java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/cd.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 06:26:58,723 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 06:26:58,725 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 06:26:58,738 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 06:26:58,738 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 06:26:58,740 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 06:26:58,742 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 06:26:58,744 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 06:26:58,746 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 06:26:58,747 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 06:26:58,747 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 06:26:58,748 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 06:26:58,749 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 06:26:58,750 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 06:26:58,752 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 06:26:58,753 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 06:26:58,755 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 06:26:58,758 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 06:26:58,759 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 06:26:58,761 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 06:26:58,762 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 06:26:58,765 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 06:26:58,765 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 06:26:58,765 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 06:26:58,766 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 06:26:58,767 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 06:26:58,768 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 06:26:58,769 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 06:26:58,771 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 06:26:58,771 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 06:26:58,772 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 06:26:58,773 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 06:26:58,773 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 06:26:58,774 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 06:26:58,775 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 06:26:58,775 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 06:26:58,789 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 06:26:58,790 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 06:26:58,790 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 06:26:58,790 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 06:26:58,792 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 06:26:58,792 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 06:26:58,792 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 06:26:58,792 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 06:26:58,793 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 06:26:58,793 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 06:26:58,793 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 06:26:58,793 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 06:26:58,793 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 06:26:58,794 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 06:26:58,794 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 06:26:58,794 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 06:26:58,794 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 06:26:58,796 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 06:26:58,796 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 06:26:58,833 INFO ]: Repository-Root is: /tmp [2018-06-22 06:26:58,854 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 06:26:58,863 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 06:26:58,864 INFO ]: Initializing SmtParser... [2018-06-22 06:26:58,865 INFO ]: SmtParser initialized [2018-06-22 06:26:58,865 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/cd.smt2 [2018-06-22 06:26:58,867 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 06:26:58,954 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/cd.smt2 unknown [2018-06-22 06:26:59,296 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/cd.smt2 [2018-06-22 06:26:59,302 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 06:26:59,308 INFO ]: Walking toolchain with 4 elements. [2018-06-22 06:26:59,308 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 06:26:59,308 INFO ]: Initializing ChcToBoogie... [2018-06-22 06:26:59,308 INFO ]: ChcToBoogie initialized [2018-06-22 06:26:59,312 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:26:59" (1/1) ... [2018-06-22 06:26:59,388 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:26:59 Unit [2018-06-22 06:26:59,389 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 06:26:59,392 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 06:26:59,392 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 06:26:59,392 INFO ]: Boogie Preprocessor initialized [2018-06-22 06:26:59,417 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:26:59" (1/1) ... [2018-06-22 06:26:59,417 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:26:59" (1/1) ... [2018-06-22 06:26:59,426 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:26:59" (1/1) ... [2018-06-22 06:26:59,426 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:26:59" (1/1) ... [2018-06-22 06:26:59,441 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:26:59" (1/1) ... [2018-06-22 06:26:59,443 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:26:59" (1/1) ... [2018-06-22 06:26:59,444 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:26:59" (1/1) ... [2018-06-22 06:26:59,446 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 06:26:59,447 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 06:26:59,447 INFO ]: Initializing RCFGBuilder... [2018-06-22 06:26:59,447 INFO ]: RCFGBuilder initialized [2018-06-22 06:26:59,448 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:26:59" (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 06:26:59,470 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 06:26:59,470 INFO ]: Found specification of procedure gotoProc [2018-06-22 06:26:59,470 INFO ]: Found implementation of procedure gotoProc [2018-06-22 06:26:59,470 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 06:26:59,470 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 06:26:59,470 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 06:26:59,833 INFO ]: Using library mode [2018-06-22 06:26:59,839 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:26:59 BoogieIcfgContainer [2018-06-22 06:26:59,839 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 06:26:59,841 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 06:26:59,841 INFO ]: Initializing TraceAbstraction... [2018-06-22 06:26:59,850 INFO ]: TraceAbstraction initialized [2018-06-22 06:26:59,850 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:26:59" (1/3) ... [2018-06-22 06:26:59,851 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70978e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 06:26:59, skipping insertion in model container [2018-06-22 06:26:59,851 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:26:59" (2/3) ... [2018-06-22 06:26:59,852 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70978e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 06:26:59, skipping insertion in model container [2018-06-22 06:26:59,852 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:26:59" (3/3) ... [2018-06-22 06:26:59,855 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 06:26:59,864 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 06:26:59,878 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 06:26:59,919 INFO ]: Using default assertion order modulation [2018-06-22 06:26:59,919 INFO ]: Interprodecural is true [2018-06-22 06:26:59,919 INFO ]: Hoare is false [2018-06-22 06:26:59,919 INFO ]: Compute interpolants for FPandBP [2018-06-22 06:26:59,919 INFO ]: Backedges is TWOTRACK [2018-06-22 06:26:59,919 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 06:26:59,919 INFO ]: Difference is false [2018-06-22 06:26:59,919 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 06:26:59,919 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 06:26:59,936 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 06:26:59,947 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 06:26:59,947 INFO ]: Found error trace [2018-06-22 06:26:59,948 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:26:59,949 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:26:59,953 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 06:26:59,954 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:26:59,955 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:26:59,989 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:26:59,989 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:26:59,989 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:27:00,084 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:27:00,233 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:27:00,236 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 06:27:00,236 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 06:27:00,239 INFO ]: Interpolant automaton has 3 states [2018-06-22 06:27:00,257 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 06:27:00,258 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 06:27:00,260 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 06:27:00,350 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:27:00,350 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 06:27:00,351 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 06:27:00,352 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 06:27:00,353 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:27:00,367 INFO ]: With dead ends: 9 [2018-06-22 06:27:00,367 INFO ]: Without dead ends: 9 [2018-06-22 06:27:00,371 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 06:27:00,391 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 06:27:00,417 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 06:27:00,418 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 06:27:00,419 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 06:27:00,420 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 06:27:00,420 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:27:00,420 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 06:27:00,420 INFO ]: Interpolant automaton has 3 states. [2018-06-22 06:27:00,420 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 06:27:00,421 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 06:27:00,421 INFO ]: Found error trace [2018-06-22 06:27:00,421 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:27:00,421 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:27:00,421 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 06:27:00,421 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:27:00,421 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:27:00,422 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:27:00,422 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:27:00,422 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:27:00,478 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:27:00,671 WARN ]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 06:27:00,797 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:27:00,798 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:27:00,798 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 06:27:00,817 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:27:00,936 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:27:00,947 INFO ]: Computing forward predicates... [2018-06-22 06:27:01,051 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:27:01,084 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 06:27:01,084 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 06:27:01,085 INFO ]: Interpolant automaton has 6 states [2018-06-22 06:27:01,085 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 06:27:01,085 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 06:27:01,086 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 06:27:01,168 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:27:01,168 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 06:27:01,168 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 06:27:01,168 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 06:27:01,169 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:27:01,169 INFO ]: With dead ends: 11 [2018-06-22 06:27:01,169 INFO ]: Without dead ends: 11 [2018-06-22 06:27:01,170 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 06:27:01,170 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 06:27:01,171 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 06:27:01,172 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 06:27:01,172 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 06:27:01,172 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 06:27:01,172 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:27:01,172 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 06:27:01,172 INFO ]: Interpolant automaton has 6 states. [2018-06-22 06:27:01,172 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 06:27:01,173 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 06:27:01,174 INFO ]: Found error trace [2018-06-22 06:27:01,174 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:27:01,174 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:27:01,174 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-22 06:27:01,174 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:27:01,174 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:27:01,175 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:27:01,175 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:27:01,175 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:27:01,275 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:27:01,949 WARN ]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-06-22 06:27:02,054 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:27:02,054 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:27:02,054 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 06:27:02,068 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 06:27:02,199 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 06:27:02,199 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:27:02,204 INFO ]: Computing forward predicates... [2018-06-22 06:27:02,597 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:27:02,619 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 06:27:02,619 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 06:27:02,619 INFO ]: Interpolant automaton has 9 states [2018-06-22 06:27:02,619 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 06:27:02,619 INFO ]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-06-22 06:27:02,619 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2018-06-22 06:27:03,240 WARN ]: Spent 433.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2018-06-22 06:27:03,372 WARN ]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 06:27:03,390 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:27:03,390 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 06:27:03,391 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 06:27:03,391 INFO ]: Start accepts. Automaton has 9 states. Word has length 10 [2018-06-22 06:27:03,391 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:27:03,392 INFO ]: With dead ends: 13 [2018-06-22 06:27:03,392 INFO ]: Without dead ends: 13 [2018-06-22 06:27:03,392 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-06-22 06:27:03,392 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 06:27:03,393 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 06:27:03,393 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 06:27:03,394 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 06:27:03,394 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 06:27:03,394 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:27:03,394 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 06:27:03,394 INFO ]: Interpolant automaton has 9 states. [2018-06-22 06:27:03,394 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 06:27:03,395 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 06:27:03,396 INFO ]: Found error trace [2018-06-22 06:27:03,396 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:27:03,396 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:27:03,397 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 3 times [2018-06-22 06:27:03,397 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:27:03,397 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:27:03,398 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:27:03,398 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 06:27:03,398 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:27:03,521 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:27:04,433 WARN ]: Spent 330.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-06-22 06:27:04,444 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:27:04,459 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:27:04,459 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 06:27:04,468 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 06:27:04,603 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 06:27:04,603 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:27:04,611 INFO ]: Computing forward predicates... [2018-06-22 06:27:05,455 WARN ]: Spent 358.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35 [2018-06-22 06:27:05,466 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:27:05,572 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:27:06,355 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:27:06,376 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 06:27:06,377 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 06:27:06,377 INFO ]: Interpolant automaton has 13 states [2018-06-22 06:27:06,377 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 06:27:06,377 INFO ]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-06-22 06:27:06,377 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 13 states. [2018-06-22 06:27:06,691 WARN ]: Spent 289.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2018-06-22 06:27:07,004 WARN ]: Spent 294.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2018-06-22 06:27:07,206 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:27:07,206 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 06:27:07,207 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 06:27:07,207 INFO ]: Start accepts. Automaton has 13 states. Word has length 12 [2018-06-22 06:27:07,207 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:27:07,207 INFO ]: With dead ends: 14 [2018-06-22 06:27:07,207 INFO ]: Without dead ends: 14 [2018-06-22 06:27:07,208 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2018-06-22 06:27:07,208 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 06:27:07,209 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 06:27:07,210 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 06:27:07,210 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-22 06:27:07,210 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-06-22 06:27:07,210 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:27:07,210 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-22 06:27:07,210 INFO ]: Interpolant automaton has 13 states. [2018-06-22 06:27:07,210 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-22 06:27:07,211 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 06:27:07,211 INFO ]: Found error trace [2018-06-22 06:27:07,211 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:27:07,211 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:27:07,211 INFO ]: Analyzing trace with hash 23503628, now seen corresponding path program 4 times [2018-06-22 06:27:07,211 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:27:07,211 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:27:07,212 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:27:07,212 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 06:27:07,212 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:27:07,268 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:27:07,517 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:27:07,518 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:27:07,518 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 06:27:07,531 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 06:27:07,648 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 06:27:07,648 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:27:07,654 INFO ]: Computing forward predicates... [2018-06-22 06:27:07,913 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:27:07,935 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 06:27:07,935 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-06-22 06:27:07,936 INFO ]: Interpolant automaton has 15 states [2018-06-22 06:27:07,936 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 06:27:07,936 INFO ]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-06-22 06:27:07,936 INFO ]: Start difference. First operand 14 states and 14 transitions. Second operand 15 states. [2018-06-22 06:27:08,130 WARN ]: Spent 130.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2018-06-22 06:27:08,264 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:27:08,265 INFO ]: Finished difference Result 16 states and 16 transitions. [2018-06-22 06:27:08,265 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 06:27:08,265 INFO ]: Start accepts. Automaton has 15 states. Word has length 13 [2018-06-22 06:27:08,265 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:27:08,265 INFO ]: With dead ends: 16 [2018-06-22 06:27:08,265 INFO ]: Without dead ends: 16 [2018-06-22 06:27:08,266 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2018-06-22 06:27:08,266 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-22 06:27:08,268 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-06-22 06:27:08,268 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-22 06:27:08,268 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-06-22 06:27:08,268 INFO ]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-06-22 06:27:08,268 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:27:08,268 INFO ]: Abstraction has 16 states and 16 transitions. [2018-06-22 06:27:08,268 INFO ]: Interpolant automaton has 15 states. [2018-06-22 06:27:08,268 INFO ]: Start isEmpty. Operand 16 states and 16 transitions. [2018-06-22 06:27:08,269 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-22 06:27:08,269 INFO ]: Found error trace [2018-06-22 06:27:08,269 INFO ]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:27:08,269 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:27:08,269 INFO ]: Analyzing trace with hash 1051911180, now seen corresponding path program 5 times [2018-06-22 06:27:08,269 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:27:08,269 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:27:08,269 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:27:08,270 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 06:27:08,270 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:27:08,341 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:27:08,679 WARN ]: Spent 111.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-06-22 06:27:08,799 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:27:08,799 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:27:08,799 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 06:27:08,808 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 06:27:08,913 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-06-22 06:27:08,913 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:27:08,919 INFO ]: Computing forward predicates... [2018-06-22 06:27:09,365 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:27:09,395 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 06:27:09,395 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-06-22 06:27:09,395 INFO ]: Interpolant automaton has 19 states [2018-06-22 06:27:09,395 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-22 06:27:09,395 INFO ]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2018-06-22 06:27:09,396 INFO ]: Start difference. First operand 16 states and 16 transitions. Second operand 19 states. [2018-06-22 06:27:09,984 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:27:09,984 INFO ]: Finished difference Result 17 states and 17 transitions. [2018-06-22 06:27:10,009 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 06:27:10,009 INFO ]: Start accepts. Automaton has 19 states. Word has length 15 [2018-06-22 06:27:10,010 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:27:10,010 INFO ]: With dead ends: 17 [2018-06-22 06:27:10,010 INFO ]: Without dead ends: 17 [2018-06-22 06:27:10,011 INFO ]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2018-06-22 06:27:10,011 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 06:27:10,012 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 06:27:10,012 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 06:27:10,013 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-06-22 06:27:10,015 INFO ]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-06-22 06:27:10,015 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:27:10,015 INFO ]: Abstraction has 17 states and 17 transitions. [2018-06-22 06:27:10,015 INFO ]: Interpolant automaton has 19 states. [2018-06-22 06:27:10,015 INFO ]: Start isEmpty. Operand 17 states and 17 transitions. [2018-06-22 06:27:10,015 INFO ]: Finished isEmpty. Found accepting run of length 17 [2018-06-22 06:27:10,015 INFO ]: Found error trace [2018-06-22 06:27:10,015 INFO ]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:27:10,015 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:27:10,016 INFO ]: Analyzing trace with hash -1752374252, now seen corresponding path program 6 times [2018-06-22 06:27:10,016 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:27:10,016 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:27:10,016 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:27:10,016 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 06:27:10,016 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:27:10,168 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:27:11,214 WARN ]: Spent 748.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 18 [2018-06-22 06:27:11,432 INFO ]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:27:11,433 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:27:11,433 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 06:27:11,439 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 06:27:11,567 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2018-06-22 06:27:11,567 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:27:11,575 INFO ]: Computing forward predicates... [2018-06-22 06:27:12,619 WARN ]: Spent 504.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 41 [2018-06-22 06:27:46,613 WARN ]: Spent 18.45 s on a formula simplification. DAG size of input: 982 DAG size of output: 50 [2018-06-22 06:27:46,784 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:27:47,134 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:27:47,396 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:27:47,639 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:27:48,716 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:27:48,963 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:27:48,999 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:27:49,044 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:27:49,252 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:27:49,290 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:27:49,450 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:27:49,485 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:27:49,645 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:27:49,702 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:27:49,746 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:27:49,928 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:27:50,059 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 06:27:53,657 WARN ]: Simplifying disjunction of 414720 conjuctions. This might take some time... Received shutdown request... [2018-06-22 06:28:00,412 INFO ]: Timeout while computing interpolants [2018-06-22 06:28:00,612 WARN ]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 06:28:00,613 WARN ]: Verification canceled [2018-06-22 06:28:00,616 WARN ]: Timeout [2018-06-22 06:28:00,617 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 06:28:00 BoogieIcfgContainer [2018-06-22 06:28:00,617 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 06:28:00,618 INFO ]: Toolchain (without parser) took 61315.41 ms. Allocated memory was 303.6 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 254.0 MB in the beginning and 911.4 MB in the end (delta: -657.4 MB). Peak memory consumption was 1.6 GB. Max. memory is 3.6 GB. [2018-06-22 06:28:00,618 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 303.6 MB. Free memory is still 268.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 06:28:00,619 INFO ]: ChcToBoogie took 83.06 ms. Allocated memory is still 303.6 MB. Free memory was 254.0 MB in the beginning and 252.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 06:28:00,619 INFO ]: Boogie Preprocessor took 54.13 ms. Allocated memory is still 303.6 MB. Free memory was 252.0 MB in the beginning and 250.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 06:28:00,619 INFO ]: RCFGBuilder took 392.87 ms. Allocated memory is still 303.6 MB. Free memory was 250.0 MB in the beginning and 234.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-22 06:28:00,620 INFO ]: TraceAbstraction took 60775.63 ms. Allocated memory was 303.6 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 234.0 MB in the beginning and 911.4 MB in the end (delta: -677.3 MB). Peak memory consumption was 1.6 GB. Max. memory is 3.6 GB. [2018-06-22 06:28:00,623 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 303.6 MB. Free memory is still 268.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 83.06 ms. Allocated memory is still 303.6 MB. Free memory was 254.0 MB in the beginning and 252.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 54.13 ms. Allocated memory is still 303.6 MB. Free memory was 252.0 MB in the beginning and 250.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 392.87 ms. Allocated memory is still 303.6 MB. Free memory was 250.0 MB in the beginning and 234.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 60775.63 ms. Allocated memory was 303.6 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 234.0 MB in the beginning and 911.4 MB in the end (delta: -677.3 MB). Peak memory consumption was 1.6 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 17 with TraceHistMax 9, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 414720 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 60.7s OverallTime, 7 OverallIterations, 9 TraceHistogramMax, 2.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 0 SDslu, 205 SDs, 0 SdLazy, 142 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=6, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 8236 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2345 ConjunctsInSsa, 217 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/158 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/cd.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_06-28-00-631.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cd.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_06-28-00-631.csv Completed graceful shutdown