java -Xss4m -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/cav12/s3_srvr_2.cil.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 12:16:30,613 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 12:16:30,615 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 12:16:30,626 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 12:16:30,627 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 12:16:30,628 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 12:16:30,629 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 12:16:30,634 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 12:16:30,635 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 12:16:30,637 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 12:16:30,638 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 12:16:30,639 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 12:16:30,639 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 12:16:30,640 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 12:16:30,645 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 12:16:30,646 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 12:16:30,647 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 12:16:30,660 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 12:16:30,662 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 12:16:30,663 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 12:16:30,664 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 12:16:30,666 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 12:16:30,666 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 12:16:30,666 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 12:16:30,667 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 12:16:30,671 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 12:16:30,672 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 12:16:30,673 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 12:16:30,673 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 12:16:30,674 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 12:16:30,674 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 12:16:30,681 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 12:16:30,681 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 12:16:30,682 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 12:16:30,683 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 12:16:30,683 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 12:16:30,709 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 12:16:30,709 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 12:16:30,709 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 12:16:30,709 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 12:16:30,710 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 12:16:30,710 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 12:16:30,711 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 12:16:30,711 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 12:16:30,711 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 12:16:30,711 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 12:16:30,712 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 12:16:30,713 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 12:16:30,713 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 12:16:30,713 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 12:16:30,714 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 12:16:30,714 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 12:16:30,714 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 12:16:30,714 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 12:16:30,714 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 12:16:30,714 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 12:16:30,715 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 12:16:30,716 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 12:16:30,716 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 12:16:30,767 INFO ]: Repository-Root is: /tmp [2018-06-25 12:16:30,784 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 12:16:30,789 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 12:16:30,790 INFO ]: Initializing SmtParser... [2018-06-25 12:16:30,790 INFO ]: SmtParser initialized [2018-06-25 12:16:30,791 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_2.cil.smt2 [2018-06-25 12:16:30,792 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 [2018-06-25 12:16:30,889 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_2.cil.smt2 unknown [2018-06-25 12:16:31,422 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_2.cil.smt2 [2018-06-25 12:16:31,427 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 12:16:31,436 INFO ]: Walking toolchain with 4 elements. [2018-06-25 12:16:31,445 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 12:16:31,445 INFO ]: Initializing ChcToBoogie... [2018-06-25 12:16:31,445 INFO ]: ChcToBoogie initialized [2018-06-25 12:16:31,448 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:16:31" (1/1) ... [2018-06-25 12:16:31,585 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:16:31 Unit [2018-06-25 12:16:31,585 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 12:16:31,586 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 12:16:31,586 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 12:16:31,586 INFO ]: Boogie Preprocessor initialized [2018-06-25 12:16:31,607 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:16:31" (1/1) ... [2018-06-25 12:16:31,607 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:16:31" (1/1) ... [2018-06-25 12:16:31,630 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:16:31" (1/1) ... [2018-06-25 12:16:31,631 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:16:31" (1/1) ... [2018-06-25 12:16:31,657 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:16:31" (1/1) ... [2018-06-25 12:16:31,658 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:16:31" (1/1) ... [2018-06-25 12:16:31,662 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:16:31" (1/1) ... [2018-06-25 12:16:31,677 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 12:16:31,677 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 12:16:31,677 INFO ]: Initializing RCFGBuilder... [2018-06-25 12:16:31,677 INFO ]: RCFGBuilder initialized [2018-06-25 12:16:31,678 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:16:31" (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) [2018-06-25 12:16:31,703 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 12:16:31,703 INFO ]: Found specification of procedure gotoProc [2018-06-25 12:16:31,703 INFO ]: Found implementation of procedure gotoProc [2018-06-25 12:16:31,703 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 12:16:31,703 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 12:16:31,703 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 [2018-06-25 12:16:32,114 INFO ]: Using library mode [2018-06-25 12:16:32,115 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:16:32 BoogieIcfgContainer [2018-06-25 12:16:32,115 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 12:16:32,116 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 12:16:32,116 INFO ]: Initializing TraceAbstraction... [2018-06-25 12:16:32,120 INFO ]: TraceAbstraction initialized [2018-06-25 12:16:32,120 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:16:31" (1/3) ... [2018-06-25 12:16:32,121 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9a1139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 12:16:32, skipping insertion in model container [2018-06-25 12:16:32,121 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:16:31" (2/3) ... [2018-06-25 12:16:32,121 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9a1139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 12:16:32, skipping insertion in model container [2018-06-25 12:16:32,121 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:16:32" (3/3) ... [2018-06-25 12:16:32,123 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 12:16:32,133 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 12:16:32,145 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 12:16:32,198 INFO ]: Using default assertion order modulation [2018-06-25 12:16:32,199 INFO ]: Interprodecural is true [2018-06-25 12:16:32,199 INFO ]: Hoare is false [2018-06-25 12:16:32,199 INFO ]: Compute interpolants for FPandBP [2018-06-25 12:16:32,199 INFO ]: Backedges is TWOTRACK [2018-06-25 12:16:32,199 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 12:16:32,199 INFO ]: Difference is false [2018-06-25 12:16:32,199 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 12:16:32,199 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 12:16:32,211 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 12:16:32,223 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 12:16:32,223 INFO ]: Found error trace [2018-06-25 12:16:32,224 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:16:32,224 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:16:32,228 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-25 12:16:32,230 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:16:32,231 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:16:32,264 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:16:32,264 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:16:32,264 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:16:32,339 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:16:32,414 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:16:32,415 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 12:16:32,416 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 12:16:32,417 INFO ]: Interpolant automaton has 3 states [2018-06-25 12:16:32,428 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 12:16:32,428 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 12:16:32,431 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 12:16:32,557 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:16:32,557 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 12:16:32,558 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 12:16:32,559 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 12:16:32,559 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:16:32,569 INFO ]: With dead ends: 9 [2018-06-25 12:16:32,570 INFO ]: Without dead ends: 9 [2018-06-25 12:16:32,576 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 [2018-06-25 12:16:32,594 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 12:16:32,623 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 12:16:32,624 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 12:16:32,625 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 12:16:32,626 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 12:16:32,626 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:16:32,626 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 12:16:32,626 INFO ]: Interpolant automaton has 3 states. [2018-06-25 12:16:32,626 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 12:16:32,626 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 12:16:32,626 INFO ]: Found error trace [2018-06-25 12:16:32,626 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:16:32,627 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:16:32,627 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-25 12:16:32,627 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:16:32,627 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:16:32,628 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:16:32,628 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:16:32,628 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:16:32,758 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:16:33,011 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:16:33,011 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:16:33,011 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 [2018-06-25 12:16:33,019 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:16:33,169 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:16:33,182 INFO ]: Computing forward predicates... [2018-06-25 12:16:33,541 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:16:33,561 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:16:33,561 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 12:16:33,562 INFO ]: Interpolant automaton has 5 states [2018-06-25 12:16:33,562 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 12:16:33,562 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 12:16:33,562 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 12:16:33,917 WARN ]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-25 12:16:33,992 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:16:33,993 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 12:16:33,993 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 12:16:33,993 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 12:16:33,993 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:16:33,993 INFO ]: With dead ends: 11 [2018-06-25 12:16:33,993 INFO ]: Without dead ends: 11 [2018-06-25 12:16:33,994 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-06-25 12:16:33,994 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 12:16:33,995 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 12:16:33,995 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 12:16:33,996 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 12:16:33,996 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-25 12:16:33,996 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:16:33,996 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 12:16:33,996 INFO ]: Interpolant automaton has 5 states. [2018-06-25 12:16:33,996 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 12:16:33,996 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 12:16:33,996 INFO ]: Found error trace [2018-06-25 12:16:33,996 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:16:33,997 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:16:33,997 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-25 12:16:33,997 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:16:33,997 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:16:33,998 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:16:33,998 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:16:33,998 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:16:34,256 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:16:34,788 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:16:34,788 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:16:34,788 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 [2018-06-25 12:16:34,796 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 12:16:34,956 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 12:16:34,957 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:16:34,970 INFO ]: Computing forward predicates... [2018-06-25 12:16:36,884 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:16:36,905 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:16:36,905 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-25 12:16:36,905 INFO ]: Interpolant automaton has 9 states [2018-06-25 12:16:36,905 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-25 12:16:36,905 INFO ]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-06-25 12:16:36,905 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2018-06-25 12:16:37,096 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:16:37,096 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-25 12:16:37,096 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 12:16:37,096 INFO ]: Start accepts. Automaton has 9 states. Word has length 10 [2018-06-25 12:16:37,096 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:16:37,097 INFO ]: With dead ends: 12 [2018-06-25 12:16:37,097 INFO ]: Without dead ends: 12 [2018-06-25 12:16:37,097 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-06-25 12:16:37,097 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-25 12:16:37,098 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-25 12:16:37,098 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-25 12:16:37,099 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-25 12:16:37,099 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-25 12:16:37,099 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:16:37,099 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-25 12:16:37,099 INFO ]: Interpolant automaton has 9 states. [2018-06-25 12:16:37,099 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-25 12:16:37,099 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-25 12:16:37,099 INFO ]: Found error trace [2018-06-25 12:16:37,099 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:16:37,099 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:16:37,100 INFO ]: Analyzing trace with hash -1433955954, now seen corresponding path program 3 times [2018-06-25 12:16:37,100 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:16:37,100 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:16:37,100 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:16:37,100 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:16:37,100 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:16:37,247 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:16:37,871 WARN ]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 12:16:38,280 WARN ]: Spent 316.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 9 [2018-06-25 12:16:38,417 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:16:38,417 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:16:38,417 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 [2018-06-25 12:16:38,424 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 12:16:38,609 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 12:16:38,609 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:16:38,622 INFO ]: Computing forward predicates... [2018-06-25 12:16:39,197 WARN ]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-25 12:16:41,893 WARN ]: Spent 576.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 14 [2018-06-25 12:16:42,002 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:16:42,023 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:16:42,023 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-06-25 12:16:42,023 INFO ]: Interpolant automaton has 11 states [2018-06-25 12:16:42,024 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-25 12:16:42,024 INFO ]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-06-25 12:16:42,024 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-06-25 12:16:42,435 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:16:42,435 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-25 12:16:42,436 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-25 12:16:42,436 INFO ]: Start accepts. Automaton has 11 states. Word has length 11 [2018-06-25 12:16:42,436 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:16:42,436 INFO ]: With dead ends: 14 [2018-06-25 12:16:42,436 INFO ]: Without dead ends: 14 [2018-06-25 12:16:42,437 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2018-06-25 12:16:42,437 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-25 12:16:42,438 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-25 12:16:42,439 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-25 12:16:42,439 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-25 12:16:42,439 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-06-25 12:16:42,439 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:16:42,439 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-25 12:16:42,439 INFO ]: Interpolant automaton has 11 states. [2018-06-25 12:16:42,439 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-25 12:16:42,440 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-25 12:16:42,440 INFO ]: Found error trace [2018-06-25 12:16:42,440 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:16:42,440 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:16:42,440 INFO ]: Analyzing trace with hash 679342766, now seen corresponding path program 4 times [2018-06-25 12:16:42,440 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:16:42,440 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:16:42,440 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:16:42,440 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:16:42,440 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:16:42,761 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:16:43,441 WARN ]: Spent 110.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 15 [2018-06-25 12:16:43,537 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:16:43,537 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:16:43,538 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 [2018-06-25 12:16:43,549 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-25 12:16:43,806 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-25 12:16:43,806 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:16:43,825 INFO ]: Computing forward predicates... [2018-06-25 12:16:44,399 WARN ]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-25 12:16:46,418 WARN ]: Spent 1.32 s on a formula simplification. DAG size of input: 116 DAG size of output: 19 [2018-06-25 12:16:47,145 WARN ]: Spent 361.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 26 [2018-06-25 12:17:01,767 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:17:01,801 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:17:01,801 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-06-25 12:17:01,801 INFO ]: Interpolant automaton has 15 states [2018-06-25 12:17:01,802 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-25 12:17:01,802 INFO ]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2018-06-25 12:17:01,802 INFO ]: Start difference. First operand 14 states and 14 transitions. Second operand 15 states. [2018-06-25 12:17:02,114 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:17:02,114 INFO ]: Finished difference Result 16 states and 16 transitions. [2018-06-25 12:17:02,115 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-25 12:17:02,115 INFO ]: Start accepts. Automaton has 15 states. Word has length 13 [2018-06-25 12:17:02,115 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:17:02,115 INFO ]: With dead ends: 16 [2018-06-25 12:17:02,115 INFO ]: Without dead ends: 16 [2018-06-25 12:17:02,116 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2018-06-25 12:17:02,116 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-25 12:17:02,117 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-06-25 12:17:02,117 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-25 12:17:02,118 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-06-25 12:17:02,118 INFO ]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-06-25 12:17:02,118 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:17:02,118 INFO ]: Abstraction has 16 states and 16 transitions. [2018-06-25 12:17:02,118 INFO ]: Interpolant automaton has 15 states. [2018-06-25 12:17:02,118 INFO ]: Start isEmpty. Operand 16 states and 16 transitions. [2018-06-25 12:17:02,118 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-25 12:17:02,118 INFO ]: Found error trace [2018-06-25 12:17:02,118 INFO ]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:17:02,118 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:17:02,118 INFO ]: Analyzing trace with hash 39881678, now seen corresponding path program 5 times [2018-06-25 12:17:02,118 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:17:02,118 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:17:02,119 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:17:02,119 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:17:02,119 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:17:02,384 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:17:03,111 WARN ]: Spent 108.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 15 [2018-06-25 12:17:03,360 WARN ]: Spent 105.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 32 [2018-06-25 12:17:03,423 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:17:03,424 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:17:03,424 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 12:17:03,429 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-25 12:17:03,738 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-06-25 12:17:03,738 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:17:03,758 INFO ]: Computing forward predicates... [2018-06-25 12:17:07,851 WARN ]: Spent 2.62 s on a formula simplification. DAG size of input: 293 DAG size of output: 117 [2018-06-25 12:17:13,652 WARN ]: Spent 3.09 s on a formula simplification. DAG size of input: 374 DAG size of output: 121 [2018-06-25 12:17:19,615 WARN ]: Spent 4.60 s on a formula simplification. DAG size of input: 452 DAG size of output: 135 [2018-06-25 12:17:24,895 WARN ]: Spent 4.19 s on a formula simplification. DAG size of input: 408 DAG size of output: 144 Received shutdown request... [2018-06-25 12:17:32,336 INFO ]: Timeout while computing interpolants [2018-06-25 12:17:32,537 WARN ]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 12:17:32,537 WARN ]: Verification canceled [2018-06-25 12:17:32,543 WARN ]: Timeout [2018-06-25 12:17:32,543 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 12:17:32 BoogieIcfgContainer [2018-06-25 12:17:32,543 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 12:17:32,545 INFO ]: Toolchain (without parser) took 61117.22 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 242.2 MB in the beginning and 250.4 MB in the end (delta: -8.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 12:17:32,545 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 307.8 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 12:17:32,546 INFO ]: ChcToBoogie took 140.55 ms. Allocated memory is still 307.8 MB. Free memory was 240.2 MB in the beginning and 238.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 12:17:32,546 INFO ]: Boogie Preprocessor took 91.08 ms. Allocated memory is still 307.8 MB. Free memory was 238.2 MB in the beginning and 236.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 12:17:32,546 INFO ]: RCFGBuilder took 437.51 ms. Allocated memory is still 307.8 MB. Free memory was 236.2 MB in the beginning and 204.3 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. [2018-06-25 12:17:32,547 INFO ]: TraceAbstraction took 60427.19 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 204.3 MB in the beginning and 250.4 MB in the end (delta: -46.2 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-25 12:17:32,549 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 307.8 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 140.55 ms. Allocated memory is still 307.8 MB. Free memory was 240.2 MB in the beginning and 238.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 91.08 ms. Allocated memory is still 307.8 MB. Free memory was 238.2 MB in the beginning and 236.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 437.51 ms. Allocated memory is still 307.8 MB. Free memory was 236.2 MB in the beginning and 204.3 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 60427.19 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 204.3 MB in the beginning and 250.4 MB in the end (delta: -46.2 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 8, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 752 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 60.3s OverallTime, 6 OverallIterations, 8 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 6 SDslu, 128 SDs, 0 SdLazy, 52 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=5, 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: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 26.4s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 4513 SizeOfPredicates, 11 NumberOfNonLiveVariables, 2040 ConjunctsInSsa, 98 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 0/76 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/s3_srvr_2.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_12-17-32-563.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_srvr_2.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_12-17-32-563.csv Completed graceful shutdown