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/cav12/transmitter.7.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:02:47,216 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:02:47,219 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:02:47,230 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:02:47,230 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:02:47,233 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:02:47,234 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:02:47,239 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:02:47,241 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:02:47,241 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:02:47,242 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:02:47,243 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:02:47,243 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:02:47,246 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:02:47,247 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:02:47,248 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:02:47,253 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:02:47,267 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:02:47,270 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:02:47,272 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:02:47,273 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:02:47,275 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:02:47,276 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:02:47,276 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:02:47,277 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:02:47,278 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:02:47,285 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:02:47,286 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:02:47,287 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:02:47,287 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:02:47,288 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:02:47,289 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:02:47,289 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:02:47,290 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:02:47,291 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:02:47,296 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:02:47,315 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:02:47,315 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:02:47,315 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:02:47,315 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:02:47,316 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:02:47,316 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:02:47,316 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:02:47,317 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:02:47,317 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:02:47,317 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:02:47,317 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:02:47,317 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:02:47,318 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:02:47,318 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:02:47,318 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:02:47,318 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:02:47,318 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:02:47,320 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:02:47,320 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:02:47,368 INFO ]: Repository-Root is: /tmp [2018-06-22 05:02:47,383 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:02:47,389 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:02:47,391 INFO ]: Initializing SmtParser... [2018-06-22 05:02:47,391 INFO ]: SmtParser initialized [2018-06-22 05:02:47,392 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.7.smt2 [2018-06-22 05:02:47,394 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 05:02:47,493 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.7.smt2 unknown [2018-06-22 05:02:50,133 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.7.smt2 [2018-06-22 05:02:50,138 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:02:50,145 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:02:50,146 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:02:50,146 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:02:50,146 INFO ]: ChcToBoogie initialized [2018-06-22 05:02:50,150 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:02:50" (1/1) ... [2018-06-22 05:02:50,283 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:02:50 Unit [2018-06-22 05:02:50,283 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:02:50,283 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:02:50,283 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:02:50,284 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:02:50,308 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:02:50" (1/1) ... [2018-06-22 05:02:50,308 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:02:50" (1/1) ... [2018-06-22 05:02:50,377 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:02:50" (1/1) ... [2018-06-22 05:02:50,377 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:02:50" (1/1) ... [2018-06-22 05:02:50,428 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:02:50" (1/1) ... [2018-06-22 05:02:50,430 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:02:50" (1/1) ... [2018-06-22 05:02:50,444 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:02:50" (1/1) ... [2018-06-22 05:02:50,461 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:02:50,462 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:02:50,462 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:02:50,462 INFO ]: RCFGBuilder initialized [2018-06-22 05:02:50,463 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:02:50" (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 05:02:50,485 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:02:50,485 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:02:50,485 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:02:50,485 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:02:50,485 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:02:50,485 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 05:02:52,481 INFO ]: Using library mode [2018-06-22 05:02:52,482 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:02:52 BoogieIcfgContainer [2018-06-22 05:02:52,482 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:02:52,483 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:02:52,483 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:02:52,492 INFO ]: TraceAbstraction initialized [2018-06-22 05:02:52,492 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:02:50" (1/3) ... [2018-06-22 05:02:52,493 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4519c987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:02:52, skipping insertion in model container [2018-06-22 05:02:52,493 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:02:50" (2/3) ... [2018-06-22 05:02:52,493 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4519c987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:02:52, skipping insertion in model container [2018-06-22 05:02:52,493 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:02:52" (3/3) ... [2018-06-22 05:02:52,495 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:02:52,509 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:02:52,519 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:02:52,588 INFO ]: Using default assertion order modulation [2018-06-22 05:02:52,588 INFO ]: Interprodecural is true [2018-06-22 05:02:52,588 INFO ]: Hoare is false [2018-06-22 05:02:52,588 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:02:52,588 INFO ]: Backedges is TWOTRACK [2018-06-22 05:02:52,589 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:02:52,589 INFO ]: Difference is false [2018-06-22 05:02:52,589 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:02:52,589 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:02:52,614 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:02:52,633 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:02:52,633 INFO ]: Found error trace [2018-06-22 05:02:52,635 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:02:52,635 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:02:52,644 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 05:02:52,647 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:02:52,648 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:02:52,690 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:02:52,690 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:02:52,690 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:02:52,895 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:02:53,089 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:02:53,092 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:02:53,092 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:02:53,094 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:02:53,109 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:02:53,110 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:02:53,112 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:02:53,306 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:02:53,306 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:02:53,308 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:02:53,309 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:02:53,310 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:02:53,322 INFO ]: With dead ends: 9 [2018-06-22 05:02:53,322 INFO ]: Without dead ends: 9 [2018-06-22 05:02:53,324 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 05:02:53,342 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:02:53,371 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:02:53,372 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:02:53,373 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:02:53,374 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:02:53,374 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:02:53,374 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:02:53,374 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:02:53,374 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:02:53,375 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:02:53,375 INFO ]: Found error trace [2018-06-22 05:02:53,375 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:02:53,375 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:02:53,375 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 05:02:53,375 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:02:53,375 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:02:53,377 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:02:53,377 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:02:53,377 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:02:53,783 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:02:54,488 WARN ]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 05:02:54,611 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:02:54,611 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:02:54,611 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 05:02:54,627 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:02:55,267 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:02:55,310 INFO ]: Computing forward predicates... [2018-06-22 05:02:56,528 WARN ]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 05:02:56,533 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:02:56,560 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:02:56,560 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 05:02:56,561 INFO ]: Interpolant automaton has 6 states [2018-06-22 05:02:56,561 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 05:02:56,561 INFO ]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:02:56,561 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 05:02:56,688 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:02:56,688 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 05:02:56,688 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 05:02:56,688 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 05:02:56,688 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:02:56,689 INFO ]: With dead ends: 10 [2018-06-22 05:02:56,689 INFO ]: Without dead ends: 10 [2018-06-22 05:02:56,690 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:02:56,690 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 05:02:56,691 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 05:02:56,691 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 05:02:56,691 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 05:02:56,691 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 05:02:56,691 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:02:56,691 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 05:02:56,691 INFO ]: Interpolant automaton has 6 states. [2018-06-22 05:02:56,691 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 05:02:56,692 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 05:02:56,692 INFO ]: Found error trace [2018-06-22 05:02:56,692 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:02:56,692 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:02:56,692 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 05:02:56,692 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:02:56,692 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:02:56,693 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:02:56,693 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:02:56,693 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:02:57,250 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:02:58,474 WARN ]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 05:02:58,737 WARN ]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 05:02:58,738 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:02:58,738 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:02:58,738 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) [2018-06-22 05:02:58,755 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:02:59,383 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:02:59,383 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:02:59,457 INFO ]: Computing forward predicates... [2018-06-22 05:03:04,951 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 16 [2018-06-22 05:03:04,956 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:03:04,982 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:03:04,982 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 05:03:04,982 INFO ]: Interpolant automaton has 8 states [2018-06-22 05:03:04,982 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 05:03:04,982 INFO ]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:03:04,982 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-22 05:03:05,338 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:03:05,338 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 05:03:05,338 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 05:03:05,338 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-22 05:03:05,338 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:03:05,338 INFO ]: With dead ends: 13 [2018-06-22 05:03:05,338 INFO ]: Without dead ends: 13 [2018-06-22 05:03:05,339 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-06-22 05:03:05,339 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 05:03:05,340 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 05:03:05,340 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 05:03:05,340 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 05:03:05,340 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 9 [2018-06-22 05:03:05,340 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:03:05,340 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 05:03:05,340 INFO ]: Interpolant automaton has 8 states. [2018-06-22 05:03:05,340 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 05:03:05,340 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 05:03:05,340 INFO ]: Found error trace [2018-06-22 05:03:05,340 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:03:05,340 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:03:05,341 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 3 times [2018-06-22 05:03:05,341 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:03:05,341 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:03:05,341 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:03:05,341 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:03:05,342 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:03:06,342 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:03:08,645 WARN ]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 05:03:08,897 WARN ]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 05:03:09,019 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:03:09,019 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:03:09,019 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 05:03:09,027 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:03:10,353 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 05:03:10,353 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:03:10,494 INFO ]: Computing forward predicates... [2018-06-22 05:03:23,041 WARN ]: Spent 469.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 15 [2018-06-22 05:03:23,045 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:03:23,077 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:03:23,077 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 05:03:23,077 INFO ]: Interpolant automaton has 14 states [2018-06-22 05:03:23,078 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 05:03:23,078 INFO ]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2018-06-22 05:03:23,078 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-22 05:03:23,490 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:03:23,490 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 05:03:23,490 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 05:03:23,490 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-22 05:03:23,490 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:03:23,490 INFO ]: With dead ends: 14 [2018-06-22 05:03:23,490 INFO ]: Without dead ends: 14 [2018-06-22 05:03:23,491 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2018-06-22 05:03:23,491 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 05:03:23,492 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 05:03:23,492 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 05:03:23,493 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-22 05:03:23,493 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-06-22 05:03:23,493 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:03:23,493 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-22 05:03:23,493 INFO ]: Interpolant automaton has 14 states. [2018-06-22 05:03:23,493 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-22 05:03:23,493 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 05:03:23,493 INFO ]: Found error trace [2018-06-22 05:03:23,493 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:03:23,493 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:03:23,494 INFO ]: Analyzing trace with hash 23503628, now seen corresponding path program 4 times [2018-06-22 05:03:23,494 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:03:23,494 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:03:23,494 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:03:23,494 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:03:23,494 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:03:24,421 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:03:26,173 WARN ]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 05:03:26,362 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:03:26,362 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:03:26,362 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 05:03:26,370 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown