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/ctigar/nest-if1.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:40:01,529 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:40:01,552 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:40:01,567 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:40:01,567 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:40:01,568 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:40:01,569 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:40:01,574 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:40:01,575 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:40:01,578 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:40:01,579 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:40:01,579 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:40:01,580 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:40:01,582 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:40:01,583 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:40:01,583 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:40:01,585 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:40:01,587 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:40:01,598 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:40:01,599 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:40:01,600 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:40:01,606 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:40:01,606 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:40:01,607 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:40:01,608 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:40:01,608 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:40:01,609 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:40:01,610 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:40:01,610 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:40:01,611 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:40:01,611 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:40:01,612 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:40:01,612 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:40:01,613 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:40:01,614 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:40:01,615 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:40:01,646 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:40:01,646 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:40:01,646 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:40:01,647 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:40:01,648 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:40:01,652 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:40:01,652 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:40:01,653 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:40:01,653 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:40:01,653 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:40:01,653 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:40:01,653 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:40:01,654 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:40:01,654 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:40:01,654 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:40:01,654 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:40:01,654 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:40:01,656 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:40:01,657 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:40:01,731 INFO ]: Repository-Root is: /tmp [2018-06-22 05:40:01,864 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:40:01,868 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:40:01,869 INFO ]: Initializing SmtParser... [2018-06-22 05:40:01,869 INFO ]: SmtParser initialized [2018-06-22 05:40:01,881 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/nest-if1.c.smt2 [2018-06-22 05:40:01,919 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 05:40:02,526 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/nest-if1.c.smt2 unknown [2018-06-22 05:40:03,082 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/nest-if1.c.smt2 [2018-06-22 05:40:03,189 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:40:03,196 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:40:03,197 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:40:03,197 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:40:03,197 INFO ]: ChcToBoogie initialized [2018-06-22 05:40:03,240 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:40:03" (1/1) ... [2018-06-22 05:40:03,455 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:40:03 Unit [2018-06-22 05:40:03,455 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:40:03,456 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:40:03,456 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:40:03,456 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:40:03,516 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:40:03" (1/1) ... [2018-06-22 05:40:03,516 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:40:03" (1/1) ... [2018-06-22 05:40:03,525 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:40:03" (1/1) ... [2018-06-22 05:40:03,534 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:40:03" (1/1) ... [2018-06-22 05:40:03,539 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:40:03" (1/1) ... [2018-06-22 05:40:03,540 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:40:03" (1/1) ... [2018-06-22 05:40:03,541 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:40:03" (1/1) ... [2018-06-22 05:40:03,547 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:40:03,552 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:40:03,553 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:40:03,553 INFO ]: RCFGBuilder initialized [2018-06-22 05:40:03,554 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:40:03" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:40:03,571 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:40:03,571 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:40:03,571 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:40:03,571 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:40:03,571 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:40:03,571 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 05:40:03,884 INFO ]: Using library mode [2018-06-22 05:40:03,884 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:40:03 BoogieIcfgContainer [2018-06-22 05:40:03,884 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:40:03,888 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:40:03,888 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:40:03,955 INFO ]: TraceAbstraction initialized [2018-06-22 05:40:03,956 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:40:03" (1/3) ... [2018-06-22 05:40:03,957 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70632fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:40:03, skipping insertion in model container [2018-06-22 05:40:03,957 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:40:03" (2/3) ... [2018-06-22 05:40:03,957 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70632fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:40:03, skipping insertion in model container [2018-06-22 05:40:03,957 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:40:03" (3/3) ... [2018-06-22 05:40:03,959 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:40:04,110 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:40:04,159 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:40:04,638 INFO ]: Using default assertion order modulation [2018-06-22 05:40:04,639 INFO ]: Interprodecural is true [2018-06-22 05:40:04,639 INFO ]: Hoare is false [2018-06-22 05:40:04,639 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:40:04,639 INFO ]: Backedges is TWOTRACK [2018-06-22 05:40:04,639 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:40:04,639 INFO ]: Difference is false [2018-06-22 05:40:04,639 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:40:04,639 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:40:04,922 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:40:05,156 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:40:05,156 INFO ]: Found error trace [2018-06-22 05:40:05,201 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:40:05,201 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:40:05,268 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 05:40:05,269 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:40:05,269 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:40:05,448 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:40:05,448 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:40:05,448 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:40:05,530 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:40:05,732 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:40:05,734 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:40:05,734 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:40:05,736 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:40:05,771 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:40:05,772 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:40:05,840 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:40:06,145 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:40:06,146 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:40:06,146 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:40:06,148 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:40:06,149 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:40:06,183 INFO ]: With dead ends: 9 [2018-06-22 05:40:06,183 INFO ]: Without dead ends: 9 [2018-06-22 05:40:06,185 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 05:40:06,327 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:40:06,379 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:40:06,380 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:40:06,381 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:40:06,389 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:40:06,389 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:40:06,389 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:40:06,389 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:40:06,389 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:40:06,390 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:40:06,390 INFO ]: Found error trace [2018-06-22 05:40:06,390 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:40:06,390 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:40:06,390 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 05:40:06,390 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:40:06,390 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:40:06,391 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:40:06,391 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:40:06,391 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:40:06,453 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:40:06,568 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:40:06,568 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:40:06,568 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 05:40:06,574 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:40:06,618 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:40:06,628 INFO ]: Computing forward predicates... [2018-06-22 05:40:08,649 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:40:08,674 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:40:08,674 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 05:40:08,675 INFO ]: Interpolant automaton has 5 states [2018-06-22 05:40:08,675 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 05:40:08,675 INFO ]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:40:08,675 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 05:40:08,714 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:40:08,714 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 05:40:08,715 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 05:40:08,715 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 05:40:08,715 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:40:08,716 INFO ]: With dead ends: 10 [2018-06-22 05:40:08,716 INFO ]: Without dead ends: 10 [2018-06-22 05:40:08,716 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:40:08,716 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 05:40:08,717 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 05:40:08,718 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 05:40:08,718 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 05:40:08,718 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 05:40:08,718 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:40:08,718 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 05:40:08,718 INFO ]: Interpolant automaton has 5 states. [2018-06-22 05:40:08,718 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 05:40:08,718 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 05:40:08,718 INFO ]: Found error trace [2018-06-22 05:40:08,719 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:40:08,720 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:40:08,720 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 05:40:08,720 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:40:08,720 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:40:08,721 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:40:08,721 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:40:08,721 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:40:08,781 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:40:08,945 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:40:08,945 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:40:08,945 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 05:40:08,951 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 05:40:09,024 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:40:09,024 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:40:09,028 INFO ]: Computing forward predicates... [2018-06-22 05:40:10,368 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:40:10,396 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:40:10,396 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-22 05:40:10,396 INFO ]: Interpolant automaton has 6 states [2018-06-22 05:40:10,396 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 05:40:10,396 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:40:10,396 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-06-22 05:40:10,471 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:40:10,472 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 05:40:10,472 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 05:40:10,472 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-22 05:40:10,472 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:40:10,473 INFO ]: With dead ends: 11 [2018-06-22 05:40:10,473 INFO ]: Without dead ends: 11 [2018-06-22 05:40:10,473 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-06-22 05:40:10,473 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 05:40:10,474 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 05:40:10,474 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 05:40:10,475 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 05:40:10,475 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 05:40:10,475 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:40:10,475 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 05:40:10,475 INFO ]: Interpolant automaton has 6 states. [2018-06-22 05:40:10,475 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 05:40:10,475 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 05:40:10,475 INFO ]: Found error trace [2018-06-22 05:40:10,475 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:40:10,475 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:40:10,476 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 3 times [2018-06-22 05:40:10,476 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:40:10,476 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:40:10,477 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:40:10,477 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:40:10,477 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:40:10,512 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:40:10,633 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:40:10,633 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:40:10,633 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 05:40:10,639 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:40:10,684 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 05:40:10,684 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:40:10,687 INFO ]: Computing forward predicates... [2018-06-22 05:40:12,259 WARN ]: Spent 108.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 7 [2018-06-22 05:40:16,710 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:40:16,731 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:40:16,731 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 05:40:16,731 INFO ]: Interpolant automaton has 8 states [2018-06-22 05:40:16,731 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 05:40:16,731 INFO ]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:40:16,731 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 8 states. [2018-06-22 05:40:16,824 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:40:16,824 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 05:40:16,824 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 05:40:16,824 INFO ]: Start accepts. Automaton has 8 states. Word has length 10 [2018-06-22 05:40:16,825 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:40:16,825 INFO ]: With dead ends: 12 [2018-06-22 05:40:16,825 INFO ]: Without dead ends: 12 [2018-06-22 05:40:16,825 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2018-06-22 05:40:16,826 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 05:40:16,827 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 05:40:16,827 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 05:40:16,827 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 05:40:16,827 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-22 05:40:16,827 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:40:16,827 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 05:40:16,827 INFO ]: Interpolant automaton has 8 states. [2018-06-22 05:40:16,827 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 05:40:16,829 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 05:40:16,829 INFO ]: Found error trace [2018-06-22 05:40:16,829 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:40:16,829 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:40:16,829 INFO ]: Analyzing trace with hash -1433955954, now seen corresponding path program 4 times [2018-06-22 05:40:16,829 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:40:16,829 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:40:16,830 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:40:16,830 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:40:16,830 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:40:16,869 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:40:17,009 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:40:17,009 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:40:17,009 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 05:40:17,015 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 05:40:17,061 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 05:40:17,061 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:40:17,064 INFO ]: Computing forward predicates... [2018-06-22 05:40:57,917 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:40:57,937 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:40:57,937 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-06-22 05:40:57,938 INFO ]: Interpolant automaton has 9 states [2018-06-22 05:40:57,938 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 05:40:57,938 INFO ]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-06-22 05:40:57,938 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 9 states. [2018-06-22 05:40:58,072 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:40:58,073 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 05:40:58,073 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 05:40:58,073 INFO ]: Start accepts. Automaton has 9 states. Word has length 11 [2018-06-22 05:40:58,073 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:40:58,073 INFO ]: With dead ends: 13 [2018-06-22 05:40:58,073 INFO ]: Without dead ends: 13 [2018-06-22 05:40:58,073 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2018-06-22 05:40:58,073 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 05:40:58,074 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 05:40:58,074 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 05:40:58,075 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 05:40:58,075 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-22 05:40:58,075 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:40:58,075 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 05:40:58,075 INFO ]: Interpolant automaton has 9 states. [2018-06-22 05:40:58,075 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 05:40:58,075 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 05:40:58,075 INFO ]: Found error trace [2018-06-22 05:40:58,075 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:40:58,075 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:40:58,075 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 5 times [2018-06-22 05:40:58,075 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:40:58,075 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:40:58,076 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:40:58,076 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:40:58,076 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:40:58,134 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:40:58,725 WARN ]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 05:40:58,845 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:40:58,846 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:40:58,846 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 [2018-06-22 05:40:58,857 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 05:40:58,898 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-22 05:40:58,898 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:40:58,901 INFO ]: Computing forward predicates... [2018-06-22 05:41:00,637 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:41:00,658 WARN ]: expecting exponential blowup for input size 6 Received shutdown request... [2018-06-22 05:41:13,275 INFO ]: Timeout while computing interpolants [2018-06-22 05:41:13,476 WARN ]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:41:13,476 WARN ]: Verification canceled [2018-06-22 05:41:13,479 WARN ]: Timeout [2018-06-22 05:41:13,479 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:41:13 BoogieIcfgContainer [2018-06-22 05:41:13,480 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:41:13,480 INFO ]: Toolchain (without parser) took 70290.29 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 260.8 MB in the beginning and 449.0 MB in the end (delta: -188.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:41:13,481 INFO ]: SmtParser took 0.14 ms. Allocated memory is still 308.3 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:41:13,481 INFO ]: ChcToBoogie took 258.29 ms. Allocated memory is still 308.3 MB. Free memory was 260.8 MB in the beginning and 258.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:41:13,482 INFO ]: Boogie Preprocessor took 92.01 ms. Allocated memory is still 308.3 MB. Free memory was 258.8 MB in the beginning and 256.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:41:13,482 INFO ]: RCFGBuilder took 331.85 ms. Allocated memory is still 308.3 MB. Free memory was 256.8 MB in the beginning and 246.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:41:13,483 INFO ]: TraceAbstraction took 69591.92 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 246.9 MB in the beginning and 449.0 MB in the end (delta: -202.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:41:13,491 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.14 ms. Allocated memory is still 308.3 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 258.29 ms. Allocated memory is still 308.3 MB. Free memory was 260.8 MB in the beginning and 258.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 92.01 ms. Allocated memory is still 308.3 MB. Free memory was 258.8 MB in the beginning and 256.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 331.85 ms. Allocated memory is still 308.3 MB. Free memory was 256.8 MB in the beginning and 246.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 69591.92 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 246.9 MB in the beginning and 449.0 MB in the end (delta: -202.1 MB). Peak memory consumption was 1.3 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 13 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 1413 quantified variables from 12 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 68.9s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 9 SDslu, 72 SDs, 0 SdLazy, 31 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 30 SyntacticMatches, 8 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 50.9s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 1915 SizeOfPredicates, 20 NumberOfNonLiveVariables, 588 ConjunctsInSsa, 117 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 0/40 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/nest-if1.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-41-13-507.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/nest-if1.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-41-13-507.csv Completed graceful shutdown