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_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/car_6_e2_589_e3_349.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 16:00:07,553 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 16:00:07,556 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 16:00:07,572 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 16:00:07,572 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 16:00:07,573 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 16:00:07,577 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 16:00:07,580 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 16:00:07,583 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 16:00:07,584 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 16:00:07,584 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 16:00:07,586 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 16:00:07,587 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 16:00:07,588 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 16:00:07,591 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 16:00:07,592 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 16:00:07,594 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 16:00:07,608 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 16:00:07,609 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 16:00:07,610 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 16:00:07,612 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 16:00:07,614 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 16:00:07,614 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 16:00:07,614 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 16:00:07,615 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 16:00:07,616 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 16:00:07,617 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 16:00:07,618 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 16:00:07,619 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 16:00:07,619 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 16:00:07,620 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 16:00:07,620 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 16:00:07,621 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 16:00:07,621 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 16:00:07,622 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 16:00:07,622 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 16:00:07,636 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 16:00:07,636 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 16:00:07,637 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 16:00:07,637 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 16:00:07,638 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 16:00:07,638 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 16:00:07,638 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 16:00:07,639 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 16:00:07,639 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 16:00:07,639 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 16:00:07,639 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 16:00:07,639 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 16:00:07,640 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 16:00:07,640 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 16:00:07,640 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 16:00:07,640 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 16:00:07,640 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 16:00:07,640 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 16:00:07,641 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 16:00:07,642 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 16:00:07,642 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 16:00:07,682 INFO ]: Repository-Root is: /tmp [2018-06-22 16:00:07,702 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 16:00:07,709 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 16:00:07,710 INFO ]: Initializing SmtParser... [2018-06-22 16:00:07,711 INFO ]: SmtParser initialized [2018-06-22 16:00:07,712 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_6_e2_589_e3_349.smt2 [2018-06-22 16:00:07,713 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 16:00:07,808 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_6_e2_589_e3_349.smt2 unknown [2018-06-22 16:00:08,179 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_6_e2_589_e3_349.smt2 [2018-06-22 16:00:08,184 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 16:00:08,190 INFO ]: Walking toolchain with 4 elements. [2018-06-22 16:00:08,191 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 16:00:08,191 INFO ]: Initializing ChcToBoogie... [2018-06-22 16:00:08,191 INFO ]: ChcToBoogie initialized [2018-06-22 16:00:08,194 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:00:08" (1/1) ... [2018-06-22 16:00:08,247 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:00:08 Unit [2018-06-22 16:00:08,248 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 16:00:08,248 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 16:00:08,248 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 16:00:08,248 INFO ]: Boogie Preprocessor initialized [2018-06-22 16:00:08,266 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:00:08" (1/1) ... [2018-06-22 16:00:08,266 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:00:08" (1/1) ... [2018-06-22 16:00:08,276 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:00:08" (1/1) ... [2018-06-22 16:00:08,276 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:00:08" (1/1) ... [2018-06-22 16:00:08,281 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:00:08" (1/1) ... [2018-06-22 16:00:08,282 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:00:08" (1/1) ... [2018-06-22 16:00:08,284 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:00:08" (1/1) ... [2018-06-22 16:00:08,291 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 16:00:08,292 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 16:00:08,292 INFO ]: Initializing RCFGBuilder... [2018-06-22 16:00:08,292 INFO ]: RCFGBuilder initialized [2018-06-22 16:00:08,293 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:00:08" (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 16:00:08,308 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 16:00:08,308 INFO ]: Found specification of procedure False [2018-06-22 16:00:08,308 INFO ]: Found implementation of procedure False [2018-06-22 16:00:08,308 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 16:00:08,308 INFO ]: Found specification of procedure state [2018-06-22 16:00:08,308 INFO ]: Found implementation of procedure state [2018-06-22 16:00:08,308 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 16:00:08,308 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 16:00:08,308 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 16:00:08,652 INFO ]: Using library mode [2018-06-22 16:00:08,653 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:00:08 BoogieIcfgContainer [2018-06-22 16:00:08,653 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 16:00:08,654 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 16:00:08,654 INFO ]: Initializing TraceAbstraction... [2018-06-22 16:00:08,661 INFO ]: TraceAbstraction initialized [2018-06-22 16:00:08,661 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:00:08" (1/3) ... [2018-06-22 16:00:08,662 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256a084e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:00:08, skipping insertion in model container [2018-06-22 16:00:08,662 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:00:08" (2/3) ... [2018-06-22 16:00:08,662 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256a084e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:00:08, skipping insertion in model container [2018-06-22 16:00:08,662 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:00:08" (3/3) ... [2018-06-22 16:00:08,665 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 16:00:08,675 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 16:00:08,688 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 16:00:08,739 INFO ]: Using default assertion order modulation [2018-06-22 16:00:08,740 INFO ]: Interprodecural is true [2018-06-22 16:00:08,740 INFO ]: Hoare is false [2018-06-22 16:00:08,740 INFO ]: Compute interpolants for FPandBP [2018-06-22 16:00:08,740 INFO ]: Backedges is TWOTRACK [2018-06-22 16:00:08,740 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 16:00:08,740 INFO ]: Difference is false [2018-06-22 16:00:08,740 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 16:00:08,740 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 16:00:08,755 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 16:00:08,766 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 16:00:08,766 INFO ]: Found error trace [2018-06-22 16:00:08,771 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:00:08,771 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:00:08,777 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 16:00:08,780 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:00:08,780 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:00:08,817 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:00:08,817 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:00:08,817 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:00:08,904 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:00:09,060 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 16:00:09,062 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 16:00:09,063 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 16:00:09,064 INFO ]: Interpolant automaton has 4 states [2018-06-22 16:00:09,076 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 16:00:09,077 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 16:00:09,079 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 16:00:09,193 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:00:09,193 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 16:00:09,195 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 16:00:09,196 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 16:00:09,197 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:00:09,213 INFO ]: With dead ends: 13 [2018-06-22 16:00:09,213 INFO ]: Without dead ends: 13 [2018-06-22 16:00:09,217 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 16:00:09,232 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 16:00:09,252 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 16:00:09,254 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 16:00:09,254 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 16:00:09,256 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 16:00:09,256 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:00:09,256 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 16:00:09,256 INFO ]: Interpolant automaton has 4 states. [2018-06-22 16:00:09,256 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 16:00:09,257 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 16:00:09,257 INFO ]: Found error trace [2018-06-22 16:00:09,257 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:00:09,258 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:00:09,258 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 16:00:09,258 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:00:09,258 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:00:09,259 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:00:09,259 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:00:09,259 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:00:09,329 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:00:09,622 WARN ]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 16:00:09,740 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 16:00:09,740 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:00:09,740 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 16:00:09,759 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:00:09,865 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:00:09,875 INFO ]: Computing forward predicates... [2018-06-22 16:00:10,325 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 16:00:10,350 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:00:10,350 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 16:00:10,351 INFO ]: Interpolant automaton has 9 states [2018-06-22 16:00:10,351 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 16:00:10,351 INFO ]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-06-22 16:00:10,352 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 16:00:10,840 WARN ]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 16:00:11,155 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:00:11,155 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 16:00:11,155 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 16:00:11,155 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 16:00:11,156 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:00:11,156 INFO ]: With dead ends: 15 [2018-06-22 16:00:11,156 INFO ]: Without dead ends: 15 [2018-06-22 16:00:11,157 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-06-22 16:00:11,157 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 16:00:11,159 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 16:00:11,160 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 16:00:11,160 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 16:00:11,160 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 16:00:11,161 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:00:11,161 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 16:00:11,161 INFO ]: Interpolant automaton has 9 states. [2018-06-22 16:00:11,161 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 16:00:11,161 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 16:00:11,161 INFO ]: Found error trace [2018-06-22 16:00:11,161 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:00:11,161 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:00:11,162 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 16:00:11,162 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:00:11,162 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:00:11,162 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:00:11,163 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:00:11,163 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:00:11,248 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:00:11,608 WARN ]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-06-22 16:00:11,845 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 16:00:11,845 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:00:11,845 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 16:00:11,855 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 16:00:11,944 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 16:00:11,944 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:00:11,949 INFO ]: Computing forward predicates... [2018-06-22 16:00:12,270 WARN ]: Spent 102.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 18 [2018-06-22 16:00:12,528 WARN ]: Spent 225.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2018-06-22 16:00:12,607 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 16:00:12,634 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:00:12,635 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 16:00:12,635 INFO ]: Interpolant automaton has 13 states [2018-06-22 16:00:12,635 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 16:00:12,635 INFO ]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2018-06-22 16:00:12,635 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 16:00:13,191 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:00:13,191 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 16:00:13,191 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 16:00:13,191 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 16:00:13,191 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:00:13,192 INFO ]: With dead ends: 19 [2018-06-22 16:00:13,192 INFO ]: Without dead ends: 19 [2018-06-22 16:00:13,192 INFO ]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2018-06-22 16:00:13,192 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 16:00:13,195 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 16:00:13,196 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 16:00:13,196 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 16:00:13,196 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2018-06-22 16:00:13,197 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:00:13,197 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 16:00:13,197 INFO ]: Interpolant automaton has 13 states. [2018-06-22 16:00:13,197 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 16:00:13,197 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 16:00:13,198 INFO ]: Found error trace [2018-06-22 16:00:13,198 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:00:13,198 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:00:13,198 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 3 times [2018-06-22 16:00:13,198 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:00:13,198 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:00:13,199 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:00:13,199 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:00:13,199 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:00:13,297 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:00:13,704 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 16:00:13,704 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:00:13,704 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 16:00:13,714 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 16:00:13,882 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-06-22 16:00:13,882 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:00:13,889 INFO ]: Computing forward predicates... [2018-06-22 16:00:14,558 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 16:00:14,592 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:00:14,592 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-06-22 16:00:14,592 INFO ]: Interpolant automaton has 21 states [2018-06-22 16:00:14,592 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 16:00:14,593 INFO ]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2018-06-22 16:00:14,593 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 21 states. [2018-06-22 16:00:14,884 WARN ]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2018-06-22 16:00:15,373 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:00:15,374 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-22 16:00:15,375 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 16:00:15,375 INFO ]: Start accepts. Automaton has 21 states. Word has length 25 [2018-06-22 16:00:15,375 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:00:15,376 INFO ]: With dead ends: 23 [2018-06-22 16:00:15,376 INFO ]: Without dead ends: 23 [2018-06-22 16:00:15,377 INFO ]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2018-06-22 16:00:15,377 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 16:00:15,380 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 16:00:15,381 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 16:00:15,381 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-22 16:00:15,381 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 25 [2018-06-22 16:00:15,382 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:00:15,382 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-22 16:00:15,382 INFO ]: Interpolant automaton has 21 states. [2018-06-22 16:00:15,382 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-22 16:00:15,383 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 16:00:15,383 INFO ]: Found error trace [2018-06-22 16:00:15,383 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:00:15,383 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:00:15,383 INFO ]: Analyzing trace with hash -1661294575, now seen corresponding path program 4 times [2018-06-22 16:00:15,383 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:00:15,383 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:00:15,384 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:00:15,384 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:00:15,384 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:00:15,534 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:00:16,854 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 16:00:16,854 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:00:16,854 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 16:00:16,861 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 16:00:16,989 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 16:00:16,989 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:00:16,996 INFO ]: Computing forward predicates... [2018-06-22 16:00:17,784 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 16:00:17,806 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:00:17,806 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2018-06-22 16:00:17,806 INFO ]: Interpolant automaton has 29 states [2018-06-22 16:00:17,806 INFO ]: Constructing interpolant automaton starting with 29 interpolants. [2018-06-22 16:00:17,807 INFO ]: CoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2018-06-22 16:00:17,807 INFO ]: Start difference. First operand 23 states and 24 transitions. Second operand 29 states. [2018-06-22 16:00:18,169 WARN ]: Spent 195.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 90 [2018-06-22 16:00:18,495 WARN ]: Spent 274.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 68 [2018-06-22 16:00:18,825 WARN ]: Spent 301.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2018-06-22 16:00:19,054 WARN ]: Spent 189.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2018-06-22 16:00:19,425 WARN ]: Spent 306.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2018-06-22 16:00:19,860 WARN ]: Spent 381.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2018-06-22 16:00:20,329 WARN ]: Spent 293.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2018-06-22 16:00:20,379 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:00:20,379 INFO ]: Finished difference Result 25 states and 26 transitions. [2018-06-22 16:00:20,380 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 16:00:20,380 INFO ]: Start accepts. Automaton has 29 states. Word has length 33 [2018-06-22 16:00:20,380 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:00:20,381 INFO ]: With dead ends: 25 [2018-06-22 16:00:20,381 INFO ]: Without dead ends: 25 [2018-06-22 16:00:20,381 INFO ]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=248, Invalid=1084, Unknown=0, NotChecked=0, Total=1332 [2018-06-22 16:00:20,381 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 16:00:20,385 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-22 16:00:20,385 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 16:00:20,386 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-06-22 16:00:20,386 INFO ]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 33 [2018-06-22 16:00:20,386 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:00:20,386 INFO ]: Abstraction has 25 states and 26 transitions. [2018-06-22 16:00:20,386 INFO ]: Interpolant automaton has 29 states. [2018-06-22 16:00:20,386 INFO ]: Start isEmpty. Operand 25 states and 26 transitions. [2018-06-22 16:00:20,387 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 16:00:20,387 INFO ]: Found error trace [2018-06-22 16:00:20,387 INFO ]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:00:20,388 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:00:20,388 INFO ]: Analyzing trace with hash -1494134477, now seen corresponding path program 5 times [2018-06-22 16:00:20,388 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:00:20,388 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:00:20,388 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:00:20,388 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:00:20,388 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:00:20,535 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:00:21,028 WARN ]: Spent 191.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 21 [2018-06-22 16:00:21,384 WARN ]: Spent 339.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 21 [2018-06-22 16:00:22,067 WARN ]: Spent 581.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 16 [2018-06-22 16:00:22,586 INFO ]: Checked inductivity of 105 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-06-22 16:00:22,586 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:00:22,586 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) [2018-06-22 16:00:22,600 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 16:00:22,776 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-06-22 16:00:22,776 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:00:22,787 INFO ]: Computing forward predicates... [2018-06-22 16:00:23,190 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:00:24,004 INFO ]: Checked inductivity of 105 backedges. 1 proven. 76 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-22 16:00:24,043 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:00:24,043 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 32 [2018-06-22 16:00:24,044 INFO ]: Interpolant automaton has 32 states [2018-06-22 16:00:24,044 INFO ]: Constructing interpolant automaton starting with 32 interpolants. [2018-06-22 16:00:24,044 INFO ]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2018-06-22 16:00:24,044 INFO ]: Start difference. First operand 25 states and 26 transitions. Second operand 32 states. [2018-06-22 16:00:25,107 WARN ]: Spent 811.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 99 [2018-06-22 16:00:25,524 WARN ]: Spent 208.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 59 [2018-06-22 16:00:25,877 WARN ]: Spent 320.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 87 [2018-06-22 16:00:26,250 WARN ]: Spent 338.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2018-06-22 16:00:26,679 WARN ]: Spent 307.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 83 [2018-06-22 16:00:27,039 WARN ]: Spent 300.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 85 [2018-06-22 16:00:27,583 WARN ]: Spent 308.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 81 [2018-06-22 16:00:27,952 WARN ]: Spent 311.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 87 [2018-06-22 16:00:28,319 WARN ]: Spent 314.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 94 [2018-06-22 16:00:28,377 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:00:28,377 INFO ]: Finished difference Result 29 states and 30 transitions. [2018-06-22 16:00:28,377 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 16:00:28,377 INFO ]: Start accepts. Automaton has 32 states. Word has length 37 [2018-06-22 16:00:28,378 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:00:28,378 INFO ]: With dead ends: 29 [2018-06-22 16:00:28,378 INFO ]: Without dead ends: 29 [2018-06-22 16:00:28,379 INFO ]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=331, Invalid=1391, Unknown=0, NotChecked=0, Total=1722 [2018-06-22 16:00:28,379 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-22 16:00:28,384 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-06-22 16:00:28,384 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-22 16:00:28,385 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-06-22 16:00:28,385 INFO ]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 37 [2018-06-22 16:00:28,385 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:00:28,385 INFO ]: Abstraction has 29 states and 30 transitions. [2018-06-22 16:00:28,385 INFO ]: Interpolant automaton has 32 states. [2018-06-22 16:00:28,385 INFO ]: Start isEmpty. Operand 29 states and 30 transitions. [2018-06-22 16:00:28,386 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 16:00:28,386 INFO ]: Found error trace [2018-06-22 16:00:28,386 INFO ]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:00:28,386 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:00:28,386 INFO ]: Analyzing trace with hash 996918775, now seen corresponding path program 6 times [2018-06-22 16:00:28,386 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:00:28,386 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:00:28,387 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:00:28,387 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:00:28,387 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:00:28,671 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:00:29,930 WARN ]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 16:00:32,896 WARN ]: Spent 2.84 s on a formula simplification. DAG size of input: 148 DAG size of output: 21 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown