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/dillig15.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:15:37,141 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:15:37,143 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:15:37,157 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:15:37,158 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:15:37,159 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:15:37,160 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:15:37,163 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:15:37,165 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:15:37,167 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:15:37,168 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:15:37,168 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:15:37,169 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:15:37,172 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:15:37,173 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:15:37,174 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:15:37,184 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:15:37,186 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:15:37,187 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:15:37,188 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:15:37,192 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:15:37,194 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:15:37,194 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:15:37,194 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:15:37,197 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:15:37,198 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:15:37,199 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:15:37,200 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:15:37,201 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:15:37,204 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:15:37,205 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:15:37,206 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:15:37,206 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:15:37,207 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:15:37,208 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:15:37,209 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:15:37,235 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:15:37,236 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:15:37,236 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:15:37,236 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:15:37,237 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:15:37,237 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:15:37,238 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:15:37,238 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:15:37,238 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:15:37,238 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:15:37,238 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:15:37,239 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:15:37,239 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:15:37,239 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:15:37,239 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:15:37,239 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:15:37,239 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:15:37,241 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:15:37,241 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:15:37,287 INFO ]: Repository-Root is: /tmp [2018-06-22 05:15:37,304 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:15:37,312 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:15:37,313 INFO ]: Initializing SmtParser... [2018-06-22 05:15:37,314 INFO ]: SmtParser initialized [2018-06-22 05:15:37,315 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig15.c.smt2 [2018-06-22 05:15:37,316 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 05:15:37,418 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig15.c.smt2 unknown [2018-06-22 05:15:37,720 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig15.c.smt2 [2018-06-22 05:15:37,724 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:15:37,730 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:15:37,731 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:15:37,731 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:15:37,731 INFO ]: ChcToBoogie initialized [2018-06-22 05:15:37,735 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:15:37" (1/1) ... [2018-06-22 05:15:37,795 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:15:37 Unit [2018-06-22 05:15:37,795 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:15:37,796 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:15:37,796 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:15:37,796 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:15:37,819 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:15:37" (1/1) ... [2018-06-22 05:15:37,819 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:15:37" (1/1) ... [2018-06-22 05:15:37,826 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:15:37" (1/1) ... [2018-06-22 05:15:37,826 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:15:37" (1/1) ... [2018-06-22 05:15:37,830 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:15:37" (1/1) ... [2018-06-22 05:15:37,832 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:15:37" (1/1) ... [2018-06-22 05:15:37,833 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:15:37" (1/1) ... [2018-06-22 05:15:37,835 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:15:37,835 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:15:37,836 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:15:37,836 INFO ]: RCFGBuilder initialized [2018-06-22 05:15:37,837 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:15:37" (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 05:15:37,849 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:15:37,849 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:15:37,849 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:15:37,849 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:15:37,849 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:15:37,849 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 05:15:38,036 INFO ]: Using library mode [2018-06-22 05:15:38,037 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:15:38 BoogieIcfgContainer [2018-06-22 05:15:38,037 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:15:38,039 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:15:38,039 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:15:38,042 INFO ]: TraceAbstraction initialized [2018-06-22 05:15:38,043 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:15:37" (1/3) ... [2018-06-22 05:15:38,044 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ffb29de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:15:38, skipping insertion in model container [2018-06-22 05:15:38,044 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:15:37" (2/3) ... [2018-06-22 05:15:38,044 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ffb29de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:15:38, skipping insertion in model container [2018-06-22 05:15:38,044 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:15:38" (3/3) ... [2018-06-22 05:15:38,046 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:15:38,056 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:15:38,067 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:15:38,113 INFO ]: Using default assertion order modulation [2018-06-22 05:15:38,114 INFO ]: Interprodecural is true [2018-06-22 05:15:38,114 INFO ]: Hoare is false [2018-06-22 05:15:38,114 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:15:38,114 INFO ]: Backedges is TWOTRACK [2018-06-22 05:15:38,114 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:15:38,114 INFO ]: Difference is false [2018-06-22 05:15:38,114 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:15:38,114 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:15:38,128 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:15:38,140 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:15:38,140 INFO ]: Found error trace [2018-06-22 05:15:38,141 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:15:38,141 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:15:38,145 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 05:15:38,147 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:15:38,147 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:15:38,182 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:15:38,182 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:15:38,182 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:15:38,216 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:15:38,297 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:15:38,299 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:15:38,299 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:15:38,300 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:15:38,311 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:15:38,311 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:15:38,313 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:15:38,382 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:15:38,382 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:15:38,383 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:15:38,384 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:15:38,385 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:15:38,398 INFO ]: With dead ends: 9 [2018-06-22 05:15:38,398 INFO ]: Without dead ends: 9 [2018-06-22 05:15:38,400 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 05:15:38,419 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:15:38,450 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:15:38,451 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:15:38,451 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:15:38,452 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:15:38,452 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:15:38,452 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:15:38,452 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:15:38,453 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:15:38,453 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:15:38,453 INFO ]: Found error trace [2018-06-22 05:15:38,453 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:15:38,453 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:15:38,453 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 05:15:38,453 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:15:38,453 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:15:38,454 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:15:38,454 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:15:38,454 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:15:38,498 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:15:38,623 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:15:38,623 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:15:38,623 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 05:15:38,631 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:15:38,686 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:15:38,698 INFO ]: Computing forward predicates... [2018-06-22 05:15:39,507 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:15:39,528 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:15:39,528 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 05:15:39,528 INFO ]: Interpolant automaton has 5 states [2018-06-22 05:15:39,528 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 05:15:39,529 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:15:39,529 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 05:15:39,641 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:15:39,641 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 05:15:39,642 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 05:15:39,642 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 05:15:39,642 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:15:39,643 INFO ]: With dead ends: 11 [2018-06-22 05:15:39,643 INFO ]: Without dead ends: 11 [2018-06-22 05:15:39,644 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:15:39,644 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 05:15:39,645 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 05:15:39,645 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 05:15:39,645 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 05:15:39,645 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 05:15:39,646 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:15:39,646 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 05:15:39,646 INFO ]: Interpolant automaton has 5 states. [2018-06-22 05:15:39,647 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 05:15:39,647 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 05:15:39,647 INFO ]: Found error trace [2018-06-22 05:15:39,647 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:15:39,647 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:15:39,647 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-22 05:15:39,647 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:15:39,647 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:15:39,648 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:15:39,648 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:15:39,648 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:15:39,773 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:15:40,003 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:15:40,003 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:15:40,003 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 05:15:40,013 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 05:15:40,098 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:15:40,098 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:15:40,101 INFO ]: Computing forward predicates... [2018-06-22 05:15:41,584 WARN ]: Spent 207.00 ms on a formula simplification. DAG size of input: 5 DAG size of output: 3 [2018-06-22 05:15:42,736 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:15:42,769 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:15:42,769 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 05:15:42,769 INFO ]: Interpolant automaton has 8 states [2018-06-22 05:15:42,769 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 05:15:42,770 INFO ]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:15:42,770 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 8 states. [2018-06-22 05:15:43,184 WARN ]: Spent 196.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 6 [2018-06-22 05:15:43,400 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:15:43,400 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 05:15:43,400 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 05:15:43,400 INFO ]: Start accepts. Automaton has 8 states. Word has length 10 [2018-06-22 05:15:43,400 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:15:43,401 INFO ]: With dead ends: 13 [2018-06-22 05:15:43,401 INFO ]: Without dead ends: 13 [2018-06-22 05:15:43,401 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-06-22 05:15:43,401 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 05:15:43,404 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 05:15:43,404 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 05:15:43,404 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 05:15:43,405 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 05:15:43,405 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:15:43,405 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 05:15:43,405 INFO ]: Interpolant automaton has 8 states. [2018-06-22 05:15:43,405 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 05:15:43,405 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 05:15:43,405 INFO ]: Found error trace [2018-06-22 05:15:43,405 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:15:43,405 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:15:43,405 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 3 times [2018-06-22 05:15:43,406 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:15:43,406 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:15:43,407 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:15:43,407 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:15:43,407 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:15:43,499 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:15:43,763 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:15:43,763 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:15:43,763 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 05:15:43,769 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:15:43,856 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 05:15:43,856 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:15:43,861 INFO ]: Computing forward predicates... [2018-06-22 05:15:45,523 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:15:49,758 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:15:49,766 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:15:49,775 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:15:51,388 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:15:51,418 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:15:51,472 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:15:56,004 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:15:56,024 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:15:56,024 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 05:15:56,025 INFO ]: Interpolant automaton has 12 states [2018-06-22 05:15:56,025 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 05:15:56,025 INFO ]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-06-22 05:15:56,025 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-06-22 05:15:56,158 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:15:56,158 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 05:15:56,158 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 05:15:56,158 INFO ]: Start accepts. Automaton has 12 states. Word has length 12 [2018-06-22 05:15:56,158 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:15:56,159 INFO ]: With dead ends: 14 [2018-06-22 05:15:56,159 INFO ]: Without dead ends: 14 [2018-06-22 05:15:56,159 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2018-06-22 05:15:56,159 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 05:15:56,161 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 05:15:56,161 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 05:15:56,161 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-22 05:15:56,161 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-06-22 05:15:56,161 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:15:56,161 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-22 05:15:56,161 INFO ]: Interpolant automaton has 12 states. [2018-06-22 05:15:56,161 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-22 05:15:56,162 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 05:15:56,162 INFO ]: Found error trace [2018-06-22 05:15:56,162 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:15:56,162 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:15:56,162 INFO ]: Analyzing trace with hash 23503628, now seen corresponding path program 4 times [2018-06-22 05:15:56,162 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:15:56,162 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:15:56,163 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:15:56,163 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:15:56,163 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:15:56,208 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:15:56,537 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:15:56,537 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:15:56,537 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 05:15:56,558 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 05:15:56,602 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 05:15:56,602 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:15:56,608 INFO ]: Computing forward predicates... [2018-06-22 05:15:56,995 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 05:15:57,021 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:15:57,032 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:15:57,049 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:01,948 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:16:01,968 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:16:01,968 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-06-22 05:16:01,969 INFO ]: Interpolant automaton has 10 states [2018-06-22 05:16:01,969 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 05:16:01,969 INFO ]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-06-22 05:16:01,969 INFO ]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2018-06-22 05:16:02,330 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:16:02,330 INFO ]: Finished difference Result 16 states and 16 transitions. [2018-06-22 05:16:02,330 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 05:16:02,330 INFO ]: Start accepts. Automaton has 10 states. Word has length 13 [2018-06-22 05:16:02,330 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:16:02,330 INFO ]: With dead ends: 16 [2018-06-22 05:16:02,330 INFO ]: Without dead ends: 16 [2018-06-22 05:16:02,331 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2018-06-22 05:16:02,331 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-22 05:16:02,332 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-06-22 05:16:02,332 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-22 05:16:02,333 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-06-22 05:16:02,333 INFO ]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-06-22 05:16:02,333 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:16:02,333 INFO ]: Abstraction has 16 states and 16 transitions. [2018-06-22 05:16:02,333 INFO ]: Interpolant automaton has 10 states. [2018-06-22 05:16:02,333 INFO ]: Start isEmpty. Operand 16 states and 16 transitions. [2018-06-22 05:16:02,333 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-22 05:16:02,333 INFO ]: Found error trace [2018-06-22 05:16:02,333 INFO ]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:16:02,333 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:16:02,334 INFO ]: Analyzing trace with hash 1051911180, now seen corresponding path program 5 times [2018-06-22 05:16:02,334 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:16:02,334 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:16:02,334 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:16:02,334 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:16:02,334 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:16:02,503 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:16:03,228 WARN ]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 05:16:03,460 WARN ]: Spent 142.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 4 [2018-06-22 05:16:03,595 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:16:03,595 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:16:03,595 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 05:16:03,606 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 05:16:03,695 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-06-22 05:16:03,695 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:16:03,699 INFO ]: Computing forward predicates... [2018-06-22 05:16:04,347 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:07,483 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:16:07,724 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:16:07,724 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 14 [2018-06-22 05:16:07,725 INFO ]: Interpolant automaton has 14 states [2018-06-22 05:16:07,725 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 05:16:07,725 INFO ]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2018-06-22 05:16:07,725 INFO ]: Start difference. First operand 16 states and 16 transitions. Second operand 14 states. [2018-06-22 05:16:08,163 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:16:08,163 INFO ]: Finished difference Result 18 states and 18 transitions. [2018-06-22 05:16:08,163 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 05:16:08,163 INFO ]: Start accepts. Automaton has 14 states. Word has length 15 [2018-06-22 05:16:08,163 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:16:08,163 INFO ]: With dead ends: 18 [2018-06-22 05:16:08,163 INFO ]: Without dead ends: 18 [2018-06-22 05:16:08,164 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2018-06-22 05:16:08,164 INFO ]: Start minimizeSevpa. Operand 18 states. [2018-06-22 05:16:08,168 INFO ]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-06-22 05:16:08,168 INFO ]: Start removeUnreachable. Operand 18 states. [2018-06-22 05:16:08,169 INFO ]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-06-22 05:16:08,169 INFO ]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-06-22 05:16:08,169 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:16:08,169 INFO ]: Abstraction has 18 states and 18 transitions. [2018-06-22 05:16:08,169 INFO ]: Interpolant automaton has 14 states. [2018-06-22 05:16:08,169 INFO ]: Start isEmpty. Operand 18 states and 18 transitions. [2018-06-22 05:16:08,169 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 05:16:08,169 INFO ]: Found error trace [2018-06-22 05:16:08,169 INFO ]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:16:08,169 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:16:08,169 INFO ]: Analyzing trace with hash 1509090572, now seen corresponding path program 6 times [2018-06-22 05:16:08,169 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:16:08,169 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:16:08,170 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:16:08,170 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:16:08,170 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:16:08,228 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:16:08,769 INFO ]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:16:08,769 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:16:08,769 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 05:16:08,781 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 05:16:08,857 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2018-06-22 05:16:08,857 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:16:08,862 INFO ]: Computing forward predicates... [2018-06-22 05:16:10,927 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:10,929 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:10,930 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:10,932 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 05:16:10,969 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:10,972 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 05:16:10,988 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:10,993 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:10,998 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 05:16:11,019 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,020 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,025 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,027 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,031 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,033 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:16:11,036 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 05:16:11,048 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,049 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,051 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,053 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,064 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,073 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 05:16:11,090 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,092 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:16:11,098 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:16:11,102 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,104 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 05:16:11,115 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,119 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,123 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,134 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:16:11,143 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,145 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,152 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,153 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 05:16:11,171 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,175 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 05:16:11,183 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 05:16:11,251 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,253 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,254 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:16:11,258 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,260 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,261 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,262 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,264 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,265 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 05:16:11,366 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:11,379 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:14,208 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:16:14,340 WARN ]: expecting exponential blowup for input size 6 Received shutdown request... [2018-06-22 05:16:40,445 INFO ]: Timeout while computing interpolants [2018-06-22 05:16:40,645 WARN ]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:16:40,645 WARN ]: Verification canceled [2018-06-22 05:16:40,650 WARN ]: Timeout [2018-06-22 05:16:40,650 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:16:40 BoogieIcfgContainer [2018-06-22 05:16:40,650 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:16:40,676 INFO ]: Toolchain (without parser) took 62926.42 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 263.2 MB in the beginning and 581.2 MB in the end (delta: -318.0 MB). Peak memory consumption was 888.9 MB. Max. memory is 3.6 GB. [2018-06-22 05:16:40,677 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:16:40,677 INFO ]: ChcToBoogie took 65.01 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 260.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:16:40,678 INFO ]: Boogie Preprocessor took 38.97 ms. Allocated memory is still 308.8 MB. Free memory was 260.2 MB in the beginning and 259.2 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. [2018-06-22 05:16:40,678 INFO ]: RCFGBuilder took 201.78 ms. Allocated memory is still 308.8 MB. Free memory was 259.2 MB in the beginning and 249.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:16:40,678 INFO ]: TraceAbstraction took 62611.64 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 249.2 MB in the beginning and 581.2 MB in the end (delta: -332.0 MB). Peak memory consumption was 874.9 MB. Max. memory is 3.6 GB. [2018-06-22 05:16:40,683 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 65.01 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 260.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.97 ms. Allocated memory is still 308.8 MB. Free memory was 260.2 MB in the beginning and 259.2 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. * RCFGBuilder took 201.78 ms. Allocated memory is still 308.8 MB. Free memory was 259.2 MB in the beginning and 249.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 62611.64 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 249.2 MB in the beginning and 581.2 MB in the end (delta: -332.0 MB). Peak memory consumption was 874.9 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 10, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 62.5s OverallTime, 7 OverallIterations, 10 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 18 SDslu, 122 SDs, 0 SdLazy, 54 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 37 SyntacticMatches, 17 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 0.7s SatisfiabilityAnalysisTime, 27.0s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 6037 SizeOfPredicates, 20 NumberOfNonLiveVariables, 974 ConjunctsInSsa, 241 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/dillig15.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-16-40-697.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dillig15.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-16-40-697.csv Completed graceful shutdown