018-06-22 19:04:08,311 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:04:08,312 INFO ]: Toolchain (without parser) took 27798.49 ms. Allocated memory was 307.2 MB in the beginning and 728.8 MB in the end (delta: 421.5 MB). Free memory was 248.6 MB in the beginning and 504.5 MB in the end (delta: -255.9 MB). Peak memory consumption was 165.6 MB. Max. memory is 3.6 GB. [2018-06-22 19:04:08,313 INFO ]: SmtParser took 0.11 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:04:08,313 INFO ]: ChcToBoogie took 80.86 ms. Allocated memory is still 307.2 MB. Free memory was 247.6 MB in the beginning and 245.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:04:08,313 INFO ]: Boogie Preprocessor took 78.09 ms. Allocated memory is still 307.2 MB. Free memory was 245.6 MB in the beginning and 243.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:04:08,319 INFO ]: RCFGBuilder took 363.32 ms. Allocated memory is still 307.2 MB. Free memory was 243.6 MB in the beginning and 219.5 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 3.6 GB. [2018-06-22 19:04:08,320 INFO ]: TraceAbstraction took 27267.12 ms. Allocated memory was 307.2 MB in the beginning and 728.8 MB in the end (delta: 421.5 MB). Free memory was 218.5 MB in the beginning and 504.5 MB in the end (delta: -286.0 MB). Peak memory consumption was 135.5 MB. Max. memory is 3.6 GB. [2018-06-22 19:04:08,322 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.11 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 80.86 ms. Allocated memory is still 307.2 MB. Free memory was 247.6 MB in the beginning and 245.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 78.09 ms. Allocated memory is still 307.2 MB. Free memory was 245.6 MB in the beginning and 243.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 363.32 ms. Allocated memory is still 307.2 MB. Free memory was 243.6 MB in the beginning and 219.5 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 27267.12 ms. Allocated memory was 307.2 MB in the beginning and 728.8 MB in the end (delta: 421.5 MB). Free memory was 218.5 MB in the beginning and 504.5 MB in the end (delta: -286.0 MB). Peak memory consumption was 135.5 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. SAFE Result, 27.1s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 9.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 77 SDslu, 199 SDs, 0 SdLazy, 172 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 15.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 15.9s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 63964 SizeOfPredicates, 152 NumberOfNonLiveVariables, 3136 ConjunctsInSsa, 182 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 40/140 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e2_1102_e2_943.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-04-08-331.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e2_1102_e2_943.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-04-08-331.csv Received shutdown request...